Variable valve actuating apparatus for internal combustion...

Details Variable valve actuating apparatus for internal combustion... Variable valve actuating apparatus for internal combustion...

2008-03-14

2011-11-22

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150

Reexamination Certificate

active

08061311

ABSTRACT:
A variable valve actuating apparatus for an internal combustion engine includes an intake valve operating angle varying mechanism, an intake valve timing varying mechanism, and an exhaust valve timing varying mechanism. Before startup of the engine, the intake valve operating angle varying mechanism holds an intake valve operating angle at an intermediate value, the intake valve timing varying mechanism holds intake valve opening and closing timings most advanced, and the exhaust valve timing varying mechanism holds exhaust valve opening and closing timings most retarded.

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