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Combustion parameter adjusting method and combustion parameter adjusting device of supercharged engine

A supercharged engine and combustion parameter technology, applied in engine control, machine/engine, mechanical equipment, etc., can solve problems such as poor exhaust gas treatment effect of supercharged engines, long catalytic converter light-off time, environmental pollution, etc.

Active Publication Date: 2015-04-22
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology

[0003] The supercharged engine is equipped with a supercharger, and the supercharger will reduce the exhaust gas temperature when it works, so that the catalytic converter in the exhaust system will take a long time to light up, resulting in poor exhaust gas treatment effect of the supercharged engine. environmental pollution

Method used

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  • Combustion parameter adjusting method and combustion parameter adjusting device of supercharged engine
  • Combustion parameter adjusting method and combustion parameter adjusting device of supercharged engine
  • Combustion parameter adjusting method and combustion parameter adjusting device of supercharged engine

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Embodiment Construction

[0044] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] Such as figure 1 As shown, in the secondary air injection system, fresh air is introduced into the exhaust pipe of the automobile through the air filter 11, the secondary air pump 12 and the secondary air valve 13, that is, it is introduced at a position as close as possible to the exhaust valve. Fresh air, so that the fresh air is mixed with the exhaust gases from the engine in the exhaust pipe. The fresh air rich in oxygen will oxidize HC (hydrocarbons) and CO (carbon monoxide) in the exhaust gas, and release heat at the same time, so that the catalytic converter 14 behind starts to work in a short time after the car is started. In turn, the exhaust gas can be processed faster, and the pollution caused by exhaust gas emission to the env...

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Abstract

The invention discloses a combustion parameter adjusting method of a supercharged engine. The combustion parameter adjusting method is applied to the supercharged engine with a secondary air injection system. The method comprises the following steps that firstly, whether the engine is started or not is detected, and if yes, the second step is executed; secondly, the air-fuel ratio of the engine is adjusted to a first preset air-fuel ratio; thirdly, the ignition angles of the engine are adjusted to first preset ignition angles; fourthly, the center temperature of a catalyst is detected; fifthly, the third step and the fourth step are circularly executed so that a plurality of first temperature values corresponding to the different first preset ignition angles in a one-to-one corresponding mode can be obtained; sixthly, the first temperature values are compared so that the first preset ignition angle corresponding to the maximum value in the first temperature values is the target ignition angle. According to the combustion parameter adjusting method, the adverse effect of exhaust of the supercharged engine to the environment can be relieved. The invention further discloses a combustion parameter adjusting device of the supercharged engine.

Description

technical field [0001] The invention relates to the technical field of engine structure design, in particular to a combustion parameter debugging method of a supercharged engine. The invention also relates to a combustion parameter debugging device of a supercharged engine. Background technique [0002] When designing an engine, it is necessary to adjust the combustion parameters of the engine so that the engine can achieve a good working state during later use. The combustion parameters of the engine include ignition advance angle (ie, ignition angle), air-fuel ratio, intake air volume, etc. These parameters will directly affect the working performance of the engine. [0003] The supercharged engine is equipped with a supercharger, and the supercharger will reduce the exhaust gas temperature when it works, so that the catalytic converter in the exhaust system will take a long time to light up, resulting in poor exhaust gas treatment effect of the supercharged engine. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D43/00
CPCF02D43/00
Inventor 陈玮刘青林何博虞坚张香月颜丙辉
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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