SYSTEM AND METHOD FOR CONTROLLING SPARK TIMING WHEN CYLINDERS OF AN ENGINE ARE DEACTIVATED TO REDUCE NOISE AND VIBRATION
First Claim
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1. A system comprising:
- a cylinder activation module that selectively deactivates and reactivates a cylinder of an engine based on a driver torque request; and
a spark timing module that, when the cylinder is deactivated, selectively increases an amount by which spark timing of at least one active cylinder of the engine is retarded based on noise and vibration generated by the engine when the cylinder is deactivated.
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Abstract
A system according to the principles of the present disclosure includes a cylinder activation module and a spark timing module. The cylinder activation module selectively deactivates and reactivates a cylinder of an engine based on a driver torque request. When the cylinder is deactivated, the spark timing module selectively increases an amount by which spark timing of at least one active cylinder of the engine is retarded based on noise and vibration generated by the engine when the cylinder is deactivated.
82 Citations
20 Claims
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1. A system comprising:
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a cylinder activation module that selectively deactivates and reactivates a cylinder of an engine based on a driver torque request; and a spark timing module that, when the cylinder is deactivated, selectively increases an amount by which spark timing of at least one active cylinder of the engine is retarded based on noise and vibration generated by the engine when the cylinder is deactivated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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selectively deactivating and reactivating a cylinder of an engine based on a driver torque request; and when the cylinder is deactivated, selectively increasing an amount by which spark timing of at least one active cylinder of the engine is retarded based on noise and vibration generated by the engine when the cylinder is deactivated. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification