CN105443292A - Internal leakage detection method of fuel injection pump - Google Patents
Internal leakage detection method of fuel injection pump Download PDFInfo
- Publication number
- CN105443292A CN105443292A CN201511018561.5A CN201511018561A CN105443292A CN 105443292 A CN105443292 A CN 105443292A CN 201511018561 A CN201511018561 A CN 201511018561A CN 105443292 A CN105443292 A CN 105443292A
- Authority
- CN
- China
- Prior art keywords
- injection pump
- detection method
- leakage detection
- pump
- fuel injection
- 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.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 49
- 239000007924 injection Substances 0.000 title claims abstract description 49
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 239000000446 fuel Substances 0.000 title abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 19
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses an internal leakage detection method of a fuel injection pump. The internal leakage detection method comprises the following steps: an indicating agent is added in a pump cavity of the fuel injection pump; a sensor is used for detecting the concentration change of the indicating agent added in the pump cavity; and the concentration change value detected by the sensor is displayed in real time, and is observed to judge if the internal of the fuel injection pump leaks. The internal leakage detection method can monitor if the internal of the pump cavity of the fuel injection pump leaks in real time, and guarantees the engine test data accuracy and the rack operating ratio.
Description
Technical field
The present invention relates to the test field of diesel engine, particularly a kind of inner leakage detection method of Injection Pump.
Background technique
The combustion process of diesel engine determines the property indices of diesel engine to a great extent, and for diesel engine combustion, rationalization is the fundamental way improving diesel engine combination property, and the injection system of the combustion process of diesel engine and diesel engine is closely related.And the interior leakage of Injection Pump not only can affect the reliability of Injection Pump body, the penalty of diesel engine can be caused simultaneously.The generation reducing or avoid interior leakage situation in two ways mainly adopted by Injection Pump.1. on injection pump plunger, install multiple-sealed circle additional, prevent diesel oil from being flowed in pump chamber by the gap between plunger and the pump housing and cause interior leakage; 2. by installing spill port additional on the pump housing, drainage process being carried out to the diesel oil flowed out, preventing the diesel oil flowed out from entering in pump chamber.
At present, the oil pump for a certain model is mainly taked to carry out interior leakage testing experiment for the problem of leaking in Injection Pump.During testing experiment, school pump oil is adopted to test, usually, phosphor is installed additional in the pump oil of school, whether Injection Pump carries out the continuous running under different operating mode on test stand, finally tests the machine oil in the pump chamber of Injection Pump, observe and have phosphor qualified to judge whether.
For when leaking problem in the Injection Pump of a certain model or a certain batch, Injection Pump can be placed on separately on Fuel Injection Pump Test-Bed and test, but, cannot leak in the Injection Pump monitoring of the motor just run on stand at present, can only judge according to the abnormal conditions of engine performance feedback, so just cause the waste of the inaccurate of test data and test resource.Simultaneously, although Injection Pump can carry out interior leakage test on Fuel Injection Pump Test-Bed, interior leakage is there is not through test after a while yet, but for the Injection Pump installed on the engine, working time cannot be estimated, running environment cannot be simulated, current technical specifications cannot directly judge, thus cause technician whether cannot occur interior leakage by judgement Injection Pump accurately and timely, only have and engine shutdown is come, machine oil in Injection Pump pump chamber is released and carries out concentration determination, wait for that test result just can judge.So problems can cause the delay of test progress and the decline of bench run rate, even has a large amount of repetitive operation.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of inner leakage detection method of Injection Pump, the detector whether Injection Pump pump chamber inside interior leakage occurs can be monitored in real time, ensure the accuracy of engine test data and the operation ratio of stand.
For achieving the above object, the invention provides a kind of inner leakage detection method of Injection Pump, comprise the steps: to add indicator in the pump chamber of Injection Pump; The change in concentration of the indicator added in pump chamber is detected with sensor; And the change in concentration value to be detected by sensor shows in real time, judge to leak in whether Injection Pump by observing change in concentration value.
Preferably, by display instrument, change in concentration value is shown in real time.
Preferably, display instrument is attached on threst stand.
Compared with prior art, the present invention has following beneficial effect: confirm whether Injection Pump the degree of interior leakage and interior leakage occurs by the feedback of concentration of indicator and sensor, and which can feed back the problem of Injection Pump accurately, timely.Wherein display instrument can be implemented to enter monitoring in real time, and can the function of instrument be attached in threst stand function plate, warning function can be installed additional simultaneously, so not only do not need to increase extra configuration, a kind of order ground of automatic monitoring can be reached simultaneously, structure is simple, practical, and with low cost.
Accompanying drawing explanation
Fig. 1 is according to the device connection diagram in the inner leakage detection method of Injection Pump of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
According to the inner leakage detection method of a kind of Injection Pump of the specific embodiment of the invention, comprise the steps:
The first step, adds indicator in the pump chamber of Injection Pump;
Second step, detects the change in concentration of the indicator added in pump chamber with sensor; And
3rd step, the change in concentration value detected by sensor shows in real time, judges the whether interior leakage of Injection Pump by observing change in concentration value.
As a kind of preferred embodiment, by display instrument, change in concentration value is shown in real time.
As a kind of preferred embodiment, display instrument is attached on threst stand.
In such scheme, judge whether Injection Pump the situation of interior leakage or interior leakage aggravation occurs by detecting the concentration of indicator in Injection Pump pump chamber in real time, thus affect the performance of motor.See Fig. 1, the device realizing the method comprises altogether sensor 1 and display instrument 2, when detecting, a certain amount of indicator is added in the pump chamber of Injection Pump, guarantee that concentration is suitable, when leaking in Injection Pump pump chamber occurs, the concentration of indicator can change, and the change of concentration can be detected by the sensor of pump chamber, when change in concentration is to critical condition, can assert now affected motor power character, Economy or even discharge.This programme improve the validity of engine test data and bench run efficient, the engine data gathered is avoided to be obtain when oil pump performance worsens, when the concentration of instrument display does not meet test requirements document, test can be stopped, check that leakage seriously causes engine performance deterioration in Injection Pump whether, and then take effective measures and process.
The inner leakage detection method of the Injection Pump of the present embodiment, ensure that experimental technique personnel can monitor the situation of leaking in oil pump in real time, guarantees the validity of image data.By display instrument 2 display density, the time that motor is stagnated can be reduced greatly, in the process that motor runs, just can judge whether to there is fault.Further, sensor detects the control strategy of concentration of indicator, can reduce the workload of time and the test work detecting pump chamber inner engine oil concentration.
To sum up, the inner leakage detection method of the Injection Pump of the present embodiment, the feedback mainly through concentration of indicator and sensor confirms whether Injection Pump the degree of interior leakage and interior leakage occurs, and which can feed back the problem of Injection Pump accurately, timely.Wherein display instrument 2 can be implemented to enter monitoring in real time, and can the function of instrument be attached in threst stand function plate, warning function can be installed additional simultaneously, so not only do not need to increase extra configuration, a kind of order ground of automatic monitoring can be reached simultaneously, structure is simple, practical, and with low cost.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (3)
1. an inner leakage detection method for Injection Pump, is characterized in that, comprises the steps:
Indicator is added in the pump chamber of Injection Pump;
The change in concentration of the indicator added in described pump chamber is detected with sensor; And
The change in concentration value detected by described sensor shows in real time, judges the whether interior leakage of described Injection Pump by observing described change in concentration value.
2. the inner leakage detection method of Injection Pump according to claim 1, is characterized in that, is shown in real time described change in concentration value by display instrument.
3. the inner leakage detection method of Injection Pump according to claim 2, is characterized in that, described display instrument is attached on threst stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018561.5A CN105443292A (en) | 2015-12-30 | 2015-12-30 | Internal leakage detection method of fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018561.5A CN105443292A (en) | 2015-12-30 | 2015-12-30 | Internal leakage detection method of fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105443292A true CN105443292A (en) | 2016-03-30 |
Family
ID=55553849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511018561.5A Pending CN105443292A (en) | 2015-12-30 | 2015-12-30 | Internal leakage detection method of fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443292A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282951A (en) * | 2020-10-29 | 2021-01-29 | 潍柴动力股份有限公司 | Injection valve processing method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1784594A (en) * | 2003-03-06 | 2006-06-07 | 辛辛那提测试系统公司 | Method and apparatus for detecting gas |
| CN103498744A (en) * | 2013-08-30 | 2014-01-08 | 广西玉柴机器股份有限公司 | Engine injection pump inner leakage detection method |
| US20140260549A1 (en) * | 2013-03-15 | 2014-09-18 | Ford Global Technologies, Llc | Fuel system leak detection using passive valves |
| CN104977141A (en) * | 2015-07-06 | 2015-10-14 | 中国第一汽车股份有限公司 | Method for detecting overall engine leakage of diesel engine |
-
2015
- 2015-12-30 CN CN201511018561.5A patent/CN105443292A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1784594A (en) * | 2003-03-06 | 2006-06-07 | 辛辛那提测试系统公司 | Method and apparatus for detecting gas |
| US20140260549A1 (en) * | 2013-03-15 | 2014-09-18 | Ford Global Technologies, Llc | Fuel system leak detection using passive valves |
| CN103498744A (en) * | 2013-08-30 | 2014-01-08 | 广西玉柴机器股份有限公司 | Engine injection pump inner leakage detection method |
| CN104977141A (en) * | 2015-07-06 | 2015-10-14 | 中国第一汽车股份有限公司 | Method for detecting overall engine leakage of diesel engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282951A (en) * | 2020-10-29 | 2021-01-29 | 潍柴动力股份有限公司 | Injection valve processing method and device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
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| RJ01 | Rejection of invention patent application after publication |