Internal-combustion engines – Poppet valve operating mechanism – Electrical system
Patent
1989-12-26
1990-11-27
Myhre, Charles J.
Internal-combustion engines
Poppet valve operating mechanism
Electrical system
25112901, 361156, F01L 904
Patent
active
049728105
ABSTRACT:
A valve driving apparatus includes a permanent magnet connectd to a suction/exhaust valve and an electromagnet secured to the engine body, and is adapted to drive the valve by attractive and repulsive electromagnetic forces which act between the electromagnet and the permanent magnet. The electromagnet ordinarily is supplied with electric power from a battery. However, if a strong electromagnetic force is to be applied to the suction/exhaust valve, the electromagnet is supplied with charge from a capacitor charged beforehand by the battery. Control is exercised to increase or decrease, in dependence upon the engine rpm or load, the amount by which the electromagnet is energized by the battery and the amount by which the capacitor is charged.
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Isuzu Motors Limited
Lo Weilun
Myhre Charles J.
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