Method and system for pulsed engine water injection
US10267243B2 · kind B2 · utility
2Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2016 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Apr 28, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/104
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for learning a transport delay for individual cylinders that is associated with maldistribution of water among cylinders during a water injection event. Differences in knock intensity between individual cylinders, following a water injection, are used to identify water maldistribution. Differences in the amount and timing of an engine dilution effect following a manifold water injection are learned via an intake oxygen sensor and used to reduce cylinder-to-cylinder imbalance in water delivery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.