CN103424229A - Device and method for detecting leakproofness of vehicle exhaust system - Google Patents
Device and method for detecting leakproofness of vehicle exhaust system Download PDFInfo
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- CN103424229A CN103424229A CN2012101628004A CN201210162800A CN103424229A CN 103424229 A CN103424229 A CN 103424229A CN 2012101628004 A CN2012101628004 A CN 2012101628004A CN 201210162800 A CN201210162800 A CN 201210162800A CN 103424229 A CN103424229 A CN 103424229A
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Abstract
The invention discloses a device and method for detecting the leakproofness of a vehicle exhaust system. The device for detecting the leakproofness of the vehicle exhaust system comprises a compressed air source, a connection nozzle, a guide pipe and a leak detector. The compressed air source is used for providing compressed air used for leakproofness detection; the connection nozzle is connected to a tail pipe of a vehicle to be detected to lead the compressed air into the exhaust system of the vehicle to be detected, and the connection nozzle is in the shape of a circular truncated cone of which the top extends into the tail pipe; the guide pipe is used for achieving gas-path connection of the compressed air source and the connection nozzle; foaming liquid is contained in the leak detector, and the leak detector sprays the foaming liquid to each joint of the tail pipe and an engine exhaust port of the vehicle to be detected to detect whether the exhaust system leaks air. The device and method can detect the leakproofness of the vehicle exhaust system easily, quickly and effectively.
Description
Technical field
The present invention relates to the vehicle technology field, relate in particular to a kind of vehicle exhaust system device for detecting sealability and vehicle exhaust system method for conducting leak test.
Background technology
Current social is more and more paid attention to environmental protection, and along with rolling up of automobile pollution, controlling emission from vehicles is one of major measure.And, when carrying out the Vehicular exhaust detection, the sealing of vehicle exhaust system has much relations to the accuracy of testing result.If vehicle is when carrying out the tail gas detection, leakage phenomenon appears in the exhaust system of vehicle, just can't reflect really the emission from vehicles level.Therefore, GB18352.3-2005 light-duty vehicle pollutant emission limit and measuring method (Chinese III, IV stage) C3.1.2 regulation: exhaust system must not have any leakage, in order to avoid reduce the collecting amount of engine Exhaust Gas.
In prior art, whether the vehicle inspection exhaust system leaks, and is also that the method for sealing is very simple, also there is no the check process of regulation, thereby the result detected is very unreliable.In addition, the specification of the tailpipe in the exhaust system of vehicle also is not quite similar, and to sealing propertytest, brings not little difficulty.
For this phenomenon, need exploitation a set of can adapt to the different tailpipes of different automobile types can be simply, the vehicle exhaust system device for detecting sealability and the inspection method that are detected fast and effectively.
Summary of the invention
For problems of the prior art, purpose of the present invention for provide a kind of can adapt to the different tailpipes of different automobile types can be simply, fast, the vehicle exhaust system device for detecting sealability that effectively detected.
Another object of the present invention for provide a kind of can adapt to the different tailpipes of different automobile types can be simply, fast, the vehicle exhaust system method for conducting leak test that effectively detected.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of vehicle exhaust system device for detecting sealability, is characterized in that, described vehicle exhaust system device for detecting sealability comprises: compressed air source, in order to the pressurized air that provides sealing propertytest to use; Connect nozzle, be connected in the tailpipe of detected vehicle, described pressurized air is passed into to the exhaust system of described detected vehicle, described connection nozzle is that top extends to round table-like in described tailpipe; Conduit, connect described compressed air source with the described nozzle gas circuit that is connected; And leak locator, be equipped with foaming liquid in described leak locator, whether described leak locator sprays described foaming liquid to each junction between the engine exhaust port of described tailpipe and described detected vehicle and leaks gas to detect described exhaust system.
A kind of vehicle exhaust system method for conducting leak test, described vehicle exhaust system method for conducting leak test comprises: step S1: the tailpipe of vehicle to be detected is connected in to a round table-like connection nozzle, the top of described connection nozzle extends in described tailpipe, and described connection nozzle is connected with a compressed air source by a conduit; Step S2: by described conduit, in the exhaust system of described detected vehicle, pass into the pressurized air that comes from described compressed air source; Step S3: operate the leak locator that an inside is equipped with foaming liquid, spray described foaming liquid to each junction between the engine exhaust port of described tailpipe and described detected vehicle and whether leak gas to detect described exhaust system.
Beneficial effect of the present invention is, vehicle exhaust system device for detecting sealability of the present invention, and whether the exhaust system that can check vehicles simply, fast and effectively leaks gas, the impact of having avoided vehicle exhaust system gas leakage to detect tail gas.Vehicle exhaust system device for detecting sealability of the present invention is installed, convenient disassembly is quick, simple to operation, and material therefor be easy to drawing materials material or standardized material, is easy to make and implement.
The accompanying drawing explanation
The schematic diagram of the vehicle exhaust system device for detecting sealability that Fig. 1 is the embodiment of the present invention.
The enlarged diagram that Fig. 2 is A section in Fig. 1.
The process flow diagram of the vehicle exhaust system method for conducting leak test that Fig. 3 is the embodiment of the present invention.
Embodiment
The exemplary embodiments that embodies feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various variations on different embodiment, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be when the use that explain in itself, but not in order to limit the present invention.
Lower mask body is introduced the vehicle exhaust system device for detecting sealability of the preferred embodiment of the present invention.
As depicted in figs. 1 and 2, the vehicle exhaust system device for detecting sealability of the embodiment of the present invention, comprise compressed air source 1, conduit 2, pressure-regulating valve 3 and be connected nozzle 4;
When carrying out the vehicle sealing propertytest, need to use pressurized air, therefore, compressed air source 1 is used to provide the pressurized air that sealing propertytest is used, compressed air source 1 can be both the compressed air generator that vehicle exhaust system device for detecting sealability of the present invention is provided for oneself, and also can connect the external compression air generator by pipeline provides pressure gas.
Connect nozzle 3, it is the seal that connects the tailpipe 51 of detected vehicle 5, pressurized air is to pass into the exhaust system of detected vehicle from connecting nozzle 4, it is round table-like connecting nozzle 4, round platform claims again truncated cones, that an end face and bottom surface are respectively circular solid figure, can regard a large circular cone as and deduct a shape that similar conicle is remaining, end face one side of round platform stretches in tailpipe 51, round table-like benefit is the columniform tailpipe that can adapt to tailpipe 51, the especially different-diameter of different size.Even tailpipe 51 is not cylindrical, does not hinder yet the top of round table-like connection nozzle 4 is stretched in tailpipe 51, so that pressurized air is passed in exhaust system.Connecting nozzle 4 is quality of rubber materials, therefore, after tailpipe 51 is filled on the top that will connect nozzle 4, does not need to fix with other objects.Connect nozzle 4 and there is central through hole 40, conduit 2 can be penetrated to central through hole 40 and pressurized air be passed into to the exhaust system of detected vehicle.For the ease of conduit 2 is inserted to the central through hole 40 that connects nozzle 4, the conduit 2 that penetrates central through hole 40 is inlet tube 24, can in pressure-regulating valve 3 gas outlets, (or weighing up mouth) rapid-acting coupling 31 be set, the inlet tube 24 that connects teflon material or nylon material by rapid-acting coupling 31, inlet tube 24 is penetrated to described central through hole 40 to pass into described pressure gas, and inlet tube 24 is easy to connect and be convenient to pull.The material of rapid-acting coupling 31 is for example stainless steel, and the conduit 3 air intake openings 2 can be metal tube or polyfluortetraethylene pipe from compressed air source 1 to pressure-regulating valve.The front end of inlet tube 24 both can stretch out the central through hole 40 that connects nozzle 4 and enter in tailpipe 51, also can be concordant with the front end that is connected nozzle 4, or as depicted in figs. 1 and 2, the front end of inlet tube 24 is in central through hole 40, and above three kinds of modes all can.
As depicted in figs. 1 and 2, conduit 2 by compressed air source 1 be connected nozzle 4 gas circuits and connect; On conduit 2, be provided with pressure-regulating valve 3, pass into the pressure of the pressure gas of described exhaust system in order to adjusting, for example 1kg/cm
2, can make air pressure in the exhaust system of detected vehicle be not more than the withstand voltage of himself, avoid the exhaust system of detected vehicle to suffer damage because of sealing propertytest.Tensimeter 30 is arranged on pressure-regulating valve 3, but the convenient operation personnel observe the barometric information of pressure gas.Conduit 2 can be nylon tube, can be also metal tube.
After being detected vehicle 5 and being connected nozzle 4, conduit 2 and compressed air source 1 and connecting, need to detect the tailpipe 51 of detected vehicle 5 and whether each junction between the engine exhaust port (not shown) leaks gas by the leak locator (not shown), all junctions are air tight, just show that the sealing of whole exhaust system meets testing requirement.
Described leak locator is the plastics watering can preferably, but is not limited to this, so long as be equipped with foaming liquid in it, can by the device of foaming liquid ejection all can, foaming liquid is such as can be hand cleanser etc.
For the ease of detected vehicle and the connection that is connected nozzle 4 and conduit 2 etc., the vehicle exhaust system device for detecting sealability of the embodiment of the present invention also comprises lifting device 6, detected vehicle 5 is placed on the top board 60 of lifting device 6, will be detected vehicle 5 and be raise.Certainly, also can adopt the high platform of slope climbing type and the position that will be detected vehicle 5 raises to be operated, also can utilize the work groove lower than ground to be connected the connection of nozzle 4 and conduit 2 etc. and the leak detection operation of leak locator.
Below introduce again the vehicle exhaust system method for conducting leak test of the embodiment of the present invention:
Before carrying out step S1, can will be detected vehicle 5 with lifting device and raise, so that connect nozzle 4 and conduit 2; Perhaps, also can will be detected that the high platform of upper slope climbing type left by vehicle 5 and the position of vehicle is raise, or vehicle 5 to be detected is reached to the top lower than the work groove on ground.
As shown in Figure 3, in step S1, the tailpipe of vehicle 5 to be detected 51 is connected in and connects nozzle 4, connect nozzle 4 and extend in described automobile tail pipe 51, connect nozzle 4 and be connected with compressed air source 1 by conduit 2; On conduit 2, pressure-regulating valve 3 can be set, the gas outlet of pressure-regulating valve 3 connects inlet tube 24 by rapid-acting coupling 31, and inlet tube 24 penetrates the central through hole 40 that connects nozzle 4 and passes into pressure gas with the exhaust system to detected vehicle.
Step S2: pass into the pressurized air that comes from compressed air source 1 by conduit 2 in the exhaust system of detected vehicle 5, can for example regulate the pressure of described pressure gas, to set pressure, 1kg/cm by pressure-regulating valve 3
2.
Step S3: the operation leak locator, spray described foaming liquid to each junction between the engine exhaust port of described tailpipe 51 and described detected vehicle 5, to detect described exhaust system, whether leak gas.If find that there is bubble the some junctions in above-mentioned junction, this junction gas leakage of surface, need to be keeped in repair, if bubble is not all found in any one junction of above-mentioned junction, shows that the sealing of detected vehicle meets testing requirement.
The vehicle exhaust system device for detecting sealability of the embodiment of the present invention, whether the exhaust system that can simply, fast, effectively check vehicles leaks gas, the impact of having avoided vehicle exhaust system gas leakage to detect tail gas.And the vehicle exhaust system device for detecting sealability of the embodiment of the present invention is installed, convenient disassembly is quick, simple to operation, and material therefor be easy to drawing materials material or standardized material, be easy to make and implement.
Those skilled in the art should recognize in the situation that do not break away from change and the retouching that scope and spirit of the present invention that the appended claim of the present invention discloses are done, within all belonging to the protection domain of claim of the present invention.
Claims (10)
1. a vehicle exhaust system device for detecting sealability, is characterized in that, described vehicle exhaust system device for detecting sealability comprises:
Compressed air source (1), in order to the pressurized air that provides sealing propertytest to use;
Connect nozzle (4), be connected in the tailpipe (51) of detected vehicle (5), described pressurized air is passed into to the exhaust system of described detected vehicle (5), described connection nozzle (4) is round table-like in described tailpipe (51) for top extends to;
Conduit (2), connect described compressed air source (1) with described nozzle (4) gas circuit that is connected; And
Leak locator, be equipped with foaming liquid in described leak locator, and whether described leak locator sprays described foaming liquid to each junction between the engine exhaust port of described tailpipe (51) and described detected vehicle (5) and leak gas to detect described exhaust system.
2. vehicle exhaust system device for detecting sealability as claimed in claim 1, it is characterized in that, described vehicle exhaust system device for detecting sealability also comprise be arranged at described conduit (2) pass into the pressure-regulating valve (3) of the compression pressure of described exhaust system in order to adjusting.
3. vehicle exhaust system device for detecting sealability as claimed in claim 2, it is characterized in that, described connection nozzle (4) has central through hole (40), the described conduit (2) that described pressure-regulating valve (3) gas outlet connects is the inlet tube (24) of teflon or nylon material, and described inlet tube (24) penetrates described central through hole (40) to pass into described pressure gas.
4. vehicle exhaust system device for detecting sealability as claimed in claim 2, is characterized in that, described inlet tube (24) is connected by rapid-acting coupling (31) with described pressure-regulating valve (3) gas outlet.
5. vehicle exhaust system device for detecting sealability as claimed in claim 1, is characterized in that, described leak locator is the plastics watering can.
6. vehicle exhaust system device for detecting sealability as claimed in claim 1, is characterized in that, described connection nozzle (4) is quality of rubber materials.
7. a vehicle exhaust system method for conducting leak test, is characterized in that, described vehicle exhaust system method for conducting leak test comprises:
Step S1: the tailpipe of vehicle to be detected (5) (51) is connected in to a round table-like connection nozzle (4), the top of described connection nozzle (4) extends in described tailpipe (51), and described connection nozzle (4) is connected with a compressed air source (1) by a conduit (2);
Step S2: by described conduit (2), in the exhaust system of described detected vehicle (5), pass into the pressurized air that comes from described compressed air source (1);
Step S3: operate the leak locator that an inside is equipped with foaming liquid, spray described foaming liquid to each junction between the engine exhaust port of described tailpipe (51) and described detected vehicle (5) and whether leak gas to detect described exhaust system.
8. vehicle exhaust system method for conducting leak test as claimed in claim 7, it is characterized in that, in step S 1, pressure-regulating valve (3) is set on conduit (2), in step S2, regulate the pressure of described pressure gas by pressure-regulating valve (3) to set pressure.
9. vehicle exhaust system method for conducting leak test as claimed in claim 7, is characterized in that, before step S1, also comprises the step described detected vehicle (5) raise with lifting device (6).
10. vehicle exhaust system method for conducting leak test as claimed in claim 9, it is characterized in that, in step S1, the inlet tube (24) that the described conduit (2) connected by rapid-acting coupling (31) in described pressure-regulating valve (3) gas outlet is teflon or nylon material, described inlet tube (24) penetrates the central through hole (40) of described connection nozzle (4) to described exhaust system, to pass into described pressure gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101628004A CN103424229A (en) | 2012-05-23 | 2012-05-23 | Device and method for detecting leakproofness of vehicle exhaust system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101628004A CN103424229A (en) | 2012-05-23 | 2012-05-23 | Device and method for detecting leakproofness of vehicle exhaust system |
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| CN103424229A true CN103424229A (en) | 2013-12-04 |
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| CN2012101628004A Pending CN103424229A (en) | 2012-05-23 | 2012-05-23 | Device and method for detecting leakproofness of vehicle exhaust system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802345A (en) * | 2019-03-11 | 2019-05-24 | 江南造船(集团)有限责任公司 | Detachable pipe structure, cable tube and air-tightness detection method |
| CN110672276A (en) * | 2019-09-12 | 2020-01-10 | 潍柴动力股份有限公司 | Method and device for detecting tightness of vehicle exhaust pipeline |
| CN115585961A (en) * | 2022-09-30 | 2023-01-10 | 中国重汽集团济宁商用车有限公司 | Air tightness detection tool and detection method for exhaust pipe of national sixfold card |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061014A (en) * | 1976-10-27 | 1977-12-06 | Bott Gerald J | Bottle inspection apparatus |
| WO1993014388A1 (en) * | 1992-01-07 | 1993-07-22 | British Gas Plc | Apparatus for and method of removing liquids |
| US5753800A (en) * | 1997-01-16 | 1998-05-19 | Gilliam; Leslie | Smoke generating apparatus for in situ exhaust leak detection |
| JP2004077424A (en) * | 2002-08-22 | 2004-03-11 | Toyota Motor Corp | Exhaust measurement method for internal combustion engine |
| US20050284211A1 (en) * | 2004-06-23 | 2005-12-29 | Cram John O | Method for detection of leaks |
| CN202119602U (en) * | 2011-06-22 | 2012-01-18 | 芜湖恒耀汽车零部件有限公司 | Air tightness detection machine for automobile exhaust pipe |
| CN202204656U (en) * | 2011-08-17 | 2012-04-25 | 南京南车浦镇城轨车辆有限责任公司 | Vehicle brake pipeline air-tightness detection device |
-
2012
- 2012-05-23 CN CN2012101628004A patent/CN103424229A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061014A (en) * | 1976-10-27 | 1977-12-06 | Bott Gerald J | Bottle inspection apparatus |
| WO1993014388A1 (en) * | 1992-01-07 | 1993-07-22 | British Gas Plc | Apparatus for and method of removing liquids |
| US5753800A (en) * | 1997-01-16 | 1998-05-19 | Gilliam; Leslie | Smoke generating apparatus for in situ exhaust leak detection |
| JP2004077424A (en) * | 2002-08-22 | 2004-03-11 | Toyota Motor Corp | Exhaust measurement method for internal combustion engine |
| US20050284211A1 (en) * | 2004-06-23 | 2005-12-29 | Cram John O | Method for detection of leaks |
| CN202119602U (en) * | 2011-06-22 | 2012-01-18 | 芜湖恒耀汽车零部件有限公司 | Air tightness detection machine for automobile exhaust pipe |
| CN202204656U (en) * | 2011-08-17 | 2012-04-25 | 南京南车浦镇城轨车辆有限责任公司 | Vehicle brake pipeline air-tightness detection device |
Non-Patent Citations (3)
| Title |
|---|
| 《压力容器实用技术丛书》编写委员会: "《压力容器检验及无损检测》", 31 May 2006, article "试验升压程序及检查", pages: 180-182 * |
| 世界知识产权组织编著，国家知识产权局专利局译: "《国际专利分类表（IPC）》", 31 January 2006, article "结构部件的流体密封性的测试", pages: 37 * |
| 王景文: "《建筑检测试验》", 31 January 2009, article "制冷系统气密性试验记录", pages: 307 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802345A (en) * | 2019-03-11 | 2019-05-24 | 江南造船(集团)有限责任公司 | Detachable pipe structure, cable tube and air-tightness detection method |
| CN110672276A (en) * | 2019-09-12 | 2020-01-10 | 潍柴动力股份有限公司 | Method and device for detecting tightness of vehicle exhaust pipeline |
| CN115585961A (en) * | 2022-09-30 | 2023-01-10 | 中国重汽集团济宁商用车有限公司 | Air tightness detection tool and detection method for exhaust pipe of national sixfold card |
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Application publication date: 20131204 |