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Control method for preventing turbocharger surges

A turbocharger and control method technology, applied in pump control, machine/engine, non-variable pump, etc., can solve problems such as easy noise and cost increase

Active Publication Date: 2016-06-15
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a control method for preventing turbocharger surge, aiming to solve the problem of using the intake pressure relief valve system in the prior art to prevent surge, resulting in increased cost, easy generation of noise during discharge, and Problems limiting turbocharger performance optimization and sizing

Method used

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  • Control method for preventing turbocharger surges
  • Control method for preventing turbocharger surges
  • Control method for preventing turbocharger surges

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Embodiment Construction

[0035] A control method for preventing turbocharger surge provided by the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims.

[0036] The present invention provides a control method for preventing turbocharger surge, obtains the minimum flow value of the gas entering the throttle to avoid compressor surge, and compares the minimum flow value with the desired throttle flow value of the driving intention For comparison, when the throttle flow value expected by the driving intention is less than the minimum flow value, the throttle valve is delayed to be closed according to the minimum flow value. figure 1 It is a structural schematic diagram of the compressor, the pipeline and the throttle in the embodiment of the present invention, wherein the compressor communicates with the throttle throug...

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Abstract

The invention provides a control method for preventing turbocharger surges. A minimum flow value of gas which enters a throttle valve and can prevent a gas compressor from surges is obtained. The minimum flow value is compared with a throttle valve flow value expected by driving intention, and when the throttle valve flow value expected by the driving intention is smaller than the minimum flow value, the throttle valve is delayed off according to the minimum flow value. By means of the control method for preventing the turbocharger surges, the problems that in the prior art, an inflow gas pressure release valve system is adopted for preventing surges, consequently, the cost is increased, noise is liable to be generated during flow release, and performance optimization and type selection design of a turbocharger are limited are solved.

Description

technical field [0001] The invention belongs to the field of vehicle system control and relates to a control method for preventing surge of a turbocharger. Background technique [0002] The turbocharger is a structure often used in the automotive field at present. It uses the exhaust gas energy from the gasoline engine to drive the turbine, so that the turbine drives the coaxial compressor to do work on the air and sends the compressed air into the cylinder of the gasoline engine. The turbocharger has the advantages of increasing engine power, improving fuel economy, reducing fuel consumption, reducing exhaust emissions and providing plateau compensation functions. However, when the working condition of the compressor in the turbocharger system changes, it is prone to surge phenomenon, that is, when the air flow through the compressor is reduced to a certain extent, the operating condition point enters the surge boundary line In the left area of ​​the left side, the air flo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/02F02B37/16
CPCF02B37/16F04D27/0253Y02T10/12
Inventor 李乐刘宁习纲陈晖郭辉秦文刚
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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