CN206221124U - It is a kind of to investigate the instrument that common-rail injector high pressure reveals failure - Google Patents
It is a kind of to investigate the instrument that common-rail injector high pressure reveals failure Download PDFInfo
- Publication number
- CN206221124U CN206221124U CN201621138764.8U CN201621138764U CN206221124U CN 206221124 U CN206221124 U CN 206221124U CN 201621138764 U CN201621138764 U CN 201621138764U CN 206221124 U CN206221124 U CN 206221124U
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- common
- rail
- pressure
- injector
- rail injector
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- Combined Controls Of Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model is intended to overcome cannot accurately judge that the problem of high-pressure leakage failure occurs in the common-rail injector in diesel engine of commercial vehicle in which cylinder at present, the instrument that common-rail injector high pressure reveals failure is investigated there is provided a kind of, it is characterised in that it includes calibration tool module, data wire, flowmeter, high-pressure drain plug and transit joint；Calibration tool module is connected by the Diesel Engine Control unit of data wire and diesel engine to be investigated, and calibration tool module is used for monitoring and controlling engine operating state；High-pressure drain plug is accessed between the common-rail injector and high pressure oil rail of diesel engine to be investigated, and high-pressure drain plug can prevent high-pressure diesel from entering common-rail injector from high pressure oil rail；Flowmeter is connected in series on the total oil return pipe of the fuel injector of diesel engine to be investigated by transit joint；The utility model can be measured under different operating modes on vehicle, the recirculating oil quantity of the common-rail injector of varying number, and measured value judges that specific which common-rail injector has high pressure leakage failure.
Description
Technical field
The utility model belongs to the technical field of Design Technology for Diesels, more particularly to a kind of investigation diesel engine of commercial vehicle common rail spray
Oily device high pressure reveals the instrument of failure.
Background technology
Domestic diesel engine generally uses electric-controlled co-rail fuel injection system, common rail system in application process usually due to
The failure of common-rail injector high pressure leakage causes the engine cannot to start, be short of power, shake, or even flame-out.User often because
There is the failure of high pressure leakage, often more transducer set oil spout for which cylinder or which cylinder common-rail injector cannot be accurately judged to
Device, this is resulted in, and user's economic loss is very big, and mood is complained in generation.
The content of the invention
Regarding to the issue above, the purpose of this utility model is to provide a kind of investigation diesel engine of commercial vehicle common-rail injector high pressure
The instrument of failure is revealed, phenomenon of the failure can be effectively analyzed using this set instrument, be accurately judged to trouble unit, when shortening maintenance
Between, reduce user's economic loss, it is ensured that the quickly input operation again of user's vehicle.
What the technical solution of the utility model was realized in：
It is a kind of to investigate the instrument that common-rail injector high pressure reveals failure, it is characterised in that including calibration tool module, data
Line, flowmeter, high-pressure drain plug and transit joint；Calibration tool module is by data wire and the control unit of diesel engine to be investigated
Connection, calibration tool module is used for monitoring and controlling engine operating state；High-pressure drain plug accesses being total to for diesel engine to be investigated
Between rail injector and high pressure oil rail, high-pressure drain plug can prevent high-pressure diesel from entering common-rail injector from high pressure oil rail；Flow
Meter is connected in series on the total oil return pipe of the fuel injector of diesel engine to be investigated by transit joint.
During common-rail injector normal work, to in-cylinder injection high-pressure diesel, while oil return can be produced to be flowed through oil return house steward
Oil return box；If because the reason such as abrasion produces high pressure to reveal failure, oil return of oil injector amount can be greatly increased common-rail injector.
The utility model is based on common-rail injector oil spout, the oil return course of work and characteristic, uses calibration tool module monitors
With the pressure and distributive value of Remote electronic control common rail system, measured on vehicle under different operating modes using flowmeter, different number
The recirculating oil quantity of the common-rail injector of amount, judges there is being total to for high pressure leakage failure according to measured value and the comparative result of standard value
Rail injector, targetedly changes failure fuel injector.
Brief description of the drawings
Fig. 1 is a kind of structural representation of instrument for investigating common-rail injector high pressure leakage failure described in the utility model
Figure.
In figure：1. calibration tool module, 2. data wire, 3. high-pressure drain plug, 4. flowmeter, 5. transit joint, 6. fuel tank, 7.
Coarse filter, 8. fine cleaner, 9. high-pressure oil pump, 10. high pressure oil rail, 11. common-rail injectors, 12. Diesel Engine Control units.
Specific embodiment
Common rail system part connection to be detected and operation principle are described as follows：Fuel tank 6, coarse filter 7, fine cleaner 8 is by low
Compression ignition oil pipe is connected, and the oil transfer pump of high-pressure oil pump 9 is suctioned out fuel from fuel tank 6 by rotating, by coarse filter 7, the mistake of fine cleaner 8
Enter fuel feed pump plunger chamber after filter, high-pressure oil pump 9 is moved by piston reciprocation makes low-voltage fuel be changed into high pressure, by high-pressure oil pipe
(i.e. pressure accumulation) is transported in high pressure oil rail 10 and stores, the rail pressure sensor installed on oily rail is in real time to bavin motivation control unit 12
Feedback injection pressure signal, after being computed treatment, the high pressure fuel output quantity to oil pump carries out continuous control, and then to rail pressure shape
Into closed-loop control.Then, the high pressure fuel in high pressure oil rail 10 distributes to the co-rail oil injection of each cylinder of engine by high-pressure oil pipe
Device 11.Finally, bavin motivation control unit 12 is according to various sensors (position sensor, the pressure installed on engine diverse location
Force snesor, temperature sensor etc.), recognize the operating condition of engine, oil injection time needed for calculating next circulation and
Distributive value, accurately sends drive signal to the magnetic valve of fuel injector, and fuel injector magnetic system loop produces driving current, and then rings
Oil spout is answered, while oil return of oil injector flows back to fuel tank 6 by oil return pipe, the whole injection course of work is completed.
As shown in drawings, a kind of instrument for investigating common-rail injector high pressure leakage failure described in the utility model, including
Calibration tool module 1, data wire 2, flowmeter 3, high-pressure drain plug 4 and transit joint 5；
Calibration tool module 1 is connected by the Diesel Engine Control unit 12 of data wire 2 and diesel engine to be investigated, and demarcates work
Tool module 1 is used for monitoring and controlling engine operating state, can monitor the pressure with Remote electronic control common rail system and spray
Oil mass.
High-pressure drain plug 3 is accessed between the common-rail injector 11 of engine to be investigated and high pressure oil rail 10, and high-pressure drain plug 3 can
To prevent high-pressure diesel from entering common-rail injector 11 from high pressure oil rail 10；
Flowmeter 4 is connected in series on the total oil return pipe of the fuel injector of engine to be investigated by transit joint 5, and flowmeter 4 can
Measure total recirculating oil quantity of fuel injector.
Below by taking a vapour commercial car CA6DL2-35E3R diesel engines as an example, tool of the present utility model is described with reference to the accompanying drawings
Body embodiment, embodiment：
The first step, starts diesel engine, gas pedal is in maximum opening position, and vehicle is in high idle speed state, passes through
The connection Diesel Engine Control of calibration tool module 1 unit 12 monitors engine operating state, is recorded as operating mode 1：Engine speed=
N1(r/min)；Every 11 distributive values of common-rail injector=A1 (ml/st.)；Actual rail pressure=B1 (bar)；In the state of operating mode 1
Under, read total recirculating oil quantity=C1 (ml/min) of 6 common-rail injectors 11 of the display of flowmeter 4.According to CA6DL2-35E3R bavins
The model of the common-rail injector 11 that oil machine is used understands that the single injection event of common-rail injector 11 maximum recirculating oil quantity is 0.06ml/ times.
Under operating mode 1,6 common-rail injectors 11 of engine maximum recirculating oil quantity=0.06 × 3 × N1=0.18N1ml/min per minute, often
Maximum recirculating oil quantity=the 0.03N1 per minute of individual common-rail injector 11.Under operating mode 1, the total recirculating oil quantity=C1 (ml/ of actual measurement per minute
min).If (C1-0.18 × N1)/0.18 × N1 is more than 5%, illustrate there are one or more to be total in 6 common-rail injectors 11
There is high pressure leakage in rail injector 11.
Second step, the outlet that high pressure oil rail 10 is connected the common-rail injector 11 of the first cylinder using high-pressure drain plug 3 is blocked, resistance
Only high-pressure diesel enters the common-rail injector 11 of the first cylinder.Diesel engine is started, gas pedal is in maximum opening position, now
Vehicle is in high idle speed state, and the pressure of the remote control common rail system of Diesel Engine Control unit 12 is connected by calibration tool module 1
Power and distributive value, are recorded as operating mode 2：Engine speed=N2 (r/min)；Every fuel injector distributive value=A1 (ml/st)；It is actual
Rail pressure=B1 (bar), in the state of operating mode 2, reads total recirculating oil quantity of remaining 5 common-rail injector 11 of the display of flowmeter 4
=C2 (ml/min).Because operating mode 1 is identical with the distributive value of every common-rail injector 11 with the actual rail pressure of operating mode 2, often
The recirculating oil quantity of common-rail injector 11 is also identical.Under operating mode 2, total recirculating oil quantity=C2 (ml/min) per minute.According to N1, N2,
C2 can extrapolate total recirculating oil quantity C3=C2 × N1/N2 (ml/min) of remaining 5 common-rail injector 11 under operating mode 1.
3rd step, if (C1-C3-0.03N1)/0.03N1=(C1-C2 × N1/N2-0.03N1)/0.03N1 is more than
5%, illustrate that the common-rail injector 11 of the first cylinder being blocked has high pressure and reveals failure, it is necessary to change.Otherwise illustrate to be blocked
The first cylinder common-rail injector 11 it is working properly, without change.
High-pressure drain plug 3 in second step need to be only respectively connected to remaining 5 cylinder by the 4th step, the operating procedure more than
In each cylinder common-rail injector 11 and corresponding high pressure oil rail 10 between, other step operation methods are identical, you can to sentence
Break and the failure that remaining 5 common-rail injector of cylinder 11 is revealed with the presence or absence of high pressure, if need to change.
Claims (1)
1. it is a kind of to investigate the instrument that common-rail injector high pressure reveals failure, it is characterised in that including calibration tool module (1), number
According to line (2), high-pressure drain plug (3), flowmeter (4) and transit joint (5)；
Calibration tool module (1) is connected by data wire (2) and Diesel Engine Control unit (12) to be investigated, calibration tool module
(1) for monitoring and control engine operating state；
High-pressure drain plug (3) is accessed between the common-rail injector (11) of diesel engine to be investigated and high pressure oil rail (10), high-pressure drain plug
(3) high-pressure diesel can be prevented to enter common-rail injector (11) from high pressure oil rail (10)；
Flowmeter (4) is connected in series on the total oil return pipe of the fuel injector of diesel engine to be investigated by transit joint (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621138764.8U CN206221124U (en) | 2016-10-20 | 2016-10-20 | It is a kind of to investigate the instrument that common-rail injector high pressure reveals failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621138764.8U CN206221124U (en) | 2016-10-20 | 2016-10-20 | It is a kind of to investigate the instrument that common-rail injector high pressure reveals failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206221124U true CN206221124U (en) | 2017-06-06 |
Family
ID=58788245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621138764.8U Expired - Fee Related CN206221124U (en) | 2016-10-20 | 2016-10-20 | It is a kind of to investigate the instrument that common-rail injector high pressure reveals failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206221124U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533435A (en) * | 2018-06-19 | 2018-09-14 | 潍柴动力股份有限公司 | A kind of high pressure co-rail system and high-pressure oil pump diagnostic method and device |
| CN112729850A (en) * | 2020-11-16 | 2021-04-30 | 苏州好易修信息科技有限公司 | High-pressure common rail intelligent test tool |
| CN113514250A (en) * | 2021-06-25 | 2021-10-19 | 一汽解放汽车有限公司 | Oil injector diagnosis method and device, computer equipment and storage medium |
| CN114151258A (en) * | 2021-12-08 | 2022-03-08 | 一汽解放汽车有限公司 | Oil injector oil return fault diagnosis method, fuel system and internal combustion engine |
| CN117571235A (en) * | 2024-01-15 | 2024-02-20 | 长春市阿尔科达科技有限公司 | High-pressure oil rail seal test system |
-
2016
- 2016-10-20 CN CN201621138764.8U patent/CN206221124U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533435A (en) * | 2018-06-19 | 2018-09-14 | 潍柴动力股份有限公司 | A kind of high pressure co-rail system and high-pressure oil pump diagnostic method and device |
| CN112729850A (en) * | 2020-11-16 | 2021-04-30 | 苏州好易修信息科技有限公司 | High-pressure common rail intelligent test tool |
| CN112729850B (en) * | 2020-11-16 | 2023-01-13 | 苏州好易修信息科技有限公司 | High-pressure common rail intelligent test tool |
| CN113514250A (en) * | 2021-06-25 | 2021-10-19 | 一汽解放汽车有限公司 | Oil injector diagnosis method and device, computer equipment and storage medium |
| CN114151258A (en) * | 2021-12-08 | 2022-03-08 | 一汽解放汽车有限公司 | Oil injector oil return fault diagnosis method, fuel system and internal combustion engine |
| CN117571235A (en) * | 2024-01-15 | 2024-02-20 | 长春市阿尔科达科技有限公司 | High-pressure oil rail seal test system |
| CN117571235B (en) * | 2024-01-15 | 2024-03-22 | 长春市阿尔科达科技有限公司 | High-pressure oil rail seal test system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20201020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |