Variable valve actuation apparatus

Details Variable valve actuation apparatus Variable valve actuation apparatus

1998-07-01

1999-11-02

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9036, F01L 1300

Patent

active

059750367

ABSTRACT:
A variable valve actuation apparatus for engine cylinder valves comprises a main rocker arm having an end portion for driving association with a cylinder valve. The main rocker arm supports a sub-rocker arm. A lost motion mechanism is between the main rocker and sub-rocker arms. The main rocker arm is formed with a plunger seat. The plunger seat includes a bearing surface on which a plunger of the lost motion mechanism rests. Further, the plunger seat includes gutters for discharging lubricant oil.

REFERENCES:
patent: 4151817 (1979-05-01), Mueller
patent: 5203289 (1993-04-01), Hara et al.
patent: 5297516 (1994-03-01), Hara
patent: 5570664 (1996-11-01), Nohara
patent: 5701857 (1997-12-01), Hara
patent: 5794576 (1998-08-01), Hara et al.

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