Method for controlling the heating of an oxygen sensor for an engine of a vehicle
US7189948B2 · kind B2 · utility
4Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2003 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Nov 14, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1495
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A lower limit of a heating factor for heating control of an oxygen sensor is adjusted on the basis of the heating factor, a P-jump delay time calculated based on an output voltage of the oxygen sensor, and a diagnosis index of the oxygen sensor, and thereby an engine may be stably controlled even if the oxygen sensor is aged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.