Design for Control System of Wastegate Valve Actuator in Turbocharger

This paper has designed a set of control system of waste gate valve actuator in turbocharger, it enables the waste gate valve regulate the exhaust flow before turbo automatically according to the operating condition of engine, so it can lower the pressure ratio and prevent the compressor surge occurrence when the compressor is in small flow. In this paper, it elaborated the regulation principles using waste gate valve, designed the electronic control unit and simulation system and tested the function and reliability of the whole control system.