Cylinder imbalance correction system and method
US11168627B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Nov 18, 2019 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Nov 18, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Systems and methods are provided for determining and correcting air/fuel imbalance between cylinders of an internal combustion engine. A deactivation strategy is determined and implemented. An evaluation is made of whether the engine is operating with an air/fuel imbalance between cylinders. When an imbalance is identified, an alternate deactivation strategy is implemented. Based on outcomes of the alternate deactivation strategy, a source cylinder of the air/fuel imbalance is identified, and fuel flow to the source cylinder is corrected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.