| 摘要 |
PROBLEM TO BE SOLVED: To provide an injector driving device for discriminating a valve opening starting timing by directly reading an injector driving current and for suppressing the dispersion of an injection fuel amount by correcting a drive signal to match various conditions. SOLUTION: The injector driving device comprises an injector 3 connected to a battery 4, a power transistor 2 connected to the injector, a control circuit 1A for outputting the drive signal V1 to control the turn-on and -off of the power transistor, driving current detecting means R3 for detecting the injector driving current, and a valve opening discriminating circuit 5 for discriminating the valve opening starting timing for the injector in accordance with a detection value for the injector driving current. The control circuit contains operating means for correcting and operating a time for the injector to be driven via the drive signal in accordance with a valve opening discrimination signal V4 from the valve opening discriminating circuit.
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