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Control system and control method for preventing preignition of engine

A control system and control method technology, applied in the direction of engine control, engine components, machines/engines, etc., can solve problems such as suppression

Inactive Publication Date: 2021-08-31
纬湃汽车电子(长春)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this technology can only take countermeasures such as enriching the air-fuel ratio or adjusting the ignition angle after confirming the occurrence of pre-ignition to avoid re-occurrence of pre-ignition, but cannot suppress it in advance under conditions prone to pre-ignition

Method used

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  • Control system and control method for preventing preignition of engine
  • Control system and control method for preventing preignition of engine

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Embodiment Construction

[0020] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the drawings are only schematic, and only show those parts necessary to clarify the present invention, and other parts are omitted or only mentioned. In addition to the components or processing steps shown in the drawings, the control system and control method of the present invention may also include other components or processing steps.

[0021] see first figure 1 , shows a schematic block diagram of a control system for preventing engine pre-ignition according to an embodiment of the present invention. The control system for preventing engine pre-ignition according to this embodiment mainly includes a detection module, an electronic control unit ECU and an execution module.

[0022] The detection module is used to detect the operating parameters of the engine. Specifically, in the illustrated embodiment, the detectio...

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Abstract

The invention relates to a control system and a control method for preventing preignition of an engine. An inlet temperature detection unit obtains the inlet temperature of the engine. A storage unit stores a preset working condition where preignition is prone to occurring. A judging unit judges whether the engine works under the working condition where preignition is prone to occurring or not when the inlet temperature of the engine exceeds a first threshold value. A control module activates the preignition suppression function when the judging unit judges that the engine works under the working condition where preignition is prone to occurring so as to prevent preignition from occurring. According to the control system and the control method, preignition suppression measures can be taken in advance when it is recognized that the engine works under the working condition where preignition is prone to occurring, and therefore preignition is prevented.

Description

technical field [0001] The invention belongs to the field of automobiles, and in particular relates to a control system and a control method for preventing engine pre-ignition. Background technique [0002] For gasoline engines that use spark plugs to ignite the mixture of fuel and air, in order to ensure the normal performance and emission performance of the engine, it is very important to ensure that the ignition sequence between the cylinders of the engine and the ignition timing of each cylinder are correct. . However, even with correct ignition timing, the mixture may still burn before the spark plug ignites, a phenomenon known as "pre-ignition". [0003] There are many causes of premature combustion. For example, when the engine is running under heavy load, the spark plug, exhaust valve, piston or other parts of the combustion chamber are heated to form a higher temperature ignition point, or the engine oil enters the combustion chamber and induces early combustion. ...

Claims

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Application Information

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IPC IPC(8): F02D35/02F02B77/08F02M35/10
CPCF02D35/025F02D35/026F02B77/08F02M35/1038
Inventor 孙宇兴
Owner 纬湃汽车电子(长春)有限公司
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