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Engine control method and ECU

A control method and engine technology, applied in the direction of engine control, engine components, machines/engines, etc., can solve problems such as crankcase oil-air mixture cannot be discharged smoothly, crankcase and supercharger oil leakage, crankcase pressure rise, etc., to achieve Avoid supercharger oil leakage, reduce output energy and reduce pressure

Inactive Publication Date: 2018-07-03
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The longer the time, the more ice will accumulate, which will eventually block the entire pipeline, resulting in the failure of the oil-air mixture in the crankcase to be discharged smoothly, resulting in an increase in the pressure in the crankcase, resulting in oil leakage from the crankcase and the supercharger

Method used

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  • Engine control method and ECU
  • Engine control method and ECU
  • Engine control method and ECU

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Experimental program
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Embodiment Construction

[0022] As mentioned above, there is currently a problem with crankcase and supercharger oil leakage.

[0023] In order to solve the above problems, the engine control method in the embodiment of the present invention obtains the pressure of the respirator, and then reduces the output energy of the engine when it is determined that the pressure of the respirator exceeds the preset crankcase pressure threshold, which can reduce Reduce the pressure of the crankcase, thereby avoiding oil leakage from the crankcase and supercharger.

[0024] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] figure 1 A schematic structural view of an engine in an embodiment of the present invention is shown, and the engine includes: a crankcase 11 , a respirator 12 , a supercharger 13 and an air filter element...

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Abstract

The invention discloses an engine control method and an ECU. The engine comprises a crankcase, a breather, a supercharger and an air filter element. The method comprises the following steps of acquiring the pressure of the breather; judging whether the pressure of the breather exceeds a preset pressure threshold value of the crankcase or not; and when the pressure of the breather is determined toexceed the pressure threshold value of the crankcase, reducing the output energy of the engine and decreasing the pressure of the crankcase. According to the scheme of the engine control method and the ECU, oil leakage of the crankcase and the supercharger can be avoided.

Description

technical field [0001] The invention relates to the field of internal combustion engine control of vehicles, in particular to an engine control method and an ECU. Background technique [0002] The crankcase ventilation of the engine adopts a closed cycle, and the oil-air mixture discharged from the breather will enter the front pipeline of the supercharger, mix with the fresh air entering from the air filter, and then enter the supercharger together, so as to participate in combustion again. However, in a low temperature environment, the water vapor in the oil-air mixture in the crankcase will condense and freeze on the pipe wall. The longer the time, the more ice will accumulate, and eventually the entire pipeline will be blocked, so that the oil-air mixture in the crankcase cannot be discharged smoothly, resulting in an increase in the pressure in the crankcase, which in turn will cause oil leakage from the crankcase and the supercharger. At present, how to avoid crankcas...

Claims

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Application Information

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IPC IPC(8): F01M13/00F02D41/30F02D45/00
Inventor 曾斌梁艳军严嵘李禕旻杨芾曹震朱国华
Owner SAIC MOTOR