This part specifies two methods for measuring exhaust smoke characteristics of reciprocating internal combustion engines under steady-state conditions. One method is to assess the extinction of exhaust smoke by measuring the brightness of the light beam; the other method is to assess the soot content by measuring the blackness of the filter paper. This part applies to land, rail traction and marine reciprocating internal combustion engines, including engines used to drive agricultural tractors and road vehicles. This part is also applicable to engines that drive road construction and earthmoving machinery, industrial trucks and other engines for which there is no suitable national standard for measuring exhaust smoke. GB/T 8190.3-2003 Emission measurement of reciprocating internal combustion engines Part 3: Definition and measurement method of exhaust smoke under steady-state conditions GB/T8190.3-2003 Standard download decompression password: www.bzxz.net

GB/T8190.3—2003/ISO8178-3:1994 This part of GB/T8190 is equivalent to ISO8178-3:1994 "Reciprocating internal combustion engine emission measurement Part 3: Definition and measurement method of exhaust smoke under steady-state conditions". The writing format is basically consistent with GB/T1.1--2000 "Guidelines for standardization work Part 1: Structure and writing rules of standards".
GB/T8190, under the general title of "Reciprocating Internal Combustion Engines, Emission Measurement", consists of the following parts: Part 1: Test bench measurement of gaseous and particulate emissions; Part 2: Field measurement of gaseous and particulate emissions; Part 3: Definition and measurement method of exhaust smoke density under steady-state conditions; Part 4: Test cycles for engines of different purposes; Part 5: Test fuels;
--Part 6: Test report;
Part 7 Determination of engine families;
.-Part 8: Determination of engine groups; Part 9: Test bench measurement of exhaust smoke density of engines for non-road mobile machinery. This part was proposed by the China Machinery Industry Federation. This part is under the jurisdiction of the National Technical Committee for Standardization of Internal Combustion Engines. Drafting units of this part: Shanghai Internal Combustion Engine Research Institute, Shanghai Diesel Engine Co., Ltd., Shanxi Vehicle Engine Research Institute, Jinma Diesel Engine General Factory, Jiangsu Jiangdong Group Co., Ltd. The main drafters of this part are: Pan Yongli, Qu Junming, Jiang Liqing, Lu Junyu, Duan Huiping, Sun Wenlan. GB/T8190.3—2003/1 ISO 8178-3:1994 Introduction
ISO/TC22 and ISO/TC70 have jointly developed the following international standards for the measurement of exhaust smoke from reciprocating internal combustion engines (RIC). IS08178-3 Reciprocating internal combustion engine emission measurement Part 3: Definition and measurement method of exhaust smoke under steady-state conditions ISO10054 Compression ignition internal combustion engine steady-state exhaust smoke measurement instrument Filter paper smoke meter ISO11614 Reciprocating internal combustion engine exhaust extinction measurement instrument and light absorption coefficient determination instrument ISO10054 and ISO11614 specify the measurement equipment used for different smoke measurement methods, while this part of ISO8178 specifies the application of this equipment on reciprocating internal combustion engines based on these international standards. The smoke density measurement method is used to measure visible emissions. The smoke density measurement results evaluated in accordance with this part of ISO8178 are different from those measured by the particle measurement method described in ISO8178-1 and ISO8178-2 or other standards and regulations. Moreover, the two smoke density measurement methods described in this part of ISO8178 are also different, and the scope of comparison between them is limited. 1 Scope
GB/T 8190.3—2003/ISO 8178-3: 1994 Reciprocating internal combustion engine emission measurement Part 3; Definition and measurement method of exhaust smoke density under steady-state conditions This part of GB/T8190 specifies two methods for measuring exhaust smoke characteristics under steady-state conditions of reciprocating internal combustion engines (RIC). One method is to evaluate the extinction of the exhaust smoke by measuring the brightness of the light beam, and the other method is to evaluate the soot content by measuring the blackness of the filter paper. If necessary, separate requirements can also be specified for engines for specific purposes. This part of GB/T8190 does not involve the measurement of transient conditions. When using a smoke meter under transient conditions, the results obtained cannot be compared due to different instrument types unless the sampling conditions are the same and the instrument characteristics are similar. This part of GB/T8190 applies to reciprocating internal combustion engines for land, rail traction and marine use, including engines used to drive agricultural tractors and road vehicles.
This part also applies to engines that drive road construction and earth-moving machinery, industrial trucks and other engines for which there is no appropriate national standard for measuring exhaust smoke.
Note: If water is sprayed into the exhaust system, measurements or sampling can only be carried out upstream of the water spray. 2 Normative references
The provisions of the following documents become provisions of this part through reference to this part of GB/T8190. For all dated references, all subsequent amendments (excluding errata) or revisions do not apply to this part, however, parties to agreements based on this part are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest edition applies to this part.
ISO2710-1 Vocabulary of reciprocating internal combustion engines Part 1: Terminology of engine design and operation IS) 10054 Compression ignition internal combustion engine Steady-state exhaust smoke measuring instrument Filter paper smoke meter ISO11614 Reciprocating compression ignition internal combustion engine exhaust extinction measuring instrument and light absorption coefficient measuring instrument 3 Terms and definitions
This standard adopts the following definitions (refer to ISO2710-1). 3.1
Exhaust gas smoke
Visible solid and/or liquid particles suspended in the exhaust gas formed by combustion or pyrolysis (according to ISO/IEC Guide 52). Note: Black smoke (carbon smoke) is mainly composed of carbon particles. Blue smoke is usually formed by droplets produced by incomplete combustion of fuel or lubricating oil. White smoke is usually produced by condensed water and/or liquid fuel.
Transmittancet
represents the part of light emitted by the light source and reaching the observer or instrument light receiver through the channel blocked by smoke, expressed as a percentage. 3.3
ExtinctionN
represents the part of light emitted by the light source and failing to reach the observer or instrument light receiver through the channel blocked by smoke. N=100r
expressed as a percentage.
GB/T 8190.3-2003/ISO 8178-3: 19943.4
Effective optical path lengthLaeffectiveopticalpathlengthLA represents the length of the part of the light beam between the light emitter and the light receiver that is penetrated by the exhaust flow, after the unevenness caused by the density gradient and edge effect is corrected, expressed in m.
Light absorption coefficient kThe coefficient k is defined by the Beer-Lambert law and is expressed by the formula: k
n(10))
n(1-%)
Note 1: For correct comparison, the ambient temperature and atmospheric pressure at the time of measurement should be indicated, as they affect the light absorption coefficient k. For comparison purposes, it is also recommended to record the exhaust temperature or correct it to 373K (see 4.4.1). Note 2: The term "light absorption coefficient" used in this standard is a general term, but a more accurate term should be "extinction coefficient". When used, the two terms have exactly the same meaning.
Soot
All components contained in the exhaust gas that make the filter paper black3.7
Filter smoke number (FSN) The filter smoke number (FSN) is a characteristic used to measure the exhaust smoke density and is expressed by the degree to which the clean filter paper is stained black by the soot contained in a specified exhaust smoke column when it passes through the filter paper.
Effective length of filtered smoke column LreffectivefiteredcolumnlengthLrThe length of the exhaust smoke column that actually passes through the filter paper, expressed in mm, taking into account the dead volume and leakage of the sampling system. 3.9
Opacimeter
Opacimeter
An instrument that measures smoke characteristics using the transmittance method (see ISO11614). 3.9.1
Partial-flow opacimeterAn instrument in which only part of the exhaust gas flow passes through the measuring chamber. 3.9.2
Full-flow opacimeter
Full-flow opacimeter
Instrument in which the entire exhaust gas flow passes through the measuring chamber 3.10
Filter-type smokemeter
Filter-paper smokemeter
Instrument in which a specified amount of exhaust gas passes through a clean filter paper of a certain area and the smoke density of the filter paper is determined by the degree of blackening of the filter paper (see ISO) 10054).
4 Method 1: Measurement of smoke density using an opacimeter 4.1 Purpose
This method can measure all three types of smoke density described in 3.1, but is most suitable for measuring black and blue smoke. NOTE: The measured value will be affected by the effective length of the optical path (3.4) and the temperature of the air flow. 2
4.2 Principle
GB/T8190.3—2003/ISO8178-3:1994 Make a light beam pass through the exhaust gas in the instrument measurement room, measure its light intensity, and compare it with the original light intensity. Note: The opacity meter can be made into a structure that uses full exhaust gas flow or partial exhaust gas flow (see 3.9.1 and 3.9.2). 4.3 Procedure
4.3.1 Partial Flow Smoke Extinction Meter
The exhaust gas sample flows through the sampling probe and sampling tube through the measuring chamber for continuous measurement. Measure the intensity of the received light. 4.3.2 Full Flow Smoke Extinction Meter
The measuring chamber is installed in the engine exhaust system or at a specified distance downstream from the end of the exhaust pipe. Measure the intensity of the received light. 4.4 General Requirements
The measuring instrument shall comply with the provisions of IS11614. Its related parts shall be able to withstand the requirements of the operating temperature. 4.4.1 Partial Flow Smoke Extinction Meter
4.4.1.1 Sampling Probe
The sampling probe shall be placed in the exhaust gas flow to extract a representative exhaust gas sample. The gas sample shall remain representative when it is drawn and passes through the measuring chamber.
When the whole is installed, the pipe section from the measuring probe to the sampling tube of the smoke extinction meter should be as short as possible and tilted upward. The pipeline shall be leak-free and shall have no sharp bends or constrictions to avoid unnecessary local resistance to the airflow. In order to achieve the required temperature conditions at the inlet of the measuring chamber, a heat exchanger may be installed in the sampling tube, but the exhaust characteristics shall not be changed as a result.
4.4.1.2 Measuring chamber
Due to reflection or scattering in the measuring chamber, the stray light irradiating the light receiver shall be minimized (for example, the inner surface may be coated with matte carbon black and a suitable overall layout may be adopted). 4.4.1.3 Exhaust flow rate
The transmittance of light through the exhaust gas shall be independent of the exhaust flow rate within the limits specified by the manufacturer of the opacimeter. 4.4.1.4 Exhaust temperature
When the average operating temperature T is not 373K, the opacity meter reading kobs should be corrected to 373K according to the following formula: keorn = kob × 373
Note: For a given temperature, such as 500K, the k value can be written as k500. When the above formula is applied, the exhaust temperature at all points in the measurement room should not be lower than 343K and not higher than 553K. If the temperature exceeds this range, no correction will be made, the reading should be recorded, and the temperature should be noted. This temperature range is based on the assumption that all moisture in the room exists in the form of steam, and all other non-condensable non-solid particles (such as non-condensable unburned fuel or lubricating oil) are negligible in the normal full-load exhaust. In this case, the correction formula that takes into account the effect of temperature is valid. If the exhaust contains non-solid components exceeding the normal proportion, the correction formula is invalid. For example, this formula is not applicable to the exhaust of a high sulfur heavy fuel oil engine because the exhaust may contain condensed acidic sulfide droplets at 373K. In this case, for comparison, the measurement must be carried out within a strict temperature range around 373K. Alternatively, if the measurement of such droplets is to be avoided, the exhaust temperature of the engine should be maintained above 413K and, if necessary, corrected to 373K to obtain a nominal reference value for comparison. 4.4.2 Full-flow extinction smoke meter
Note: When the light absorption coefficient is determined by a full-flow extinction smoke meter, the instructions on exhaust temperature in 4.4.1.4 are also applicable. 4.4.2.1 Arrangement of measuring equipment
The measuring equipment should be arranged in one of the following two ways. a) Built-in method: The measuring chamber is placed in the engine exhaust device. bh) Tail-mounted method (exhaust gas sampling): The instrument is used to measure the smoke density in the atmosphere at a specified distance downstream from the end of the exhaust pipe. 4.5 Requirements for optical system
GB/T 8190.3--2003/ISO 8178-3: 1994 The optical system shall consist of two parts: light source and light receiver. Devices with reflective elements may also be used. 4.5.1 Light source
The light source shall be an incandescent lamp with a color temperature range of 2800K-3250K (see ISO/IEC10526) or a green light emitting diode (LED) with a spectral peak of 550nm-570nm. 4.5.2 Light receiver
The light receiver shall consist of a photoelectric tube, and its spectral response curve shall be similar to the photopic curve of the human eye (maximum response within the wavelength range of 550nm-570nm, less than 4% of the maximum response below 430nm and above 680nm). When a green light emitting diode is used, it shall consist of a photodiode.
4.5.3 Reflection and protection elements
If reflection and protection elements are applied, the light source/receiver system shall not take the response outside the required frequency limit range specified in 4.5.2 and shall not cause significant deviations in the measured values ​​during the measurement. 4.5.4 Effective length of optical path
The value of the effective length of the optical path (3.4) is used to calculate the light absorption coefficient. When clean air is used to protect the photosensitive element from carbon deposits, the effect on the effective length of the optical path should be considered. The effective length of the optical path LA is usually specified by the instrument manufacturer. Note: Not all instruments that measure extinction are suitable for measuring the light absorption coefficient. This is because the effective length of the optical path is not always easy to determine, and when using a tail-mounted (exhaust sampling) instrument, the exhaust gas to be measured is not in a non-reflective cover. 4.6 Calibration
Neutral density filters of known transmittance must be used to calibrate the measuring instrument. 4.7 Measurement parameters
The instrument is used to measure the transmittance t, and then calculate the extinction N and the light absorption coefficient. The instrument can also directly display the light absorption coefficient k. 5 Method 2: Smoke density measurement using filter paper smoke meter 5.1 Application
This method is suitable for evaluating the soot content in exhaust gas. It is not suitable for measuring blue smoke or white smoke (see note 3.1). Note: When measuring low soot content, it is not necessary to replace the filter paper. The required long air column length can be achieved by operating the instrument several times. 5.2 Principle
Exhaust gas sample is drawn from the exhaust pipe with a sampling tube and passed through a filter paper of known area. The filter paper is stained black by the soot contained in the air column with an effective length of LF. Its blackness can be used to measure the soot content in the exhaust gas. The blackness of the filter paper can be evaluated by calculation based on the reflectivity of the blackened filter paper relative to the clean filter paper.
5.3 Procedure
The exhaust gas sample is sucked into the sampling probe and the sampling tube, and passed through the filter paper with a uniform airflow per unit area (for example, using a piston pump). The effective air column length is calculated based on the ratio of the effective suction volume to the blackened area of ​​the filter paper. The length is marked by the instrument manufacturer. 5.4 General requirements
The measuring instrument shall comply with the provisions of ISO10054. 5.5 Exhaust temperature and pressure
The reference conditions of the measured exhaust are 298K and 100kPa. When the difference between the measured exhaust density and the value under the reference condition is greater than 5%, the method for correcting the measured value to the standard reference condition shall be given. 6 Test report
If necessary, the test report shall include at least the following parts: a) Engine description:
-Manufacturer;
-Type and name;
Rated power;
Rated speed.
b) Description of the smoke meter or opacimeter:
Manufacturer;
Type and model of the instrument used.
Environmental conditions of the engine and smoke meter or opacimeter: temperature;
——pressure,
humidity.
Engine operating conditions during the test:
Power;
Speed;
Exhaust temperature at the inlet of a probe (if applicable); Exhaust pressure at the inlet of a probe (if applicable). e) Test results.
GB/T8190.3--2003/IS08178-3:1994The opacimeter should at least display the extinction value N, while the filter paper smoke meter should give the filter paper smoke value FSN. If possible, the light absorption coefficient should be calculated.
The smoke temperature in the opacimeter should be recorded, or the extinction N should be corrected to 373K. 5
GB/T 8190.3--2003/1SO 8178-3:1994[]
[［4]
References
ISO1585：1992 Road vehicle engine test specification Net power.
ISO3046-3:1989
9 Reciprocating internal combustion engine performance Part 3: Test measurements ISO/CIE10526：1991 International Commission on Illumination (CIE) standard colorimetric light sources ISO/IEC Guide 52：1990 Compendium of terms and definitions for luminaires. CIE38：1977 Radiative and photoelectric properties of materials and their measurement. 1) Available from the Central Bureau of the International Commission on Illumination, address: Kegelgasse 27, A-1030 Vienna, Austria61 Sampling probe
The sampling probe shall be placed in the exhaust gas flow to extract a representative exhaust gas sample. The gas sample shall remain representative when it is drawn and passes through the measuring chamber.
The pipe section from the measuring probe to the opacimeter sampling tube shall be as short as possible and inclined upwards during the overall installation. The pipe shall not leak and shall not have sharp bends or necking to avoid unnecessary local resistance to the air flow. In order to achieve the required temperature conditions at the inlet of the measuring chamber, a heat exchanger may be installed in the sampling tube, but the exhaust gas characteristics shall not be changed as a result.
4.4.1.2 Measuring chamber
Due to reflection or scattering in the measuring chamber, the stray light irradiating the light receiver shall be minimized (for example, by coating the inner surface with matte carbon black and adopting a suitable overall layout). 4.4.1.3 Exhaust gas flow rate
The transmittance of light through the exhaust gas shall be independent of the exhaust gas flow rate within the limits specified by the opacimeter manufacturer. 4.4.1.4 Exhaust temperature
When the average operating temperature T is not 373K, the opacity meter reading kobs should be corrected to 373K according to the following formula: keorn = kob × 373
Note: For a given temperature, such as 500K, the k value can be written as k500. When the above formula is applied, the exhaust temperature at all points in the measurement room should not be lower than 343K and not higher than 553K. If the temperature exceeds this range, no correction will be made, the reading should be recorded, and the temperature should be noted. This temperature range is based on the assumption that all moisture in the room exists in the form of steam, and all other non-condensable non-solid particles (such as non-condensable unburned fuel or lubricating oil) are negligible in the normal full-load exhaust. In this case, the correction formula that takes into account the effect of temperature is valid. If the exhaust contains non-solid components exceeding the normal proportion, the correction formula is invalid. For example, this formula is not applicable to the exhaust of a high sulfur heavy fuel oil engine because the exhaust may contain condensed acidic sulfide droplets at 373K. In this case, for comparison, the measurement must be carried out within a strict temperature range around 373K. Alternatively, if the measurement of such droplets is to be avoided, the exhaust temperature of the engine should be maintained above 413K and, if necessary, corrected to 373K to obtain a nominal reference value for comparison. 4.4.2 Full-flow extinction smoke meter
Note: When the light absorption coefficient is determined by a full-flow extinction smoke meter, the instructions on exhaust temperature in 4.4.1.4 are also applicable. 4.4.2.1 Arrangement of measuring equipment
The measuring equipment should be arranged in one of the following two ways. a) Built-in method: The measuring chamber is placed in the engine exhaust device. bh) Tail-mounted method (exhaust gas sampling): The instrument is used to measure the smoke density in the atmosphere at a specified distance downstream from the end of the exhaust pipe. 4.5 Requirements for optical system
GB/T 8190.3--2003/ISO 8178-3: 1994 The optical system shall consist of two parts: light source and light receiver. Devices with reflective elements may also be used. 4.5.1 Light source
The light source shall be an incandescent lamp with a color temperature range of 2800K-3250K (see ISO/IEC10526) or a green light emitting diode (LED) with a spectral peak of 550nm-570nm. 4.5.2 Light receiver
The light receiver shall consist of a photoelectric tube, and its spectral response curve shall be similar to the photopic curve of the human eye (maximum response within the wavelength range of 550nm-570nm, less than 4% of the maximum response below 430nm and above 680nm). When a green light emitting diode is used, it shall consist of a photodiode.
4.5.3 Reflection and protection elements
If reflection and protection elements are applied, the light source/receiver system shall not take the response outside the required frequency limit range specified in 4.5.2 and shall not cause significant deviations in the measured values ​​during the measurement. 4.5.4 Effective length of the optical path
The value of the effective length of the optical path (3.4) is used to calculate the light absorption coefficient. When clean air is used to protect the photosensitive element from carbon deposits, the effect on the effective length of the optical path should be considered. The effective length of the optical path LA is usually specified by the instrument manufacturer. Note: Not all instruments that measure extinction are suitable for measuring the light absorption coefficient. This is because the effective length of the optical path is not always easy to determine, and when using a tail-mounted (exhaust sampling) instrument, the exhaust gas to be measured is not in a non-reflective cover. 4.6 Calibration
Neutral density filters of known transmittance must be used to calibrate the measuring instrument. 4.7 Measurement parameters
The instrument is used to measure the transmittance t, and then calculate the extinction N and the light absorption coefficient. The instrument can also directly display the light absorption coefficient k. 5 Method 2: Smoke density measurement using filter paper smoke meter 5.1 Application
This method is suitable for evaluating the soot content in exhaust gas. It is not suitable for measuring blue smoke or white smoke (see note 3.1). Note: When measuring low soot content, it is not necessary to replace the filter paper. The required long air column length can be achieved by operating the instrument several times. 5.2 Principle
Exhaust gas sample is drawn from the exhaust pipe with a sampling tube and passed through a filter paper of known area. The filter paper is stained black by the soot contained in the air column with an effective length of LF. Its blackness can be used to measure the soot content in the exhaust gas. The blackness of the filter paper can be evaluated by calculation based on the reflectivity of the blackened filter paper relative to the clean filter paper.
5.3 Procedure
The exhaust gas sample is sucked into the sampling probe and the sampling tube, and passed through the filter paper with a uniform airflow per unit area (for example, using a piston pump). The effective air column length is calculated based on the ratio of the effective suction volume to the blackened area of ​​the filter paper. The length is marked by the instrument manufacturer. 5.4 General requirements
The measuring instrument shall comply with the provisions of ISO10054. 5.5 Exhaust temperature and pressure
The reference conditions of the measured exhaust are 298K and 100kPa. When the difference between the measured exhaust density and the value under the reference condition is greater than 5%, the method for correcting the measured value to the standard reference condition shall be given. 6 Test report
If necessary, the test report shall include at least the following parts: a) Engine description:
-Manufacturer;
-Type and name;
Rated power;
Rated speed.
b) Description of the smoke meter or opacimeter:
Manufacturer;
Type and model of the instrument used.
Environmental conditions of the engine and smoke meter or opacimeter: temperature;
——pressure,
humidity.
Engine operating conditions during the test:
Power;
Speed;
Exhaust temperature at the inlet of a probe (if applicable); Exhaust pressure at the inlet of a probe (if applicable). e) Test results.
GB/T8190.3--2003/IS08178-3:1994The opacimeter should at least display the extinction value N, while the filter paper smoke meter should give the filter paper smoke value FSN. If possible, the light absorption coefficient should be calculated.
The smoke temperature in the opacimeter should be recorded, or the extinction N should be corrected to 373K. 5
GB/T 8190.3--2003/1SO 8178-3:1994[]
[［4]
References
ISO1585：1992 Road vehicle engine test specification Net power.
ISO3046-3:1989
9 Reciprocating internal combustion engine performance Part 3: Test measurements ISO/CIE10526：1991 International Commission on Illumination (CIE) standard colorimetric light sources ISO/IEC Guide 52：1990 Compendium of terms and definitions for luminaires. CIE38：1977 Radiative and photoelectric properties of materials and their measurement. 1) Available from the Central Bureau of the International Commission on Illumination, address: Kegelgasse 27, A-1030 Vienna, Austria61 Sampling probe
The sampling probe shall be placed in the exhaust gas flow to extract a representative exhaust gas sample. The gas sample shall remain representative when it is drawn and passes through the measuring chamber.
The pipe section from the measuring probe to the opacimeter sampling tube shall be as short as possible and inclined upwards during the overall installation. The pipe shall not leak and shall not have sharp bends or necking to avoid unnecessary local resistance to the air flow. In order to achieve the required temperature conditions at the inlet of the measuring chamber, a heat exchanger may be installed in the sampling tube, but the exhaust gas characteristics shall not be changed as a result.
4.4.1.2 Measuring chamber
Due to reflection or scattering in the measuring chamber, the stray light irradiating the light receiver shall be minimized (for example, by coating the inner surface with matte carbon black and adopting a suitable overall layout). 4.4.1.3 Exhaust gas flow rate
The transmittance of light through the exhaust gas shall be independent of the exhaust gas flow rate within the limits specified by the opacimeter manufacturer. 4.4.1.4 Exhaust temperature
When the average operating temperature T is not 373K, the opacity meter reading kobs should be corrected to 373K according to the following formula: keorn = kob × 373
Note: For a given temperature, such as 500K, the k value can be written as k500. When the above formula is applied, the exhaust temperature at all points in the measurement room should not be lower than 343K and not higher than 553K. If the temperature exceeds this range, no correction will be made, the reading should be recorded, and the temperature should be noted. This temperature range is based on the assumption that all moisture in the room exists in the form of steam, and all other non-condensable non-solid particles (such as non-condensable unburned fuel or lubricating oil) are negligible in the normal full-load exhaust. In this case, the correction formula that takes into account the effect of temperature is valid. If the exhaust contains non-solid components exceeding the normal proportion, the correction formula is invalid. For example, this formula is not applicable to the exhaust of a high sulfur heavy fuel oil engine because the exhaust may contain condensed acidic sulfide droplets at 373K. In this case, for comparison, the measurement must be carried out within a strict temperature range around 373K. Alternatively, if the measurement of such droplets is to be avoided, the exhaust temperature of the engine should be maintained above 413K and, if necessary, corrected to 373K to obtain a nominal reference value for comparison. 4.4.2 Full-flow extinction smoke meter
Note: When the light absorption coefficient is determined by a full-flow extinction smoke meter, the instructions on exhaust temperature in 4.4.1.4 are also applicable. 4.4.2.1 Arrangement of measuring equipment
The measuring equipment should be arranged in one of the following two ways. a) Built-in method: The measuring chamber is placed in the engine exhaust device. bh) Tail-mounted method (exhaust gas sampling): The instrument is used to measure the smoke density in the atmosphere at a specified distance downstream from the end of the exhaust pipe. 4.5 Requirements for optical system
GB/T 8190.3--2003/ISO 8178-3: 1994 The optical system shall consist of two parts: light source and light receiver. Devices with reflective elements may also be used. 4.5.1 Light source
The light source shall be an incandescent lamp with a color temperature range of 2800K-3250K (see ISO/IEC10526) or a green light emitting diode (LED) with a spectral peak of 550nm-570nm. 4.5.2 Light receiver
The light receiver shall consist of a photoelectric tube, and its spectral response curve shall be similar to the photopic curve of the human eye (maximum response within the wavelength range of 550nm-570nm, less than 4% of the maximum response below 430nm and above 680nm). When a green light emitting diode is used, it shall consist of a photodiode.
4.5.3 Reflection and protection elements
If reflection and protection elements are applied, the light source/receiver system shall not take the response outside the required frequency limit range specified in 4.5.2 and shall not cause significant deviations in the measured values ​​during the measurement. 4.5.4 Effective length of the optical path
The value of the effective length of the optical path (3.4) is used to calculate the light absorption coefficient. When clean air is used to protect the photosensitive element from carbon deposits, the effect on the effective length of the optical path should be considered. The effective length of the optical path LA is usually specified by the instrument manufacturer. Note: Not all instruments that measure extinction are suitable for measuring the light absorption coefficient. This is because the effective length of the optical path is not always easy to determine, and when using a tail-mounted (exhaust sampling) instrument, the exhaust gas to be measured is not in a non-reflective cover. 4.6 Calibration
Neutral density filters of known transmittance must be used to calibrate the measuring instrument. 4.7 Measurement parameters
The instrument is used to measure the transmittance t, and then calculate the extinction N and the light absorption coefficient. The instrument can also directly display the light absorption coefficient k. 5 Method 2: Smoke density measurement using filter paper smoke meter 5.1 Application
This method is suitable for evaluating the soot content in exhaust gas. It is not suitable for measuring blue smoke or white smoke (see note 3.1). Note: When measuring low soot content, it is not necessary to replace the filter paper. The required long air column length can be achieved by operating the instrument several times. 5.2 Principle
Exhaust gas sample is drawn from the exhaust pipe with a sampling tube and passed through a filter paper of known area. The filter paper is stained black by the soot contained in the air column with an effective length of LF. Its blackness can be used to measure the soot content in the exhaust gas. The blackness of the filter paper can be evaluated by calculation based on the reflectivity of the blackened filter paper relative to the clean filter paper.
5.3 Procedure
The exhaust gas sample is sucked into the sampling probe and the sampling tube, and passed through the filter paper with a uniform airflow per unit area (for example, using a piston pump). The effective air column length is calculated based on the ratio of the effective suction volume to the blackened area of ​​the filter paper. The length is marked by the instrument manufacturer. 5.4 General requirements
The measuring instrument shall comply with the provisions of ISO10054. 5.5 Exhaust temperature and pressure
The reference conditions of the measured exhaust are 298K and 100kPa. When the difference between the measured exhaust density and the value under the reference condition is greater than 5%, the method for correcting the measured value to the standard reference condition shall be given. 6 Test report
If necessary, the test report shall include at least the following parts: a) Engine description:
-Manufacturer;
-Type and name;
Rated power;
Rated speed.
b) Description of the smoke meter or opacimeter:
Manufacturer;
Type and model of the instrument used.
Environmental conditions of the engine and smoke meter or opacimeter: temperature;
——pressure,
humidity.
Engine operating conditions during the test:
Power;
Speed;
Exhaust temperature at the inlet of a probe (if applicable); Exhaust pressure at the inlet of a probe (if applicable). e) Test results.
GB/T8190.3--2003/IS08178-3:1994The opacimeter should at least display the extinction value N, while the filter paper smoke meter should give the filter paper smoke value FSN. If possible, the light absorption coefficient should be calculated.
The smoke temperature in the opacimeter should be recorded, or the extinction N should be corrected to 373K. 5
GB/T 8190.3--2003/1SO 8178-3:1994[]
[［4]
References
ISO1585：1992 Road vehicle engine test specification Net power.
ISO3046-3:1989
9 Reciprocating internal combustion engine performance Part 3: Test measurements ISO/CIE10526：1991 International Commission on Illumination (CIE) standard colorimetric light sources ISO/IEC Guide 52：1990 Compendium of terms and definitions for luminaires. CIE38：1977 Radiative and photoelectric properties of materials and their measurement. 1) Available from the Central Bureau of the International Commission on Illumination, address: Kegelgasse 27, A-1030 Vienna, Austria64 Exhaust temperature
When the average operating temperature T is not 373K, the extinction smoke meter reading kobs should be corrected to 373K according to the following formula: keorn = kob × 373
Note: For a given temperature, such as 500K, the k value can be written as k500. When the above formula is applied, the exhaust temperature at all points in the measuring room should not be lower than 343K and not higher than 553K. If the temperature exceeds this range, no correction is made, the reading should be recorded, and the temperature should be noted. This temperature range is based on the assumption that all moisture in the room exists in the form of vapor, and all other non-condensable non-solid particles (such as non-condensable unburned fuel or lubricating oil) are negligible in the normal full-load exhaust. In this case, the correction formula that takes into account the effect of temperature is valid. If the exhaust contains non-solid components exceeding the normal proportion, the correction formula is invalid. For example, this formula is not applicable to the exhaust of a high-sulfur heavy oil engine because the exhaust may contain condensed acidic sulfide droplets at 373K. In this case, for comparison purposes, measurements must be made within a strict temperature range of about 373 K. Alternatively, if the measurement of such droplets is to be avoided, the exhaust temperature of the engine should be maintained above 413 K and, if necessary, corrected to 373 K to determine a nominal reference value for comparison. 4.4.2 Full-flow smoke extinction meter
Note: When a full-flow smoke extinction meter is used to determine the light absorption coefficient, the instructions regarding exhaust temperature in 4.4.1.4 also apply. 4.4.2.1 Arrangement of measuring equipment
The measuring equipment should be arranged in one of the following two ways. a) Built-in method: The measuring chamber is placed in the engine exhaust. bh) Tail-mounted method (exhaust sampling): The instrument is used to measure the smoke density in the atmosphere at a specified distance downstream from the end of the exhaust pipe. 4.5 Requirements for optical system
GB/T 8190.3--2003/ISO 8178-3: 1994 The optical system shall consist of two parts: light source and light receiver. Devices with reflective elements may also be used. 4.5.1 Light source
The light source shall be an incandescent lamp with a color temperature range of 2800K-3250K (see ISO/IEC10526) or a green light emitting diode (LED) with a spectral peak of 550nm-570nm. 4.5.2 Light receiver
The light receiver shall consist of a photoelectric tube, and its spectral response curve shall be similar to the photopic curve of the human eye (maximum response within the wavelength range of 550nm-570nm, less than 4% of the maximum response below 430nm and above 680nm). When a green light emitting diode is used, it shall consist of a photodiode.
4.5.3 Reflection and protection elements
If reflection and protection elements are applied, the light source/receiver system shall not take the response outside the required frequency limit range specified in 4.5.2 and shall not cause significant deviations in the measured values ​​during the measurement. 4.5.4 Effective length of the optical path
The value of the effective length of the optical path (3.4) is used to calculate the light absorption coefficient. When clean air is used to protect the photosensitive element from carbon deposits, the effect on the effective length of the optical path should be considered. The effective length of the optical path LA is usually specified by the instrument manufacturer. Note: Not all instruments that measure extinction are suitable for measuring the light absorption coefficient. This is because the effective length of the optical path is not always easy to determine, and when using a tail-mounted (exhaust sampling) instrument, the exhaust gas to be measured is not in a non-reflective cover. 4.6 Calibration
Neutral density filters of known transmittance must be used to calibrate the measuring instrument. 4.7 Measurement parameters
The instrument is used to measure the transmittance t, and then calculate the extinction N and the light absorption coefficient. The instrument can also directly display the light absorption coefficient k. 5 Method 2: Smoke density measurement using filter paper smoke meter 5.1 Application
This method is suitable for evaluating the soot content in exhaust gas. It is not suitable for measuring blue smoke or white smoke (see note 3.1). Note: When measuring low soot content, it is not necessary to replace the filter paper. The required long air column length can be achieved by operating the instrument several times. 5.2 Principle
Exhaust gas sample is drawn from the exhaust pipe with a sampling tube and passed through a filter paper of known area. The filter paper is stained black by the soot contained in the air column with an effective length of LF. Its blackness can be used to measure the soot content in the exhaust gas. The blackness of the filter paper can be evaluated by calculation based on the reflectivity of the blackened filter paper relative to the clean filter paper.
5.3 Procedure
The exhaust gas sample is sucked into the sampling probe and the sampling tube, and passed through the filter paper with a uniform airflow per unit area (for example, using a piston pump). The effective air column length is calculated based on the ratio of the effective suction volume to the blackened area of ​​the filter paper. The length is marked by the instrument manufacturer. 5.4 General requirements
The measuring instrument shall comply with the provisions of ISO10054. 5.5 Exhaust temperature and pressure
The reference conditions of the measured exhaust are 298K and 100kPa. When the difference between the measured exhaust density and the value under the reference condition is greater than 5%, the method for correcting the measured value to the standard reference condition shall be given. 6 Test report
If necessary, the test report shall include at least the following parts: a) Engine description:
-Manufacturer;
-Type and name;
Rated power;
Rated speed.
b) Description of the smoke meter or opacimeter:
Manufacturer;
Type and model of the instrument used.
Environmental conditions of the engine and smoke meter or opacimeter: temperature;
——pressure,
humidity.
Engine operating conditions during the test:
Power;
Speed;
Exhaust temperature at the inlet of a probe (if applicable); Exhaust pressure at the inlet of a probe (if applicable). e) Test results.
GB/T8190.3--2003/IS08178-3:1994The opacimeter should at least display the extinction value N, while the filter paper smoke meter should give the filter paper smoke value FSN. If possible, the light absorption coefficient should be calculated.
The smoke temperature in the opacimeter should be recorded, or the extinction N should be corrected to 373K. 5
GB/T 8190.3--2003/1SO 8178-3:1994[]
[［4]
References
ISO1585：1992 Road vehicle engine test specification Net power.
ISO3046-3:1989
9 Reciprocating internal combustion engine performance Part 3: Test measurements ISO/CIE10526：1991 International Commission on Illumination (CIE) standard colorimetric light sources ISO/IEC Guide 52：1990 Compendium of terms and definitions for luminaires. CIE38：1977 Radiative and photoelectric properties of materials and their measurement. 1) Available from the Central Bureau of the International Commission on Illumination, address: Kegelgasse 27, A-1030 Vienna, Austria64 Exhaust temperature
When the average operating temperature T is not 373K, the extinction smoke meter reading kobs should be corrected to 373K according to the following formula: keorn = kob × 373
Note: For a given temperature, such as 500K, the k value can be written as k500. When the above formula is applied, the exhaust temperature at all points in the measuring room should not be lower than 343K and not higher than 553K. If the temperature exceeds this range, no correction is made, the reading should be recorded, and the temperature should be noted. This temperature range is based on the assumption that all moisture in the room exists in the form of vapor, and all other non-condensable non-solid particles (such as non-condensable unburned fuel or lubricating oil) are negligible in the normal full-load exhaust. In this case, the correction formula that takes into account the effect of temperature is valid. If the exhaust contains non-solid components exceeding the normal proportion, the correction formula is invalid. For example, this formula is not applicable to the exhaust of a high-sulfur heavy oil engine because the exhaust may contain condensed acidic sulfide droplets at 373K. In this case, for comparison purposes, measurements must be made within a strict temperature range of about 373 K. Alternatively, if the measurement of such droplets is to be avoided, the exhaust temperature of the engine should be maintained above 413 K and, if necessary, corrected to 373 K to determine a nominal reference value for comparison. 4.4.2 Full-flow smoke extinction meter
Note: When a full-flow smoke extinction meter is used to determine the light absorption coefficient, the instructions regarding exhaust temperature in 4.4.1.4 also apply. 4.4.2.1 Arrangement of measuring equipment
The measuring equipment should be arranged in one of the following two ways. a) Built-in method: The measuring chamber is placed in the engine exhaust. bh) Tail-mounted method (exhaust sampling): The instrument is used to measure the smoke density in the atmosphere at a specified distance downstream from the end of the exhaust pipe. 4.5 Requirements for optical system
GB/T 8190.3--2003/ISO 8178-3: 1994 The optical system shall consist of two parts: light source and light receiver. Devices with reflective elements may also be used. 4.5.1 Light source
The light source shall be an incandescent lamp with a color temperature range of 2800K-3250K (see ISO/IEC10526) or a green light emitting diode (LED) with a spectral peak of 550nm-570nm. 4.5.2 Light receiver
The light receiver shall consist of a photoelectric tube, and its spectral response curve shall be similar to the photopic curve of the human eye (maximum response within the wavelength range of 550nm-570nm, less than 4% of the maximum response below 430nm and above 680nm). When a green light emitting diode is used, it shall consist of a photodiode.
4.5.3 Reflection and protection elements
If reflection and protection elements are applied, the light source/receiver system shall not take the response outside the required frequency limit range specified in 4.5.2 and shall not cause significant deviations in the measured values ​​during the measurement. 4.5.4 Effective length of the optical path
The value of the effective length of the optical path (3.4) is used to calculate the light absorption coefficient. When clean air is used to protect the photosensitive element from carbon deposits, the effect on the effective length of the optical path should be considered. The effective length of the optical path LA is usually specified by the instrument manufacturer. Note: Not all instruments that measure extinction are suitable for measuring the light absorption coefficient. This is because the effective length of the optical path is not always easy to determine, and when using a tail-mounted (exhaust sampling) instrument, the exhaust gas to be measured is not in a non-reflective cover. 4.6 Calibration
Neutral density filters of known transmittance must be used to calibrate the measuring instrument. 4.7 Measurement parameters
The instrument is used to measure the transmittance t, and then calculate the extinction N and the light absorption coefficient. The instrument can also directly display the light absorption coefficient k. 5 Method 2: Smoke density measurement using filter paper smoke meter 5.1 Application
This method is suitable for evaluating the soot content in exhaust gas. It is not suitable for measuring blue smoke or white smoke (see note 3.1). Note: When measuring low soot content, it is not necessary to replace the filter paper. The required long air column length can be achieved by operating the instrument several times. 5.2 Principle
Exhaust gas sample is drawn from the exhaust pipe with a sampling tube and passed through a filter paper of known area. The filter paper is stained black by the soot contained in the air column with an effective length of LF. Its blackness can be used to measure the soot content in the exhaust gas. The blackness of the filter paper can be evaluated by calculation based on the reflectivity of the blackened filter paper relative to the clean filter paper.
5.3 Procedure
The exhaust gas sample is sucked into the sampling probe and the sampling tube, and passed through the filter paper with a uniform airflow per unit area (for example, using a piston pump). The effective air column length is calculated based on the ratio of the effective suction volume to the blackened area of ​​the filter paper. The length is marked by the instrument manufacturer. 5.4 General requirements
The measuring instrument shall comply with the provisions of ISO10054. 5.5 Exhaust temperature and pressure
The reference conditions of the measured exhaust are 298K and 100kPa. When the difference between the measured exhaust density and the value under the reference condition is greater than 5%, the method for correcting the measured value to the standard reference condition shall be given. 6 Test report
If necessary, the test report shall include at least the following parts: a) Engine description:
-Manufacturer;
-Type and name;
Rated power;
Rated speed.
b) Description of the smoke meter or opacimeter:
Manufacturer;
Type and model of the instrument used.
Environmental conditions of the engine and smoke meter or opacimeter: temperature;
——pressure,
humidity.
Engine operating conditions during the test:
Power;
Speed;
Exhaust temperature at the inlet of a probe (if applicable); Exhaust pressure at the inlet of a probe (if applicable). e) Test results.
GB/T8190.3--2003/IS08178-3:1994The opacimeter should at least display the extinction value N, while the filter paper smoke meter should give the filter paper smoke value FSN. If possible, the light absorption coefficient should be calculated.
The smoke temperature in the opacimeter should be recorded, or the extinction N should be corrected to 373K. 5
GB/T 8190.3--2003/1SO 8178-3:1994[]
[［4]
References
ISO1585：1992 Road vehicle engine test specification Net power.
ISO3046-3:1989
9 Reciprocating internal combustion engine performance Part 3: Test measurements ISO/CIE10526：1991 International Commission on Illumination (CIE) standard colorimetric light sources ISO/IEC Guide 52：1990 Compendium of terms and definitions for luminaires. CIE38：1977 Radiative and photoelectric properties of materials and their measurement. 1) Available from the Central Bureau of the International Commission on Illumination, address: Kegelgasse 27, A-1030 Vienna, Austria61 Light Source
The light source shall be an incandescent lamp with a color temperature range of 2800K-3250K (see ISO/IEC10526) or a green light emitting diode (LED) with a spectral peak of 550nm-570nm. 4.5.2 Photoreceiver
The photoreceiver shall consist of a photoelectric tube with a spectral response curve similar to the photopic curve of the human eye (maximum response in the wavelength range of 550nm-570nm, less than 4% of the maximum response below 430nm and above 680nm). When a green light emitting diode is used, it shall consist of a photodiode.
4.5.3 Reflection and Protection Components
If reflection and protection components are used, the light source/receiver system shall not take the response outside the required frequency limits specified in 4.5.2 and shall not cause significant deviations in the measured values ​​during the measurement. 4.5.4 Effective length of optical path
The value of the effective length of optical path (3.4) is used to calculate the light absorption coefficient. When clean air is used to protect the photosensitive element from carbon deposition, the effect on the effective length of the optical path should be considered. The effective length of the optical path LA is usually specified by the instrument manufacturer. Note: Not all instruments that measure extinction are suitable for measuring the light absorption coefficient. This is because the effective length of the optical path is not always easy to determine, and when using a tail-mounted (exhaust sampling) instrument, the exhaust gas to be measured is not in a non-reflective cover. 4.6 Calibration
Neutral density filters with known transmittance must be used to calibrate the measuring instrument. 4.7 Measurement parameters
The instrument is used to measure the transmittance t to calculate the extinction N and the light absorption coefficient. The instrument can also be used to directly display the light absorption coefficient k. 5 Method 2: Smoke density measurement using a filter paper smoke meter 5.1 Application
This method is suitable for evaluating the carbon soot content in exhaust gas. Rain is not suitable for measuring blue smoke or white smoke (see note 3.1). Note: When measuring low soot content, it is not necessary to replace the filter paper. The required long air column length can be achieved by operating the instrument several times. 5.2 Principle
Exhaust gas sample is drawn from the exhaust pipe with a sampling tube and passed through a filter paper of known area. The filter paper is stained black by the soot contained in the air column with an effective length of LF. Its blackness can be used to measure the soot content in the exhaust gas. The blackness of the filter paper can be evaluated by calculation based on the reflectivity of the blackened filter paper relative to the clean filter paper.
5.3 Procedure
The exhaust gas sample is sucked into the sampling probe and the sampling tube, and passed through the filter paper with a uniform air flow per unit area (for example, using a piston pump). The effective air column length is calculated based on the ratio of the effective suction volume to the blackened area of ​​the filter paper. The length is marked by the instrument manufacturer. 5.4 General requirements
The measuring instrument shall comply with the provisions of ISO10054. 5.5 Exhaust temperature and pressure
The reference conditions of the measured exhaust gas are 298K and 100kPa. When the difference between the measured exhaust density and the value under the reference conditions is greater than 5%, the method of correcting the measured value to the standard reference conditions should be given. 6 Test report
If necessary, the test report should at least include the following parts: a) Engine description:
-Manufacturer;
-Type and name;
Rated power;
Rated speed.
b) Smoke meter or opacimeter description:
Manufacturer;
Type and model of the instrument used.
Environmental conditions of the engine and smoke meter or opacimeter: temperature;
-Pressure,
Humidity.
Engine operating conditions during the test:
Power;
Speed;
Exhaust temperature at the inlet of a probe (if applicable); Exhaust pressure at the inlet of a probe (if applicable). e) Test results.
GB/T8190.3--2003/IS08178-3:1994The smoke extinction meter should at least display the extinction N, while the filter paper smoke meter should give the filter paper smoke value FSN. If possible, the light absorption coefficient should be calculated.
The smoke temperature in the smoke extinction meter should be recorded, or the extinction N should be corrected to 373K. 5
GB/T 8190.3--2003/1SO 8178-3:1994[]
[［4]
References
ISO1585：1992 Road vehicle engine test specification Net power.
ISO3046-3:1989
9 Reciprocating internal combustion engine performance Part 3: Test measurements ISO/CIE10526：1991 International Commission on Illumination (CIE) Standard Colorimetric Light Sources ISO/IEC Guide 52：1990 Compilation of Terms and Definitions for Luminaries. CIE38：1977 Radiative and photoelectric properties of materials and their measurement. 1) Copies are available from the Central Bureau of the International Commission on Illumination, Kegelgasse 27, A-1030 Vienna, Austria61 Light Source
The light source shall be an incandescent lamp with a color temperature range of 2800K-3250K (see ISO/IEC10526) or a green light emitting diode (LED) with a spectral peak of 550nm-570nm. 4.5.2 Photoreceiver
The photoreceiver shall consist of a photoelectric tube with a spectral response curve similar to the photopic curve of the human eye (maximum response in the wavelength range of 550nm-570nm, less than 4% of the maximum response below 430nm and above 680nm). When a green light emitting diode is used, it shall consist of a photodiode.
4.5.3 Reflection and Protection Components
If reflection and protection components are used, the light source/receiver system shall not take the response outside the required frequency limits specified in 4.5.2 and shall not cause significant deviations in the measured values ​​during the measurement. 4.5.4 Effective length of optical path
The value of the effective length of optical path (3.4) is used to calculate the light absorption coefficient. When clean air is used to protect the photosensitive element from carbon deposition, the effect on the effective length of the optical path should be considered. The effective length of the optical path LA is usually specified by the instrument manufacturer. Note: Not all instruments that measure extinction are suitable for measuring the light absorption coefficient. This is because the effective length of the optical path is not always easy to determine, and when using a tail-mounted (exhaust sampling) instrument, the exhaust gas to be measured is not in a non-reflective cover. 4.6 Calibration
Neutral density filters with known transmittance must be used to calibrate the measuring instrument. 4.7 Measurement parameters
The instrument is used to measure the transmittance t to calculate the extinction N and the light absorption coefficient. The instrument can also be used to directly display the light absorption coefficient k. 5 Method 2: Smoke density measurement using a filter paper smoke meter 5.1 Application
This method is suitable for evaluating the carbon soot content in exhaust gas. Rain is not suitable for measuring blue smoke or white smoke (see note 3.1). Note: When measuring low soot content, it is not necessary to replace the filter paper. The required long air column length can be achieved by operating the instrument several times. 5.2 Principle
Exhaust gas sample is drawn from the exhaust pipe with a sampling tube and passed through a filter paper of known area. The filter paper is stained black by the soot contained in the air column with an effective length of LF. Its blackness can be used to measure the soot content in the exhaust gas. The blackness of the filter paper can be evaluated by calculation based on the reflectivity of the blackened filter paper relative to the clean filter paper.
5.3 Procedure
The exhaust gas sample is sucked into the sampling probe and the sampling tube, and passed through the filter paper with a uniform air flow per unit area (for example, using a piston pump). The effective air column length is calculated based on the ratio of the effective suction volume to the blackened area of ​​the filter paper. The length is marked by the instrument manufacturer. 5.4 General requirements
The measuring instrument shall comply with the provisions of ISO10054. 5.5 Exhaust temperature and pressure
The reference conditions of the measured exhaust gas are 298K and 100kPa. When the difference between the measured exhaust density and the value under the reference conditions is greater than 5%, the method of correcting the measured value to the standard reference conditions should be given. 6 Test report
If necessary, the test report should at least include the following parts: a) Engine description:
-Manufacturer;
-Type and name;
Rated power;
Rated speed.
b) Smoke meter or opacimeter description:
Manufacturer;
Type and model of the instrument used.
Environmental conditions of the engine and smoke meter or opacimeter: temperature;
-Pressure,
Humidity.
Engine operating conditions during the test:
Power;
Speed;
Exhaust temperature at the inlet of a probe (if applicable); Exhaust pressure at the inlet of a probe (if applicable). e) Test results.
GB/T8190.3--2003/IS08178-3:1994The smoke extinction meter should at least display the extinction N, while the filter paper smoke meter should give the filter paper smoke value FSN. If possible, the light absorption coefficient should be calculated.
The smoke temperature in the smoke extinction meter should be recorded, or the extinction N should be corrected to 373K. 5
GB/T 8190.3--2003/1SO 8178-3:1994[]
[［4]
References
ISO1585：1992 Road vehicle engine test specification Net power.
ISO3046-3:1989
9 Reciprocating internal combustion engine performance Part 3: Test measurements ISO/CIE10526：1991 International Commission on Illumination (CIE) Standard Colorimetric Light Sources ISO/IEC Guide 52：1990 Compilation of Terms and Definitions for Luminaries. CIE38：1977 Radiative and photoelectric properties of materials and their measurement. 1) Copies are available from the Central Bureau of the International Commission on Illumination, Kegelgasse 27, A-1030 Vienna, Austria61994[]
[［4]
References
ISO1585：1992 Road vehicle engine test specification Net power.
ISO3046-3:1989
9 Reciprocating internal combustion engine performance Part 3: Test measurements ISO/CIE10526：1991 International Commission on Illumination (CIE) Standard colorimetric luminaires ISO/IEC Guide 52：1990 Compilation of terms and definitions for luminaires. CIE38：1977 Radiative and photoelectric properties of materials and their measurement. 1) Copies are available from the Central Bureau of the International Commission on Illumination, Kegelgasse 27, A-1030 Vienna, Austria61994[]wwW.bzxz.Net
[［4]
References
ISO1585：1992 Road vehicle engine test specification Net power.
ISO3046-3:1989
9 Reciprocating internal combustion engine performance Part 3: Test measurements ISO/CIE10526：1991 International Commission on Illumination (CIE) Standard colorimetric luminaires ISO/IEC Guide 52：1990 Compilation of terms and definitions for luminaires. CIE38：1977 Radiative and photoelectric properties of materials and their measurement. 1) Copies are available from the Central Bureau of the International Commission on Illumination, Kegelgasse 27, A-1030 Vienna, Austria6
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