Thermal measuring and testing – Temperature measurement – Combined with diverse art device
Reexamination Certificate
2005-09-06
2005-09-06
Verbitsky, Gail (Department: 2859)
Thermal measuring and testing
Temperature measurement
Combined with diverse art device
C374S001000, C374S045000, C702S130000, C702S099000, C123S672000
Reexamination Certificate
active
06939037
ABSTRACT:
For achieving a highest possible measuring accuracy of a circuit for measuring the internal resistance of an exhaust-gas sensor, a method and a circuit for measuring the internal resistance R1(10) of an electrochemical cell (12) are provided for determining the temperature of an exhaust-gas sensor, especially of a motor vehicle. The circuit is provided with the objective to improve the control to a constant temperature to therefore also improve the performance of the exhaust-gas sensor. A measurement current I_Mess (20) is applied to the internal resistance R1(10) of the electrochemical cell (12) and a resulting first voltage is detected. A switchover to a reference resistor R2takes place from time to time or at regular time intervals. With a switchover to the reference resistor R2, the resulting second voltage is stored and thereafter is applied as a reference value for the measurement of the internal resistance R1(10). The switchover (18) to the reference resistor R2takes place, for example, via force/sense lines.
REFERENCES:
patent: 3886932 (1975-06-01), Suessmilch
patent: 4210024 (1980-07-01), Ishiwatari et al.
patent: 4841934 (1989-06-01), Logothetis et al.
patent: 5219228 (1993-06-01), Ker et al.
patent: 5313121 (1994-05-01), Cianci et al.
patent: 5414352 (1995-05-01), Tanase
patent: 5519304 (1996-05-01), Andrieu et al.
patent: 5524472 (1996-06-01), Hotzel
patent: 5655305 (1997-08-01), Fletcher
patent: 5941927 (1999-08-01), Pfitz
patent: 6096186 (2000-08-01), Warburton
patent: 6136170 (2000-10-01), Inoue et al.
patent: 6294075 (2001-09-01), Poggio et al.
patent: 6341599 (2002-01-01), Hada et al.
patent: 6397659 (2002-06-01), Mizoguchi et al.
patent: 6398407 (2002-06-01), Hashimoto
patent: 6467954 (2002-10-01), Honda et al.
patent: 6533921 (2003-03-01), Miyata et al.
patent: 6789533 (2004-09-01), Hashimoto et al.
patent: 2003/0034534 (2003-02-01), Thakur
patent: 35 33 197 (1987-03-01), None
patent: 251 200 (1987-11-01), None
patent: 38 36 045 (1990-04-01), None
patent: 1 001 261 (2000-05-01), None
Blessing Dietmar
Haag Wilhelm
Hilgenberg Bernd
Junginger Erich
Molwitz Frank
Ottesen Walter
Robert & Bosch GmbH
Verbitsky Gail
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