Combined exhaust restriction and variable valve actuation

Details Combined exhaust restriction and variable valve actuation Combined exhaust restriction and variable valve actuation

2011-06-07

2011-06-07

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090160, C123S090170

Reexamination Certificate

active

07954465

ABSTRACT:
An internal combustion engine that includes both a variable valve actuation system and an exhaust restriction system to provide engine braking are disclosed. Variable valve actuation and exhaust gas restriction are carried out in response to one or more engine parameters such as engine speed, engine load, vehicle speed, and/or manifold temperature and pressure. Variable valve actuation and exhaust gas restriction may be controlled to provide selective engine performance during positive power operation and/or during engine braking operation.

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