Method of distributing air in an engine intake manifold

Details Method of distributing air in an engine intake manifold Method of distributing air in an engine intake manifold

1996-04-16

1997-05-27

McMahon, Marguerite

Internal-combustion engines

Intake manifold

For engine having radiating cylinders

12318455, F02M 3510

Patent

active

056322399

ABSTRACT:
A three plenum air distribution manifold for intake air to an internal combustion engine with long runners leading from first and second spaced side plenums for delivery of air and recirculating exhaust gases into corresponding combustion chambers of the engine. The side plenums are connected at their outer extremities by an acoustically balanced cross over passage selectively closed by a manifold tuning valve (MTV) for improving engine output torque during low engine speed. A third plenum intermediate the two side plenums communicates directly with the combustion chambers through short runner passages opened and closed by valves (SRVs) for optimizing the output of engine torque during a higher range of engine speeds. The air flow through the manifold is controlled by an onboard electronic controller responsive to operating signals from the engine to change the characteristics of the manifold with different engine speeds.

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