Post oxygen sensor performance diagnostic with minimum air flow
US8086392B2 · kind B2 · utility
9Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2009 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Jul 13, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D11/107
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine control system includes an oxygen (O2) sensor diagnostic module that diagnoses an O2 sensor and requests a minimum air per cylinder (APC). A throttle actuator module controls a throttle to adjust a mass air flow based on the minimum APC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.