Method for calibrating a lambda sensor and internal combustion engine
US8108130B2 · kind B2 · utility
6Cited by
7References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | May 5, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/0418
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In the calibration of a lambda sensor (26), inaccuracies occur during a fuel cut-off overrun phase depending on the temperature. A method is proposed for correcting an output signal of a lambda sensor (16) of an internal combustion engine (1), having the following steps: detection of a fuel cut-off overrun phase of the internal combustion engine (1), sensing of an exhaust-gas composition by the lambda sensor (16) during the fuel cut-off overrun phase, sensing of a temperature which represents a measure of the intake air of the internal combustion engine (1), calibration of the lambda sensor (16) based on the second temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.