This standard specifies the measurement method of exhaust emission pollutants (CO, NO?X and HC) of marine diesel engines by bench test. This standard is applicable to marine diesel engines, marine diesel engines for power generation and yacht diesel engines. GB/T 15097-1994 Measurement method of exhaust emission pollutants from marine diesel engines GB/T15097-1994 Standard download decompression password: www.bzxz.net

UDC 629. 12 : 621. 436.1. 06 : 543. 06U 44
National Standard of the People's Republic of China
GB/T 15097—94
Measurement method for emission pollutants ofexhaust gas of marine diesel engineMeasurement method for emission pollutants ofexhaust gas of marine diesel enginePublished on 1994-06-30
State Administration of Technical Supervision
Implemented on 1995-04-01
W.National Standard of the People's Republic of China
Measurement method for emission pollutants ofexhaust gas of marine diesel engine enginc1Subject content and scope of application
GB/T15097-94
This standard specifies the measurement method of the emission rate and specific emission of pollutants (CO, NO, and HC) of diesel engines (hereinafter referred to as diesel) in the bench test.
This standard is applicable to diesel main engines, marine diesel engines for power generation, and yacht diesel engines. 2 Reference standards
(GB1105 Internal combustion engine bench performance test method GB8190 Technical requirements for diesel engine exhaust analysis system GB8191 Determination of carbon monoxide, carbon dioxide and nitrogen oxides in diesel engine exhaust - Non-spectroscopic infrared method GB8192 Determination of nitrogen oxides in diesel engine exhaust - Chemiluminescence analysis GB8193 Determination of total magnetic hydrogen compounds in diesel engine exhaust - Flame ionization method 3 Measurement cases and instruments
3.1 Measurement conditions
3.1.1 The diesel engine submitted for measurement shall complete the running-in operation according to the manufacturer's technical documents and meet the specified performance indicators. 3.1.2 The environmental conditions shall comply with the provisions of G1105. 3.1.3 Intake resistance of diesel engine The pressure should be controlled within ±0.3kPa of the maximum allowable value at the maximum air consumption specified by the manufacturer. 3.1.4 The back pressure of the exhaust system of the tank engine should be controlled within ±0.65kPa of the maximum allowable value at the calibrated working conditions specified by the manufacturer. 3.1.5 The aircraft should use the fuel specified in the manufacturer's technical documents. During the comparative test, the same brand of fuel should be used, and the fuel brand and fuel temperature at the injection pump inlet should be indicated in the measurement report. 3.2 Measurement system and instruments
3.2.1 The sampling system should comply with the provisions of GB8190, and the exhaust samples should be collected by direct continuous sampling method. 3.2.2 The emission concentration of CO should be measured using a non-dispersive infrared (NDIR) analyzer, and it should comply with GB 3.2.3 The emission concentration of NO2 can be measured by chemiluminescence (CLD) analyzer and should comply with the provisions of GB 8192. 3.2.4 The concentration of HC can be measured by heated hydrogen flame ionization (HF1D) analyzer and should comply with the provisions of GB 8193. 3.2.5 The flow meter used to measure the air consumption of diesel engines should have an accuracy of ±2% of the full range. 3.2.6 The instruments used to measure other parameters of diesel engines should comply with the provisions of GB1105, 4 Measurement method
4.1 The measurement cycle of exhaust pollutants from diesel engines should be carried out according to the operating conditions and sequence specified in Table 1. Approved by the State Administration of Technical Supervision on June 30, 1994 and implemented on April 1, 1995bzxz.net
W. Measurement cycle type
(Diesel engine)
(Dry main engine)
(Constant speed engine)
(Oil-loading engine)
GB/T 15097-·94
Speed ​​percentage
Negative gear percentage
Weighting coefficient WP
Speed ​​percentage
Load percentage
Weighting coefficient W
Speed ​​percentage
Load percentage
Weighting coefficient W
Speed ​​percentage
Load percentage
Weighting coefficient Wr
c.34. 2.15 0. 25
2. 15 1 0. 15
1001100
Note, (1) Speed ​​percentage refers to the percentage of the rated speed of the diesel engine at the measuring point. The load percentage refers to the percentage of the engine power at the measuring point to the rated power of the engine.
4.2 Install the sampling probe at the straight pipe section 0.5~31 downstream of the exhaust manifold or exhaust gas outlet of the diesel engine, and connect it to the sampling system of the CO, NO, and HC analyzers.
4.3 Calibrate the zero point and scale of the CO, NO, and HC analyzers. 4. The measurement should be carried out after the diesel engine is stable. The speed adjustment deviation of each measuring point should not be greater than ±1% of the rated speed or ±3r/min; the load adjustment error should not be greater than ±2% of the full lean load. The measurement cycle should be completed continuously according to the measuring points and sequence specified in Table 1, otherwise the measurement is invalid.
4.5 Each measuring point is operated for 1G min, and the last 5 min. Measure the exhaust pollutants of diesel according to the provisions of the table, and continuously record the output signals of the CO, NO, and HC analyzers on the long chart recording paper. 4.6 During the measurement of exhaust pollutants, measure and record the parameters according to Appendix 4 (Supplement). 4.7 Find the position of the CO, NO and HIC measurement record line of the last 1 min of each measurement point, and divide it into 10 equal intervals to determine the average reading of each equal interval. The average value of the average readings represents the emission concentration of CO, NO and HC at the measurement point. The emission concentration of CO and NO is expressed in 10-; the emission concentration is expressed in C×10-. 4. B After completing the last measurement point, the 4. 3 Determine the zero point and span calibration of the CO, NO, and HC analyzers - When the zero point drift of the analyzer before and after the measurement exceeds 2% of the full scale of the analyzer or the difference between the zero point and the span calibration point exceeds 1% of the full scale of the analyzer, the measurement is invalid. 5 Calculation of measurement results
5.1 Calculate the CO, NOI and HC mass displacement of each measuring point according to formula (1), formula (2) and formula (3). Geo = 0.966rG,(T) + G2V(actual) × K × 10-\GN, = 1.586G,(T) + CIVNo(measured) × K × 10-3Gtc = 0.478tG,(T) → + GVac(measured) × 10-a1
W.GB/T15097-94
In the formula, Gco——CO mass emission at each measuring point, x/hG NOx mass emission at each measuring point g/b
Gx HC mass emission at each measuring point +E/h: H (dry)——diesel engine air consumption at each measuring point converted to standard ambient conditions, gG-diesel engine fuel consumption at each measuring point, kg/1, Veu (actual)——CO emission concentration at each measuring point determined according to item 1, X10; VM (measured)…～NOx emission concentration at each measuring point determined according to item 2, X10-\, V (actual)～HC emission concentration at each measuring point determined according to item 4, C×10*, K—average and liquid conversion coefficient + see Appendix B (supplement); K—intake air correction coefficient for N emission concentration (see Appendix C (supplement). 5.2 Calculate the specific emission of CO, NOx, and HC at each measuring point according to formula (4), formula (5), and formula (6). Formula: b---- specific emission of CO at each measuring point, g (kW·h); hn. specific emission of NOx at each measuring point, gi (kW, h); sc—specific emission of HC at each measuring point, g/W·h); P—power at each measuring point, kW.
5.3 Formula (7), formula (8) and formula (9) are used to calculate the weighted average relative emission of (O.NO, and IIC). BScp
W, ESex-
(Gco + W,)
E(GN, W)
Z(Ga Wp)
--weighted average relative emission of CO in the first measurement cycle/(kW·h); -weighted average relative emission of N () in the first measurement cycle,/(kW,h); RSym--weighted average relative emission of HC in the first measurement cycle + g/{k·h); W. —weighting coefficient of each measurement cycle, N1. (4)
W.GB/T 15097—94
p-o1x3
Looking back
Weighted coefficient
Intake intensity
Operating condition number
GB/T 15097---94
Appendix B
Conversion of dry and wet basis of CO emission concentration of diesel engine (supplement)
B1CO dry and wet basis conversion is calculated according to formula (31): Vca (wet) - Kw× Vce (real)
B2 dry, wet basis concentration conversion coefficient Kw connects formula (B2), formula (E3). Formula (B4> calculation, Kw1-W
0.5+7.63MH×10
(4.767.63H10-3)M+0.253
12. 01 + 1. 068
MG7C(F)1137 26+13. 75HX10
In the formula:
--the volume of water vapor in the exhaust of the diesel engine, the oxygen/carbon atomic ratio of the diesel engine, take y=1.75; M--the number of moles of oxygen in the dense air sucked into the diesel engine; the ambient air content of condensate (water) during the test (dry dense air) H-
B3 The humidity of the ambient air during the test is calculated according to the formula (BS). H
In the test:
--the relative humidity of the intake air.%;
--the humidity and water pressure at the dry bulb temperature (intake temperature), Pa (obtained from Table B2).
B4 The K value at different Gr/G (F) and H can also be found in Table BI. Table B1 Conversion coefficient of dry and mixed concentration K
GG, (in)
0, 283
-+ B4)
W.1. 75
GB/T15097—94
Continued Table B1
Note: When /G (thousand) is another value, the internal method can be used to obtain the K value. 9.030
0. 0410. 045
C.873.865
Q- 649
GB/T15097—-94
Blister and water vapor repulsion at various temperatures
1- 771
2- 294
5- 531
1: 477
GB/T 15097—94
Appendix C
Intake humidity correction for NO emission concentration of diesel engine (supplementary stick)
C1NO, Intake humidity correction for emission concentration is calculated using formula (Ci) and formula (C2). Vuu(corrected) = Ki× Vrn(wet)
Where: Vo,(corrected)—NO emission concentration after air intake air quality correction C2NC emission concentration is air intake air quality correction coefficient K, calculated according to formula (C2). K+A-
5.97)+1.88(:-25)
Where: A 0. 044(G/G,(T)) -- 0. 003 8; H --- 0. 126[G:/GF)] + 0. 005 3 *Intake air temperature during the test, ℃.
Additional remarks:
This standard is proposed by China State Shipbuilding Corporation. The standard was drafted by the Seventh Research Institute of China State Shipbuilding Corporation. This standard was drafted by Harbin Shipbuilding Engineering College and the Sixth Research Institute of China State Shipbuilding Corporation. The drafters of this standard are Wei Rongnian, Liu Yunan, Zhang Bin'a, Han Banming, Liu Guangzu (C1)
++(C2)
W.
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