Compression release brake with hydraulically adjustable timing

Details Compression release brake with hydraulically adjustable timing Compression release brake with hydraulically adjustable timing

1996-01-18

1997-07-08

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123321, F02D 1304

Patent

active

056450311

ABSTRACT:
A pressure release brake for an internal combustion engine includes a master hydraulic actuator and a slave hydraulic actuator. The slave hydraulic actuator is operatively connected to the exhaust valve opening mechanism of one exhaust valve. The master hydraulic actuator is movable by an engine component to increase hydraulic pressure which moves the slave hydraulic actuator and opens the one exhaust valve near top dead center of compression strokes when the brake is operational. There is a lash adjusting mechanism for the slave hydraulic actuator. The lash adjusting mechanism includes a device for adjusting hydraulic pressure acting on the slave hydraulic actuator during exhaust strokes and thereby lash between the slave hydraulic actuator and the exhaust valve opening mechanism.

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patent: 5513673 (1996-05-01), Slavin et al.
patent: 5526784 (1996-06-01), Hakkenberg et al.

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