发明申请
- 专利标题： Ion current detecting device in internal combustion engine
- 专利标题（中）： 内燃机离子电流检测装置
-
申请号： US11331025申请日： 2006-01-13
-
公开(公告)号： US20060158195A1公开(公告)日： 2006-07-20
- 发明人: Koji Ando
- 申请人： Koji Ando
- 申请人地址： JP Kariya-city
- 专利权人： DENSO CORPORATION
- 当前专利权人： DENSO CORPORATION
- 当前专利权人地址： JP Kariya-city
- 优先权： JP2005-7464 20050114; JP2005-271952 20050920
- 主分类号： F02P17/00
- IPC分类号： F02P17/00
摘要：
An ion current detecting device includes an ion current detecting unit which detects ion current based on combustion ion generated after an ignition which is performed in a combustion chamber and an amplifier unit which amplifies ion current detected by the ion current detecting unit. The amplifier unit has an amplification rate which is set so that an output amplified ion current varies nonlinearly with ion current of the ion current detecting unit. Thus, the amplifier unit enables the amplification rate to vary according to a level of ion current. Therefore, ion current can be detected correctly even if a minute ion current is generated when the spark plug malfunctions etc., and even if ion current becomes higher.
公开/授权文献
- US07164271B2 Ion current detecting device in internal combustion engine 公开/授权日：2007-01-16