发明申请
- 专利标题： ABNORMALITY DETERMINATION APPARATUS AND ABNORMALITY DETERMINATION METHOD FOR COOLANT TEMPERATURE SENSOR, AND ENGINE COOLING SYSTEM
- 专利标题（中）： 冷却温度传感器和发动机冷却系统的异常判定装置和异常判定方法
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申请号： US13879669申请日： 2011-11-08
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公开(公告)号： US20130213600A1公开(公告)日： 2013-08-22
- 发明人: Tatsuki Saitoh
- 申请人： Tatsuki Saitoh
- 申请人地址： JP Toyota-shi, Aichi-ken
- 专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人地址： JP Toyota-shi, Aichi-ken
- 优先权： JP2010-253208 20101111
- 国际申请： PCT/IB2011/002627 WO 20111108
- 主分类号： F01P11/18
- IPC分类号： F01P11/18 ; F01P7/16
摘要：
A coolant temperature sensor abnormality determination apparatus opens a changeover valve to increase the temperature of a coolant in a heater passageway if the amount of increase of the detected heater inlet coolant temperature value obtained when the intake air amount of an engine becomes equal to or greater than a predetermined value is small. Then, if the amount of increase in the detected heater inlet coolant temperature value after the changeover valve opens is greater than or equal to the predetermined value, the apparatus determines that the heater inlet coolant temperature sensor is normal. If the amount of increase in the detected heater inlet coolant temperature value is smaller than the predetermined value, the apparatus determines that the heater inlet coolant temperature sensor is abnormal.
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