Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing – For oxygen or oxygen containing compound
Patent
1996-12-11
1998-11-10
Tung, T.
Electrolysis: processes, compositions used therein, and methods
Electrolytic analysis or testing
For oxygen or oxygen containing compound
204424, 204425, 204426, 204428, G01N 27407
Patent
active
058338365
ABSTRACT:
To achieve change-over from detection of an internal resistance of an oxygen sensor S to detection of a threshold current effectively in a short time, a positive desired voltage for measuring a threshold current is applied to an oxygen sensor S to detect the threshold current and then a negative voltage for measuring a temperature is applied to the oxygen sensor S for a short time to detect an internal resistance of the oxygen sensor. After that, when the voltage applied to the oxygen sensor S is restored to a positive desired voltage for measuring the threshold current, by applying a voltage higher than this positive desired voltage temporarily to the oxygen sensor S, discharge or recharge of electric charges due to electrostatic capacitance components of the oxygen sensor S is completed quickly to reduce the time required for convergence to the threshold current when the voltage is changed. As a result, it is possible to reduce the time during which the threshold current cannot be detected.
REFERENCES:
patent: 4472262 (1984-09-01), Kondo et al.
patent: 4543176 (1985-09-01), Harada et al.
patent: 4586476 (1986-05-01), Asayama et al.
patent: 4626338 (1986-12-01), Konde et al.
patent: 5391284 (1995-02-01), Hotzel et al.
patent: 5405521 (1995-04-01), Nakamori et al.
U.S. application No. 08/605,782, Feb. 22,1996, Mizoguchi et al.
Haseda Satoshi
Mizoguchi Tomomichi
Takami Masayuki
Denso Corporation
Tung T.
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