Cummins Inc.

Amit A Kulkarni

Steven L Leffler

Pallav Jha

Robert G Sperry

Terry D Partridge

Kartikeya Tyagi

Andrew Guy Kitchen

Peter Vinson Woon

Joseph Scot Roederer

John A Rennekamp

Axel Zur Loye

Pallav Scott Jha

The present disclosure provides air intake ports and/or intake manifolds having an altered configuration to improve the efficiency of the air intake ports, intake manifolds, and by extension, the engine.

Cobra head air intake ports

Cobra head air intake ports and intake manifolds

An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, charge motion consistency is improved between engine cylinders and between the left bank and the right bank, thereby improving the consistency of combustion and power output, improving efficiency and reducing emissions (e.g., decreased particulate emissions (also described as smoke), hydrocarbon emissions, and NOx emissions), and further including an improved knock margin, improved fuel economy, wider rich and lean limits, etc.

Air intake system for internal combustion engine

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Columbus, IN, United States of America

Amit A Kulkarni