Internal-combustion engines – Engine speed regulator – Responsive to deceleration mode
Reexamination Certificate
2011-03-08
2011-03-08
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Engine speed regulator
Responsive to deceleration mode
C123S090120, C123S568140
Reexamination Certificate
active
07900597
ABSTRACT:
A compression-release brake system for operating an exhaust valve of an engine during an engine braking operation. The compression-release brake system comprises a self-contained compression brake control module (CBCM) operatively coupled to the exhaust valve for controlling a lift and a phase angle thereof and a source of a pressurized hydraulic fluid. The CBCM includes a casing defining piston and actuator cavities, a slave piston mounted within the piston cavity, a check valve provided between a supply conduit and a slave piston chamber and a compression brake actuator disposed in the actuator cavity. The compression brake actuator includes an actuator element and a biasing spring. The actuator element selectively engages the check valve when deactivated so as to unlock the slave piston chamber, and disengages from the check valve when activated so as to lock the slave piston chamber. The actuator element is exposed to atmospheric pressure.
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Meneely Vincent
Price Robert
Berenato & White LLC
Cronin Stephen K
Hoang Johnny H
Pacbrake Company
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