Method and system for engine exhaust catalyst operations
US10273906B2 · kind B2 · utility
4Cited by
9References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 6, 2017 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Apr 12, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for controlling exhaust catalyst temperature during an engine cold-start by water injection. In one example, a method may include during the engine cold-start, injecting water into an intake of an engine based on the exhaust catalyst temperature and accumulating water molecules within an exhaust catalyst to generate heat within the exhaust catalyst. In this way, by generating and storing heat within the exhaust catalyst, the exhaust catalyst may be heated up rapidly, thus reducing catalyst light-off time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.