发明名称 |
A preignition detection apparatus |
摘要 |
<p>The invention provides a preignition detection device that is capable of detecting a preignition condition (PI) in an incipient stage. Engine vibration is detected by a vibration sensor 113 and read into a controller 12. When the length of a period during which abnormal vibration of a magnitude greater than a predetermined level occurs in succession has exceeded a predetermined length of period, or when the frequency of occurrence of abnormal vibration during a predetermined period is greater than a predetermined value and the cumulative sum of the frequencies of occurrence of abnormal vibration has exceeded a predetermined value, then it is determined that preignition has occurred. Here, a determination value, based on which the occurrence of preignition is determined, can be varied to prevent erroneous decisions and to improve responsiveness. <IMAGE></p> |
申请公布号 |
EP0819925(A2) |
申请公布日期 |
1998.01.21 |
申请号 |
EP19970401555 |
申请日期 |
1997.07.02 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
KATSUSHI, HASHIZUME;KAZUHISA, MOGI |
分类号 |
G01M15/04;F02D45/00;F02P5/152;F02P5/153;G01L23/22;G01M15/12;(IPC1-7):G01L23/22;G01M15/00 |
主分类号 |
G01M15/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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