Fueling control system
US6567738B2 · kind B2 · utility
47Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Oct 12, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P5/1504
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for controlling air-fuel ratio of an engine coupled to an emission control device uses an upstream linear exhaust gas sensor and a switching downstream exhaust gas sensor. During stoichiometric operation, both sensors are used for feedback control. During operation away from stoichiometry, the downstream sensor feedback is disabled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.