Patent Number: 6,332,453

Title: Electromagnetic system fuel injection apparatus an internal combustion engine having an electromagnetic system fuel injection apparatus, and a drive circuit of an electromagnetic system fuel injection apparatus

Abstract: Using a control coil having a high response characteristic suited to valve opening and a hold coil suited to a hold to valve open during fuel injection using a small current, during the valve opening time, a high voltage is applied to the control coil suited to the valve opening operation and, during the time the valve is to be held open a low and stabilized voltage is applied to the hold coil. In a fuel injection apparatus, drive manner employed during a valve opening time and a valve hold time is optimized.

Inventors: Yamakado; Makoto (Tsuchiura, JP), Okamoto; Yoshio (Minori-machi, JP), Kadomukai; Yzo (Ishioka, JP), Tanabe; Yoshiyuki (Hitachinaka, JP), Kubo; Hiromasa (Yokohama, JP), Takahata; Toshio (Atsugi, JP), Tabuchi; Kenji (Hitachinaka, JP), Hamada; Yasunaga (Hitachinaka, JP)

Assignee: Hitachi, Ltd.

International Classification: F02D 41/20 (20060101); F02M 51/06 (20060101); F02M 51/00 (20060101); F02M 051/00 ()

Expiration Date: 12/25/2018