CN105840380A - Detecting and judging method for leakproofness of oil injector - Google Patents
Detecting and judging method for leakproofness of oil injector Download PDFInfo
- Publication number
- CN105840380A CN105840380A CN201610134239.7A CN201610134239A CN105840380A CN 105840380 A CN105840380 A CN 105840380A CN 201610134239 A CN201610134239 A CN 201610134239A CN 105840380 A CN105840380 A CN 105840380A
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- CN
- China
- Prior art keywords
- fuel injector
- oil
- oil injector
- detecting
- fault
- Prior art date
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/006—Measuring or detecting fuel leakage of fuel injection apparatus
Abstract
The invention discloses a detecting and judging method for the leakproofness of an oil injector. The detecting and judging method comprises the following steps that firstly, the faulted oil injector is dismounted from a cylinder head and is connected with a high-pressure oil pipe of a corresponding cylinder and an oil pump; then, an oil injector nozzle of the faulted oil injector is led to an oil barrel through a pipeline; and finally, an engine is started, the rotating speed and load are increased to accord with reliability test working conditions, the engine operates continuously, and the fuel oil leaking portion of the faulted oil injector is observed in the operation process. According to the detecting and judging method for the leakproofness of the oil injector, the oil injector is externally hung on the engine, the engine automatically operates to replace an operating rod of manual operating equipment, the actual working status and working time of the oil injector are simulated, whether the oil injector leaks or not can be accurately judged on site, and the detecting accuracy is high. Meanwhile, the time of sending the oil injector back to a factory is saved, and the detecting efficiency is high.
Description
Technical field
The present invention relates to the sealing propertytest field of fuel injector, particularly to the inspection of a kind of fuel injector sealing
Survey decision method.
Background technology
When suspect fuel injector is poorly sealed diesel oil seepage occurs time, for making fault recurrence and finding seepage place,
Generally according to Q/YC 751.3-2004 fuel injector inspection specification, fault fuel injector carried out assembly sealing inspection
Survey, will be installed on fuel injector detection stand carry out observing each sealing when opening pressure detecting by fuel injector
Position whether seepage.
Fuel injector needs to be installed on special detection platform, needs artificial repeatable operation stick during detection, by
The duty that fuel injector is actual cannot be simulated, particularly with seepage not in operation beat and persistent period
Significantly fuel injector, takes above detection method detected at all can not test actual seal.Such as recent one
, there is certain cylinder injector seepage diesel oil, for making fault recurrence during running long duration test in platform 6T electromotor
Find out seepage place, survey limit by existing method frontier inspection and observe again without finding seepage place, cause majority
People thinks that fuel injector is normal.
The information being disclosed in this background section is merely intended to increase the reason of the general background to the present invention
Solve, and be not construed as recognizing or imply in any form that this information structure is for this area general technology
Prior art well known to personnel.
Summary of the invention
It is an object of the invention to provide the detection judgement side of the fuel injector sealing of a kind of simple and reasonable steps
Method, the detection decision method of this fuel injector sealing is by by plug-in for fuel injector electromotor, utilizing electromotor
Automatically operating replaces the action bars on manual operation equipment, simulates the actual duty of fuel injector and work
Making the time, fuel injector has ne-leakage scene just can precisely judge, accuracy of detection is high.Reduce oil spout simultaneously
Qi Hui factory required time, detection efficiency is high.
For achieving the above object, according to the invention provides the detection decision method of a kind of fuel injector sealing,
Comprise the following steps: first, fault fuel injector is pulled down from cylinder head, with the high-pressure oil pipe of respective cylinder
And oil pump connects；Then, by pipeline, the fuel injector mouth of fault fuel injector is caused oil drum；Finally, rise
Dynamic electromotor, raising rotating speed and load, to reliability test operating mode continuous service, are observed in running
The position of fault fuel injector seepage diesel oil.
Preferably, in technique scheme, pipeline is sebific duct.
Preferably, in technique scheme, the cylindrical of fuel injector mouth is entangled in one end of sebific duct, and the other end draws
To oil drum.
Preferably, in technique scheme, fault fuel injector is automatically controlled Four valve fuel injector, and electromotor rises
Before dynamic detection, this fault fuel injector is connected power supply with power line.
Compared with prior art, there is advantages that the detection of this fuel injector sealing is sentenced
Method of determining, by by plug-in for fuel injector electromotor, utilizes electromotor automatically to operate on replacement manual operation equipment
Action bars, simulate the actual duty of fuel injector and working time, fuel injector has ne-leakage on-the-spot
Just can precisely judge, accuracy of detection is high.Reducing fuel injector simultaneously and return factory's required time, detection efficiency is high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the detection decision method of the fuel injector sealing of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in detail, it is to be understood that this
The protection domain of invention is not limited by detailed description of the invention.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " bag
Include " or its conversion as " comprising " or " including " etc. will be understood to comprise stated element or
Ingredient, and do not get rid of other element or other ingredient.
The detection decision method of the fuel injector sealing according to the specific embodiment of the invention is by spraying fault
Oil device is pulled down from cylinder head, the high-pressure oil pipe (note: for automatically controlled Four valve oil spout of respective cylinder in connection
Device also needs fuel injector clamping device line of connecting with the mains) and oil pump, allow fuel injector be suspended in the air, use glue
Pipe box firmly fuel injector mouth cylindrical also causes oil drum.Improve rotating speed and load after starting electromotor to try to reliability
Test operating mode continuous service, running is observed fuel injector seepage diesel oil position.
As it is shown in figure 1, the concrete steps of the detection decision method of this fuel injector sealing include:
First, fault fuel injector 2 is pulled down from cylinder head, connect with high-pressure oil pipe and the oil pump of respective cylinder
Connect；
The high-pressure oil pipe 1 that fault fuel injector is pulled down with respective cylinder from cylinder head is connected rear-mounted aloft,
The plug-in electromotor of fault fuel injector that will be to be detected.Note: oil spout is also needed for automatically controlled Four valve fuel injector
Device clamping device line of connecting with the mains.
Then, entangle the cylindrical 3 of fuel injector mouth with one end of sebific duct 4, caused by the other end of sebific duct 4
Oil drum 5；
Finally, start electromotor, improve rotating speed and load to reliability test operating mode continuous service, fortune
Fuel injector seepage diesel oil position is observed during row.
As long as the genuine leakage of oil of fuel injector, take this approach to detect and draw.Such as example from above
6T fuel injector take this method continuous service to be just found that the diesel oil pressure from this fuel injector by the 2nd hour
Tight cap oozes out.If not using this innovative approach, leakage of oil verity cannot confirm.
To sum up, the detection decision method of this fuel injector sealing, by by plug-in for fuel injector electromotor, utilizes
Electromotor operates the action bars replaced on manual operation equipment automatically, simulates the work shape that fuel injector is actual
State and working time, fuel injector has ne-leakage scene just can precisely judge, accuracy of detection is high.Subtract simultaneously
Few fuel injector returns factory's required time, and detection efficiency is high.
The aforementioned description to the specific illustrative embodiment of the present invention illustrates that and the purpose of illustration.
These descriptions are not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned
Teaching, can much change and change.The purpose selected exemplary embodiment and describe exists
In explaining the certain principles of the present invention and actual application thereof, so that those skilled in the art can be real
Now and utilize the various different exemplary of the present invention and various different selection and change.
The scope of the present invention is intended to be limited by claims and equivalents thereof.
Claims (4)
1. the detection decision method of a fuel injector sealing, it is characterised in that comprise the following steps:
First, fault fuel injector is pulled down from cylinder head, be connected with high-pressure oil pipe and the oil pump of respective cylinder；
Then, by pipeline, the fuel injector mouth of fault fuel injector is caused oil drum；
Finally, start electromotor, improve rotating speed and load to reliability test operating mode continuous service, fortune
The position of fault fuel injector seepage diesel oil is observed during row.
The detection decision method of fuel injector sealing the most according to claim 1, it is characterised in that
Described pipeline is sebific duct.
The detection decision method of fuel injector sealing the most according to claim 2, it is characterised in that
The cylindrical of fuel injector mouth is entangled in one end of described sebific duct, and the other end causes oil drum.
The detection decision method of fuel injector sealing the most according to claim 1, it is characterised in that
Described fault fuel injector is automatically controlled Four valve fuel injector, electromotor start detection before, this fault fuel injector with
Power line connects power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134239.7A CN105840380A (en) | 2016-03-09 | 2016-03-09 | Detecting and judging method for leakproofness of oil injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134239.7A CN105840380A (en) | 2016-03-09 | 2016-03-09 | Detecting and judging method for leakproofness of oil injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105840380A true CN105840380A (en) | 2016-08-10 |
Family
ID=56587036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610134239.7A Pending CN105840380A (en) | 2016-03-09 | 2016-03-09 | Detecting and judging method for leakproofness of oil injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105840380A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275529A (en) * | 2008-03-25 | 2008-10-01 | 宋玉堂 | Test table for oil injector of marine diesel and fuel injector test methods |
| CN201193581Y (en) * | 2008-03-25 | 2009-02-11 | 宋玉堂 | Injector testing equipment for marine diesel |
| DE102008041537A1 (en) * | 2008-08-26 | 2010-03-04 | Robert Bosch Gmbh | Method for testing leak tightness of fuel injector of internal combustion engine, has operating internal combustion engine in preset operating condition based on comparison of signal from measuring sensor with preset reference ranges |
| CN103868659A (en) * | 2013-12-31 | 2014-06-18 | 广西玉柴机器股份有限公司 | Leakage testing method for sealing property of cylinder cover oil atomizer copper bush |
-
2016
- 2016-03-09 CN CN201610134239.7A patent/CN105840380A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275529A (en) * | 2008-03-25 | 2008-10-01 | 宋玉堂 | Test table for oil injector of marine diesel and fuel injector test methods |
| CN201193581Y (en) * | 2008-03-25 | 2009-02-11 | 宋玉堂 | Injector testing equipment for marine diesel |
| DE102008041537A1 (en) * | 2008-08-26 | 2010-03-04 | Robert Bosch Gmbh | Method for testing leak tightness of fuel injector of internal combustion engine, has operating internal combustion engine in preset operating condition based on comparison of signal from measuring sensor with preset reference ranges |
| CN103868659A (en) * | 2013-12-31 | 2014-06-18 | 广西玉柴机器股份有限公司 | Leakage testing method for sealing property of cylinder cover oil atomizer copper bush |
Non-Patent Citations (1)
| Title |
|---|
| 刘福华 刘良: "《发动机电控系统检修》", 30 September 2015, 机械工业出版社 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |