Gm Global Technolgoy Operations, Inc.

Anteo Carl Opipari

Brian Joseph Warner

Paul Austin

Nick J Hendriksma

Michael E McCarroll

Rolando Huerta Ortiz

James Augustine Hazel

An engine brake system, comprising a housing comprising a first passage extending along a first axis, a second passage extending along a second axis that intersects the first axis, the first passage in communication with the second passage. The engine brake system further comprises a pin arranged in the first passage and configured to translate along the first axis to hold open one or more valves of an internal combustion engine, a wedge arranged in the second passage and configured to translate along the second axis and engage with the pin, and a solenoid coupled to the wedge and configured to actuate the wedge along the second axis.

Engine brake system for an internal combustion engine

A cylinder deactivation system for an engine includes an engine block defining a cylinder. A valve opens and closes a port to the cylinder. A rocker arm pivots to operate the valve. A camshaft has a cam lift and a cam-to-rocker input system transfers the cam lift through the rocker arm to the valve. A deactivation assembly is disposed in the rocker arm and is responsive to fluid pressure to alternately effect an activated state of the valve and a deactivated state of the valve.

Engine valvetrain deactivation system with switchable rocker arm cam lift

A cam follower assembly having a plastic guide body and a cam follower having two opposing roller shaft ends is provided. The single piece guide body includes a pair of grooved members. Each of the grooved members include an interior surface defining an elongated guide groove having a recessed surface. The elongated guide grooves are facing and aligned with each other. The cam follower is disposed between the pair of grooved member such that one of the roller shaft ends is received in one guide groove and the opposite roller shaft end is received in the other of the guide groove. The roller shaft ends are slidable in a reciprocal axial direction within the elongated guide grooves and retained between the recessed surfaces. The plastic guide body may be injection molded from a nylon material having glass fibers.

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Saugatuck, MI, United States of America

Anteo Carl Opipari