Title:
ガスセンサシステムの異常診断方法、及び、ガスセンサシステム
Document Type and Number:
Japanese Patent JP4704957
Kind Code:
B2
Abstract:
A gas sensor system includes a gas sensor capable of producing an output signal responsive to the concentration of a specific gas component in measurement gas, a gas concentration determination device that makes electrical connections to the gas sensor and determines the concentration of the specific gas component according to the output signal of the gas sensor, a failure detection device that detects a potential failure in any one of the electrical connections, a sensor temperature determination device that judges whether the gas sensor has been cooled to a predetermined temperature or lower with reference to a sensor temperature parameter and a failure identification device that, when the gas sensor has been cooled to the predetermined temperature or lower, outputs a diagnosis signal to the gas sensor, measures potentials of the electrical connections under the diagnosis signal and identifies in which of the electrical connections the potential failure is occurring based on the measured potentials.
Inventors:
Yoshinori Inoue
Hiroshi Inagaki
Tomonori Uemura
Hiroshi Inagaki
Tomonori Uemura
Application Number:
JP2006146087A
Publication Date:
June 22, 2011
Filing Date:
May 26, 2006
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
G01N27/26; G01N27/419
Domestic Patent References:
| JP2006047278A | ||||
| JP2006208363A | ||||
| JP2002257772A |
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office