CN203374409U - Structure for troubleshooting blocking fault of coarse strainer of common rail system - Google Patents
Structure for troubleshooting blocking fault of coarse strainer of common rail system Download PDFInfo
- Publication number
- CN203374409U CN203374409U CN201320348442.6U CN201320348442U CN203374409U CN 203374409 U CN203374409 U CN 203374409U CN 201320348442 U CN201320348442 U CN 201320348442U CN 203374409 U CN203374409 U CN 203374409U
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- CN
- China
- Prior art keywords
- oil
- strainer
- coarse strainer
- rail system
- common rail
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a structure for troubleshooting blocking fault of a coarse strainer of a common rail system. According to the structure for troubleshooting blocking fault of the coarse strainer of the common rail system, an oil tank is connected with an oil inlet of the coarse strainer through an oil outlet pipe, a T-shaped tube is mounted between the oil tank and an oil outlet pipe of the coarse strainer, both left and right ends of the T-shaped tube are connected with the oil outlet pipe, the third end of the T-shaped tube is connected with a negative pressure gauge, an oil outlet of the coarse strainer is connected with an oil inlet of an oil delivery pump through the oil outlet pipe, a T-shaped tube is further mounted between the coarse strainer and an oil outlet pipe of the oil delivery pump, and an oil outlet of the oil delivery pump is connected with a fine filter to be further connected with a high-pressure oil pump through pipes. The structure for troubleshooting blocking fault of the coarse strainer of the common rail system can analyze the fault phenomenon effectively, determine the faulty components accurately, reduce maintenance time, and ensure that vehicles of users can run again quickly.
Description
Technical field
The utility model relates to a kind of structure that the common rail system strainer blocks fault of investigating, and belongs to the technical field of Design Technology for Diesels.
Background technique
Domestic diesel engine generally adopts the electric-controlled co-rail fuel injection system, and the fault that common rail system usually blocks due to strainer in application process causes motor can't start, be short of power, shake, even flame-out.Maintenance man's diagnostic equipments that adopt when the commercial car of maintenance electric-controlled co-rail system check the fault that car load occurs more at present, use diagnostic equipment can only judge strainer and may occur blocking, and can not accurately affirm whether strainer blocks.
Summary of the invention
The purpose of this utility model is to provide a kind of structure that the common rail system strainer blocks fault of investigating, and it is the analysis of failure phenomenon effectively, accurately judges trouble unit, shortens engineering time, guarantees that user's vehicle drops into operation fast again.
The technical solution of the utility model is achieved in that a kind of structure that the common rail system strainer blocks fault of investigating, it is characterized in that: fuel tank is connected to the strainer filler opening by fuel-displaced pipeline, between the fuel-displaced pipeline of strainer, T-shaped pipe is installed at fuel tank, two ends, T-shaped pipe left and right are connected with fuel-displaced pipeline, the 3rd end is connected with the negative pressure table, the strainer oil outlet connects on the filler opening of oil transfer pump by fuel-displaced pipeline, between the fuel-displaced pipeline of strainer and oil transfer pump, T-shaped pipe also is installed, the oil transfer pump oil outlet connects fine cleaner by pipeline and is connected with high pressure oil pump.
Described T-shaped Guan Yiduan is the internal thread transit joint, and the other end is the outside thread transit joint.
Whether good effect of the present utility model is to measure the force value that strainer is imported and exported, and calculates the Resistance Value of strainer, according to Resistance Value, judges whether strainer blocks, need to change.
The accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further: as shown in Figure 1, a kind of structure of investigating common rail system strainer obstruction fault, it is characterized in that: fuel tank 1 connects strainer 2 filler openings by fuel-displaced pipeline 4, to between the fuel-displaced pipeline 4 of strainer 2, T-shaped pipe 3 is installed at fuel tank 1, T-shaped pipe 3 two ends, left and right are connected with fuel-displaced pipeline 4, the 3rd end is connected with negative pressure table 5, strainer 2 oil outlets connect on the filler opening of oil transfer pump 6 by fuel-displaced pipeline 4, T-shaped pipe 3 also is installed between the fuel-displaced pipeline 4 of strainer 2 and oil transfer pump 6, oil transfer pump 6 oil outlets connect fine cleaner 7 by pipeline and are connected with high pressure oil pump 8.
Described T-shaped pipe 3 one ends are the internal thread transit joint, and the other end is the outside thread transit joint.
As shown in Figure 1, an end of T-shaped pipe 3 connects the internal thread transit joint, and an end connects the outside thread transit joint, and the 3rd end connects negative pressure table 5, is combined into means of pressure measurement.During work: before measuring tool is accessed to strainer 2, ato unit is measured this point pressure value; Then, after measuring tool being accessed to strainer 2, ato unit is measured this point pressure value.When the Resistance Value of strainer 2 (both inlet and outlet pressure was poor) is (50～100) kPa, illustrate that this strainer 2 has blocked, arrive working life, the strainer 2 that need to more renew.
Claims (2)
1. investigate the structure that the common rail system strainer blocks fault for one kind, it is characterized in that: fuel tank is connected to the strainer filler opening by fuel-displaced pipeline, between the fuel-displaced pipeline of strainer, T-shaped pipe is installed at fuel tank, two ends, T-shaped pipe left and right are connected with fuel-displaced pipeline, the 3rd end is connected with the negative pressure table, the strainer oil outlet connects on the filler opening of oil transfer pump by fuel-displaced pipeline, between the fuel-displaced pipeline of strainer and oil transfer pump, T-shaped pipe also is installed, the oil transfer pump oil outlet connects fine cleaner by pipeline and is connected with high pressure oil pump.
2. a kind of structure that the common rail system strainer blocks fault of investigating according to claim 1, is characterized in that described T-shaped Guan Yiduan is the internal thread transit joint, and the other end is the outside thread transit joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320348442.6U CN203374409U (en) | 2013-06-18 | 2013-06-18 | Structure for troubleshooting blocking fault of coarse strainer of common rail system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320348442.6U CN203374409U (en) | 2013-06-18 | 2013-06-18 | Structure for troubleshooting blocking fault of coarse strainer of common rail system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374409U true CN203374409U (en) | 2014-01-01 |
Family
ID=49836941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320348442.6U Expired - Lifetime CN203374409U (en) | 2013-06-18 | 2013-06-18 | Structure for troubleshooting blocking fault of coarse strainer of common rail system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374409U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114174656A (en) * | 2019-07-30 | 2022-03-11 | 罗尔斯·罗伊斯解决方案有限公司 | Method for monitoring a fuel supply system of an internal combustion engine and internal combustion engine for carrying out such a method |
-
2013
- 2013-06-18 CN CN201320348442.6U patent/CN203374409U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114174656A (en) * | 2019-07-30 | 2022-03-11 | 罗尔斯·罗伊斯解决方案有限公司 | Method for monitoring a fuel supply system of an internal combustion engine and internal combustion engine for carrying out such a method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |
|
| CX01 | Expiry of patent term |