Cummins Inc.

Joseph Scot Roederer

Peter Vinson Woon

Paul Douglas Free

Jason Robert Griffin

Stephen Sunadh Gidla

Alex Edward Priestley

Andrew Guy Kitchen

Steven L Leffler

Amit A Kulkarni

Pallav Jha

John A Rennekamp

Axel Zur Loye

Pallav Scott Jha

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

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, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke.

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Columbus, IN, United States of America

Joseph Scot Roederer