Variable valve event engine

Details Variable valve event engine Variable valve event engine

1978-06-20

1981-03-03

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9016, 123 9039, 123 906, 74559, 251251, F01L 134

Patent

active

042534348

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. In addition, the engine has a stopper guide positioned between two adjacent cams so that the changing of the cams can be effected while the crankshaft angle of the engine is within a predetermined range.

REFERENCES:
patent: 983150 (1911-01-01), Leoni
patent: 1614861 (1927-01-01), Bartlett
patent: 1688164 (1928-10-01), Tarrant
patent: 2197282 (1940-04-01), Walker
patent: 2397511 (1946-04-01), Schreck
patent: 2678641 (1954-05-01), Ryder
patent: 2934052 (1960-04-01), Longenecker
patent: 3273546 (1966-09-01), Von Arx
patent: 3878822 (1975-04-01), Beal

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