- 专利标题: Temperature control apparatus for humidity sensor
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申请号: US10322470申请日: 2002-12-19
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公开(公告)号: US07062968B2公开(公告)日: 2006-06-20
- 发明人: Masaki Ueno , Kei Machida , Tetsuo Endo , Hideharu Yamazaki
- 申请人: Masaki Ueno , Kei Machida , Tetsuo Endo , Hideharu Yamazaki
- 申请人地址: JP Tokyo
- 专利权人: Honda Giken Kogyo Kabushiki Kaisha
- 当前专利权人: Honda Giken Kogyo Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Westerman, Hattori, Daniels & Adrian, LLP
- 优先权: JP2001-390147 20011221
- 主分类号: G01N27/04
- IPC分类号: G01N27/04
摘要:
A temperature control apparatus for a humidity sensor is provided for preventing impurities from sticking on a sensor element, while protecting the sensor element from cracking due to the humidity sensor heated by a heater in the presence of condensation, to maintain a high detection accuracy of the humidity sensor. The temperature control apparatus is configured to control the temperature of a sensor element of a humidity sensor disposed in an exhaust passage of an internal combustion engine for detecting the humidity within the exhaust passage. The temperature control apparatus comprises a heater for heating the sensor element, a temperature sensor for detecting the temperature of the sensor element, and an ECU for controlling a heating amount of the heater to bring the detected temperature of the sensor element to a first predetermined temperature during an operation of the internal combustion engine.
公开/授权文献
- US20030115943A1 Temperature control apparatus for humidity sensor 公开/授权日:2003-06-26