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US 11,486,325 B2Granted
Injector control unit
AssigneeHitachi Astemo, Ltd.
InventorKoichi Tsukio
Life of this patent
Estimating the term…
Abstract
Provided is an injector control unit capable of preventing unintended fuel injection other than an engine drive period. The injector control unit includes a cutoff mechanism for cutting off current supply to the injector from at least the ignition OFF to the next ignition ON.
Claims7
An injector control unit comprising:
- a driver configured to drive an injector;
- a pre-driver configured to transmit a drive command to the driver;
- an arithmetic unit configured to transmit a control command to the pre-driver;
- and,
- a cutoff mechanism configured to:
- cut off current supply to the injector,
- when ignition is ON, start current supply to the injector after the arithmetic unit and the pre-driver are each normally started,
- when ignition is OFF, cut off current supply to the injector before operation of the arithmetic unit or the pre-driver is stopped,
- the driver includes a first driver connected to a battery voltage and a second driver connected to a boosted voltage, and the cutoff mechanism cuts off both a current from the first driver and a current from the second driver, and
- the cutoff mechanism controls cutting off the current from the first driver and the current from the second driver at independent timings.
7 more elements
An injector control unit comprising:
- a driver configured to drive an injector;
- a pre-driver configured to transmit a drive command to the driver;
- an arithmetic unit configured to transmit a control command to the pre-driver;
- and
- a cutoff mechanism configured to cut off current supply to the injector from at least an ignition OFF to a next ignition ON, wherein
- the driver includes a first driver connected to a battery voltage and a second driver connected to a boosted voltage, and the cutoff mechanism cuts off both a current from the first driver and a current from the second driver, and
- the cutoff mechanism controls cutting off the current from the first driver and the current from the second driver at independent timings.
4 more elements
Dependencies are inferred from the claim text.