Control method and control system of engine, and vehicle

A control method and control system technology, applied in engine control, machine/engine, electrical control, etc., to achieve the effects of improving life, eliminating super knocking, and improving vehicle safety

Inactive Publication Date: 2015-03-11
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In related technologies, for supercharged direct injection engines, some pre-ignition protection control strategies have appeared to protect supercharged direct injection engines.

Method used

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  • Control method and control system of engine, and vehicle
  • Control method and control system of engine, and vehicle
  • Control method and control system of engine, and vehicle

Examples

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Example Embodiment

[0031] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0032] The engine control method, system and vehicle according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0033] figure 1 It is a flowchart of an engine control method according to an embodiment of the present invention. Such as figure 1 Shown and combined figure 2 , The method for controlling an engine according to an embodiment of the present invention includes the following steps:

[0034] Step S101: Detect a vibration signal of the engine w...

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PUM

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Abstract

The invention provides a control method and a control system of an engine, and a vehicle. The method comprises the steps of: detecting a knocking signal in a predetermined crank angle range; judging if the super knocking is generated according to the knocking signal; if the super knocking is generated, adjusting the oil spraying pulse width to reduce the burning temperature; judging if the super knocking is generated again within a preset time after the adjustment of the oil spraying pulse width; and if the super knocking is generated again, preventing the generation of the super knocking through reducing the burning temperature, reducing the maximal load and/or interrupting the oil supply according to thefrequency of the super knocking. The control method of the engine can effectively reduce or even eliminate the super knocking phenomenon of the engine, so that the engine is effectively protected, the service life of the engine is prolonged, and the vehicle safety is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an engine control method, system and vehicle. Background technique [0002] With the increasing global energy shortage and environmental pressure, international and domestic regulations have increasingly stringent requirements on vehicle emissions and fuel consumption. Major automakers have been researching new technologies to achieve the goal of miniaturization and high performance of engines. Turbochargers Technologies such as high pressure and in-cylinder direct injection have become the mainstream trend in the development of automotive engine technology. [0003] However, in recent years, a new abnormal combustion mode, that is, super knock, has appeared on supercharged direct injection gasoline engines. One of the causes of super knock is caused by too high compression ratio. Because the mixture burns itself before the spark plug ignites, it is often called pre-ignition...

Claims

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Application Information

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IPC IPC(8): F02D43/00
Inventor 李克俊马瑞瑄石涛乔海波李南
Owner GREAT WALL MOTOR CO LTD
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