Caterpillar Inc.

David L Lueders

Jason Lee Van Farowe

Allen Yao Chen

Thomas L Atwell

Aaron Gary Heintz

Suresh Babu Chennagowni

John W Milem

Khairul Hassan

Phani Chandar Reddy Konatham

Parthipan Subramanian

A cylinder liner is provided that includes a cylinder bore capable of housing a piston, a top end having an annular flange, a first cylindrical section, a second cylindrical section, and an annular ridge that separates the first cylindrical section and the second cylindrical section. When employed in an a liner bore of an engine bock, the cylinder liner provides for two channels that allow for coolant to be supplied to the cylinder liner.

Internal combustion engine with dual-channel cylinder liner cooling

An internal combustion engine having an engine block and one or more cylinder heads. The engine block houses a plurality of cylinder liners and includes a cylinder liner coolant jacket below an upper planar surface of the engine block and in fluid communication with the plurality of cylinder liners. The one or more cylinder heads are attached to the upper planar surface of the engine block and each of the one or more cylinder heads including one or more cylinder head coolant jackets and one or more downward coolant passages extending from the one or more cylinder head coolant jackets to the cylinder liner coolant jacket for delivering coolant from the one or more cylinder head coolant jackets to the cylinder liner coolant jacket.

Internal combustion engine with top-down cooling

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Henry, IL, United States of America

David L Lueders