CN101144754A - Automobile and engine experimental table oil path failure setting method and device - Google Patents
Automobile and engine experimental table oil path failure setting method and device Download PDFInfo
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- CN101144754A CN101144754A CNA2007100597718A CN200710059771A CN101144754A CN 101144754 A CN101144754 A CN 101144754A CN A2007100597718 A CNA2007100597718 A CN A2007100597718A CN 200710059771 A CN200710059771 A CN 200710059771A CN 101144754 A CN101144754 A CN 101144754A
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- oil
- fuel
- pressure
- supply system
- intercepting valve
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Abstract
The invention relates to a method for the man-made setting of an engine experimental table oil circuit default and the default detection, diagnosis and analysis of a vehicle electronic oil supply system. The invention is technically characterized in that the invention is a device which can be used for the special technical training of the vehicle, the qualification level certification and evaluation, and the man-made setting of the electronic oil supply system default of the vehicle. The default which can be set comprises oil circuit blockage, oil sprayer dribbling, fuel oil cleaner blockage, too high the pressure regulating of a fuel oil pressure regulator, too low the pressure regulating of a fuel oil pressure regulator, low the oil supply pressure caused by the oil pump wearing, and the too high pump pressure. By using only a plurality of simple devices such as a shutoff valve, an extra pipeline, a four way box, and a pressure meter, and by changing the flow direction and the flow quantity of the oil intake and the oil return, the oil circuit default is realized. The invention relates to the electronic oil supply system in varieties of structure type, the structure is simple, the operation is convenient, and the cost is low.
Description
Affiliated technical field
The invention discloses the artificial method that is provided with and detects diagnostic analysis at the automotive electronics oil supply system failure of a kind of automobile and engine experimental table oil path failure.
Background technology
The automotive electronics oil supply system is one of big main system of three in the automotive electronic control system system.In current various imports in usefulness, in the middle of the domestic automobile, it is common faults type comparatively that oil supply system breaks down, the automobile assembly parts that relate to are also many, because the import that makes preparations for sowing of today, the oil supply system of domestic automobile all is that employing is electronically controlled, therefore its fault diagnosis technology requires high, certain degree of difficulty is arranged, and at automobile maintenance industry, grasp comprehensively and detect at the automotive electronics oil supply system failure, diagnosis, and can carry out quantitatively oil path failure, the technician of qualitative analysis comparatively lacks, work is organized grade of skill evaluation and technical examination etc. with traffic department, also is difficult to relate to these aspects comprehensively.
On the other hand, in automotive operation and the training of service engineering vocational education, also lacking a kind ofly can provide the common and exceptional fault of automotive electronics oil supply system that makes preparations for sowing at any time, simultaneously, do not damage the device of " recurrence of failure " of automobile overall performance again, the result of this " recurrence of failure " and degree can also be subjected to artificial control.
Summary of the invention
At the problems referred to above, the invention provides the artificial method and apparatus that is provided with of a kind of automobile and engine experimental table electronics oil supply system failure, mainly comprise one section extra pipeline (4), a four-way (15), intercepting valve A (9), intercepting valve B (10), intercepting valve C (11) and fixed head and a fuel pressure gauge (5) that is used for monitor force.Particular content is: block electronic fuel pump to the oil feed line between the fuel pressure regulator (3), intercepting valve (11) is installed, a four-way (15) is installed in front at intercepting valve, one end of four-way connects one section extra pipeline (4), the other end of this pipeline feeds fuel tank (1), the other end of four-way is connected to fuel pressure gauge (5), and an intercepting valve (10) is installed on extra pipeline, and an intercepting valve (9) is installed on scavenge pipe.By tuning or close intercepting valve (9), intercepting valve (10) and intercepting valve (11), just can realize simulating that oil circuit obstruction, fuel valve dribbling, fuel filter are stopped up, the fuel pressure regulator pressure regulation is too high, the fuel pressure regulator pressure regulation is low excessively, the oil pump wearing and tearing cause that charge oil pressure is low, pump pressure is crossed high polytype automobile oil supply system failure.
Its structural principle and be connected as shown in the figure with the installation of automobile or engine experimental table:
Description of drawings
Accompanying drawing 1 is that oil path failure is provided with schematic diagram.
Accompanying drawing 2 is installation panel figure of intercepting valve
In the accompanying drawing 1:
The 1st, fuel tank
The 2nd, electronic fuel pump
The 3rd, oil inlet pipe
The 4th, the one section pipeline that adds
The 5th, external fuel pressure gauge
The 6th, the fuel injector mounting bracket
The 7th, fuel pressure regulator
The 8th, scavenge pipe
The 9th, intercepting valve A
The 10th, intercepting valve B
The 11st, intercepting valve C
12 is four fuel injectors
The 13rd, the vacuum tube interface
The 14th, oil filler
The 15th, the four-way that adds
In the accompanying drawing 2:
The 1st, the fixed head of intercepting valve
The 2nd, intercepting valve A
The 3rd, intercepting valve B
The 4th, intercepting valve C
The fuel pressure regulator of present most of automobiles all is installed in an end of fuel injector support, we are referred to as " external fuel pressure regulator " usually, but also have some vehicles, fuel pressure regulator is designed to become one with electronic fuel pump, be immersed in the fuel tank, we are referred to as " built-in fuel pressure regulator " usually.Vehicle fuel feed system at " built-in fuel pressure regulator " structure, the artificial technical scheme that is provided with of its electronics oil supply system failure is provided with principle and method basically identical with the vehicle fuel feed system fault of " external fuel pressure regulator " structure.See accompanying drawing 3 for details.
Specific embodiments
As shown in Figure 2, intercepting valve A (2) and intercepting valve C (4) are in fully open position, intercepting valve B (3) are in full close position, the fuel oil supply system operate as normal.Intercepting valve A (2) and intercepting valve C (4) are in fully open position, adjust intercepting valve B (3), because a part of fuel oil flows back to fuel tank by the one section pipeline that adds, therefore the fuel injector support can not keep enough pressure, observe fuel pressure gauge and find that pressure is lower than normal value, so the fault that similar fuel valve dribbling, oil circuit rush down leakage occurs.The condition of this fault setting is: fuel pressure is closed generator after setting up.Intercepting valve C (4) is in fully open position, intercepting valve B (3) is in full close position, adjust intercepting valve A (2), observe fuel pressure gauge and find that pressure is higher than normal value, this is because the oil return caliber attenuates, cause oil return not smooth, so the too high fault of similar fuel pressure regulator pressure regulation occurs.The condition that is provided with of this fault is: the engine operation also is in idling operation.Intercepting valve A (2) is in fully open position, intercepting valve B (3) is in full close position, adjust intercepting valve C (4), can find that the fuel pressure gauge pressure is apparently higher than normal value, because the in-line caliber diminishes, cause oil-feed not smooth, the fault that similar oil circuit stops up, fuel filter wears out obstruction, high type is crossed in the fuel pressure regulator pressure regulation occurs.The condition that is provided with of this fault is: engine operation, idling operation.What pay particular attention to is: this fault is set to be needed to note at any time observing the pressure that fuel pressure gauge shows, should kill engine before tensimeter indicated pressure≤6Kp, in order to avoid too high oil pipe explosion or the joint of causing of line pressure comes off.
Claims (3)
1. the artificial method that is provided with and detects diagnostic analysis at the automotive electronics oil supply system failure of automobile and engine experimental table oil path failure.Its technical characterictic is: be used for automobile major technical training, grade of skill and identify with examination, the device of automotive electronics oil supply system failure can artificially be set, the fault that can be provided with comprises that oil circuit obstruction, fuel valve dribbling, fuel filter stop up, the fuel pressure regulator pressure regulation is too high, the fuel pressure regulator pressure regulation is low excessively, the oil pump wearing and tearing cause that charge oil pressure is low, pump pressure is high excessively.
2. method as claimed in claim 1 is characterized in that: use some simple devices, comprise intercepting valve, extra pipeline, four-way connection, tensimeter, by changing the flow direction and the flow of oil-feed, oil return, realize the oil piping system fault.
3. a method as claimed in any preceding claim, it is characterized in that: intercepting valve A, intercepting valve B and intercepting valve C are installed on the fixed head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100597718A CN101144754A (en) | 2007-09-25 | 2007-09-25 | Automobile and engine experimental table oil path failure setting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100597718A CN101144754A (en) | 2007-09-25 | 2007-09-25 | Automobile and engine experimental table oil path failure setting method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101144754A true CN101144754A (en) | 2008-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100597718A Pending CN101144754A (en) | 2007-09-25 | 2007-09-25 | Automobile and engine experimental table oil path failure setting method and device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101144754A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368875B (en) * | 2008-05-07 | 2010-04-14 | 奇瑞汽车股份有限公司 | Testing bench frame and method for engine with variable compression ratio |
| CN102465939A (en) * | 2010-11-04 | 2012-05-23 | 北汽福田汽车股份有限公司 | Lifting system fault judgment device and system as well as fault judgment method |
| CN106157787A (en) * | 2015-03-30 | 2016-11-23 | 上海通用汽车有限公司 | Vehicle fuel system failure analog and analogy method |
| CN112857821A (en) * | 2020-12-24 | 2021-05-28 | 联合汽车电子有限公司 | Failure recognition device and failure recognition method for fuel distribution pipe assembly |
-
2007
- 2007-09-25 CN CNA2007100597718A patent/CN101144754A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368875B (en) * | 2008-05-07 | 2010-04-14 | 奇瑞汽车股份有限公司 | Testing bench frame and method for engine with variable compression ratio |
| CN102465939A (en) * | 2010-11-04 | 2012-05-23 | 北汽福田汽车股份有限公司 | Lifting system fault judgment device and system as well as fault judgment method |
| CN106157787A (en) * | 2015-03-30 | 2016-11-23 | 上海通用汽车有限公司 | Vehicle fuel system failure analog and analogy method |
| CN112857821A (en) * | 2020-12-24 | 2021-05-28 | 联合汽车电子有限公司 | Failure recognition device and failure recognition method for fuel distribution pipe assembly |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080319 |