NOISE/VIBRATION REDUCTION CONTROL
First Claim
1. A method of mitigating or adjusting an NVH characteristic of a vehicle having an engine capable of skip fire operation, the method comprising:
- operating the engine in a skip fire mode; and
actively controlling a device that is not a part of the engine to alter an NVH characteristic of the vehicle in a desired manner based at least in part on a skip fire characteristic.
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Accused Products
Abstract
In one aspect, a system for reducing noise or vibration generated by an internal combustion engine is described. An engine controller is arranged to generate firing information suitable for operating the working chambers of the engine in a skip fire manner to deliver a desired amount of torque. A noise/vibration reduction unit is arranged to help reduce noise or vibration based on the firing information. The noise/vibration controller actively controls a device that is not a part of the engine to alter an NVH characteristic of the vehicle in a desired manner based at least in part on a skip fire characteristic.
120 Citations
40 Claims
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1. A method of mitigating or adjusting an NVH characteristic of a vehicle having an engine capable of skip fire operation, the method comprising:
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operating the engine in a skip fire mode; and actively controlling a device that is not a part of the engine to alter an NVH characteristic of the vehicle in a desired manner based at least in part on a skip fire characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system for reducing at least one of noise and vibration generated by an internal combustion engine during skip fire operation of the engine, the engine having a plurality of working chambers and a skip fire engine controller arranged to direct skip fire operation of the engine, the system comprising:
a NVH reduction unit arranged to mitigate an NVH characteristic associated with the skip fire operation of the engine based at least in part on an operational skip fire characteristic, by actively controlling a device that is not a part of the engine. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
Specification