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AssigneeFilterwerk Mann & Hummel GmbH
InventorsThomas Jessberger, Arthur Klotz, Rudolf Leipelt, Stefan Maier, Holger Paffrath, Herbert Pietrowski, Achim Rehmann, Robert Vaculik
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A duct system suitable for use as an intake manifold for an internal combustion engine, including flap valves (13) for selective opening and closing of the ducts. The positions of the valves are continuously adjustable in order to produce a swirl in the flow of combustion air. To achieve this, a high degree of angular precision is required in the positioning of the valves. Intake manifold manufacturing tolerances need to be compensated during assembly of the valves. A valve adjusting mechanism is provided in mechanical couplings (23) of the valve linkage between the position adjusting motor (19) and the flap valves (13).
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;
Dependencies are inferred from the claim text.