Supercharged internal combustion engine

Abstract

An air supplying apparatus comprises, an air intake channel, one end of which is opened to the atmosphere, the other end of which is connected to a cylinder and in which an air stream flowing toward the cylinder is provided, a throttle valve provided in the other end side portion of the air intake channel, movable between a first position where the throttle valve sets the cross-sectional area of the air stream minimum and a second position where the throttle valve sets the same maximum, thereby controlling the output power of the engine, a control valve provided in one end side portion of the first channel, movable between a third position where the control valve closes the air intake channel and a fourth position where the control valve opens the air intake channel, a control channel attached to the air intake channel to by-pass the control valve, a supercharger provided in the control channel, a link mechanism connecting the throttle valve to the control valve, to move the control valve from the fourth position to the third position when the throttle valve moves from the first position to the second position, and to move the control valve from the third position to the fourth position when the throttle valve moves from the second position to the first position, and play mechanism attached to the link mechanism, for allowing one of the throttle and control valves to move when the other valve is held at a fixed position.