Title:
METHOD TO ADAPT THE SIGNAL OF AN OXYGEN SENSOR DURING OVERRUN
Document Type and Number:
WIPO Patent Application WO/2011/038322
Kind Code:
A3
Abstract:
A system for compensating for changes in behavior of an oxygen sensor. In one embodiment, the system includes an oxygen sensor configured to produce an output indicative of an oxygen level in an exhaust stream produced by an internal combustion engine. An electronic control unit receives the output of the oxygen sensor and is configured to cause the internal combustion engine to operate in an overrun mode. The electronic control unit is programmed or otherwise configured to determine whether a change in oxygen level over time is approximately zero. When the change in oxygen level is approximately zero or near zero, the electronic control unit determines a compensation factor for the oxygen sensor.
Inventors:
BAHLO JAN M S (US)
TIMS DION (US)
WETTIG CHRISTINE I (US)
SEUFERT ULRICH (DE)
KIHYUN CHAI (US)
TIMS DION (US)
WETTIG CHRISTINE I (US)
SEUFERT ULRICH (DE)
KIHYUN CHAI (US)
Application Number:
PCT/US2010/050353
Publication Date:
May 19, 2011
Filing Date:
September 27, 2010
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
BAHLO JAN M S (US)
TIMS DION (US)
WETTIG CHRISTINE I (US)
SEUFERT ULRICH (DE)
KIHYUN CHAI (US)
BAHLO JAN M S (US)
TIMS DION (US)
WETTIG CHRISTINE I (US)
SEUFERT ULRICH (DE)
KIHYUN CHAI (US)
International Classes:
F02D41/14; F02D41/12; G01N27/417
Foreign References:
| EP1748173A2 | 2007-01-31 | |||
| US20080262704A1 | 2008-10-23 | |||
| EP1048834A2 | 2000-11-02 | |||
| GB2341687A | 2000-03-22 |
Attorney, Agent or Firm:
STETTNER, Derek, C. (100 East Wisconsin Avenue Suite 330, Milwaukee WI, US)
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