Variable valve event engine

Details Variable valve event engine Variable valve event engine

1980-04-22

1982-10-19

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9039, F01L 134

Patent

active

043544606

ABSTRACT:
A variable valve event engine has a plurality of cams with different cam profiles and can vary the operating characteristics of the valve by moving a rocker arm for selectively changing the cams in accordance with changes in the operating conditions of the engine. The engine further includes a spring urging member which causes a certain amount of energy to be retained in a spring for rapidly changing the cams. The engine has a detector for sensing the temperature of the lubricant utilized in a hydraulic member for moving the rocker arm so that the movement of the rocker arm is effected only when the lubricant temperature is higher than a predetermined temperature.

REFERENCES:
patent: 2484109 (1949-10-01), Meinecke
patent: 3878822 (1975-04-01), Beal
patent: 4182289 (1980-01-01), Nakajima et al.
patent: 4253434 (1981-03-01), Takizawa et al.
patent: 4258671 (1981-03-01), Takizawa et al.

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