Electronic control device
AssigneeHitachi Automotive Systems, Ltd.
InventorKoichi TSUKIO
Life of this patent
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Abstract
Provided is an electronic control device capable of always achieving a desired injector injection amount by preventing a change in injector opening time regardless of a change (a decrease) of a power supply voltage for opening a valve of an injector. A precharge current amount at the time of precharge control is changed in a stepwise manner based on a voltage of the injector valve open power supply device 10 at the time of the precharge control.
Claims13
An electronic control device that supplies, to a fuel injection valve, a current for opening the fuel injection valve based on a voltage supplied by a power supply device and performs precharge control of supplying a current to the fuel injection valve before the current supply is performed, wherein
- the precharge control is performed based on a voltage of the power supply device when the precharge control is performed.
Dependencies are inferred from the claim text.