Method and apparatus for the control of valve operations in inte

Details Method and apparatus for the control of valve operations in inte Method and apparatus for the control of valve operations in inte

1987-10-08

1990-12-18

Cross, E. Rollins

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123 9016, 123 9044, 123308, 123315, F02B 7700

Patent

active

RE0334995

ABSTRACT:
An apparatus and a method for controlling the operation of intake and exhaust valves of an internal combustion engine having a plurality of intake and exhaust valves for each cylinder to provide an optimum engine output at all operating speeds. When the engine is rotating at a low speed, a part of both of the intake and exhaust valves are rendered inoperative. When the engine is rotating at a medium speed, all of the intake valves are made operative and a part of the exhaust valves are rendered inoperative. Finally, when the engine is rotating at a high speed, all of both of the intake and exhaust valves are rendered operative.

REFERENCES:
patent: 3234924 (1966-02-01), May
patent: 3991729 (1976-11-01), Notaro
patent: 4285310 (1981-08-01), Takizawa et al.
patent: 4343268 (1982-08-01), Stang et al.
patent: 4354463 (1982-10-01), Otani et al.
patent: 4378765 (1983-04-01), Abermeth et al.
patent: 4442806 (1984-04-01), Matsuura et al.
patent: 4473047 (1984-09-01), Jakuba et al.

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