Fuel injection control device
AssigneeDenso Corporation
InventorNaoki Mikami
Life of this patent
Estimating the term…
Abstract
A fuel injection system is provided with a pressure accumulator accumulating a high pressure fuel, a fuel pump supplying the high pressure fuel to the pressure accumulator, a fuel injector injecting the high pressure fuel, and a fuel pressure sensor detecting a fuel pressure in a fuel passage between the pressure accumulator and an injection port of the fuel injector. An ECU includes a fuel pressure obtaining portion which obtains the fuel pressure detected by the fuel pressure sensor, a differential value calculating portion which differentiates the fuel pressure obtained by the fuel pressure obtaining portion so as to calculate a fuel pressure differential value, and an end timing calculating portion which calculates an injection end timing at which the fuel injector terminates a fuel injection.
Claims9
A fuel injection control device applied to a fuel injection system which includes a pressure accumulator accumulating a high pressure fuel, a fuel pump supplying the high pressure fuel to the pressure accumulator, a fuel injector injecting the high pressure fuel, and a fuel pressure sensor detecting a fuel pressure in a fuel passage between the pressure accumulator and an injection port of the fuel injector, the fuel injection control device comprising:
- a fuel pressure obtaining portion which obtains the fuel pressure detected by the fuel pressure sensor;
- a differential value calculating portion which differentiates the fuel pressure obtained by the fuel pressure obtaining portion so as to calculate a fuel pressure differential value;
- and
- an end timing calculating portion which calculates an injection end timing at which the fuel injector terminates a fuel injection.
Dependencies are inferred from the claim text.