System for changing lift of a valve

Details System for changing lift of a valve System for changing lift of a valve

1996-12-13

1998-03-24

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9019, 1231886, 1231888, 1231889, F01L 1300

Patent

active

057300925

ABSTRACT:
A valve system for an internal combustion engine includes a valve member having a head and a stem extending from the head, a seal ring on the valve member head, the seal ring being movable along an axis of the valve member and being capable of forming a seal with a valve seat of the engine, and an adjustment device on the valve member for moving the seal ring along the axis of the valve member to change lift of the valve member. The adjustment device moves the seal ring in response to temperature changes.

REFERENCES:
patent: 2631577 (1953-03-01), Carter
patent: 3911875 (1975-10-01), Ysberg
patent: 4164957 (1979-08-01), Goloff
patent: 4187807 (1980-02-01), Cemenska et al.
patent: 5351662 (1994-10-01), Dopson et al.
patent: 5531193 (1996-07-01), Nakamura

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