Internal combustion engine with variably actuated valves

Details Internal combustion engine with variably actuated valves Internal combustion engine with variably actuated valves

1997-04-24

1998-11-24

Lo, Wellun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9012, 123308, 123470, 123568, F01L 1300, F01L 902

Patent

active

058394001

ABSTRACT:
An internal combustion engine has two intake valves for each cylinder which can be uncoupled from the respective tappets by drawing fluid under pressure out of a chamber interposed between each tappet and the respective valve. To each engine cylinder there are associated two intake valves, one of which is actuated only at high speed and high loads of the engine. The engine is deprived of the conventional throttle valve. The two intake conduits associated with each cylinder have different specific shapes.

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patent: 5138989 (1992-08-01), Fraidl et al.
patent: 5193494 (1993-03-01), Sono et al.
patent: 5373818 (1994-12-01), Unger

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