Injection control device
AssigneeDenso Corporation
InventorsMakoto Shirakawa, Masashi Inaba, Hiroyuki Fukuda
Life of this patent
Estimating the term…
Abstract
An injection control device includes: an area correction unit that calculates an energization time correction amount when executing a current drive of the fuel injection valve to inject a fuel from the fuel injection valve; an estimation unit that independently calculates an estimated energization time correction amount; a comparison unit that compares the energization time correction amount c with the estimated energization time correction amount; and a first abnormality determination unit that determines that the energization time correction amount is abnormal.
Claims7
An injection control device comprising:
- an area correction unit that calculates an energization time correction amount by executing an area correction of current flowing through a fuel injection valve when executing a current drive of the fuel injection valve to inject a fuel from the fuel injection valve;
- an estimation unit that independently calculates an estimated energization time correction amount, which corresponds to the energization time correction amount calculated by the area correction unit;
- a comparison unit that compares the energization time correction amount calculated by the area correction unit with the estimated energization time correction amount calculated by the estimation unit;
- and
- a first abnormality determination unit that determines that the energization time correction amount calculated by the area correction unit is abnormal when a comparison result by the comparison unit is equal to or greater than a first predetermined abnormal value,
- wherein
- when the first abnormality determination unit determines that the energization time correction amount is abnormal, a fuel injection control is stopped.
Dependencies are inferred from the claim text.