发明申请
- 专利标题： Fluid flowmeter and engine control system using the same
- 专利标题（中）： 流体流量计和发动机控制系统使用相同
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申请号： US11206733申请日： 2005-08-19
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公开(公告)号： US20060096305A1公开(公告)日： 2006-05-11
- 发明人: Keiji Hanzawa , Masahiro Matsumoto , Hiromichi Yamada , Hiroshi Nakano , Hiroyasu Sukesako
- 申请人： Keiji Hanzawa , Masahiro Matsumoto , Hiromichi Yamada , Hiroshi Nakano , Hiroyasu Sukesako
- 优先权： JP2004-327275 20041111
- 主分类号： F25B39/04
- IPC分类号： F25B39/04
摘要：
An air temperature sensor sensing an air temperature, supplied with a pulse signal as a driving signal from a pulse signal source, senses an air temperature based on the pulse signal. While the air temperature sensor is self-heated during an electrical current supplying time period by the pulse signal, it is cooled during an electrical current halting time period. Accordingly, the self-heating of the air temperature sensor by the driving signal is suppressed, and a thermal effect on air flow rate sensing elements disposed in an air flow downstream side of the air temperature sensor is also reduced.
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