Engine retarder hydraulic reset mechanism

Details Engine retarder hydraulic reset mechanism Engine retarder hydraulic reset mechanism

1981-12-24

1983-08-23

Cuchlinski, Jr., William A.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123 9016, F02D 906

Patent

active

043997872

ABSTRACT:
An hydraulic reset mechanism is provided for an engine retarder of the compression relief type. The mechanism senses the force required to hold open an exhaust valve. When this force has decreased substantially from the force required to open the exhaust valve initially, a valve is opened in the hydraulic system to release the hydraulic pressure and permit the exhaust valve to close. The mechanism assures that the engine exhaust valves are closed, or substantially closed, prior to the normal opening of the exhaust valves at the end of the power stroke of the engine without affecting the retarding horsepower produced by the engine brake.

REFERENCES:
patent: 3405699 (1968-10-01), Laas
patent: 3859970 (1975-01-01), Dreisin
patent: 4150640 (1979-04-01), Egan
patent: 4271796 (1981-06-01), Sickler et al.

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