Method of operating an engine brake

Details Method of operating an engine brake Method of operating an engine brake

2007-10-23

2007-10-23

Solis, Erick (Department: 3747)

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

Reexamination Certificate

active

11429225

ABSTRACT:
Methods and apparatus for actuating an engine valve provided between an engine cylinder and an exhaust manifold to provide compression-release engine braking in combination with exhaust gas restriction and brake gas recirculation are disclosed. In a first embodiment of the present invention, the engine valve used to provide brake gas recirculation and compression-release braking may be maintained slightly open between the brake gas recirculation and compression-release events. In another embodiment of the present invention, the cam closing ramp for a main exhaust event may be extended to terminate near the beginning of a brake gas recirculation event to facilitate refilling a hydraulic valve actuation system used to in association with the exhaust valve.

REFERENCES:
patent: 6152104 (2000-11-01), Vorih et al.
patent: 6925976 (2005-08-01), Israel et al.
patent: 2006/0081213 (2006-04-01), Yang et al.

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