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    GLOW PLUG DIAGNOSIS METHOD AND DEVICE FOR CONTROLLING DRIVING OF VEHICLE GLOW PLUG
    2.
    发明公开
    GLOW PLUG DIAGNOSIS METHOD AND DEVICE FOR CONTROLLING DRIVING OF VEHICLE GLOW PLUG 审中-公开

    公开(公告)号：EP2940288A4

    公开(公告)日：2018-01-10

    申请号：EP13866528

    申请日：2013-11-18

    申请人： BOSCH CORP

    发明人： TANAKA YUTAKA ,  TOYOSHIMA YASUO ,  TSUKAHARA SHUICHI ,  NAKAMURA TOMOHIRO

    IPC分类号： F02P19/02

    CPC分类号： F02P19/026 ,  F02P19/025 ,  F02P19/027

    摘要： Disclosed is a glow plug diagnosis method of being able to diagnose the aging or fault of a glow plug without being affected by cooling associated with air intake/exhaust or fuel injection, the method including: a step (S102) of energizing a glow plug 1 in a predetermined manner when a key switch 11 of a vehicle is turned on; and a step (S106) of measuring the resistance value of the glow plug 1 when the energization of the glow plug 1 is started, and the resistance value of the glow plug when the energization of the glow plug 1 is started and then a change in the resistance value is saturated, and of calculating a change in the resistance value over time as a resistance value gradient, in which it is determined that the glow plug 1 is normal when the resistance value gradient exceeds a predetermined first gradient reference value a, and it is determined that the glow plug 1 is faulty, and a warning lamp or the like is lighted when the resistance value gradient is less than a predetermined second gradient reference value b (S112 and S118).