Valve control system for internal combustion engine

Details Valve control system for internal combustion engine Valve control system for internal combustion engine

1991-03-14

1991-12-31

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

123 9015, F01L 904, F01L 134

Patent

active

050762222

ABSTRACT:
A control system for controlling intake and exhaust valves of an internal combustion engine includes an electromagnetic actuator means for electromagnetically operating the intake and exhaust valves. The electric power to be supplied to the electromagnetic actuator means is controlled depending on the rotational speed of the engine such that it will be smaller when the engine rotational speed is lower and larger when the engine rotational speed is higher, so that the area in which the intake and exhaust valves are open increases as the engine rotational speed increases. With this arrangement, the intake and exhaust efficiencies are increased in the full range of engine rotational speeds.

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