CN112682193A - Diesel engine starting and stopping control method for electric pre-fuel supply pump - Google Patents
Diesel engine starting and stopping control method for electric pre-fuel supply pump Download PDFInfo
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- CN112682193A CN112682193A CN202011577546.5A CN202011577546A CN112682193A CN 112682193 A CN112682193 A CN 112682193A CN 202011577546 A CN202011577546 A CN 202011577546A CN 112682193 A CN112682193 A CN 112682193A
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Abstract
The invention relates to a method for controlling starting and stopping of a diesel engine with an electric pre-fuel feed pump, which comprises the following steps: A. when the diesel engine is started: pressing a start button of a diesel engine monitor, firstly controlling the electric pre-feeding pump to operate by the monitor, and stopping the operation of the electric pre-feeding pump when the lubricating oil pressure of the lubricating oil is not less than P1 or the pre-feeding time is not less than Ti1, and starting the diesel engine; B. when the diesel engine is stopped: when the monitor detects that the rotating speed of the diesel engine is less than or equal to the lowest rotating speed N1 and the temperature of the lubricating oil is more than or equal to Te1, the electric pre-feeding pump is controlled to operate, and the pre-feeding of the lubricating oil is stopped after the pre-feeding time of the lubricating oil exceeds Ti 2. The invention can be applied to most diesel engines, and realizes the interlocking control of the starting of the electric pre-oil supply pump and the starting and stopping of the diesel engine.
Description
Technical Field
The invention belongs to the technical field of diesel engines, and particularly relates to a diesel engine starting and stopping control method for an electric pre-fuel supply pump.
Background
In order to ensure the safe and normal operation of the diesel engine, the diesel engine is generally provided with a pre-oil supply pump, lubricating oil is pre-supplied before starting and after stopping, and a lubricating oil film is formed between moving parts. Firstly, the wear of parts caused by dry grinding after the diesel engine is started is prevented; and secondly, after the vehicle is stopped, the heat is taken away, and the overhigh temperature of each moving part is prevented.
At present, a method for starting and stopping a diesel engine of an electric pre-fuel supply pump comprises the following steps:
1. the electric pre-oil supply pump and the diesel engine are separately provided with a starting button;
2. before starting the diesel engine, pressing a starting button of an electric pre-oil supply pump to pre-supply oil, and loosening the starting button of the electric pre-oil supply pump after the pressure reaches 0.05 MPa;
3. pressing a diesel engine starting button to start the diesel engine;
4. when the diesel engine is stopped, the start button of the electric pre-oil supply pump is pressed, and after a period of time, the button is released.
In the traditional starting and stopping method, the electric pre-oil supply pump and the diesel engine are independently operated, and some users do not start the electric pre-oil supply pump for lubrication before and after the diesel engine is started and stopped due to various reasons, so that the diesel engine is damaged.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention overcomes the defects of the prior art and provides a method for controlling the starting and stopping of a diesel engine with an electric pre-oil supply pump.
The technical scheme adopted by the invention for solving the problems in the prior art is as follows:
the diesel engine starting and stopping control method for the electric pre-fuel supply pump comprises the following steps:
A. when the diesel engine is started: pressing a start button of a diesel engine monitor, firstly controlling the electric pre-feeding pump to operate by the monitor, and stopping the operation of the electric pre-feeding pump when the lubricating oil pressure of the lubricating oil is not less than P1 or the pre-feeding time is not less than Ti1, and starting the diesel engine;
B. when the diesel engine is stopped: when the monitor detects that the rotating speed of the diesel engine is less than or equal to the lowest rotating speed N1 and the temperature of the lubricating oil is more than or equal to Te1, the electric pre-feeding pump is controlled to operate, and the pre-feeding of the lubricating oil is stopped after the pre-feeding time of the lubricating oil exceeds Ti 2.
Preferably, in the step A, when the pre-supply time is more than or equal to Ti1 but the lubricating oil pressure does not reach P1, the monitoring instrument sends out an alarm signal, and the diesel engine is normally started.
The warning memory exists in the pre-supply failure warning signal, and the warning memory needs to be cancelled by pressing a reset key.
Preferably, in the step A, the lubricating oil pressure value P1 is 0.05MPa to 0.08 MPa.
Preferably, in the step A, the pre-feeding time Ti1 is 30 s-50 s.
Preferably, in the step B, the minimum rotating speed N1 is 0 r/min.
Preferably, in step B, the temperature Te1 of the lubricating oil is 60-65 ℃.
Preferably, in the step B, the lubricating oil pre-feeding time Ti2 is 60 s-70 s.
Preferably, the diesel engine monitoring instrument is provided with an emergency starting button, and when an emergency situation occurs, the electric pre-oil supply pump does not need to operate and directly starts the diesel engine.
Preferably, at the start of the diesel engine: when the rotating speed of the diesel engine is greater than N2, the starting motor of the diesel engine is disconnected with the diesel engine, and N2 is greater than or equal to 150 r/min.
Preferably, the diesel engine monitoring instrument is internally provided with a remote transmission module, and the diesel engine can be remotely controlled to start and stop through the remote transmission module.
Compared with the prior art, the invention has the following beneficial effects:
the electric pre-oil supply pump and the diesel engine starting button are integrated into a whole through the diesel engine monitor, and the operation of the electric pre-oil supply pump before the diesel engine is started and after the diesel engine is stopped is realized through a control method. Before the diesel engine is started, a lubricating oil film is formed among the moving parts, and the damage of the diesel engine caused by dry friction among the moving parts is avoided. Meanwhile, after the diesel engine is stopped, the pre-oil supply pump runs, and the moving part of the diesel engine is cooled by lubricating oil.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a control flow chart of the diesel engine starting of the invention,
FIG. 2 is a control flow chart of the diesel engine when the diesel engine is stopped.
Detailed Description
The accompanying drawings are preferred embodiments of the method for controlling starting and stopping of a diesel engine with an electric pre-fuel supply pump, and the invention is further described in detail with reference to the accompanying drawings.
A diesel engine starting and stopping control method for an electric pre-fuel supply pump comprises the following steps:
A. when the diesel engine is started: the starting button of the diesel engine monitor is pressed, the monitor firstly controls the electric pre-feeding pump to operate, when the lubricating oil pressure of the lubricating oil is more than or equal to P1 or the pre-feeding time is more than or equal to Ti1, only one of the two conditions is needed to be met, the electric pre-feeding pump can stop operating, and the diesel engine starts to start;
if the pre-supply time is more than or equal to Ti1 but the lubricating oil pressure does not reach P1, the monitor sends out an alarm signal, the diesel engine is normally started, the pre-supply failure alarm signal has alarm memory and needs to be cancelled by pressing a reset key.
B. When the diesel engine is stopped: when the monitoring instrument detects that the rotating speed of the diesel engine is less than or equal to the lowest rotating speed N1 and the temperature of the lubricating oil is more than or equal to Te1, the electric pre-oil supply pump is controlled to operate, and pre-supply is stopped after the pre-supply time of the lubricating oil exceeds Ti 2.
In the step A, the lubricating oil pressure value P1 is 0.05MPa to 0.08MPa, and the pre-supply time Ti1 is 30s to 50 s.
In the step B, the lowest rotating speed N1 is 0r/min, the temperature Te1 of the lubricating oil is 60-65 ℃, and the lubricating oil pre-supply time Ti2 is 60-70 s.
In this example, P1 was 0.05MPa, Ti1 was 30s, N1 was 0r/min, Te1 was 60 ℃ and Ti2 was 60 s.
The diesel engine monitoring instrument is provided with an emergency starting button, and when an emergency situation occurs, the electric pre-oil supply pump does not need to operate, so that the diesel engine is directly started.
When the diesel engine is started: when the rotating speed of the diesel engine is greater than N2, the starting motor of the diesel engine is disconnected with the diesel engine, N2 is greater than or equal to 150r/min, and the starting motor stops running at the same time.
And a remote transmission module is arranged in the diesel engine monitor, the diesel engine can be remotely controlled to start and stop through the remote transmission module, and the starting and stopping control logics of the diesel engine are the same as those in the step A and the step B.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The method for controlling starting and stopping of the diesel engine with the electric pre-fuel feed pump is characterized by comprising the following steps of:
A. when the diesel engine is started: pressing a start button of a diesel engine monitor, firstly controlling the electric pre-feeding pump to operate by the monitor, and stopping the operation of the electric pre-feeding pump when the lubricating oil pressure of the lubricating oil is not less than P1 or the pre-feeding time is not less than Ti1, and starting the diesel engine;
B. when the diesel engine is stopped: when the monitor detects that the rotating speed of the diesel engine is less than or equal to the lowest rotating speed N1 and the temperature of the lubricating oil is more than or equal to Te1, the electric pre-feeding pump is controlled to operate, and the pre-feeding of the lubricating oil is stopped after the pre-feeding time of the lubricating oil exceeds Ti 2.
2. The method for controlling starting and stopping of a diesel engine equipped with an electric pre-feed pump according to claim 1, wherein:
in the step A, when the pre-supply time is not less than or equal to Ti1 but the pressure of the lubricating oil does not reach P1, the monitor sends out an alarm signal, the diesel engine is normally started,
the warning memory exists in the pre-supply failure warning signal, and the warning memory needs to be cancelled by pressing a reset key.
3. The method for controlling starting and stopping of a diesel engine equipped with an electric pre-feed pump according to claim 1 or 2, wherein:
in the step A, the lubricating oil pressure value P1 is 0.05 MPa-0.08 MPa.
4. The method for controlling starting and stopping of a diesel engine equipped with an electric pre-feed pump according to claim 1 or 2, wherein:
in the step A, the pre-supply time Ti1 is 30 s-50 s.
5. The method for controlling starting and stopping of a diesel engine equipped with an electric pre-feed pump according to claim 1 or 2, wherein:
in the step B, the lowest rotating speed N1 is 0 r/min.
6. The method for controlling starting and stopping of a diesel engine equipped with an electric pre-feed pump according to claim 1 or 2, wherein:
in the step B, the temperature Te1 of the lubricating oil is 60-65 ℃.
7. The method for controlling starting and stopping of a diesel engine equipped with an electric pre-feed pump according to claim 1 or 2, wherein:
in the step B, the lubricating oil pre-supply time Ti2 is 60 s-70 s.
8. The method for controlling starting and stopping of a diesel engine equipped with an electric pre-feed pump according to claim 1 or 2, wherein:
the diesel engine monitoring instrument is provided with an emergency starting button, and when an emergency situation occurs, the electric pre-oil supply pump does not need to operate, so that the diesel engine is directly started.
9. The method for controlling starting and stopping of a diesel engine equipped with an electric pre-feed pump according to claim 1 or 2, wherein:
when the diesel engine is started: when the speed of the diesel engine is higher than N2, the starting motor of the diesel engine is disconnected with the diesel engine,
N2≥150r/min。
10. the method for controlling starting and stopping of a diesel engine equipped with an electric pre-feed pump according to claim 1 or 2, wherein:
the remote transmission module is arranged in the diesel engine monitor, and the diesel engine can be remotely controlled to start and stop through the remote transmission module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011577546.5A CN112682193A (en) | 2020-12-28 | 2020-12-28 | Diesel engine starting and stopping control method for electric pre-fuel supply pump |
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| CN202011577546.5A CN112682193A (en) | 2020-12-28 | 2020-12-28 | Diesel engine starting and stopping control method for electric pre-fuel supply pump |
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| CN112682193A true CN112682193A (en) | 2021-04-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339146A (en) * | 2021-07-28 | 2021-09-03 | 潍柴动力股份有限公司 | Protection method and protection system for sudden stop of engine and engine |
| CN114017157A (en) * | 2021-10-29 | 2022-02-08 | 河南柴油机重工有限责任公司 | Method for controlling pre-supply of engine oil before operation of diesel engine |
| 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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339146A (en) * | 2021-07-28 | 2021-09-03 | 潍柴动力股份有限公司 | Protection method and protection system for sudden stop of engine and engine |
| CN113339146B (en) * | 2021-07-28 | 2024-03-19 | 潍柴动力股份有限公司 | Protection method and protection system for sudden stopping of engine and engine |
| CN114017157A (en) * | 2021-10-29 | 2022-02-08 | 河南柴油机重工有限责任公司 | Method for controlling pre-supply of engine oil before operation of diesel engine |
| CN114017157B (en) * | 2021-10-29 | 2022-10-25 | 河南柴油机重工有限责任公司 | Method for controlling pre-supply of engine oil before operation of diesel engine |
| 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 |
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Application publication date: 20210420 |