Internal-combustion engines – Poppet valve operating mechanism – Electrical system
Patent
1989-10-31
1991-09-24
Okonsky, David A.
Internal-combustion engines
Poppet valve operating mechanism
Electrical system
F01L 904
Patent
active
050505432
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 electromagnetic actuator means is controlled depending on the rotational speed of the engine such that the duration in which the intake and exhaust valves are open will be smaller when the engine rotational speed is lower and larger when the engine rotational speed is higher. With this arrangement, the intake and exhaust efficiencies are increased in the full range of engine rotational speeds.
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Isuzu Motors Limited
Lo Weilun
Okonsky David A.
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