초록 ▼

A by-pass control system for an internal combustion engine provided with a mechanical supercharger arranged in an intake pipe of the engine. The supercharger is connected to a crankshaft by means of a clutch operated in accordance with the engine load as well as the engine speed. A by-pass is arrang

A by-pass control system for an internal combustion engine provided with a mechanical supercharger arranged in an intake pipe of the engine. The supercharger is connected to a crankshaft by means of a clutch operated in accordance with the engine load as well as the engine speed. A by-pass is arranged so as to by-pass the supercharger, on which by-pass a by-pass control valve is arranged. The by-pass control valve is operated in accordance with the engine speed, so that it is opened during an engine low load and high speed condition. The supercharger is located downstream of the throttle valve, while the by-pass is, on its downstream end, connected to the intake pipe downstream of the throttle valve and upstream of the supercharger.

대표청구항 ▼

An internal combustion engine comprising: an engine body; an intake system connected to the engine body, the intake system having a throttle valve for controlling the amount of air introduced into the engine body; an exhaust system connected to the engine body for reception of combustion product fro

An internal combustion engine comprising: an engine body; an intake system connected to the engine body, the intake system having a throttle valve for controlling the amount of air introduced into the engine body; an exhaust system connected to the engine body for reception of combustion product from the engine body; a supercharger functioning as a mechanical pump arranged in the intake system at a position downstream of the throttle valve; connecting means for kinematically connecting the supercharger to the engine for driving the supercharger; a by-pass having a first end connected to the intake system at a position downstream of the supercharger and a second end connected to the intake system at a position between the throttle valve and the supercharger; by-pass valve means including a valve member arranged in the by-pass for controlling an amount of air diverted into the by-pass; and actuator means comprising a spring and a diaphragm located in a chamber and a link means, said spring biasing the valve member toward a closed position, said link means connecting the valve member with the diaphragm means, said valve member being arranged so that it is forced against the spring to open by positive pressure in the intake system downstream of the supercharger said actuator means further comprising a vacuum takeout means arranged in the intake system at a position downstream of the throttle valve and a vacuum conduit for connecting the vacuum takeout means with the chamber for said diaphragm of said actuator means.