Method and system to improve cold-start catalyst light-off
US10138781B2 · kind B2 · utility
0Cited by
5References
14Claims
0Family size
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Key dates
| Filing date | Sep 1, 2016 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Jan 27, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Methods and systems are provided for expediting light-off of a catalyst during engine cold-start conditions by inhibiting rotation of the turbocharger shaft. In one example, a method may include inhibiting rotation of the turbocharger shaft during engine cold-start conditions until the catalyst is operating at a desired efficiency. The rotation of the shaft may be inhibited via either a passive or an active shaft locking mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.