CN101968002A - Computer controlled locomotive diesel engine stop lubrication protection method - Google Patents
Computer controlled locomotive diesel engine stop lubrication protection method Download PDFInfo
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- CN101968002A CN101968002A CN200910012743XA CN200910012743A CN101968002A CN 101968002 A CN101968002 A CN 101968002A CN 200910012743X A CN200910012743X A CN 200910012743XA CN 200910012743 A CN200910012743 A CN 200910012743A CN 101968002 A CN101968002 A CN 101968002A
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- diesel engine
- lubricating oil
- pump contactor
- time
- shut down
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Abstract
The invention relates to a computer controlled diesel engine stop lubrication protection method. In the method, the rotation speed of a diesel engine is detected and stored; when the rotation speed of the diesel engine is less than a set stop rotation speed value, the time for supplying lubricating oil is determined according to the rotation speed condition of the diesel engine, the time of which is set before stop, so that a moving part can be lubricated. For a normal stop condition, a fuel pump contactor can be disconnected; and in an abnormal stop condition, the fuel pump contactor is not disconnected, which is convenient for finding fault reasons. Thus, manual misoperation can be avoided, damage to the moving part caused by insufficient lubrication can be avoided, and the method meets the requirements on safety, reliability and easy operation.
Description
Technical field
The invention belongs to the internal combustion locomotive technical field, relate in particular to a kind of computer control locomotive diesel engine and shut down the lubrication protection method.
Background technique
In the past at diesel engine of locomotive during normal or disorderly closedown, through regular meeting owing to driver's error is failed in time to the diesel engine supplying lubricating oil, cause the diesel engine moving element for example pressurized machine etc. damage because of insufficient lubrication.Chinese patent " internal combustion engine supercharger bearing protection device " (ZL02133503.6) detects the electromagnetism interlocking signal by testing circuit; judge the state of diesel engine; in case electromagnetism interlocking signal dead electricity assert that promptly diesel engine shuts down, bringing into operation starts the lubricating oil pump supplying lubricating oil.But, if taking place, overload waits disorderly closedown, the electromagnetism interlocking signal is dead electricity not, starts lubricating oil pump and just can not make a response.In addition, though halt instruction sends, when diesel engine speed was still higher relatively, the pressure ratio of main lubricating oil pump was higher, and the meaning of operation startup this moment lubricating oil pump is also little.Chinese patent " diesel engine of locomotive enforced lubricating automatic control method and device " (ZL 200520125009.1) judges with the tachometer value (150rpm) whether diesel engine speed is lower than a setting whether diesel engine shuts down, and has solved preferably normally and the diesel fuel lubricity problem behind the disorderly closedown.But these two kinds of technological schemes all are to adopt after shutdown fixedly that duration comes supplying lubricating oil.If diesel load is lower before shutting down, the fixing supplying lubricating oil time will be long; If diesel load is higher before shutting down, then the Gu Ding supplying lubricating oil time again can be too short.
Summary of the invention
Purpose of the present invention overcomes the deficiency of above-mentioned prior art exactly, provides a kind of computer control locomotive diesel engine easy and simple to handle, safe and reliable, that save the energy to shut down the lubrication protection method.
The object of the present invention is achieved like this:
A. system initialization;
B. detect in real time and the storage diesel engine speed;
C. if rotating speed more than or equal to shutting down setting value, returns step b; Otherwise, judge and shut down, enter next step;
D. read diesel engine and shut down the interior diesel engine speed of preceding set time, shut down supplying lubricating oil time according to this rotating speed decision;
E. if halt instruction is arranged, enter next step; Otherwise, directly enter step g;
F. disconnect the fuel pump contactor;
G. the closed lubricating oil pump contactor that starts;
H. start lubricating oil pump to diesel engine lubrication delivery and timing;
I. if the supplying lubricating oil time does not arrive, get back to step h; Otherwise, enter next step;
J. disconnect and start lubricating oil pump contactor and fuel pump contactor.
After adopting the solution of the present invention, under the situation that diesel engine is shut down, can be according to the load condition of the diesel engine before shutting down, the time of decision supplying lubricating oil, movement parts is lubricated.For the situation of orderly closedown, disconnect the fuel pump contactor.And the situation of disorderly closedown, the fuel pump contactor does not disconnect, and is convenient to search failure cause.Will avoid artificial misoperation like this, avoid the lack of lubrication of movement parts, cause damage, realize requirement safe and reliable, easy and simple to handle.
Description of drawings
Accompanying drawing 1 is the system principle schematic representation of the embodiment of the invention.
Accompanying drawing 2 is the program flow chart of the embodiment of the invention.
Embodiment
Say embodiments of the invention in conjunction with the accompanying drawings in detail.Referring to Fig. 1, the input quantity of the control unit of system mainly comprises: switching value start button, lubricating oil pump contactor feedback, fuel pump contactor feedback and stop botton etc., frequency quantity diesel engine speed; The switching value major control lubricating oil pump contactor of output, fuel pump contactor etc.Referring to Fig. 2, system enters frame 2 and detects and store diesel engine speed from frame 1 initialization.Enter frame 3 then, whether judge rotating speed, if then return frame 2 greater than 200rpm; If not, then enter frame 4.At the frame 4 default oil time 90s that skid.Be that speed drop to 200 changes the rotating speed in preceding 3 minutes before frame 5 reads shutdown.Judge that at frame 6 whether rotating speed if not, then directly enters frame 16 greater than 550rpm in 3 minutes; If, then entering frame 7, the oil time of skidding increases 20s again.Enter frame 8 then, judge that whether rotating speed if not, then directly enters frame 16 greater than 720rpm in 3 minutes; If, then entering frame 9, the oil time of skidding increases 20s again.Enter frame 10 then, judge that whether rotating speed if not, then directly enters frame 16 greater than 830 commentaries on classics in 3 minutes; If, then entering frame 11, the oil time of skidding increases 20s again.Enter frame 12 then, judge that whether rotating speed if not, then directly enters frame 16 greater than 930 commentaries on classics in 3 minutes; If, then entering frame 13, the oil time of skidding increases 20s again.Enter frame 14 then, judge that whether rotating speed if not, then directly enters frame 16 greater than 960rpm in 3 minutes; If, then entering frame 15, the oil time of skidding increases 20s again.Enter frame 16 then, judged whether halt instruction, if not, then directly enter frame 18; If, then enter frame 17, disconnect the fuel pump contactor.Enter frame 18 then, closed lubricating oil pump contactor.Enter frame 19, accumulative total is skidded the oil time.Enter frame 20, the oil time that judges whether to skid arrives, and if not, then returns frame 9; If, then enter frame 21, disconnect lubricating oil pump contactor and fuel pump contactor.Enter frame 22, EOP end of program.
Claims (1)
1. a computer control locomotive diesel engine is shut down the lubrication protection method, it is characterized in that taking following steps:
A. system initialization;
B. detect in real time and the storage diesel engine speed;
C. if rotating speed more than or equal to shutting down setting value, returns step b; Otherwise, judge and shut down, enter next step;
D. read diesel engine and shut down the interior diesel engine speed of preceding set time, shut down supplying lubricating oil time according to this rotating speed decision;
E. if halt instruction is arranged, enter next step; Otherwise, directly enter step g;
F. disconnect the fuel pump contactor;
G. the timing of closed startup lubricating oil pump contactor;
H. start lubricating oil pump to diesel engine lubrication delivery and timing;
I. if the supplying lubricating oil time does not arrive, get back to step h; Otherwise, enter next step;
J. disconnect and start lubricating oil pump contactor and fuel pump contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910012743XA CN101968002B (en) | 2009-07-28 | 2009-07-28 | Computer controlled locomotive diesel engine stop lubrication protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910012743XA CN101968002B (en) | 2009-07-28 | 2009-07-28 | Computer controlled locomotive diesel engine stop lubrication protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101968002A true CN101968002A (en) | 2011-02-09 |
| CN101968002B CN101968002B (en) | 2012-11-28 |
Family
ID=43547212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910012743XA Expired - Fee Related CN101968002B (en) | 2009-07-28 | 2009-07-28 | Computer controlled locomotive diesel engine stop lubrication protection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101968002B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847442A (en) * | 2015-04-30 | 2015-08-19 | 中国北车集团大连机车车辆有限公司 | Internal combustion locomotive stop continued lubrication control device |
| CN112682193A (en) * | 2020-12-28 | 2021-04-20 | 淄柴机器有限公司 | Diesel engine starting and stopping control method for electric pre-fuel supply pump |
| CN114294119A (en) * | 2021-12-29 | 2022-04-08 | 重庆潍柴发动机有限公司 | Engine control method, engine and ship |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207485C (en) * | 2002-07-22 | 2005-06-22 | 成都铁华电子科技实业有限公司 | Enforced lubricating automatic control method and device for diesel engine of locomotive |
| CN2854091Y (en) * | 2005-11-25 | 2007-01-03 | 济南铁路局科学技术研究所 | Protection device for bearing of IC engine supercharger |
| JP4610514B2 (en) * | 2006-04-20 | 2011-01-12 | ヤンマー株式会社 | engine |
| CN201129193Y (en) * | 2007-12-25 | 2008-10-08 | 郑州智星电子科技有限公司 | Automatic control device of lubricating oil pump |
-
2009
- 2009-07-28 CN CN200910012743XA patent/CN101968002B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847442A (en) * | 2015-04-30 | 2015-08-19 | 中国北车集团大连机车车辆有限公司 | Internal combustion locomotive stop continued lubrication control device |
| CN112682193A (en) * | 2020-12-28 | 2021-04-20 | 淄柴机器有限公司 | Diesel engine starting and stopping control method for electric pre-fuel supply pump |
| CN114294119A (en) * | 2021-12-29 | 2022-04-08 | 重庆潍柴发动机有限公司 | Engine control method, engine and ship |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101968002B (en) | 2012-11-28 |
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Granted publication date: 20121128 Termination date: 20200728 |
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| CF01 | Termination of patent right due to non-payment of annual fee |