Internal combustion engine having an electromagnetic valve drive mechanism and method for controlling the same
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHideyuki Nishida, Isao Matsumoto
Life of this patent
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Abstract
An internal combustion engine and method are capable of reducing a power consumption required to open an exhaust-side electromagnetic valve at a predetermined time. This internal combustion engine includes an electromagnetic valve drive mechanism that controls an exhaust valve of the internal combustion engine to open and close by using electromagnetic force generated in response to application of a magnetizing current, and a controller that controls the electromagnetic valve drive mechanism. The controller changes, under predetermined conditions, an open timing of the exhaust valve so as to reduce the power consumption of the electromagnetic valve drive mechanism.
Claims24
An internal combustion engine, comprising:
- an electromagnetic valve drive mechanism that controls an exhaust valve of the internal combustion engine to open and close by using an electromagnetic force generated by applicating of magnetizing current;
- and
- a controller that controls the electromagnetic valve drive mechanism, wherein the controller changes, under a predetermined condition, an open timing of the exhaust valve so as to reduce a power consumption of the electromagnetic valve drive mechanism.
A method for controlling an internal combustion engine, comprising the steps of:
- determining whether predetermined conditions are met;
- and
- changing an open timing of an exhaust valve so as to reduce a power consumption of an electromagnetic valve drive mechanism that opens the exhaust valve, when the predetermined conditions are met.
An internal combustion engine, comprising:
- an electromagnetic valve drive mechanism that controls an exhaust valve of the internal combustion engine to open and close by using an electromagnetic force generated by an application of magnetizing current;
- and
- controlling means for changing an open timing of the exhaust valve at a predetermined time.
An internal combustion engine, comprising:
- an electromagnetic valve drive mechanism that controls an exhaust valve of the internal combustion engine to open and close by using an electromagnetic force generated by an application of magnetizing current;
- and
- a controller that controls the electromagnetic valve drive mechanism, wherein the controller changes an open timing of the exhaust valve so as to reduce a power consumption of the electromagnetic valve drive mechanism when the internal combustion engine is operating in a state where at least one of a power and a current amount required to control the exhaust valve to open and close exceeds an amount that can be supplied to the electromagnetic valve drive mechanism.
Dependencies are inferred from the claim text.