Method and system for optimizing purge of exhaust gas constituent stored in an emission control device
US6691020B2 · kind B2 · utility
2Cited by
157References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2001 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Jun 26, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and system for optimizing the purging of a constituent gas of a vehicle engine's generated exhaust gas from an emission control device is disclosed wherein the amplitude of the output signal generated by a downstream switching oxygen sensor, and the time response of the sensor, is used to iteratively adjust a current purge time to obtain an optimized purge time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.