Caterpillar Inc.

Andrew David Schick

Terril James Johnson

Pravin B Sondkar

Adrian Porojan

Siva Naga Prasad Nalam Satyavara

Curtis John Graham

Chad Palmer Koci

Allen Yao Chen

Thomas L Atwell

Jason Rex Dare

Seth Evan Slaughter

Samuel Jaroslav Stafl

Allen Y Chen

Samuel J Stafl

An injector sleeve for a cylinder head may include a lower portion, a middle portion, and an upper portion. The upper portion may have a maximum thickness along at least a portion of a length thereof, and a groove on an inner surface of the injector sleeve. The groove may have an upper planar surface that is normal to a longitudinal axis of the injector sleeve. A related method of removing an injector sleeve from a cylinder head may include inserting a removal tool into the injector sleeve, within the cylinder head, by a predetermined depth, engaging a surface of the removal tool with an upper planar surface of a groove on an inner surface of an upper portion of the injector sleeve, and pulling the removal tool outward from the cylinder head, thereby removing the injector sleeve from the cylinder head.

Injector sleeve having inner groove

An engine includes a cylinder block having formed therein a plurality of cylinders, a main oil gallery, and a spray jet gallery. A cross-hole is fluidly connected to the main oil gallery and extends to the spray jet gallery. Oil spray jets are each fluidly connected to one of a plurality of oil feed holes fluidly connected to the spray jet gallery. An oil admission valve, which can be hydraulically actuated or electrically actuated, is supported in the cylinder block and movable between a closed position to block the spray jet gallery and each of the oil feed holes from the cross-hole, and an open position.

Engine having cylinder block casting with oil spray jet gallery and oil admission valve for selective oil jet spraying to cylinders

Valve cover

Valve cover with breather tube

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Edelstein, IL, United States of America

Andrew David Schick