Cylinder valve drive for internal combustion engine

Details Cylinder valve drive for internal combustion engine Cylinder valve drive for internal combustion engine

1995-04-12

1996-10-15

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, 123 9021, F01L 1300

Patent

active

055643736

ABSTRACT:
A valve drive for an internal combustion engine, comprises a valve train which is operable in a first state to transfer the rotational motion of a low lift cam lobe to the reciprocating motion of a cylinder valve against a valve spring. The valve train is also operable in a second a sate to transfer the rotational motion of a high lift cam lobe to the reciprocating motion of the cylinder valve against the valve spring. The valve train includes a cam follower arranged to move between a first position in which the cam follower is driving relation with the low lift cam lode and a second position in which the cam follower is in driving relation with the high lift cam lobe. An actuator and a return mechanism are arranged outside of the valve train to shift the cam follower between the first and second positions thereof.

REFERENCES:
patent: 4534323 (1985-08-01), Kato et al.
patent: 5113813 (1992-05-01), Rosa
patent: 5203289 (1993-04-01), Hara et al.
patent: 5205247 (1993-04-01), Hoffman
patent: 5275137 (1994-01-01), Uesugi

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