CN102156029A - Defect detection method of motorcycle fuel evaporation system - Google Patents
Defect detection method of motorcycle fuel evaporation system Download PDFInfo
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- CN102156029A CN102156029A CN 201110001079 CN201110001079A CN102156029A CN 102156029 A CN102156029 A CN 102156029A CN 201110001079 CN201110001079 CN 201110001079 CN 201110001079 A CN201110001079 A CN 201110001079A CN 102156029 A CN102156029 A CN 102156029A
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- tipping valve
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Abstract
The invention relates to a defect detection method of a motorcycle fuel evaporation system, wherein the method can detect the majority of defects of a fuel evaporation system by means of separately detecting two members respectively, and detecting the real running conditions after the fuel evaporation system is installed and the like; after a failure is detected in the steps, if the failure can be repaired, the examination in the following steps can be continued after the failure is repaired; if the failure can not be repaired, the fuel evaporation system can not leave factory, therefore, the probability of early failure of the fuel evaporation system in the motorcycles leaving factory is greatly reduced. The outgoing quality of products is improved, and the enterprise competitiveness is promoted.
Description
Technical field
The present invention relates to a kind of defect inspection method of motorcycle fuel evaporation control system.
Background technology
According to the relevant decree of country, motorcycle has required to realize state's three emission standards at present.Like this, in motorcycle tank,, fuel evaporation control system just need be set control in order to guarantee the fuel tank normal fuel injection and to prevent that fluid from evaporateing in the atmosphere.In 125 riding-type motorcycles, its EVAP Evaporative System comprises the oil-gas separator that is positioned at fuel tank internal, oil-gas separator picks out the fuel tank outer end and connects Tipping valve from bottom to top from the fuel tank bottom by pipeline, and Tipping valve connects canister by pipeline again, and canister is connected to carburetor by pipeline.
Whether this existing motorcycle fuel evaporation system exists defective after producing assembling, does not also have a kind of reliable detection method, cause motorcycle to dispatch from the factory after, accidents such as leakage of oil usually take place in EVAP Evaporative System.So how to design and a kind ofly judge whether the motorcycle fuel evaporation system exists the detection method of defective, and there is problem to be solved cost this area.
Summary of the invention
At the prior art above shortcomings, technical matters to be solved by this invention is: provide a kind of and be used to judge whether the motorcycle fuel evaporation system exists the detection method of defective, with the minimizing probability that the motorcycle fuel evaporation system breaks down that dispatches from the factory, improve the product quality of dispatching from the factory.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of motorcycle fuel evaporation system defect detection method, it is characterized in that, may further comprise the steps: a, open fuel tank cap, with the Tipping valve dismounting down, the lasting air pressure that feeds 5kpa of oil-gas separator outlet from the fuel tank outside adopts air flowmeter at fuel tank cover port detection path flow, if do not reach 5 liters/minute, then judge to have defective, if reach 5 liters/minute then proceed subsequent step; The oil of b, adding 1/3 in fuel tank, whether with oil-gas separator outlet conduit weld and oil-gas separator exit have gasoline leak, if existence is leaked, then judge to have defective if detecting the fuel tank bottom, as there not being leakage, then proceed subsequent step; C, cover fuel tank cap, the air pressure that feeds 5kpa from the oil-gas separator exit of fuel tank outside kept 3 minutes, then judged greater than 0.97kpa as atmospheric pressure lost to have defective, less than 0.97kpa, then carried out subsequent step as atmospheric pressure lost; D, Tipping valve one end opening under the dismounting is blocked up, the other end applies the air pressure of 10 kpa, keep 30s, as occur leaking and then judge and have defective, then carry out subsequent step: e as not occurring leaking, the end that Tipping valve is blocked unclamps, and Tipping valve is simulated the installment state position shelve, continuing to feed pressure from Tipping valve top opening is the pressurized air of 20kpa, adopt air flowmeter from Tipping valve lower opening detected gas flow, after the air flowmeter demonstration is stable, if numerical value less than 7L/min then judge and have defective, is proceeded subsequent step if numerical value is less than or equal to 7L/min; F, the Tipping valve of e step state is tilted 55 °, continuing to feed pressure from Tipping valve top opening is the pressurized air of 5kpa, adopt air flowmeter from Tipping valve lower opening detected gas flow, after the air flowmeter demonstration is stable, if numerical value greater than 0.05L/min then judge and have defective, carries out subsequent step if numerical value is less than or equal to 0.05L/min; G, feed liquid gasoline from Tipping valve connected tank end, and applying 5.0kpa pressure, it is arbitrarily angled that Tipping valve is tilted, and leaks from the Tipping valve other end if any liquid gasoline, then judge to have defective, if Tipping valve other end no liquid gasoline leaks then carries out subsequent step; H, on g step basis, the pressure of cancellation Tipping valve connected tank end, and feed the pressurized air of 5.0kpa again from the Tipping valve other end, if liquid gasoline can not be discharged from Tipping valve connected tank end opening smoothly, then judge to have defective, if can discharge smoothly then carry out subsequent step; I, oil dropping apparatus refuel after the fuel tank ultimate limit state, roll fuel tank number minute or EVAP Evaporative System loaded onto motorcycle after on the distance of jolting, travelled 20 minutes, if liquid gasoline spills from the oil-gas separator outlet of fuel tank outside, then judge to have defective, if nothing spills then carries out subsequent step; J, EVAP Evaporative System is loaded onto motorcycle, fuel tank is toppled over motorcycle after filling it up with oil from the left side, if there is fluid to spill from the oil-gas separator outlet of fuel tank outside, then judges to have defective, if do not have that fluid spills then carry out subsequent step; K, the motorcycle in the j step is toppled over from the right, keep 20 minutes after, if from the oil-gas separator outlet oil spill liquid measure of fuel tank outside greater than 15ml, then judge to have defective, if less than 15ml then carry out subsequent step; L, the motorcycle in k step simulation descending state is kept 10min on greater than 20 ° slope, on level road, move 20min then, flame-out phenomenon occurs, then judge to have defective.
The applicant finds with analyzing after deliberation, the fault that EVAP Evaporative System leaks appears after motorcycle dispatches from the factory easily in early days, the place of wherein breaking down easily is mainly in oil-gas separator and two places of Tipping valve, so the applicant in the present invention, adopt and respectively these two members are detected separately, again modes such as EVAP Evaporative System installation back simulation practical operation situation detects are combined, can detect EVAP Evaporative System overwhelming majority defective fault, check the back of being out of order (after promptly there is defective in judgement) in each step, if this fault can be repaired, then can repair the back and continue the inspection of subsequent step, if can not repair then this EVAP Evaporative System can not dispatch from the factory, so just greatly reduce the probability of the motorcycle intermediate fuel oil vapo(u)rization system generation initial failure of dispatching from the factory.Improve the quality of finished product, promoted enterprise competitiveness.
Embodiment
During concrete enforcement: this motorcycle fuel evaporation system defect detection method, may further comprise the steps: a, open fuel tank cap, with the Tipping valve dismounting down, continue to feed the air pressure of 5kpa from the oil-gas separator outlet of fuel tank outside, adopt air flowmeter at fuel tank cover port detection path flow, if do not reach 5 liters/minute, then judge to have defective (showing that oil-gas separator has obstruction), if reach 5 liters/minute then proceed subsequent step; The oil of b, adding 1/3 in fuel tank, whether detect the fuel tank bottom has gasoline to leak with oil-gas separator outlet conduit weld and oil-gas separator exit, leak if exist, then judge and have defective (weld is caused poorly sealed by burn-through), as there not being leakage, then proceed subsequent step; C, cover fuel tank cap, the air pressure that feeds 5kpa from the oil-gas separator exit of fuel tank outside kept 3 minutes, then judged greater than 0.97kpa as atmospheric pressure lost to have defective (impermeability is not enough), less than 0.97kpa, then carried out subsequent step as atmospheric pressure lost; D, Tipping valve one end opening under the dismounting is blocked up, the other end applies the air pressure of 10 kpa, keep 30s, as occur leaking and then judge and have defective (Tipping valve impermeability deficiency), then carry out subsequent step: e as not occurring leaking, the end that Tipping valve is blocked unclamps, and Tipping valve is simulated the installment state position shelve, continuing to feed pressure from Tipping valve top opening is the pressurized air of 20kpa, adopt air flowmeter from Tipping valve lower opening detected gas flow, after the air flowmeter demonstration is stable, if numerical value less than 7L/min then judge and have defective (there is obstruction Tipping valve inside), is proceeded subsequent step if numerical value is less than or equal to 7L/min; F, the Tipping valve of e step state is tilted 55 °, continuing to feed pressure from Tipping valve top opening is the pressurized air of 5kpa, adopt air flowmeter from Tipping valve lower opening detected gas flow, after the air flowmeter demonstration is stable, if numerical value greater than 0.05L/min then judge and have defective (Tipping valve closes the valve performance deficiency), carries out subsequent step if numerical value is less than or equal to 0.05L/min; G, feed liquid gasoline from Tipping valve connected tank end, and applying 5.0kpa pressure, it is arbitrarily angled that Tipping valve is tilted, and leaks from the Tipping valve other end if any liquid gasoline, then judge to have defective, if Tipping valve other end no liquid gasoline leaks then carries out subsequent step; H, on g step basis, the pressure of cancellation Tipping valve connected tank end, and feed the pressurized air of 5.0kpa again from the Tipping valve other end, if liquid gasoline can not be discharged from Tipping valve connected tank end opening smoothly, then judge to have defective, if can discharge smoothly then carry out subsequent step; I, oil dropping apparatus refuel after the fuel tank ultimate limit state, roll fuel tank number minute or EVAP Evaporative System loaded onto motorcycle after on the distance of jolting, travelled 20 minutes, if liquid gasoline spills from the oil-gas separator outlet of fuel tank outside, then judge to have defective, if nothing spills then carries out subsequent step; J, EVAP Evaporative System is loaded onto motorcycle, fuel tank is toppled over motorcycle after filling it up with oil from the left side, if there is fluid to spill from the oil-gas separator outlet of fuel tank outside, then judges to have defective, if do not have that fluid spills then carry out subsequent step; K, the motorcycle in the j step is toppled over from the right, keep 20 minutes after, if from the oil-gas separator outlet oil spill liquid measure of fuel tank outside greater than 15ml, then judge to have defective, if less than 15ml then carry out subsequent step; L, the motorcycle in k step simulation descending state is kept 10min on greater than 20 ° slope, on level road, move 20min then, flame-out phenomenon occurs, then judge to have defective.
After being based on applicant's investigation and having analyzed a large amount of motorcycle fuel evaporation systems and dispatch from the factory, this method obtains after the situation of generation physical fault.Adopt in the method and respectively the oil-gas separator in this EVAP Evaporative System and two parts of Tipping valve are detected separately, again modes such as EVAP Evaporative System installation back simulation practical operation situation detects are combined, can fully detect the defective that EVAP Evaporative System exists, the numerical value that concrete detection that relates in its each step and judgement are adopted all is that the applicant obtains by experience estimation and a large amount of principle analysis with after testing, and can comparatively accurately detect whether there is defective.But the place that the present invention makes creative contribution to prior art is to be that each detects step itself more; if others only pro forma slightly change and substantially do not change step itself on the numerical value that criterion adopts should be considered as the obvious equivalent variations of the technical program and still falls within the scope of protection of the present invention.
The present invention is particularly suitable for when specifically implementing practicing in 125 riding-type motorcycles.
Claims (1)
1. motorcycle fuel evaporation system defect detection method, it is characterized in that, may further comprise the steps: a, open fuel tank cap, with the Tipping valve dismounting down, the lasting air pressure that feeds 5kpa of oil-gas separator outlet from the fuel tank outside adopts air flowmeter at fuel tank cover port detection path flow, if do not reach 5 liters/minute, then judge to have defective, if reach 5 liters/minute then proceed subsequent step; The oil of b, adding 1/3 in fuel tank, whether with oil-gas separator outlet conduit weld and oil-gas separator exit have gasoline leak, if existence is leaked, then judge to have defective if detecting the fuel tank bottom, as there not being leakage, then proceed subsequent step; C, cover fuel tank cap, the air pressure that feeds 5kpa from the oil-gas separator exit of fuel tank outside kept 3 minutes, then judged greater than 0.97kpa as atmospheric pressure lost to have defective, less than 0.97kpa, then carried out subsequent step as atmospheric pressure lost; D, Tipping valve one end opening under the dismounting is blocked up, the other end applies the air pressure of 10 kpa, keep 30s, as occur leaking and then judge and have defective, then carry out subsequent step: e as not occurring leaking, the end that Tipping valve is blocked unclamps, and Tipping valve is simulated the installment state position shelve, continuing to feed pressure from Tipping valve top opening is the pressurized air of 20kpa, adopt air flowmeter from Tipping valve lower opening detected gas flow, after the air flowmeter demonstration is stable, if numerical value less than 7L/min then judge and have defective, is proceeded subsequent step if numerical value is less than or equal to 7L/min; F, the Tipping valve of e step state is tilted 55 °, continuing to feed pressure from Tipping valve top opening is the pressurized air of 5kpa, adopt air flowmeter from Tipping valve lower opening detected gas flow, after the air flowmeter demonstration is stable, if numerical value greater than 0.05L/min then judge and have defective, carries out subsequent step if numerical value is less than or equal to 0.05L/min; G, feed liquid gasoline from Tipping valve connected tank end, and applying 5.0kpa pressure, it is arbitrarily angled that Tipping valve is tilted, and leaks from the Tipping valve other end if any liquid gasoline, then judge to have defective, if Tipping valve other end no liquid gasoline leaks then carries out subsequent step; H, on g step basis, the pressure of cancellation Tipping valve connected tank end, and feed the pressurized air of 5.0kpa again from the Tipping valve other end, if liquid gasoline can not be discharged from Tipping valve connected tank end opening smoothly, then judge to have defective, if can discharge smoothly then carry out subsequent step; I, oil dropping apparatus refuel after the fuel tank ultimate limit state, roll fuel tank number minute or EVAP Evaporative System loaded onto motorcycle after on the distance of jolting, travelled 20 minutes, if liquid gasoline spills from the oil-gas separator outlet of fuel tank outside, then judge to have defective, if nothing spills then carries out subsequent step; J, EVAP Evaporative System is loaded onto motorcycle, fuel tank is toppled over motorcycle after filling it up with oil from the left side, if there is fluid to spill from the oil-gas separator outlet of fuel tank outside, then judges to have defective, if do not have that fluid spills then carry out subsequent step; K, the motorcycle in the j step is toppled over from the right, keep 20 minutes after, if from the oil-gas separator outlet oil spill liquid measure of fuel tank outside greater than 15ml, then judge to have defective, if less than 15ml then carry out subsequent step; L, the motorcycle in k step simulation descending state is kept 10min on greater than 20 ° slope, on level road, move 20min then, flame-out phenomenon occurs, then judge to have defective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110001079A CN102156029B (en) | 2011-01-05 | 2011-01-05 | Defect detection method of motorcycle fuel evaporation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110001079A CN102156029B (en) | 2011-01-05 | 2011-01-05 | Defect detection method of motorcycle fuel evaporation system |
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| CN102156029A true CN102156029A (en) | 2011-08-17 |
| CN102156029B CN102156029B (en) | 2012-10-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095228A (en) * | 2019-05-29 | 2019-08-06 | 深圳市康士柏实业有限公司 | For the detection of fuel evaporation checkout and diagnosis equipment and the test macro and test method of measurement and calibration |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573071A (en) * | 2003-05-29 | 2005-02-02 | 日立优喜雅汽车配件有限公司 | Leakage diagnosis apparatus for fuel vapor purge system and method thereof |
| JP2005257340A (en) * | 2004-03-09 | 2005-09-22 | Toyota Motor Corp | Gas leak detection device for high-pressure tank system |
| CN2819199Y (en) * | 2005-09-21 | 2006-09-20 | 上海大众汽车有限公司 | Fuel oil system sealing tester |
| CN101476963A (en) * | 2009-01-16 | 2009-07-08 | 亚普汽车部件有限公司 | Detection method for osmotic concentration of vehicle fuel tank welding point and connector |
-
2011
- 2011-01-05 CN CN201110001079A patent/CN102156029B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573071A (en) * | 2003-05-29 | 2005-02-02 | 日立优喜雅汽车配件有限公司 | Leakage diagnosis apparatus for fuel vapor purge system and method thereof |
| JP2005257340A (en) * | 2004-03-09 | 2005-09-22 | Toyota Motor Corp | Gas leak detection device for high-pressure tank system |
| CN2819199Y (en) * | 2005-09-21 | 2006-09-20 | 上海大众汽车有限公司 | Fuel oil system sealing tester |
| CN101476963A (en) * | 2009-01-16 | 2009-07-08 | 亚普汽车部件有限公司 | Detection method for osmotic concentration of vehicle fuel tank welding point and connector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095228A (en) * | 2019-05-29 | 2019-08-06 | 深圳市康士柏实业有限公司 | For the detection of fuel evaporation checkout and diagnosis equipment and the test macro and test method of measurement and calibration |
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| CN102156029B (en) | 2012-10-17 |
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Effective date of registration: 20151112 Address after: 400054 Banan District, Chongqing building Avenue, No. 2, building 1 Patentee after: CHONGQING CONSTRUCTION ELECTROMECHANICAL CO., LTD. Address before: 400054 Huaxi Industrial Park, Banan District, Chongqing Road, No. 1 Patentee before: Chongqing Jianshe Motorcycle Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20170105 |