Some standard content:
1C827.020
Machinery Industry Standard of the People's Republic of China
JBT9773.1-1999
Diesel Engines
Bench Test and Examination Methods
Dicscgines--Test-bed measurement and examinationPublished on 1999-09-17
Published by the State Bureau of Machinery Industry
Implemented on 2000-01-01
JB/T9773.1—1999
4This standard is a revision of NJ289—835 Diesel Engines, Bench Test and Examination Methods. During the revision, the original standard was modified in a substantial way, but the main technical contents remained unchanged. This standard replaces NJ28983 from the date of implementation. The Appendix of this standard is the appendix of the standard, and Appendix B of this standard is the appendix of water extraction.
This standard was proposed and managed by the National Technical Committee for Standardization of Internal Combustion Engines. The technical standard initiators are: Shanghai Internal Combustion Engine Research Institute and Shanghai Diesel Engine Co., Ltd. The main initiators of this standard are: Qu Junming, Pan Yongli and Jiang Liqing. This standard was first issued in 1983:
1 Scope
Machinery Industry Standard of the People's Republic of China
Diesel Engine Bench Test Assessment Method
Diesel engines-Text-height measurement endexamlnation This standard specifies the test methods for finalization, regular inspection and transfer of diesel engine products, JB/T9773.1—1949
Generation 289
This standard is applicable to tractors, gasoline engines, diesel engines for downstream applications, and fixed, mobile and small marine diesel engines. 2 Referenced standards
"The multiple texts contained in the engraved standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the indicated All the questions are valid, all standard groups will be revised, the parties using this standard should explore the possibility of using the following standard mother new version, GB: 1105-987 internal combustion engine bench performance test method Bt859-1989 internal combustion engine noise power level determination standard QB9486-1968 diesel engine steady state exhaust smoke and determination method JB.T51127-1 series of small and medium power oil-drying machine product feasibility assessment 3 test categories
3. 1 Finalization test
All new products or diesel engines that have been strengthened or significantly improved must undergo comprehensive performance tests, reliability tests, and durability tests before they are put into production, in order to assess whether the various technical and economic indicators of the diesel engine and the reliability and durability of its components meet the requirements of the design task book and relevant technical documents.
3.2 Regular inspection and testing
For diesel engines produced on a batch basis, a certain number of products shall be regularly selected for performance tests, reliability tests, and durability tests, in order to verify the quality of the diesel engines. Whether the manufacturing quality of the engine complies with the provisions of the technical documents. 4 Test prototype
4.1 Number of machines
Hot shock test is not applicable to one set (applicable to air-cooled, evaporative-cooled, condensing-gas-cooled diesel engines) and the endurance test is not limited to one set.
4.2 Sampling method
4.2.1 Finalization test: randomly selected from the new products developed by the manufacturer, the products with large quantity improvement, 4.2.2 Regular inspection test: randomly selected from the products in the manufacturing and inspection qualified product database. 4.2.3 Identification test of transferred products: randomly selected from the first batch of products. Approved by the State Bureau of Machinery Industry on September 17, 1999 and implemented on January 1, 2000
5 Test conditions
JB/T9773.I1999
5.1 The test prototype shall comply with the requirements of the product drawings and technical documents. 5.2 The test sample must be equipped with all accessories specified in the product technical specifications. If the exhaust muffler is not installed during the test, the exhaust pipe pressure of the test equipment should be equivalent to that of the product. 5.3 Standard atmospheric conditions, conversion of power and fuel consumption rate, as well as test equipment, methods and specifications should comply with the provisions of GBT1105. If the ambient atmospheric conditions (atmospheric pressure and intake air humidity) during the test deviate from the standard atmospheric conditions, they should be converted and explained in the test report.
5.4 Test diesel, engine oil and cooling medium, fuel temperature, water outlet temperature of the engine during the test. Oil pressure and temperature, as well as the cooling medium outlet temperature of the intercooler, etc. should all comply with the specifications in the diesel engine manual. 6 Test procedures
6.1 The diesel engine can be run-in and adjusted, but the running-in time shall not exceed 4sl, and the operating temperature shall be determined by the manufacturer. 6.2 Performance test.
.3 Check the engine and re-measure the dimensions of the main parts as specified in 8.5. f. 4 After the test, re-install the engine and run-in and full adjustment. The running-in time shall not exceed 12 hours. The operating conditions shall be confirmed. 6.5 Reliability: Durability test.
6.6 Performance re-test
6.7 Check the engine and re-measure the dimensions of the main parts.
Note: The heat shock test does not carry out the measurement of the dimensions of the parts. 7 Performance test
7. Test requirements and methods:
a) Starting performance test:
b) Service uniformity test:
c) Mechanical efficiency measurement;
d) Load characteristic or speed characteristic or quasi-property test (depending on the purpose of the diesel engine);
e) Speed characteristic test;
x) No-load characteristic and maximum no-load stable speed (rapid speed) test:
x) Reversing of marine main engine, to rotation, Stop the cylinder, stop the increase of the medical device and perform the minimum working stable speed test; h) Safety equipment test;
Exhaust smoke measurement shall be carried out in accordance with the provisions of 4;
j) Noise measurement shall be carried out in accordance with the provisions of GB/T1B59: k) Oil consumption and measurement shall be carried out in accordance with the provisions of Appendix A (Appendix to the standard): 1H Other performance tests; According to the requirements of the engine design task book and technical documentation, the engine vibration, shaft torsion operation, back pressure test and gas emission measurement shall be carried out.
The above tests are carried out in accordance with the provisions of GB 1105. 7.2 Before the endurance test, the performance test shall be carried out according to the items and methods specified in 7.1: After the endurance test, the performance retest shall be carried out according to the six items a), d), e), f), ) and k) specified in 7.1. 2
, IB 973, [—1999
7. 3 Before and after the thermal shock test, the performance test shall be carried out according to the four items d), e), and i in 7.1. Note: After the endurance test and before the performance test, it is not allowed to adjust the valve timing, oil pressure and supply angle. Reliability and durability test
The diesel engine can only be carried out after the performance test is qualified. Durability test % "Durability test
8.1. For diesel engines with rated power of 15min power, according to the table!, one cycle is every 2h, and a total of 500 cycles are run. That is, 1000h, the table
Rated speed
Speed when sensitive to large torque
Suspended speed
Rated power
Power when measuring large torque
8.1.1 For diesel engines with rated power of 1h power, According to Table 2, every 8 hours is one cycle. After 40 cycles, it is operated continuously under the calibrated working condition for 180 hours, a total of 500 hours, that is, one large cycle. Repeat 4 large cycles, the total operation time is 2000 hours. Table 2
Standard control speed
Avoid high altitude ideal setting speed
Yellow speed at maximum torque
Standard power
Power at maximum torque
8.1.3 The calibrated power is 12 h diesel engine, according to the rated speed, every 81 is a cycle, after running 40 cycles, set the rated speed to 110% (the main engine is 103% of the rated speed, the rest is based on the rated speed) and continue to run for 180L/500h, that is, one big cycle. Perform 4 cycles, the total running time is 2Mah. 1) The feasibility test specifications are as specified in H.T51127. Font size
Rated speed
Maximum rated speed ||t t||Maximum load time transmission
JB Hall 3.1—1999
Rated power
Power at maximum torque
81.4 Rated power ratio of the diesel engine, 110% rated power (main engine at 103% rated speed, long connected rated speed) continuous operation, total operation time is 2000h, Note: The load is greater than 73.6 yuan, which is considered to be in the safety 8.1.3 and %.1.4 During the test, the total time is allowed to be reduced, but it should not exceed 1. 2 Thermal shock test
Water-cooled diesel lubrication system (except for Senfa cooling and air-avoiding cooling type, thermal shock test should be carried out according to Table 4, each 10m is a cycle. I run 3000 cycles, part 500h
calibration transfer
you Di-50
calibration station rate
water humidity
1 Or the water outlet humidity of the rack lubrication machine is limited. The above-mentioned water outlet dish virtual and are changed during the test, but the temperature difference (a) is greater than or equal to 60, 2 "time median sweep water temperature change through the period and stability time, the specified time should be not less than 2m. 3 Test equipment schematic see Appendix B (suggested appendix), 4 Regular inspection and testing, such as product If the quality is stable and can be dispersed, this test is not required: 8.3 Inspection and maintenance
Month, 3.1 During the acid test in 8.1 and 8.2, maintenance and maintenance should be carried out in accordance with the diesel engine instruction manual. The maintenance time should be arranged after a complete cycle is completed. The time and items of maintenance should be recorded, and the maintenance time is not included in the operating time: 3.2 Check the working conditions of the test equipment, instruments and meters at any time. If any fault or damage is found, it should be promptly eliminated or replaced, and records should be kept.
Check the operation of the diesel engine at any time. If oil leakage, water mixing, air leakage or other faults are found, they should be eliminated immediately and records should be kept. 8.3.3
8.3.4 If the following conditions are found during the test, stop the engine immediately and wait for adjustment of the exhaust gas The test shall be conducted after the following exceptions: a) the engine power drops or the oil consumption rate increases to 5% of the calibrated value, or the exhaust temperature rises to 10% of the calibrated value; b) the engine fails to meet the specifications and may cause damage to the engine or endanger personal safety. 4
&4 Measured data
8.4.1 When conducting the test in accordance with 8.1, the following data shall be measured: JB/T9773.1—1999
Measurement time, ambient atmospheric conditions (atmospheric pressure, intake air temperature and humidity), engine speed, dynamometer reading, fuel consumption, outlet water temperature, oil dynamometer and salinity, exhaust temperature, turbocharger speed of supercharged turbocharger, gas temperature before turbine and humidity change of cooling medium in intercooler, etc. These engine parameters shall be measured under the condition of less than 60m in the test cycle, and the maximum value shall be 1. If the test is longer than 60 minutes, the test shall be carried out once every hour. 4.2 According to 8.2, the test time, ambient atmospheric conditions (fire pressure, reverse air temperature and humidity), number of cycles, engine speed in each working condition, dynamometer reading and oil consumption in the calibrated working condition, water outlet humidity and stabilization time shall be measured during the trial test. The upper control parameters shall be measured once every cycle. 8.5 Before and after the endurance test of the required parts, the engine shall be disassembled for inspection and accurate measurement of the dimensions of the following engine parts: cylinder block (or cylinder), live bolt, live bolt, piston ring, valve, valve guide and valve seat (sinking amount), connecting rod sleeve, connecting shaft, main bearing, connecting shaft (main journal and rod journal), camshaft (cam journal), wheel axle ratio or bushing. The measurements during the test will be determined by the test unit as needed. 9 Test report
After the test is completed, the test unit shall compile a test report based on the test results. The main contents include the following items: 9.1 Model, factory number, technical specifications, name, model and specification of the diesel engine and its manufacturer. 9.2 Name, model, specification, accuracy grade and manufacturer of the inspection equipment, instruments and meters. 3 Various performance tests, such as starting performance, cylinder uniformity, mechanical efficiency, adjustment characteristics, load characteristics or speed characteristics or propulsion characteristics, air cut characteristics, noise, exhaust smoke and engine sleeve consumption. %4 Measurement data of the dimensions of the main parts (see 5) before and after the durability test (see Figure 1 for the measurement position of the accessories), and the overhaul period of the diesel engine is calculated based on the largest wear of the cylinder liner, crankshaft main journal and connecting journal, earth bearing and connecting rod bearing. 9.5 Maintenance during the durability test (including the amount of oil replaced each time), the name, number, occurrence time and frequency of parking failures and replacement of parts and accessories (with photos of damaged parts and cause analysis) 9.6 Change curves of the following seven main parameters at the calibrated operating condition or 110% calibrated power operating condition (see 8.1 specification) during the durability test:
diesel engine speed, head rate, torque, fuel consumption rate, atmospheric pressure, reverse gas temperature, water outlet temperature, engine pool temperature, exhaust temperature, diesel engine speed, full turbine gas temperature, intercooler cooling medium inlet temperature, etc. 10 Evaluation of test results
101 After the reliability and durability tests, at the rated power, the fuel consumption rate shall not be greater than 102% of the rated value, the oil consumption rate shall not be greater than 125% of the rated value, the intake temperature shall not be higher than 110% of the rated value, and other performance indicators shall comply with the provisions of the design task book or technical documents.
10.2 During the test period, the following major parts of the diesel engine shall not be replaced: a) Parts
Engine body, cylinder liner, cylinder head gasket, cylinder head (including combustion key block) and its studs: piston, piston pin, piston ring, connecting rod, connecting rod bushing, selector bearing and connecting rod bolt; JB/T73.1—1999
Crankshaft and its connecting screw, main bearing or main bearing, bearing and flywheel and its bolt gear, camshaft and its bearing, rocker arm and thumb shaft; valve, valve seat, valve pipe, gas spring, valve tappet and valve push rod. b) Parts: oil pump, spray, mixer, injector, air filter: diesel engine and water pump, water tank, condenser, heat exchanger and fan; oil pump, oil cooler and oil primary and fine filter: supercharger and intercooler of supercharged diesel engine; safety devices (starting protection, high temperature and low oil protection of engine oil, etc.). 10.3 During the test period, the number of shutdowns for repairs due to non-major parts shall not exceed 4 times, and the number of replacement parts shall not exceed 5 times. Note: The number of shutdowns for repairs and operating time due to shutdowns, power outages and other external factors shall not be counted, but records shall be kept. Except for velvet core and rubber seal.
Operation conditions
JB/T 9773.I—1999
Appendix A
(Appendix to the standard)
Method for determining oil consumption
The diesel engine with rated power of 12l power and holding power is the rated condition: the diesel engine with rated power of 1h power and 15min power is 90% and 85% of the rated power respectively. A2 Determination method
The diesel engine is preheated and operated until the oil humidity reaches the value specified in the instruction manual or 85℃±5%, then stopped, the crankshaft is rotated 3 times, so that the piston of the first cylinder is at the top dead center, and then the oil is drained until the oil is cut off. Then add new oil to the middle position of the dipstick and record the amount of oil added. The above-mentioned operating conditions are continuously operated for 12 seconds. After stopping, when the above-mentioned phase oil temperature is reached, the oil is drained in the same order and its reset is measured. The total consumption is calculated by the difference in weight of the oil added and removed. White benzene water
Hot water frost
Heating also
Water purification
JB/T9773.3—1999
Appendix date
(Reminder of the appendix)
Potential impact test load indicator
Water outlet
Water inlet
Retract writing meter
Frequency treatment machine
When the heat is gradually damaged: valves 1, 3, and Lu are open: valves 2 and 4 are closed. When the shifter ring is: 2, 4 are open: valves 1, 3, and 8 are closed. Valves 5 and 6 are used to adjust the water temperature.
Figure B1 Commercial door switch situation
From Shenwu Water Le
Control force photo4 If the following conditions are found during the test, the machine should be stopped immediately and the test can be carried out again after adjustment and elimination: a) The engine power drops or the oil consumption rate increases to 5% of the calibration value, or the exhaust temperature rises to 10% of the calibration value; b) The engine fails to meet the specifications and may cause the machine to break down or endanger personal safety. 4
&4 Excessive data
8.4.1 When testing according to 8.1, the following should be measured: JB/T9773.1—1999
Measurement time, ambient atmospheric conditions (atmospheric pressure, intake air temperature and humidity), engine speed, dynamometer reading, fuel consumption, outlet water temperature, oil dynamometer and salinity, exhaust temperature, turbocharger speed of turbocharged engine, gas temperature before turbine and intercooler cooling medium selection humidity change, etc. These engine parameters shall be measured once for every 60 min of operation in the test cycle, and once every 1 h for every 60 min of operation. 4.2 According to 8.2, the test time, ambient atmospheric conditions (fire pressure, reverse air temperature and humidity), number of cycles, engine speed for each operating condition, dynamometer reading and fuel consumption at the calibrated operating condition, water outlet humidity and stabilization time shall be measured during the trial test. The upper control parameters shall be measured once per cycle. 8.5 Before and after the endurance test of the engine, the following engine parts shall be disassembled for inspection and accurate measurement: cylinder block (or cylinder), piston, piston pin, piston ring, valve, valve guide and valve seat (sinking amount), connecting rod sleeve, connecting shaft, main bearing, connecting shaft (main journal and rod journal), camshaft ( camshaft journal), axle ratio or bushing. The measurements during the test will be determined by the test unit according to the needs. 9 Test report
After the test is completed, the test unit shall compile a test report based on the test results. The main contents include the following items: 9.1 Model, factory number, technical specifications, name, model and specification of the diesel engine and its manufacturing plant. 9:2 Name, type, specification, accuracy grade and manufacturer of the inspection equipment, instruments and meters. ,3 Various performance tests, such as starting performance, cylinder uniformity, mechanical efficiency, adjustment characteristics, load characteristics or speed characteristics or propulsion characteristics, air cut characteristics, noise, exhaust smoke and engine sleeve consumption. %4 Measurement data of the dimensions of the main parts (see 5) before and after the endurance test (attached measurement position Figure 1, and according to the cylinder liner, crankshaft main shaft The largest wear of the journal and connecting rod journal, bearing shell and connecting rod bearing shell is used to calculate the overhaul period of the diesel engine. 9.5 Maintenance during the operability and durability tests (including the amount of oil changed each time), shutdown failures and replacement of parts and accessories, the name, number of pieces, the statistical table of occurrence time and frequency (with photos of damaged parts and cause analysis) 9.6 During the operability and durability tests, the change curves of the following seven major parameters at the calibrated operating conditions or 110% calibrated power operating conditions (continued from 8.1 specification):
diesel engine speed, engine speed, torque, fuel consumption rate, atmospheric pressure, reverse gas temperature, water outlet temperature, sump temperature, exhaust temperature, diesel engine speed, gas temperature before full turbine, intercooler cooling medium inlet temperature, etc. 10 Evaluation of test results
101 After the operability and durability tests, at the standard operating conditions or 110% calibrated power conditions (continued from 8.1 specification) At rated power, the fuel consumption rate is not more than 102% of the calibrated value, the oil consumption rate is not more than 125% of the calibrated value, the intake temperature is not higher than 110% of the calibrated value, and other performance indicators shall comply with the provisions of the design task book or technical documents.
10.2 During the test, the following major parts of the diesel engine shall not be replaced: a) Parts
Engine body, cylinder liner, cylinder head gasket, cylinder head (including combustion key block) and its studs: piston, piston pin, piston ring, connecting rod, connecting rod bushing, selector bearing and connecting rod bolt; JB/T73.1—1999
Crankshaft and its connecting screw, main bearing or main bearing, bearing and flywheel and its bolt gear, camshaft and its bearing, rocker arm and thumb shaft; valve, valve seat, valve pipe, gas spring, valve tappet and valve push rod. b) Parts: oil pump, spray, mixer, injector, air filter: diesel engine: water pump, water tank, condenser, heat exchanger and fan; oil pump, oil cooler and oil primary and fine filter: supercharger and intercooler of supercharged diesel engine; safety devices (starting protection, high temperature and low oil protection of engine oil, etc.). 10.3 During the test period, the number of shutdowns for repairs due to non-major parts failure shall not exceed 4 times, and the number of replacement parts shall not exceed 5 times. Note: The number of shutdowns for repairs and operating time due to shutdowns, power outages and other external factors shall not be counted, but records shall be kept. Except for velvet core and rubber seal.
Operation conditions
JB/T 9773.I—1999
Appendix A
(Appendix to the standard)
Method for determining oil consumption
The diesel engine with rated power of 12l power and holding power is the rated condition: the diesel engine with rated power of 1h power and 15min power is 90% and 85% of the rated power respectively. A2 Determination method
The diesel engine is preheated and operated until the oil humidity reaches the value specified in the instruction manual or 85℃±5%, then stopped, the crankshaft is rotated 3 times, so that the piston of the first cylinder is at the top dead center, and then the oil is drained until the oil is cut off. Then add new oil to the middle position of the dipstick and record the amount of oil added. The above-mentioned operating conditions are continuously operated for 12 seconds. After stopping, when the above-mentioned phase oil temperature is reached, the oil is drained in the same order and its reset is measured. The total consumption is calculated by the difference in weight of the oil added and removed. White benzene water
Hot water frost
Heating also
Water purification
JB/T9773.3—1999
Appendix date
(Reminder of the appendix)
Potential impact test load indicator
Water outlet
Water inlet
Retract writing meter
Frequency treatment machine
When the heat gradually breaks down: valves 1, 3, and Lu open: valves 2 and 4 are closed. When the shifter ring: 2, 4 open: valves 1, 3, and 8 are closed. Valves 5 and 6 are used to adjust the water temperature.
Figure B1 Commercial door switch situation
From Shenwu Water Le
Control force photo4 If the following conditions are found during the test, the machine should be stopped immediately and the test can be carried out again after adjustment and elimination: a) The engine power drops or the oil consumption rate increases to 5% of the calibration value, or the exhaust temperature rises to 10% of the calibration value; b) The engine fails to meet the specifications and may cause the machine to break down or endanger personal safety. 4
&4 Excessive databzxz.net
8.4.1 When testing according to 8.1, the following should be measured: JB/T9773.1—1999
Measurement time, ambient atmospheric conditions (atmospheric pressure, intake air temperature and humidity), engine speed, dynamometer reading, fuel consumption, outlet water temperature, oil dynamometer and salinity, exhaust temperature, turbocharger speed of turbocharged engine, gas temperature before turbine and intercooler cooling medium selection humidity change, etc. These engine parameters shall be measured once for every 60 min of operation in the test cycle, and once every 1 h for every 60 min of operation. 4.2 According to 8.2, the test time, ambient atmospheric conditions (fire pressure, reverse air temperature and humidity), number of cycles, engine speed for each operating condition, dynamometer reading and fuel consumption at the calibrated operating condition, water outlet humidity and stabilization time shall be measured during the trial test. The upper control parameters shall be measured once per cycle. 8.5 Before and after the endurance test of the engine, the following engine parts shall be disassembled for inspection and accurate measurement: cylinder block (or cylinder), piston, piston pin, piston ring, valve, valve guide and valve seat (sinking amount), connecting rod sleeve, connecting shaft, main bearing, connecting shaft (main journal and rod journal), camshaft ( camshaft journal), axle ratio or bushing. The measurements during the test will be determined by the test unit according to the needs. 9 Test report
After the test is completed, the test unit shall compile a test report based on the test results. The main contents include the following items: 9.1 Model, factory number, technical specifications, name, model and specification of the diesel engine and its manufacturing plant. 9:2 Name, type, specification, accuracy grade and manufacturer of the inspection equipment, instruments and meters. ,3 Various performance tests, such as starting performance, cylinder uniformity, mechanical efficiency, adjustment characteristics, load characteristics or speed characteristics or propulsion characteristics, air cut characteristics, noise, exhaust smoke and engine sleeve consumption. %4 Measurement data of the dimensions of the main parts (see 5) before and after the endurance test (attached measurement position Figure 1, and according to the cylinder liner, crankshaft main shaft The largest wear of the journal and connecting rod journal, bearing shell and connecting rod bearing shell is used to calculate the overhaul period of the diesel engine. 9.5 Maintenance during the operability and durability tests (including the amount of oil changed each time), shutdown failures and replacement of parts and accessories, the name, number of pieces, the statistical table of occurrence time and frequency (with photos of damaged parts and cause analysis) 9.6 During the operability and durability tests, the change curves of the following seven major parameters at the calibrated operating conditions or 110% calibrated power operating conditions (continued from 8.1 specification):
diesel engine speed, engine speed, torque, fuel consumption rate, atmospheric pressure, reverse gas temperature, water outlet temperature, sump temperature, exhaust temperature, diesel engine speed, gas temperature before full turbine, intercooler cooling medium inlet temperature, etc. 10 Evaluation of test results
101 After the operability and durability tests, at the standard operating conditions or 110% calibrated power conditions (continued from 8.1 specification) At rated power, the fuel consumption rate is not more than 102% of the calibrated value, the oil consumption rate is not more than 125% of the calibrated value, the intake temperature is not higher than 110% of the calibrated value, and other performance indicators shall comply with the provisions of the design task book or technical documents.
10.2 During the test, the following major parts of the diesel engine shall not be replaced: a) Parts
Engine body, cylinder liner, cylinder head gasket, cylinder head (including combustion key block) and its studs: piston, piston pin, piston ring, connecting rod, connecting rod bushing, selector bearing and connecting rod bolt; JB/T73.1—1999
Crankshaft and its connecting screw, main bearing or main bearing, bearing and flywheel and its bolt gear, camshaft and its bearing, rocker arm and thumb shaft; valve, valve seat, valve pipe, gas spring, valve tappet and valve push rod. b) Parts: oil pump, spray, mixer, injector, air filter: diesel engine: water pump, water tank, condenser, heat exchanger and fan; oil pump, oil cooler and oil primary and fine filter: supercharger and intercooler of supercharged diesel engine; safety devices (starting protection, high temperature and low oil protection of engine oil, etc.). 10.3 During the test period, the number of shutdowns for repairs due to non-major parts failure shall not exceed 4 times, and the number of replacement parts shall not exceed 5 times. Note: The number of shutdowns for repairs and operating time due to shutdowns, power outages and other external factors shall not be counted, but records shall be kept. Except for velvet core and rubber seal.
Operation conditions
JB/T 9773.I—1999
Appendix A
(Appendix to the standard)
Method for determining oil consumption
The diesel engine with rated power of 12l power and holding power is the rated condition: the diesel engine with rated power of 1h power and 15min power is 90% and 85% of the rated power respectively. A2 Determination method
The diesel engine is preheated and operated until the oil humidity reaches the value specified in the instruction manual or 85℃±5%, then stopped, the crankshaft is rotated 3 times, so that the piston of the first cylinder is at the top dead center, and then the oil is drained until the oil is cut off. Then add new oil to the middle position of the dipstick and record the amount of oil added. The above-mentioned operating conditions are continuously operated for 12 seconds. After stopping, when the above-mentioned phase oil temperature is reached, the oil is drained in the same order and its reset is measured. The total consumption is calculated by the difference in weight of the oil added and removed. White benzene water
Hot water frost
Heating also
Water purification
JB/T9773.3—1999
Appendix date
(Reminder of the appendix)
Potential impact test load indicator
Water outlet
Water inlet
Retract writing meter
Frequency treatment machine
When the heat gradually breaks down: valves 1, 3, and Lu open: valves 2 and 4 are closed. When the shifter ring: 2, 4 open: valves 1, 3, and 8 are closed. Valves 5 and 6 are used to adjust the water temperature.
Figure B1 Commercial door switch situation
From Shenwu Water Le
Control force photo1 Standard) The following seven major seasonal changes:
Diesel engine speed, head rate, torque, fuel consumption rate, atmospheric pressure, reverse gas temperature, water outlet temperature, engine pool temperature, exhaust temperature, diesel engine speed, gas temperature before full turbine, intercooler cooling medium inlet temperature, etc. 10 Evaluation of test results
101 After the reliability and durability test, at the rated power, the fuel consumption rate shall not be greater than 102% of the rated value, the oil consumption rate shall not be greater than 125% of the rated value, and the exhaust temperature shall not be higher than 110% of the rated value. Other performance indicators shall comply with the provisions of the design task book or technical documents.
10.2 During the test, the following main parts of the diesel engine shall not be replaced: a) Parts
| Engine body, cylinder liner, cylinder head gasket, cylinder head (including combustion key block) and its studs: piston, piston pin, piston ring, connecting rod, connecting rod bushing, selector bearing and connecting rod bolt; JB/T73.1-1999
crankshaft and its connecting screw, main bearing or main bearing, bearing and flywheel and its bolt gear, camshaft and its bearing, rocker arm and thumb shaft; valve, valve seat, valve pipe, gas spring, valve tappet and valve push rod. b) Parts
oil pump, spray, mixer, injector, air filter: and diesel filter: water pump, water tank, condenser, heat exchanger and fan,
oil pump, oil cooler and oil coarse and fine filter: supercharger and intercooler of supercharged diesel engine; safety device (starting protection, high temperature and low oil protection of engine oil, etc.). 10.3 During the test period, the number of downtimes for repairs due to failure of non-main parts shall not exceed 4 times, and the number of replacement parts shall not exceed 5 times. Note: The number of downtimes for repairs and the operating time due to failure of other external factors such as power outages shall not be counted, but the monitoring shall be recorded. Except for the velvet core and rubber seal.
Operation conditions
JB/T 9773.I—1999
Appendix A
(Standard Appendix)
Method for determining oil consumption
The diesel engine with rated power of 12l power and sustained power is the rated working condition: the diesel engine with rated power of 1h power and 15min power is 90% and 85% of the rated power respectively. A2 Determination method
Preheat the diesel engine until the oil humidity reaches the value specified in the instruction manual or 85℃±5%, then stop the engine, turn the crankshaft 3 times to make the piston of the first cylinder at the top dead center, and then drain the oil until the oil is cut off. Add new oil to the middle position of the dipstick and record the added oil. Run continuously for 12 hours under the above operating conditions, and drain the oil in the same order after stopping when the above phase oil temperature is reached, and measure the reset value. Calculate the total consumption by the difference in weight of the added and drained oil. White benzene water
Hot water frost
Heating also
Water purification
JB/T9773.3—1999
Appendix date
(Reminder of the appendix)
Potential impact test load indicator
Water outlet
Water inlet
Retract writing meter
Frequency treatment machine
When the heat gradually breaks down: valves 1, 3, and Lu open: valves 2 and 4 are closed. When the shifter ring: 2, 4 open: valves 1, 3, and 8 are closed. Valves 5 and 6 are used to adjust the water temperature.
Figure B1 Commercial door switch situation
From Shenwu Water Le
Control force photo1 Standard) The following seven major seasonal changes:
Diesel engine speed, head rate, torque, fuel consumption rate, atmospheric pressure, reverse gas temperature, water outlet temperature, engine pool temperature, exhaust temperature, diesel engine speed, gas temperature before full turbine, intercooler cooling medium inlet temperature, etc. 10 Evaluation of test results
101 After the reliability and durability test, at the rated power, the fuel consumption rate shall not be greater than 102% of the rated value, the oil consumption rate shall not be greater than 125% of the rated value, and the exhaust temperature shall not be higher than 110% of the rated value. Other performance indicators shall comply with the provisions of the design task book or technical documents.
10.2 During the test, the following main parts of the diesel engine shall not be replaced: a) Parts
| Engine body, cylinder liner, cylinder head gasket, cylinder head (including combustion key block) and its studs: piston, piston pin, piston ring, connecting rod, connecting rod bushing, selector bearing and connecting rod bolt; JB/T73.1-1999
crankshaft and its connecting screw, main bearing or main bearing, bearing and flywheel and its bolt gear, camshaft and its bearing, rocker arm and thumb shaft; valve, valve seat, valve pipe, gas spring, valve tappet and valve push rod. b) Parts
oil pump, spray, mixer, injector, air filter: and diesel filter: water pump, water tank, condenser, heat exchanger and fan,
oil pump, oil cooler and oil coarse and fine filter: supercharger and intercooler of supercharged diesel engine; safety device (starting protection, high temperature and low oil protection of engine oil, etc.). 10.3 During the test period, the number of downtimes for repairs due to failure of non-main parts shall not exceed 4 times, and the number of replacement parts shall not exceed 5 times. Note: The number of downtimes for repairs and the operating time due to failure of other external factors such as power outages shall not be counted, but the monitoring shall be recorded. Except for the velvet core and rubber seal.
Operation conditions
JB/T 9773.I—1999
Appendix A
(Standard Appendix)
Method for determining oil consumption
The diesel engine with rated power of 12l power and sustained power is the rated working condition: the diesel engine with rated power of 1h power and 15min power is 90% and 85% of the rated power respectively. A2 Determination method
Preheat the diesel engine until the oil humidity reaches the value specified in the instruction manual or 85℃±5%, then stop the engine, turn the crankshaft 3 times to make the piston of the first cylinder at the top dead center, and then drain the oil until the oil is cut off. Add new oil to the middle position of the dipstick and record the added oil. Run continuously for 12 hours under the above operating conditions, and drain the oil in the same order after stopping when the above phase oil temperature is reached, and measure the reset value. Calculate the total consumption by the difference in weight of the added and drained oil. White benzene water
Hot water frost
Heating also
Water purification
JB/T9773.3—1999
Appendix date
(Reminder of the appendix)
Potential impact test load indicator
Water outlet
Water inlet
Retract writing meter
Frequency treatment machine
When the heat gradually breaks down: valves 1, 3, and Lu open: valves 2 and 4 are closed. When the shifter ring: 2, 4 open: valves 1, 3, and 8 are closed. Valves 5 and 6 are used to adjust the water temperature.
Figure B1 Commercial door switch situation
From Shenwu Water Le
Control force photo
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