Method and system for particulate filter regeneration
US10502151B2 · kind B2 · utility
3Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2017 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Feb 5, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods and systems are provided for expediting exhaust particulate filter regeneration. In one example, an engine controller may generate an exotherm at the filter by operating engine cylinders with air-fuel imbalance while using electric assist to a turbocharger to meet a torque demand and raise an intake airflow to enhance the effect of the exotherm. Once heated, the filter may be regenerated by flowing extra air to the exhaust via an air pump and injecting extra fuel to an exhaust passage via an exhaust injector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.