Engine valve actuating system

Details Engine valve actuating system Engine valve actuating system

1997-10-07

1999-07-20

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9039, F01L 1300

Patent

active

059243961

ABSTRACT:
A number of embodiments of variable valve actuating systems wherein the valve is operated selectively by either first or second rocker arms both of which are supported for pivotal movement on the same rocker arm shaft but which are operated by different cams and have different lifts. Only one of the rocker arms directly operates the valve. The lift is changed by selectively coupling the rocker arms for simultaneous operation. A number of variations in locations and valve actuation are disclosed as well as a variable induction system that cooperates with the variable valve actuation to improve the engine performance over a wider range of speeds and loads.

REFERENCES:
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patent: 5301636 (1994-04-01), Nakamura
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patent: 5558060 (1996-09-01), Horie et al.
patent: 5622145 (1997-04-01), Hara
patent: 5651336 (1997-07-01), Rygiel et al.
Patent Abstracts of Japan, vol. 015, No. 279 (M-1136), Jul. 16, 1991 & JP 03 096605 A.
Patent Abstracts of Japan, vol. 010, No. 385 (M-548), Dec. 24, 1986 & JP 61 175206 A.

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