Valve operation changing system of internal combustion engine

Details Valve operation changing system of internal combustion engine Valve operation changing system of internal combustion engine

1983-05-31

1985-05-14

Cline, William R.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9044, 123198F, F01L 134

Patent

active

045165424

ABSTRACT:
A valve operation changing system of an internal combustion engine comprises first and second cams formed on a camshaft. The first and second cams are different in cam profile from each other. At least one of the cams has a plurality of cam faces which are axially separate from each other. Additionally, a rocker arm is provided with a follower section contactable with the cam face of the first and second cams. The follower section has a plurality of contact faces at least one of which is contactable with the cam face of the first cam when the rocker arm is in a first position, while with the cam face of the second cam when the rocker arm is in a second position, thereby reducing the moving distance of the rocker arm to improve the response in valve timing change of an engine valve.

REFERENCES:
patent: 3878822 (1975-04-01), Beal
patent: 4151817 (1979-05-01), Mueller
patent: 4182289 (1980-01-01), Nakajima et al.
patent: 4354460 (1982-10-01), Mae et al.

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