Externally driven compression release retarder

Details Externally driven compression release retarder Externally driven compression release retarder

1990-09-21

1991-05-07

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123 9016, F02D 1304

Patent

active

050127780

ABSTRACT:
An engine retarding system of a gas compression release type is provided for an engine equipped with a high pressure hydraulic fluid supply system. The retarder comprises an hydraulically driven exhaust valve actuator, a solenoid actuated servo valve controlling the flow of high pressure hydraulic fluid from the supply to the actuator and an electronic controller which provides a signal to operate the solenoid as a function of the engine speed and crankshaft position.

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patent: 4936273 (1990-06-01), Myers

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