Control device of exhaust gas by-pass valve

Abstract

A control device of waste gas by-pass valve is prepared as forming crank link mechanism by connecting executor, push bar, crank and link in sequence, fixing waste gas by-pass valve on link and making length of push bar or crank in said crank link mechanism be adjustable one.

Description

technical field [0001] The invention relates to an engine waste gas bypass control device, in particular to an engine waste gas bypass control device with a turbocharger. Background technique [0002] At present, with the increasing requirements for emission, fuel consumption and power characteristics, it is undoubtedly the most feasible solution to use supercharging to improve the performance of the engine in all aspects. Engine supercharger control is divided into two strategies: wastegate control and variable area control. Although the variable section is advanced in technology, due to the limitation of nozzle material and reliability, it will be difficult to be used in high exhaust temperature engines such as small gasoline engines for a long time in the future. The working principle of the wastegate is to open a direct channel between the turbine end of the turbocharger, between the exhaust gas inlet and the gas outlet, without passing through the turbine, and add a va...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of unstable working performance and poor reliability of the actuator with diaphragm spring in the waste gas bypass control device when the stroke is large, the present invention provides a waste gas bypass valve control device, which not only protects the diaphragm spring The actuator can greatly adjust the boosting capacity of the supercharger, improve the plateau compensation ability of the engine and the overall performance of the engine, and the performance is stable and reliable

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