CN105699086A - Reproduction and verification method for cavitation fault on surface of cylinder liner - Google Patents
Reproduction and verification method for cavitation fault on surface of cylinder liner Download PDFInfo
- Publication number
- CN105699086A CN105699086A CN201610134228.9A CN201610134228A CN105699086A CN 105699086 A CN105699086 A CN 105699086A CN 201610134228 A CN201610134228 A CN 201610134228A CN 105699086 A CN105699086 A CN 105699086A
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- China
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- verification method
- cylinder
- cylinder liner
- cavitation pitting
- reproduction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
Abstract
The present invention discloses a reproduction and verification method for a cavitation fault on the surface of a cylinder liner. According to the technical scheme of the method, the compressed air is fed into a pipeline connected with the water pump inlet of an engine with an improved cylinder liner. Meanwhile, the temperature of the cooling water is controlled at the highest level. Moreover, a five-condition reliability test is continuously conducted on a rack. By adopting the reproduction and verification method for the cavitation fault on the surface of the cylinder liner, the compressed air is fed into the pipeline connected with the water pump inlet of the engine with the improved cylinder liner, and the temperature of the cooling water is controlled at the highest level. In this way, based on the cavitation generation mechanism (namely, air bubbles explode in small gaps on the outer surface of the cylinder liner), the five-condition reliability test is continuously conducted on the rack. Therefore, the verification period of the cavitation-resisting durability of the cylinder liner is greatly shortened.
Description
Technical field
The present invention relates to engine failure detection field, particularly to the reproduction verification method of a kind of cylinder-barrel surface cavitation pitting fault。
Background technology
According to statistics, there is cavitation pitting fault in wet liner outer surface after running to certain mileage, time serious, cavitation pitting also occurs in cylinder block region of interest, causes cooling water Liu Dao oil sump, it has to scrap body。For solving these faults, cylinder jacket outer surface is carried out coating process by design department and structural design is improved, but in order to verify that whether improvement project is effective, do up to (medium-sized and heavy 1000 hours) five anti-cavitation pitting endurancings of operating mode cylinder jacket in 600 hours as it is shown in figure 1, generally cylinder jacket carried out installation according to " Q/YC3037 2,005 5 operating mode and cylinder jacket anti-cavitation pitting endurancing specification (cycle period is 15 minutes) " dry run mileage。Or directly install to, by improving cylinder jacket, the runtime verification carrying out identical mileage on marketing users machine。
The shortcoming of prior art:
The electromotor distance travelled of 1, market feedback cylinder jacket outer surface cavitation pitting is all longer, generally it is above 100,000 kilometers, therefore the reliability demonstration that dry run mileage carries out stand 600 hours (middle heavy-duty machine 1000 hours), because proving period is oversize, cause the fault can not closed loop on time。
2, directly installing to, by improving cylinder jacket, the runtime verification carrying out identical mileage on marketing users machine, because the proving time is oversize, whether scheme effectively needs permanent wait, causes the fault can not closed loop on time。
It is disclosed in the information of this background section and is merely intended to increase the understanding of the general background to the present invention, and be not construed as admitting or imply in any form that this information structure is for prior art that persons skilled in the art are known。
Summary of the invention
It is an object of the invention to provide the reproduction verification method of the cylinder-barrel surface cavitation pitting fault of a kind of simple and reasonable steps, the reproduction verification method of this cylinder-barrel surface cavitation pitting fault is by passing into compression air equipped with engine water pump inlet adapter place improving cylinder sleeve, and by cooling water temperature by the highest control, namely cavitation pitting mechanism of production (bubble explodes in cylinder jacket outer surface small-gap suture) 200 hours five operating mode reliability tests of continuous service on stand are utilized so that the proving period of the anti-cavitation pitting durability of cylinder jacket is greatly shortened。
For achieving the above object, according to the reproduction verification method that the invention provides a kind of cylinder-barrel surface cavitation pitting fault, the reproduction verification method of this cylinder-barrel surface cavitation pitting fault is by passing into compression air in pump entrance adapter place equipped with the electromotor improving cylinder sleeve, and by cooling water temperature by the highest control, and on stand continuous service five operating mode reliability test。
Preferably, in technique scheme, compressed-air actuated pressure is 1.0bar。
Preferably, in technique scheme, electromotor is continuous service 200 hours on stand。
Preferably, in technique scheme, electromotor continuous service five operating modes of 200 hours on stand refer to: parking, idling, speed at maximum torque, rated speed and most high altitude vehicle rotating speed。
Compared with prior art, what there is advantages that this cylinder-barrel surface cavitation pitting fault reappears verification method by passing into compression air equipped with engine water pump inlet adapter place improving cylinder sleeve, and by cooling water temperature by the highest control, namely cavitation pitting mechanism of production (bubble explodes in cylinder jacket outer surface small-gap suture) 200 hours five operating mode reliability tests of continuous service on stand are utilized so that the proving period of the anti-cavitation pitting durability of cylinder jacket is greatly shortened。
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the anti-cavitation pitting endurancing specification of existing cylinder jacket。
Detailed description of the invention
Below the specific embodiment of the present invention is described in detail, it is to be understood that protection scope of the present invention is not by the restriction of detailed description of the invention。
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " includes " or its conversion will be understood to comprise the element or ingredient stated at such as " comprising " or " including " etc., and does not get rid of other element or other ingredient。
The reproduction verification method of the cylinder-barrel surface cavitation pitting fault according to the specific embodiment of the invention utilizes cavitation pitting mechanism of production (bubble explodes in cylinder jacket outer surface small-gap suture) continuous service five operating mode reliability test on stand so that the proving period of the anti-cavitation pitting durability of cylinder jacket is greatly shortened。
Specifically, the reproduction verification method of this cylinder-barrel surface cavitation pitting fault is by the compression air passing into 1.0bar equipped with engine water pump inlet adapter place improving cylinder sleeve, and by cooling water temperature by the highest control (as long as not boiling), 200 hours five operating mode reliability tests of continuous service on stand。Namely cavitation pitting mechanism of production is utilized---bubble explodes in cylinder jacket outer surface small-gap suture。
On stand, continuous service five operating modes of 200 hours refer to: parking, idling, speed at maximum torque, rated speed and most high altitude vehicle rotating speed。
Finding through the checking of multiple stage time, within 200 hours, get off the cavitation pitting occurred on its surface in various degree to improving invalid cylinder jacket with this verification method, with by specification or to look for the long verification the verifying results of user be the same, proving period is greatly shortened。
To sum up, the reproduction verification method of this cylinder-barrel surface cavitation pitting fault is by passing into compression air equipped with engine water pump inlet adapter place improving cylinder sleeve, and by cooling water temperature by the highest control, namely cavitation pitting mechanism of production (bubble explodes in cylinder jacket outer surface small-gap suture) 200 hours five operating mode reliability tests of continuous service on stand are utilized so that the proving period of the anti-cavitation pitting durability of cylinder jacket is greatly shortened。
The aforementioned description to the specific illustrative embodiment of the present invention illustrates that and the purpose of illustration。These describe and are not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned instruction, it is possible to carry out much changing and change。Purpose exemplary embodiment selected and describe is in that to explain the certain principles of the present invention and practical application thereof, so that those skilled in the art is capable of and utilizes 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 reproduction verification method of a cylinder-barrel surface cavitation pitting fault, it is characterized in that, the reproduction verification method of this cylinder-barrel surface cavitation pitting fault is by passing into compression air in pump entrance adapter place equipped with the electromotor improving cylinder sleeve, and by cooling water temperature by the highest control, and on stand continuous service five operating mode reliability test。
2. the reproduction verification method of cylinder-barrel surface cavitation pitting fault according to claim 1, it is characterised in that described compressed-air actuated pressure is 1.0bar。
3. the reproduction verification method of cylinder-barrel surface cavitation pitting fault according to claim 2, it is characterised in that described electromotor is continuous service 200 hours on stand。
4. the reproduction verification method of cylinder-barrel surface cavitation pitting fault according to claim 3, it is characterised in that described electromotor continuous service five operating modes of 200 hours on stand refer to: parking, idling, speed at maximum torque, rated speed and most high altitude vehicle rotating speed。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134228.9A CN105699086A (en) | 2016-03-09 | 2016-03-09 | Reproduction and verification method for cavitation fault on surface of cylinder liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134228.9A CN105699086A (en) | 2016-03-09 | 2016-03-09 | Reproduction and verification method for cavitation fault on surface of cylinder liner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105699086A true CN105699086A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610134228.9A Pending CN105699086A (en) | 2016-03-09 | 2016-03-09 | Reproduction and verification method for cavitation fault on surface of cylinder liner |
Country Status (1)
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| CN (1) | CN105699086A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318253A (en) * | 2018-02-07 | 2018-07-24 | 安徽华菱汽车有限公司 | A kind of the cavitation pitting detection device and method of cylinder jacket |
| CN109540718A (en) * | 2018-12-03 | 2019-03-29 | 潍柴动力股份有限公司 | A kind of experimental rig of dry seed |
Citations (4)
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| KR20030023026A (en) * | 2001-09-11 | 2003-03-19 | 현대자동차주식회사 | Measuring system of cylinder lifting |
| CN202795080U (en) * | 2012-08-10 | 2013-03-13 | 中国人民解放军总后勤部油料研究所 | Engine cooling liquid vibration resistance cavitation erosion test temperature control device |
| CN103759926A (en) * | 2013-12-12 | 2014-04-30 | 中国北方发动机研究所(天津) | Cylinder sleeve fatigue test device |
| CN103822762A (en) * | 2014-02-21 | 2014-05-28 | 中国第一汽车股份有限公司 | Heavy-duty diesel engine cylinder body water jacket leakage detection process |
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2016
- 2016-03-09 CN CN201610134228.9A patent/CN105699086A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030023026A (en) * | 2001-09-11 | 2003-03-19 | 현대자동차주식회사 | Measuring system of cylinder lifting |
| CN202795080U (en) * | 2012-08-10 | 2013-03-13 | 中国人民解放军总后勤部油料研究所 | Engine cooling liquid vibration resistance cavitation erosion test temperature control device |
| CN103759926A (en) * | 2013-12-12 | 2014-04-30 | 中国北方发动机研究所(天津) | Cylinder sleeve fatigue test device |
| CN103822762A (en) * | 2014-02-21 | 2014-05-28 | 中国第一汽车股份有限公司 | Heavy-duty diesel engine cylinder body water jacket leakage detection process |
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| HANS等: "柴油机气缸套的穴蚀和腐蚀", 《车用发动机》 * |
| 支剑锋: "柴油发动机气缸套穴蚀现象研究", 《煤矿机电》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318253A (en) * | 2018-02-07 | 2018-07-24 | 安徽华菱汽车有限公司 | A kind of the cavitation pitting detection device and method of cylinder jacket |
| CN109540718A (en) * | 2018-12-03 | 2019-03-29 | 潍柴动力股份有限公司 | A kind of experimental rig of dry seed |
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Application publication date: 20160622 |