Variable valve actuation apparatus for internal combustion engin

Details Variable valve actuation apparatus for internal combustion engin Variable valve actuation apparatus for internal combustion engin

1999-05-21

2000-09-26

Lo, Wellun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, 123 906, F01L 1300

Patent

active

061230537

ABSTRACT:
A variable valve actuation apparatus incorporates a mechanism, mounted to a control shaft, to convert rotational motion of a camshaft into pivotal motion of a valve operating cam. The mechanism has different states corresponding to varying angular positions which the control shaft is adjustable to, respectively, The mechanism is continuously variable in state to one of the different states in response to a shift of the control shaft to one of the varying angular positions. The mechanism is also operative to vary the valve operating cam, in position, relative to the associated cylinder valve in response to a shift between the different states.

REFERENCES:
patent: 4397270 (1983-08-01), Aoyama
patent: 5899180 (1999-05-01), Fischer
patent: 5924334 (1999-07-01), Hara et al.
patent: 5937809 (1999-08-01), Pierik et al.
patent: 5988125 (1999-11-01), Hara et al.
patent: 5996540 (1999-12-01), Hara

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