Cummins Engine Company, Inc.

John Jerl Purcell

Francis M Hager

James L Jessup

Cynthia I Mandt

Jim Kahlenbeck

A compression braking system is provided which permits an engine's exhaust valves to be operated by fuel pressure during a braking mode independently of the engine's mechanical actuating elements and associated control limitations. The present braking system includes a high pressure fuel supply including a high pressure fuel accumulating device for accumulating and temporarily storing high pressure fuel and an actuator device including an actuator piston operatively connected to the engine exhaust valve and a brake actuating valve for controlling fuel flow from the accumulating device to the actuator piston. The pressure of the fuel acting on the actuator causes movement of the exhaust valve. The system may include a pressure regulator for decreasing the accumulator fuel pressure to a more appropriate actuation fuel pressure to minimize high pressure joints and leakage. A improved sealing means may be provided for preventing leakage around the actuator piston. The braking system may further include a pressure reduction device for reducing the fuel pressure acting on the actuating piston after the initial movement of the piston.

Fuel pressure activated engine compression braking system

A rocker lever assembly including lubricant directing structure is provided for an internal combustion engine drive train. A lubricant deflecting shroud is secured to a joint-contacting end of a rocker lever above open lubricant channels to direct lubricant to an adjacent drive train joint and minimize airborne lubricant.

Rocker level oil shroud

A removal tool which includes an elongated member with two attachment devices of different size located at opposing ends thereof. A slidable hammer receives the elongated member through a longitudinal bore permitting it to slide the entire length of the elongated member which is formed of a flexible material. A component, i.e. a fuel injector, is removed by coupling a chosen attachment device to the component and then applying sharp upward strokes with the slide hammer against the remaining attachment device.

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Columbus, IN, United States of America

John Jerl Purcell