Fuel injection control device and fuel injection control system

Details Fuel injection control device and fuel injection control system Fuel injection control device and fuel injection control system

2011-01-18

2011-01-18

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

C123S299000

Reexamination Certificate

active

07870845

ABSTRACT:
A fuel injection control device controls an operation of an injector such that fuel to be injected into a combustion chamber per combustion cycle is divided and injected at least through a first injection and a second injection, which is performed with a larger fuel quantity than the first injection after the first injection. The fuel injection control device includes an acquiring section and a first combustion state estimating section. The acquiring section acquires a sensing value of cylinder pressure in the combustion chamber sensed with a cylinder pressure sensor. The first combustion state estimating section estimates an actual combustion state of the fuel injected by the first injection based upon a second combustion timing cylinder pressure sensing value attributable to combustion of the fuel injected by the second injection out of the cylinder pressure sensing values.

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Japanese Office Action dated Jan. 6, 2010, issued in corresponding Japanese Application No. 2007-213334, with English translation.

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