Patent ID: 8851041

Claim:
An intake system of an internal combustion engine, comprising: an intake manifold ( 12 ) including: a plenum chamber ( 15 ) having feed pipes connected thereto; said plenum chamber connected feed pipes ( 14 ) having one end secured to said plenum chamber, each of said plenum chamber connected feed pipes ( 14 ) including an intake control valve, an interior volume in flow communication with said plenum chamber, said plurality of feed pipes ( 14 ) having an opposing end connected to and with said interior volume in flow communication with respective intake ports of a cylinder head of the internal combustion engine; a casing ( 28 ) arranged on and secured onto an exterior of said plenum chamber connected feed pipes at an intermediate position between said ends of each of said plenum chamber connected feed pipes, said casing ( 28 ) having an intermediate chamber ( 30 ) therein, said intermediate chamber ( 30 ) extending across all of said plenum chamber connected feed pipes ( 14 ); wherein each of said plenum chamber connected feed pipes ( 14 ) includes: a.) a connection duct ( 34 ) arranged within an interior of said casing and in an interior of said intermediate chamber ( 30 ) within said casing ( 28 ), said connection duct ( 34 ) having a first end fluidically connected to said interior volume ( 24 ) of a respective one of said plenum chamber connected feed pipes ( 14 ); b.) said intake control valve ( 49 ) arranged within said casing ( 28 ) on an opposing second end of said connection duct ( 34 ), each intake control valve ( 49 ) having an actuator operable to move said intake control valve between an open position and a closed position, fluidically opening or closing off flow between said connection duct ( 34 ) and said intermediate chamber ( 30 ); wherein said control valves of said plenum chamber connected feed pipes ( 14 ) are each fluidically connected to and share the same intermediate chamber ( 30 ); wherein flow through said connection duct ( 34 ) between said interior volume ( 24 ) of the respective one of said plenum chamber connected feed pipes ( 14 ) and said intermediate chamber ( 30 ) is individually opened or closed by action of its respective intake control valve ( 49 ) and it's respective actuator according to working conditions of the engine.