Caterpillar Inc.

Samuel Jaroslav Stafl

Curtis John Graham

Chad Palmer Koci

Allen Yao Chen

Thomas L Atwell

Andrew David Schick

Samuel James Boston

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

A portable oil leak detection system having an oil sensor mountable to an engine and configured to detect the presence of oil and a processor positioned within a portable housing. The processor is configured to receive a signal indicative of the oil sensor detecting oil, record a timestamp in response to receiving the signal indicative of the oil sensor detecting oil, and activate an alert indicating that the oil sensor has detected oil.

Device for detecting an oil leak

A relief valve assembly includes a housing assembly defining a chamber therein. The relief valve assembly includes a piston. The piston may be at least partially disposed within the chamber. The relief valve assembly includes a pilot inlet. The pilot inlet may be configured to provide a pilot pressure proximate a second end of the chamber. The relief valve assembly includes an overpressure inlet sealed from a first end of the chamber by the piston. The overpressure inlet may be configured to provide an inlet pressure which may actuate the piston when the inlet pressure exceeds the pilot pressure.

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Peoria, IL, United States of America

Samuel Jaroslav Stafl