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    Spark plug heater control system for internal combustion engine
    51.
    发明授权
    Spark plug heater control system for internal combustion engine 失效
    内燃机火花塞加热器控制系统

    公开(公告)号：US5230309A

    公开(公告)日：1993-07-27

    申请号：US974024

    申请日：1992-11-10

    申请人： Toshiyuki Suga ,  Hiroki Kodama ,  Shinichi Kitajima ,  Yoshihiko Kobayashi

    发明人： Toshiyuki Suga ,  Hiroki Kodama ,  Shinichi Kitajima ,  Yoshihiko Kobayashi

    IPC分类号： F02B1/04 ,  F02N19/08 ,  F02P13/00 ,  H01T13/18

    CPC分类号： F02N19/08 ,  F02P13/00 ,  H01T13/18 ,  F02B1/04

    摘要： A system for controlling heater mounted on a spark plug which ignites the air-fuel mixture in the combustion chamber of an internal combustion chamber. The heater-on time is determined such that it decreases with increasing engine temperature and increasing alcohol concentration. Current supplied to the heater is also determined such that it increases with increasing alcohol concentration and decreases with increasing engine temperature. Therefore, droplets at the spark plug caused by high alcohol concentration fuel can be removed while eliminating carbon fouling. The engine startablity can thus been improved without shorting the service life of the spark plug. Moreover, fuel injection amount is reduced so as not another fuel be deposited on a droplet fuel which is still being present. The heater is furthermore kept off when a starter motor is turning to supply sufficient power to the motor.

    摘要翻译： 一种用于控制安装在火花塞上的加热器的系统，该火花塞点燃内燃室的燃烧室中的空气燃料混合物。 加热器开启时间被确定为随着发动机温度的升高和酒精浓度的增加而减小。 供应给加热器的电流也被确定为随着酒精浓度的增加而增加，并随着发动机温度的升高而降低。 因此，可以除去高酒精浓度燃料引起的火花塞处的液滴，同时消除碳污染。 因此可以改善发动机的起动性，而不会使火花塞的使用寿命短暂。 此外，燃料喷射量减少，从而不会将另外的燃料沉积在仍然存在的液滴燃料上。 此外，当起动电动机转动以向电动机提供足够的动力时，加热器进一步保持关闭。