Internal-combustion engines – Poppet valve operating mechanism – Electrical system
Reexamination Certificate
2005-07-26
2005-07-26
Huynh, Hai (Department: 3747)
Internal-combustion engines
Poppet valve operating mechanism
Electrical system
C123S346000, C251S129100
Reexamination Certificate
active
06920848
ABSTRACT:
It is an object of the present invention to provide a drive unit for a direct-acting valve for internal combustion engines by which a quiet internal combustion engine can be obtained with noise suppressed. This system comprises an inlet valve8arranged slidably near an inlet port4of an internal combustion engine12for driving the inlet port to open and close, an electromagnetic actuator1that drives the inlet valve to open and close, and a current control unit11that controls a driving current supplied to the electromagnetic actuator. The current control unit continuously supplies the driving current, having a controlled variable value, to the electromagnetic actuator based on the operation condition of the internal combustion engine.
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Huynh Hai
Mikuni Corporation
Wenderoth , Lind & Ponack, L.L.P.
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