Device for controlling an outlet valve in the engine brake mode

Details Device for controlling an outlet valve in the engine brake mode Device for controlling an outlet valve in the engine brake mode

1993-03-19

1993-12-28

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

F02D 1304

Patent

active

052730131

ABSTRACT:
A device for controlling an outlet valve during the engine brake mode has a hydraulic linkage between the outlet valve and the cam shaft which is controllable by a control unit. The control unit is combined with an actuation piston of a pressure source to form an integral component which is identical for each outlet valve. The actuation piston is actuated by a brake cam and actuates the working piston of the hydraulic linkage via the intermediate control unit. With the actuation piston the outlet valve can be opened during the engine braking mode in the compression stroke in order to substantially increase the braking power of the engine. The combination of the control unit with the actuation piston in the form of an integral component allows for an inexpensive manufacture because each individual outlet valve can be provided with such an identical control component. Furthermore, by eliminating long connecting lines for the pressure medium with the integral component precise control times for the outlet valve can be achieved.

REFERENCES:
patent: 3786792 (1974-01-01), Pelizzoni et al.
patent: 4164917 (1979-08-01), Glasson
patent: 4930463 (1990-06-01), Hare, Sr.
patent: 5086738 (1992-02-01), Kubis et al.
patent: 5150678 (1992-09-01), Wittmann et al.
patent: 5161500 (1992-11-01), Kubis et al.

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