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Control system and method of electronic throttle valve of exhaust gas turbocharged engine

A technology of supercharged engine and electronic throttle valve, applied in the directions of engine control, electrical control, machine/engine, etc., can solve problems such as difficulty in coordinating control of throttle valve and booster control, and achieve the effect of ensuring power performance

Active Publication Date: 2020-06-09
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the differences and complexity of each component, it is necessary to ensure efficient, stable and fast response to torque requests while protecting the life of components, which brings challenges and difficulties to the requirements of the control system
[0005] The control of the throttle in the prior art calculates the target throttle opening directly according to the target intake pressure. Difficulty in coordinating control of valve and boost control

Method used

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  • Control system and method of electronic throttle valve of exhaust gas turbocharged engine
  • Control system and method of electronic throttle valve of exhaust gas turbocharged engine
  • Control system and method of electronic throttle valve of exhaust gas turbocharged engine

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0028] The main components of the exhaust gas turbocharged engine air intake system based on the present invention are: atmospheric pressure sensor, supercharger, electronic pressure relief valve, intercooler, temperature and pressure sensor before throttle, throttle, throttle Gas temperature and pressure sensor, carbon tank solenoid valve, EGR, VVT system, etc., such as figure 2 shown;

[0029] Among them, the atmospheric pressure sensor is used to read the atmospheric pressure, installed in the PCB (Printed Circuit Board, printed circuit board) board of the controller ECU (Electronic Control Unit, electronic control unit); the supercharger includes the supercharger body and the exhaust gas The bypass valve controls the boost pressure by adjusting the opening of the waste gas bypass valve; the electronic pressure relief valve is used to prevent the ai...

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Abstract

The invention discloses a control system of an electronic throttle valve of an exhaust gas turbocharged engine. The control system of the electronic throttle valve of the exhaust gas turbocharged engine is characterized by comprising a throttle valve controller, the throttle valve controller has a throttle valve normal control mode, a throttle valve full-open control mode and a throttle valve anti-overshoot control mode, wherein the effective area of the throttle valve is the effective area of a target throttle valve under the throttle valve normal control mode; the effective area of the throttle valve is the maximum opening area of the target throttle valve under the throttle valve full-opening control mode, and the change rate of the effective area of the target throttle valve is the maximum change rate allowed by the throttle valve when the throttle valve is fully opened; and the effective area of the throttle valve is the corrected value of the effective area of the target throttlevalve under the throttle valve anti-overshoot control mode. According to the control system and method of the electronic throttle valve of the exhaust gas turbocharged engine, the stability of the target air inlet pressure in an air inlet system is ensured, so that the stability of the dynamic property of a vehicle is ensured.

Description

technical field [0001] The invention belongs to the technical field of automobile engine control, and in particular relates to a control method system and method for an electronic throttle of an exhaust gas turbocharged engine. [0002] technical background [0003] Turbocharging is the most widely used supercharging method on vehicle engines at present. Turbocharged engines have become the main way for major automobile companies to improve energy conservation and emission reduction. Exhaust gas turbocharging means that the exhaust gas with a certain amount of energy discharged from the engine enters the turbine and expands to do work. The power of the exhaust gas turbine is used to drive the working impeller of the compressor that rotates coaxially with the turbine, and the fresh air is compressed in the compressor and then sent to the cylinder. [0004] The intake air volume control of the engine needs to be controlled by adjusting the electronic throttle valve and the sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02D41/14
CPCF02D41/0007F02D41/1401F02D2041/1409
Inventor 秦龙杨柳春刘磊王恺
Owner DONGFENG MOTOR CORP HUBEI
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