Invention Publication
- Patent Title: VERFAHREN ZUR BESTIMMUNG DER TEMPERATUR EINES MESSFÜHLERS
- Patent Title (English): Method for determining the temperature of a measurement sensor
- Patent Title (中): 一种用于确定传感器的温度
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Application No.: EP07821686.8Application Date: 2007-10-23
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Publication No.: EP2092317A1Publication Date: 2009-08-26
- Inventor: REINSHAGEN, Holger , DIEHL, Lothar
- Applicant: Robert Bosch GmbH
- Applicant Address: Postfach 30 02 20 70442 Stuttgart DE
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: Postfach 30 02 20 70442 Stuttgart DE
- Priority: DE102006053808 20061115
- International Announcement: WO2008058834 20080522
- Main IPC: G01N27/406
- IPC: G01N27/406 ; G01K7/18 ; G01K7/26 ; G05D23/24
Abstract:
A method for determining the temperature of a measurement sensor (10) for determining an oxygen concentration in gas mixtures, in particular in exhaust gases of internal combustion engines, wherein a detection voltage (UD) which corresponds to the oxygen concentration and is provided by a Nernst measuring cell (12) is evaluated, and the measurement sensor is regulated to an operating temperature using a heating device (50), is characterized in that the internal resistance of the Nernst measuring cell (12) is determined in a first temperature range and is used to infer the temperature of the Nernst measuring cell, and in that the internal resistance of the heating device (50) is determined in a second temperature range and is used to infer the temperature of the Nernst measuring cell.
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