KNOCKING CONTROL DEVICE OF INTERNAL-CONBUSTION ENGINE WITH SUPERCHARGER

摘要

PURPOSE:To improve the rate of fuel consumption and enhance durability of an engine by furnishing a knocking control circuit which controls the opening of a throttle valve in accordance with the knocking sensing signal from the engine, and thereby increasing or decreasing the by-passed amount in exhaustion. CONSTITUTION:The taken-in air is introduced into the engine from the supercharged wile passig through a compressor 202 of a supercharger 200. Actuator 120 to drive the exhaust by-pass valve 11 is put in communication with the outlet 3a of the compressor through a pressure conduit 13. The throttle valve 15 is controlled by a knocking sensor 19 and a knoking control circuit 18. Thereby the pressure introduced into the actuator 120 for exhaust by-pass valve is changed in accordance with the condition of knocking occurrence to increase or decrease the bypassed amount in exhaustion. Thus the output and the rate of fuel consumption are improved and knockings pevented, and thereby the temperature of exhaust gas can be lowered to bring about enhancement of the durability of engine.