CN101975664A - Motorcycle idle speed emission equivalent measurement method - Google Patents
Motorcycle idle speed emission equivalent measurement method Download PDFInfo
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- CN101975664A CN101975664A CN 201010293927 CN201010293927A CN101975664A CN 101975664 A CN101975664 A CN 101975664A CN 201010293927 CN201010293927 CN 201010293927 CN 201010293927 A CN201010293927 A CN 201010293927A CN 101975664 A CN101975664 A CN 101975664A
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- 238000000691 measurement method Methods 0.000 title claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 20
- 239000004215 Carbon black (E152) Substances 0.000 claims description 18
- 229930195733 hydrocarbon Natural products 0.000 claims description 18
- 150000002430 hydrocarbons Chemical class 0.000 claims description 18
- 238000012802 pre-warming Methods 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 238000005461 lubrication Methods 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 7
- 230000004087 circulation Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000003584 silencer Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- 239000003921 oil Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000012795 verification Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a motorcycle idle speed emission equivalent measurement method, which comprises the following steps of: 1) selecting a motorcycle which meets the emission standard; 2) preheating the motorcycle according to GB14621-2002; 3) measuring a standard temperature field; 4) selecting a motorcycle to be measured; 5) rapidly preheating; 6) preheating at an idle speed; 7) regulating the idling speed; 8) measuring a temperature field of the motorcycle to be measured, and if the temperature field is inconsistent with the standard temperature field, continuing a step 9), and if the temperature field is consistent with the standard temperature field, turning to a step 11); 9) completely cooling the motorcycle to be measured; 10) returning to the step 5, and regulating the running speed v; 11) performing idle speed measurement according to GB14621-2002; 12) digitally rounding; 13) recording an idle speed emission measurement result; and 14) returning to the step 4, and performing emission measurement on the next motorcycle. The motorcycle idle speed emission equivalent measurement method can rapidly measure the motorcycle and also can guarantee the accuracy of the measured result.
Description
Technical field
The present invention relates to the measuring method of motorcycle idle exhaust emission, relate in particular to a kind of motorcycle idle exhaust emission equivalent measurement method.
Background technology
In order to protect environment, between dispatching from the factory, must measure by motorcycle, just have only the motorcycle of allow compliance with emission standards to put on market to its exhaust contaminant.GB14621-2002 is the national standard about " motorcycle and trail bike tailpipe emission limit value and measuring method (idling method) ", this national Specification under idling operation the sameization carbon (CO) in motorcycle and the trail bike exhaust, the measuring method of hydrocarbon (HC):
1), start vehicle, carry out the vehicle preheating by one of following condition:
1a) motorcycle moves 10km with speed of a motor vehicle 50km/h, trail bike with speed of a motor vehicle 40km/h;
1b) motorcycle is pressed GB 14622 regulation operating modes, trail bike is pressed GB 18176 regulation operating modes and move four circulations on chassis dynamometer;
1c) motorcycle travelled 15 minutes under normal road traffic condition at least;
2), finishing following idling after the vehicle preheating in 10 minutes measures:
2a) add a long 600mm at the exhaust silencer afterbody, the special use sealing of internal diameter φ 40mm is taken over;
2b) keep idling operation, sampling probe is inserted take over, guarantee that insertion depth is 400mm, HC when reading probe insertion back 30s simultaneously and the indicated value of CO are as measured value;
2c) interval 1min, repeating step 2b;
2d) measurement result is got twice arithmetic mean; If during a plurality of gas outlet, get the arithmetic mean of each gas outlet measurement result;
3), the digital revision of the convention: the carbon monoxide behind the revision of the convention (CO) discharge value keeps two decimals; Hydrocarbon (HC) remains into tens;
4), record idle exhaust emission measurement result.
Measuring method in the above GB14621-2002 standard has accuracy and authority, be applicable to that the batch motorcycle to the same model of manufacturing enterprise carries out random inspection, according to sampling Detection to the batch motorcycle, thereby the idle exhaust emission of the motorcycle of same model is by the gross assessed, whether met national standard with the discharging of the motorcycle of determining this model.By the GB14621-2002 standard-required vehicle is carried out the idle exhaust emission test, the required time of preheating generally is not less than 720s before detecting, because preheating time is longer, causes the required time of whole testing process oversize.
The batch motorcycle of the same model before manufacturing enterprise not only should make and dispatch from the factory meets the sampling Detection of national standard, also should carry out discharge measuring to each motorcycle on the production line voluntarily, makes the equal allow compliance with emission standards of each motorcycle of same model.If the measuring method that adopts the GB14621-2002 national standard in enterprises detects at each motorcycle of same model, because preheating time is longer, that will expend considerable time, be unfavorable for enhancing productivity.What also do not have a kind of practicality at present can all measure, can make again its measurement result and the corresponding to motorcycle idle exhaust emission of the measurement result measuring method of using national standard fast to each motorcycle of same model.
Summary of the invention
The technical matters that the present invention solves is: a kind of motorcycle idle exhaust emission equivalent measurement method is provided, this method can reduce preheating time, each motorcycle to same model is all measured fast, can make its measurement result consistent with the result who uses national standard to measure again.
Technical scheme of the present invention is: a kind of motorcycle idle exhaust emission equivalent measurement method comprises following measuring process:
1), selects a motorcycle that meets discharging standards of model to be measured;
2), start motorcycle, carry out the vehicle preheating by one of following condition:
2a) motorcycle is with speed of a motor vehicle 50km/h operation 10km;
2b) motorcycle is pressed GB 14622 regulation operating modes and move four circulations on chassis dynamometer;
2c) motorcycle travelled 15 minutes under normal road traffic condition at least;
3), measure engine lubrication oil temperature, the engine spark plug temperature of motorcycle, with this as the standard temperature field;
4), select a motorcycle to be measured;
5), move motorcycle to be measured, with motorcycle rapidly pre-warming to be measured, its travelling speed is v:60km/h≤v≤80km/h, the rapidly pre-warming time is t1:120s≤t1≤180s;
6), motorcycle to be measured is transformed into idling mode, carry out the idling preheating, idling preheating time is t2:60s≤t2≤120s;
7), adjust idling speed: idling speed is controlled at 1500 ± 100r/min;
8), the temperature field of measuring motorcycle to be measured, promptly the engine lubrication oil temperature of motorcycle to be measured, engine spark plug temperature if the temperature of the temperature field of motorcycle to be measured and standard temperature field is inconsistent, then continue step 9; If the temperature field of motorcycle to be measured is consistent with the temperature of standard temperature field, then jump to step 11;
9), motorcycle to be measured is cooled off fully;
10), turn back to step 5, and adjust the travelling speed v of motorcycle to be measured;
11), finishing following idling after the motorcycle preheating to be measured in 10 minutes measures:
11a) add a long 600mm at the exhaust silencer afterbody, the special use sealing of internal diameter φ 40mm is taken over;
11b) keep idling operation, sampling probe is inserted take over, guarantee that insertion depth is 400mm, HC when reading probe insertion back 30s simultaneously and the indicated value of CO are as measured value;
11c) interval 1min, repeating step 11b;
11d) measurement result is got twice arithmetic mean; If during a plurality of gas outlet, get the arithmetic mean of each gas outlet measurement result;
12), the digital revision of the convention: the carbon monoxide emission value behind the revision of the convention keeps two decimals; Hydrocarbon remains into tens;
13), record idle exhaust emission measurement result;
14), turn back to step 4, the motorcycle of next same model is carried out discharge measuring.
Further, the motorcycle travelling speed v=70km/h of step 5, rapidly pre-warming time t1=120s; Motorcycle idling t2=90s preheating time of step 6.
Further, in the step 10, be ± 5km/h to each setting range of travelling speed v.
The invention has the beneficial effects as follows: carry out all needing each motorcycle is carried out preheating before motorcycle emission detects, adopt the measuring method of existing GB14621-2002, all be not less than 720s the preheating time of each motorcycle; When the batch motorcycle that the present invention is directed to same model carries out discharge measuring:
The temperature field at first settles the standard: select a motorcycle that meets discharging standards, and carry out preheating according to the GB14621-2002 method, measure engine lubrication oil temperature, the engine spark plug temperature of this motorcycle, with these two temperature as the standard temperature field;
Detect the temperature field of motorcycle to be measured then: move motorcycle to be measured, with motorcycle rapidly pre-warming to be measured, its travelling speed is v:60km/h≤v≤80km/h, and the rapidly pre-warming time is t1:120s≤t1≤180s; Motorcycle to be measured is transformed into idling mode, carries out the idling preheating, idling preheating time is t2:60s≤t2≤120s; Adjust idling speed:, make idling speed low as far as possible guaranteeing that engine does not produce under the situation of shake; Measure the temperature field of motorcycle to be measured, i.e. the engine lubrication oil temperature of motorcycle to be measured, engine spark plug temperature;
Whether the temperature field and the standard temperature field that next contrast motorcycle to be measured meet: if the temperature of the temperature field of motorcycle to be measured and standard temperature field is inconsistent, the travelling speed v that then motorcycle to be measured is cooled off fully and adjust motorcycle to be measured remeasures its temperature field, and is consistent with the standard temperature field up to the temperature field of motorcycle to be measured; After the temperature of the temperature field of motorcycle to be measured and standard temperature field is consistent, then begin to carry out the carbon monoxide to motorcycle to be measured, the measurement of hydrocarbon.
After same motorcycle adopts method of the present invention and GB14621-2002 standard pre-heating mean respectively, when temperature field (lubricating oil temperature, spark plug temperature) is consistent, its idle exhaust emission measured value also consistent (the CO error is no more than 2%, HC error be no more than 2.5%), thereby, verified that the temperature field is the principal element that influences the motorcycle idle exhaust emission.When adopting the present invention to the discharge measuring of the batch motorcycle of same model, only need at first a motorcycle that meets discharging standards to be carried out the preheating of 720s according to GB14621-2002, and be lower than 300s the preheating time of the motorcycle to be measured of other same model, therefore this method can reduce preheating time, productive temp is all measured, satisfied to each motorcycle to same model fast, consistent, the assurance precision of test result of the result that its measurement result and use national standard are measured.
In order to verify when when temperature field (lubricating oil temperature, spark plug temperature) is consistent, after same motorcycle adopts method of the present invention and GB14621-2002 standard pre-heating mean respectively, its idle exhaust emission measured value also consistent (the CO error is no more than 2%, HC error be no more than 2.5%), we have randomly drawed two motorcycles and have carried out following demonstration test: the motorcycle operating speed keeps 70km/h, the motorcycle temperature field is reached fast adopt the requirement of the standard temperature field of GB14621-2002 measurement, the test idle exhaust emission, shown in table 1, table 2:
The graph of a relation of table 1 1# motorcycle preheating time and preheat temperature
The graph of a relation of table 2 2# motorcycle preheating time and preheat temperature
Learn by above-mentioned chart, after two motorcycles adopt preheating and GB14621-2002 standard pre-heating mean in the inventive method respectively, when temperature field (lubricating oil temperature, spark plug temperature) is consistent, its idle exhaust emission measured value also consistent (the CO error is no more than 2%, HC error be no more than 2.5%), thereby, verification experimental verification the temperature field be the principal element that influences the motorcycle idle exhaust emission.Comprehensive above-mentioned data analysis can draw: the variation in motorcycle temperature field has direct influence to the test result of idle exhaust emission; When the temperature field reaches unanimity (lubricating oil temperature differs ± and 2 ℃; Spark plug temperature differs ± and 5 ℃) the idle exhaust emission value value of tending towards stability of being tested; As long as the temperature field (lubricating oil temperature, spark plug temperature) of tested motorcycle is consistent with standard temperature field (lubricating oil temperature, spark plug temperature), can guarantee test result accuracy and credibility, verification experimental verification the temperature field be the principal element that influences the motorcycle idle exhaust emission.
Description of drawings
Fig. 1 is a FB(flow block) of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
Embodiment one
Referring to Fig. 1, a kind of motorcycle idle exhaust emission equivalent measurement method comprises following measuring process:
1), selects a motorcycle that meets discharging standards of model to be measured;
2), start motorcycle, carry out the vehicle preheating by one of following condition:
2a) motorcycle is with speed of a motor vehicle 50km/h operation 10km;
2b) motorcycle is pressed GB 14622 regulation operating modes and move four circulations on chassis dynamometer;
2c) motorcycle travelled 15 minutes under normal road traffic condition at least;
3), measure engine lubrication oil temperature, the engine spark plug temperature of motorcycle, with this as the standard temperature field;
4), select a motorcycle to be measured;
5), move motorcycle to be measured, with motorcycle rapidly pre-warming to be measured, its travelling speed is v=70km/h, the rapidly pre-warming time is t1=120s;
6), motorcycle to be measured is transformed into idling mode, carry out the idling preheating, idling preheating time is t2=90s;
7), adjust idling speed: idling speed is controlled at 1500 ± 100r/min;
8), the temperature field of measuring motorcycle to be measured, promptly the engine lubrication oil temperature of motorcycle to be measured, engine spark plug temperature if the temperature of the temperature field of motorcycle to be measured and standard temperature field is inconsistent, then continue step 9; If the temperature field of motorcycle to be measured is consistent with the temperature of standard temperature field, then jump to step 11;
9), motorcycle to be measured is cooled off fully;
10), turn back to step 5, and adjust the travelling speed v of motorcycle to be measured, if the temperature field of tested motorcycle is lower than the standard temperature field, the travelling speed v of motorcycle to be measured by at every turn+5km/h adjusts; If the temperature field of tested motorcycle is higher than the standard temperature field, the travelling speed v of motorcycle to be measured by at every turn-5km/h adjusts, and is consistent with the standard temperature field up to the temperature field of tested motorcycle;
11), finishing following idling after the motorcycle preheating to be measured in 10 minutes measures:
11a) add a long 600mm at the exhaust silencer afterbody, the special use sealing of internal diameter φ 40mm is taken over;
11b) keep idling operation, sampling probe is inserted take over, guarantee that insertion depth is 400mm, HC when reading probe insertion back 30s simultaneously and the indicated value of CO are as measured value;
11c) interval 1min, repeating step 11b;
11d) measurement result is got twice arithmetic mean; If during a plurality of gas outlet, get the arithmetic mean of each gas outlet measurement result;
12), the digital revision of the convention: the carbon monoxide emission value behind the revision of the convention keeps two decimals; Hydrocarbon remains into tens;
13), record idle exhaust emission measurement result;
14), turn back to step 4, the motorcycle of next same model is carried out discharge measuring.
Embodiment two
Referring to Fig. 1, a kind of motorcycle idle exhaust emission equivalent measurement method comprises following measuring process:
1), selects a motorcycle that meets discharging standards of model to be measured;
2), start motorcycle, carry out the vehicle preheating by one of following condition:
2a) motorcycle is with speed of a motor vehicle 50km/h operation 10km;
2b) motorcycle is pressed GB 14622 regulation operating modes and move four circulations on chassis dynamometer;
2c) motorcycle travelled 15 minutes under normal road traffic condition at least;
3), measure engine lubrication oil temperature, the engine spark plug temperature of motorcycle, with this as the standard temperature field;
4), select a motorcycle to be measured;
5), move motorcycle to be measured, with motorcycle rapidly pre-warming to be measured, its travelling speed is v=60km/h, the rapidly pre-warming time is t1=150s;
6), motorcycle to be measured is transformed into idling mode, carry out the idling preheating, idling preheating time is t2=60s;
7), adjust idling speed: idling speed is controlled at 1500 ± 100r/min;
8), the temperature field of measuring motorcycle to be measured, promptly the engine lubrication oil temperature of motorcycle to be measured, engine spark plug temperature if the temperature of the temperature field of motorcycle to be measured and standard temperature field is inconsistent, then continue step 9; If the temperature field of motorcycle to be measured is consistent with the temperature of standard temperature field, then jump to step 11;
9), motorcycle to be measured is cooled off fully;
10), turn back to step 5, and adjust the travelling speed v of motorcycle to be measured, if the temperature field of tested motorcycle is lower than the standard temperature field, the travelling speed v of motorcycle to be measured by at every turn+5km/h adjusts; If the temperature field of tested motorcycle is higher than the standard temperature field, the travelling speed v of motorcycle to be measured by at every turn-5km/h adjusts, and is consistent with the standard temperature field up to the temperature field of tested motorcycle;
11), finishing following idling after the motorcycle preheating to be measured in 10 minutes measures:
11a) add a long 600mm at the exhaust silencer afterbody, the special use sealing of internal diameter φ 40mm is taken over;
11b) keep idling operation, sampling probe is inserted take over, guarantee that insertion depth is 400mm, HC when reading probe insertion back 30s simultaneously and the indicated value of CO are as measured value;
11c) interval 1min, repeating step 11b;
11d) measurement result is got twice arithmetic mean; If during a plurality of gas outlet, get the arithmetic mean of each gas outlet measurement result;
12), the digital revision of the convention: the carbon monoxide emission value behind the revision of the convention keeps two decimals; Hydrocarbon remains into tens;
13), record idle exhaust emission measurement result;
14), turn back to step 4, the motorcycle of next same model is carried out discharge measuring.
Embodiment three
Referring to Fig. 1, a kind of motorcycle idle exhaust emission equivalent measurement method comprises following measuring process:
1), selects a motorcycle that meets discharging standards of model to be measured;
2), start motorcycle, carry out the vehicle preheating by one of following condition:
2a) motorcycle is with speed of a motor vehicle 50km/h operation 10km;
2b) motorcycle is pressed GB 14622 regulation operating modes and move four circulations on chassis dynamometer;
2c) motorcycle travelled 15 minutes under normal road traffic condition at least;
3), measure engine lubrication oil temperature, the engine spark plug temperature of motorcycle, with this as the standard temperature field;
4), select a motorcycle to be measured;
5), move motorcycle to be measured, with motorcycle rapidly pre-warming to be measured, its travelling speed is v=80km/h, the rapidly pre-warming time is t1=180s;
6), motorcycle to be measured is transformed into idling mode, carry out the idling preheating, idling preheating time is t2=120s;
7), adjust idling speed:, make idling speed low as far as possible guaranteeing that engine does not produce under the situation of shake;
8), the temperature field of measuring motorcycle to be measured, promptly the engine lubrication oil temperature of motorcycle to be measured, engine spark plug temperature if the temperature of the temperature field of motorcycle to be measured and standard temperature field is inconsistent, then continue step 9; If the temperature field of motorcycle to be measured is consistent with the temperature of standard temperature field, then jump to step 11;
9), motorcycle to be measured is cooled off fully;
10), turn back to step 5, and adjust the travelling speed v of motorcycle to be measured, if the temperature field of tested motorcycle is lower than the standard temperature field, the travelling speed v of motorcycle to be measured by at every turn+5km/h adjusts; If the temperature field of tested motorcycle is higher than the standard temperature field, the travelling speed v of motorcycle to be measured by at every turn-5km/h adjusts, and is consistent with the standard temperature field up to the temperature field of tested motorcycle;
11), finishing following idling after the motorcycle preheating to be measured in 10 minutes measures:
11a) add a long 600mm at the exhaust silencer afterbody, the special use sealing of internal diameter φ 40mm is taken over;
11b) keep idling operation, sampling probe is inserted take over, guarantee that insertion depth is 400mm, HC when reading probe insertion back 30s simultaneously and the indicated value of CO are as measured value;
11c) interval 1min, repeating step 11b;
11d) measurement result is got twice arithmetic mean; If during a plurality of gas outlet, get the arithmetic mean of each gas outlet measurement result;
12), the digital revision of the convention: the carbon monoxide emission value behind the revision of the convention keeps two decimals; Hydrocarbon remains into tens;
13), record idle exhaust emission measurement result;
14), turn back to step 4, the motorcycle of next same model is carried out discharge measuring.
Claims (3)
1. a motorcycle idle exhaust emission equivalent measurement method is characterized in that, comprises following measuring process:
1), selects a motorcycle that meets discharging standards of model to be measured;
2), start motorcycle, carry out the vehicle preheating by one of following condition:
2a) motorcycle is with speed of a motor vehicle 50km/h operation 10km;
2b) motorcycle is pressed GB 14622 regulation operating modes and move four circulations on chassis dynamometer;
2c) motorcycle travelled 15 minutes under normal road traffic condition at least;
3), measure engine lubrication oil temperature, the engine spark plug temperature of motorcycle, with this as the standard temperature field;
4), select a motorcycle to be measured;
5), move motorcycle to be measured, with motorcycle rapidly pre-warming to be measured, its travelling speed is v:60km/h≤v≤80km/h, the rapidly pre-warming time is t1:120s≤t1≤180s;
6), motorcycle to be measured is transformed into idling mode, carry out the idling preheating, idling preheating time is t2:60s≤t2≤120s;
7), adjust idling speed: idling speed is controlled at 1500 ± 100r/min;
8), the temperature field of measuring motorcycle to be measured, promptly the engine lubrication oil temperature of motorcycle to be measured, engine spark plug temperature if the temperature of the temperature field of motorcycle to be measured and standard temperature field is inconsistent, then continue step 9; If the temperature field of motorcycle to be measured is consistent with the temperature of standard temperature field, then jump to step 11;
9), motorcycle to be measured is cooled off fully;
10), turn back to step 5, and adjust the travelling speed v of motorcycle to be measured;
11), finishing following idling after the motorcycle preheating to be measured in 10 minutes measures:
11a) add a long 600mm at the exhaust silencer afterbody, the special use sealing of internal diameter φ 40mm is taken over;
11b) keep idling operation, sampling probe is inserted take over, guarantee that insertion depth is 400mm, HC when reading probe insertion back 30s simultaneously and the indicated value of CO are as measured value;
11c) interval 1min, repeating step 11b;
11d) measurement result is got twice arithmetic mean; If during a plurality of gas outlet, get the arithmetic mean of each gas outlet measurement result;
12), the digital revision of the convention: the carbon monoxide emission value behind the revision of the convention keeps two decimals; Hydrocarbon remains into tens;
13), record idle exhaust emission measurement result;
14), turn back to step 4, the motorcycle of next same model is carried out discharge measuring.
2. according to the described motorcycle idle exhaust emission of claim 1 equivalent measurement method, it is characterized in that: the motorcycle travelling speed v=70km/h of step 5, rapidly pre-warming time t1=120s; Motorcycle idling t2=90s preheating time of step 6.
3. according to the described motorcycle idle exhaust emission of claim 1 equivalent measurement method, it is characterized in that: in the step 10, be ± 5km/h each setting range of travelling speed v.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692324A (en) * | 2012-06-27 | 2012-09-26 | 镇江跃进机械厂有限公司 | Motorbike idle speed discharging equivalent measurement method |
| CN103698132A (en) * | 2013-08-02 | 2014-04-02 | 道依茨一汽（大连）柴油机有限公司 | Diesel engine test method |
| CN112611575A (en) * | 2020-11-30 | 2021-04-06 | 山西华遇科技开发有限公司 | Equivalent measurement method for idle speed emission of snowfield motorcycle |
| CN114441192A (en) * | 2022-01-26 | 2022-05-06 | 重庆长安汽车股份有限公司 | Method for testing and evaluating heat accumulation and power attenuation of passenger vehicle at normal temperature |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692324A (en) * | 2012-06-27 | 2012-09-26 | 镇江跃进机械厂有限公司 | Motorbike idle speed discharging equivalent measurement method |
| CN103698132A (en) * | 2013-08-02 | 2014-04-02 | 道依茨一汽（大连）柴油机有限公司 | Diesel engine test method |
| CN103698132B (en) * | 2013-08-02 | 2016-08-17 | 道依茨一汽（大连）柴油机有限公司 | A kind of diesel engine test method |
| CN112611575A (en) * | 2020-11-30 | 2021-04-06 | 山西华遇科技开发有限公司 | Equivalent measurement method for idle speed emission of snowfield motorcycle |
| CN114441192A (en) * | 2022-01-26 | 2022-05-06 | 重庆长安汽车股份有限公司 | Method for testing and evaluating heat accumulation and power attenuation of passenger vehicle at normal temperature |
| CN114441192B (en) * | 2022-01-26 | 2023-07-04 | 重庆长安汽车股份有限公司 | Test and evaluation method for heat accumulation and power attenuation of passenger car at normal temperature |
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