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AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHideyuki Nishida, Isao Matsumoto, Kazuhiko Shiratani, Shoji Katsumata, Tametoshi Mizuta, Keiji Yoeda, Makoto Ogiso
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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.
A method of controlling energaization of an electro-magnetically driven valve having electromagnets and an armature which is attracted to the electromagnets and thereby moving a valve body to either of an opened position or a closed position, comprising:
A method of controlling energaization of an electro-magnetically driven valve having electromagnets and an armature which is attracted to the electromagnets and thereby moving a valve body to either of an opened position or a closed position, comprising:
Dependencies are inferred from the claim text.