摘要 |
An object of this disclosure is to provide a fuel injection device that can reliably detect an operation timing of a valve body, that is, a valve opening timing with high accuracy. The current of an electromagnetic valve reaches I2 at time t3, an FET 201 and an FET 221 are turned on, and a battery voltage VB is applied to the electromagnetic valve until time t5 is reached. The amount of displacement of the valve body reaches a target amount of control lift at time t4 between time t3 and time t5, that is, a movable core 304 comes into contact with a fixed core 301. The detection of the valve opening timing is performed during the period from time t3 to time t5. |
申请人 |
HITACHI AUTOMOTIVE SYSTEMS, LTD. |
发明人 |
HATANAKA, AYUMU;KUSAKABE, RYO;ABE, MOTOYUKI;AONO, TOSHIHIRO;HIROTSU, TEPPEI;SAKAMOTO, HIDEYUKI;FUKUDA, TAKAO;EHARA, HIDEHARU;TOYOHARA, MASAHIRO;NISHIOKA, AKIRA;HORI, TOSHIO;AIKI, KIYOSHI |