Temperature Sensing Coordination with Engine Valve Timing Using Electric Valve Actuator
First Claim
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1. A method of operation for an engine including an electrically actuated engine valve in a cylinder head, with at least an actuator coupled to the valve, the method comprising:
- applying a potential to generate a current indicative of temperature in the actuator at least partially during a substantially non-moving condition of the actuator;
adjusting a timing of the application of the potential based on valve location in the cylinder head.
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Abstract
A method of operation for an engine including an electrically actuated engine valve in a cylinder head, with at least an actuator coupled to the valve, the method including applying a potential to generate a current indicative of temperature in the actuator at least partially during a substantially non-moving condition of the actuator and adjusting a timing of the application of the potential based on valve location in the cylinder head.
46 Citations
20 Claims
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1. A method of operation for an engine including an electrically actuated engine valve in a cylinder head, with at least an actuator coupled to the valve, the method comprising:
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applying a potential to generate a current indicative of temperature in the actuator at least partially during a substantially non-moving condition of the actuator; adjusting a timing of the application of the potential based on valve location in the cylinder head. - View Dependent Claims (2, 3, 4)
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5. A method of operation for an engine including a plurality of electrically actuated engine valves, each with at least an actuator, the method comprising:
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applying a first potential to generate a first current in a first actuator at least partially during a substantially non-moving condition of the first actuator, where the first potential is applied at a first crankshaft timing; applying a second potential to generate a second current in a second, different, actuator at least partially during a substantially non-moving condition of the second actuator; and adjusting a timing of application of the second potential to be different from the first based on a difference between a cylinder head location of the second actuator compared to a cylinder head location of the first actuator or based on an actuator type. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of operation for an engine including a plurality of electrically actuated engine valves, each with at least an actuator, the method comprising:
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applying a first potential to generate a first current in a first actuator at least partially during a substantially non-moving condition of the first actuator, where the first potential is applied at a first crankshaft timing; applying a second potential to generate a second current in a second, different, actuator at least partially during a substantially non-moving condition of the second actuator; adjusting a timing of application of the second potential to be different from the first based on a difference between cylinder head location of the second actuator compared to cylinder head location of the first actuator and based on an actuator type; and providing first and second temperature indications respectively based on the first and second currents. - View Dependent Claims (18, 19, 20)
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Specification