Patent ID: 6827060
Filing Date: 2004-12-07
Classification: F02B,F02D,F02M,Y02T

Abstract:
A variable charge device for controlling the flow of the fuel-air mixture into an engine, the device comprising:an actuator having an electric motor with a worm formed on a rotary shaft of the electric motor, wherein said actuator is configured to be mounted at one side of an intake manifold having at least one port, operating in response to control signals transmitted from an electronic control unit; and a manipulator that is operated by the actuator to adjust an opening of each port of the intake manifold, wherein said manipulator further comprises: a worm gear that meshes with the worm and is rotated by rotation of the worm; a rotary rod that is rotated by the worm gear and penetrates each port of the intake manifold, wherein the rotary rod is semi-circular in cross-section and each port is formed with recess grooves that are semi-circular in cross-section and that accommodate the rotary rod; and an opening/closing member for each port, the opening/closing members being coupled to the rotary rod to open and close the passage of each port.