Caterpillar Inc.

Jeffrey L Degroot

Hans P Dietz

Thomas G Skinner

Thomas A McCauley

Susan J Gaugush

H Paul Dietz

Angela I Tan

Overspeed prevention

A method and apparatus for controlling the speed of an engine having a plurality of cylinders and a compression brake operable on one or more of the cylinders is disclosed. The method includes determining a speed of the engine, comparing the engine speed to a first threshold, and activating the compression brake for at least one of the cylinders in response to the engine speed exceeding the first threshold.

Method and apparatus of controlling the actuation of a compression brake

A spool valve assembly for isolating and/or minimizing actuating fluid pressure fluctuations between a pair of actuating fluid manifolds in a hydraulically-actuated fuel injection system. The spool valve assembly may be integrally formed with an actuating fluid supply pump or positioned remote therefrom in the fluid flowpath between the supply pump and the pair of actuating fluid manifolds.

Helmoltz isolation spool valve assembly adapted for a

Growing community of inventors

Metamora, IL, United States of America

Jeffrey L Degroot