Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Reexamination Certificate
2006-03-07
2006-03-07
Bastianelli, John (Department: 3751)
Valves and valve actuation
Electrically actuated valve
Remote or follow-up control system for electrical actuator
C123S090110
Reexamination Certificate
active
07007920
ABSTRACT:
A control method with variable feedback gain for energization of an electro-magnetically driven intake/exhaust valve of an internal combustion engine increases opening and closing speeds of the intake/exhaust valve driven with electromagnets having small capacity and brings the final speed of the opening and closing action of the valve close to zero. A target moving speed of the armature relative to the electromagnets is determined dependent upon a spacing distance of the armature from the electromagnet; at least a part of energization of the electro-magnetically driven valve is controlled through feedforward control so as to make an actual moving speed of the armature relative to the electromagnets in conformity with the target moving speed while at least the other part of the energization is controlled through feedback control based upon a deviation of the actual moving speed from the target moving speed.
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Katsumata Shoji
Matsumoto Isao
Mizuta Tametoshi
Nishida Hideyuki
Ogiso Makoto
Bastianelli John
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
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