Vehicle having an emission control device diagnostic computer
US7007458B2 · kind B2 · utility
15Cited by
16References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2003 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Jan 28, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A computer controlled diagnostic system is described that monitors catalyst activity of an upstream catalyst using a sensor located downstream of a downstream catalyst. In this way, a system configuration is achieved that allows for diagnosis as well as improved air-fuel ratio control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.