Caterpillar Inc.

Abe Ingold

Ashwin Ashok Hattiangadi

John Robert Brubaker

Paul David Smallidge

Dongyao Wang

Srikanth Reddy Boddapati

Uijal Paladhi

A valve seat insert for a gas exchange valve such as an intake valve controlling gas exchange of a cylinder includes an insert body having an inner peripheral surface, an outer peripheral surface, and a valve seating surface structured to contact the gas exchange valve at a closed position and profiled to limit valve recession thereof. The valve seating surface includes an arrangement of linear segments and curved segments forming wear crowns to contact the gas exchange valve at different wear states. The valve seat insert is further structured by way of the inner peripheral surface with an incoming flow crown, and a venturi extending from the incoming flow crown toward a throat of the valve seat insert. The venturi accelerates incoming gas flow.

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Metamora, IL, United States of America

Abe Ingold