Variable valve timing and lift mechanism

Details Variable valve timing and lift mechanism Variable valve timing and lift mechanism

1996-09-16

1997-07-29

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9039, F01L 1300

Patent

active

056513364

ABSTRACT:
A variable valve selection assembly for an engine valve train of an engine cylinder head which has dual camshafts and two valves associated with each camshaft per cylinder. The variable valve selection assembly includes two end rocker arms and a middle rocker arm and a selectively actuated latching mechanism operative between an end rocker arm and the middle rocker arm so as to selectively link an end rocker arm with said middle rocker arm whereby an end rocker arm moves independently of said middle rocker arm in some modes of operation and whereby an end rocker arm moves in common with said middle rocker arm in other modes of operation.

REFERENCES:
patent: 4887563 (1989-12-01), Ishida et al.
patent: 5207193 (1993-05-01), Sugimoto et al.
patent: 5553584 (1996-09-01), Konno
patent: 5590627 (1997-01-01), Rygiel et al.

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