| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection control device for enabling the energization of electromagnetic loads even when upstream terminals come into ground short circuits, while suppressing an increase in the manufacturing cost.SOLUTION: In a fuel injection control device 10, counter electromotive energy generated in corresponding solenoids 12a, 12b, 12c with the turn-off of driving switches 24 is recovered through parasitic diodes of recovery switches 25 corresponding to the solenoids into a capacitor 20. When ground short circuits occur in upstream terminals P1 electrically connected to the upstream sides of all solenoids, a control part 27 turns all driving switches off and turns the recovery switches on at timings for driving the solenoids to supply the energy accumulated in the capacitor through the recovery switches into the solenoids.SELECTED DRAWING: Figure 4 |
