| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection control device in which a dynamic range of a fuel control amount is widened and worthless power consumption is prevented. SOLUTION: The fuel injection control device comprises: a fuel pressure regulator means 4 for regulating fuel pressure Pf; various sensors 3 including a fuel pressure sensor; an injector driving means 5A for driving to open a valve of an injector 2; an fuel injection control means 1A for controlling the fuel pressure regulator means 4 and the injector driving means 5A depending on an operation state. The fuel injection control means 1A controls an exiting current ia and an exiting time of the injector to control a time of driving to open the valve, by including a holding current value control portion 16A for variably setting an injector holding current value iha depending on the fuel pressure to variably and minimally set the injector holding current value iha to be smaller as the fuel pressure is lower.
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