Patent ID: 6655348
Filing Date: 2003-12-02
Classification: F02B,Y02T

Abstract:
A duct system for use as an intake manifold for an internal combustion engine, said duct system comprising at least one inlet, at least two intake channels with outlets, at least one of said channels having a pivotably mounted flap valve installed therein, an actuator which produces a switching force, a force transmitting mechanism which transmits the switching force from the actuator to a control member associated with each flap valve to turn the flap valve such that the flap valve is continuously adjustable to any position between fully open and fully closed; wherein mechanical couplings are provided between the flap valves, the control members, the force transmitting means, and the actuator which are at least essentially free of play, and wherein a position adjusting mechanism is provided for each individual flap valve at one of the mechanical couplings.