Controller system and method for selecting a firing fraction for a skip fire controlled internal combustion engine based at least on non-drive train levels of noise, vibration and harshness
US10519876B2 · kind B2 · utility
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59References
21Claims
0Family size
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Key dates
| Filing date | Jul 13, 2018 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Jul 13, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/18
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and controllers are described that facilitate the determination of an operational skip fire firing fraction for an engine based at least in part noise levels and/or vehicle vibration levels that are not induced by engine operation. In some embodiments, the firing fraction is determined based at least in part of noise or vibrations associated with road roughness and/or cabin noise levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.