发明授权
US07820949B2 Method of starting, stopping and operating gas sensor with built-in heater
有权
使用内置加热器启动,停止和运行气体传感器的方法
- 专利标题: Method of starting, stopping and operating gas sensor with built-in heater
- 专利标题(中): 使用内置加热器启动,停止和运行气体传感器的方法
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申请号: US10514158申请日: 2003-05-12
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公开(公告)号: US07820949B2公开(公告)日: 2010-10-26
- 发明人: Takashi Sasaki , Hiroyuki Abe , Tsuyoshi Eguchi , Akihiro Suzuki
- 申请人: Takashi Sasaki , Hiroyuki Abe , Tsuyoshi Eguchi , Akihiro Suzuki
- 申请人地址: JP Tokyo
- 专利权人: Honda Motor Co., Ltd.
- 当前专利权人: Honda Motor Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Lahive & Cockfield, LLP
- 代理商 Anthony A. Laurentano, Esq.
- 优先权: JP2002-139094 20020514
- 国际申请: PCT/JP03/05898 WO 20030512
- 国际公布: WO03/096001 WO 20031120
- 主分类号: H05B1/02
- IPC分类号: H05B1/02 ; H01M8/00 ; G01N7/00
摘要:
A control apparatus for a gas sensor with a built-in heater is provided which can prevent damage to, deterioration of, and reduction in accuracy of detection of, a gas sensor. When an ignition switch is turned ON, supply of electricity to a heater 27 starts, and when the temperature in the vicinity of a gas sensor 15 (gas temperature of gas detection chamber 24) Ts becomes greater than a predetermined temperature #Ti at start, or when a predetermined electricity supply time after start of supply of electricity to the heater 27 has elapsed, the gas sensor 15 is started. The flow of off-gas is started simultaneously with starting of the gas sensor 15, or after starting. When the ignition switch is turned OFF, the flow of off gas is stopped, and the supply of electric power to the gas sensor 15 is stopped. In a state where a temperature difference ΔT between the gas temperature Ts inside the gas detection chamber 24, and an upstream gas temperature Tg is maintained within a predetermined range, the supply of electricity to the heater 27 is stopped after a predetermined time has elapsed after operation of the gas sensor 15 is stopped.