Fuel injection control device

Details Fuel injection control device Fuel injection control device

2007-01-02

2007-01-02

Kwon, John T. (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S445000

Reexamination Certificate

active

11374159

ABSTRACT:
Provided is a fuel injection control device for an internal combustion engine capable of setting an overexcitation current time period which allows injectors to be reliably driven even when a fuel pressure sensor is in an abnormal state. A fuel supply control portion is equipped with an injector-valve opening signal generating unit, a first driving current supply signal generating unit, a first driving current supplying unit, a second driving current supplying unit, and a fuel pressure sensor malfunction detecting unit. When a malfunction in the fuel pressure sensor is detected, the first driving current supply signal generating unit sets a first driving current supply time period to a fixed time period which allows injectors to be opened even when a fuel pressure in the internal combustion engine is at its maximum.

REFERENCES:
patent: 4255789 (1981-03-01), Hartford et al.
patent: 4416239 (1983-11-01), Takase et al.
patent: 4996954 (1991-03-01), Seki et al.
patent: 2006/0005812 (2006-01-01), Mashiki
patent: 2000-303882 (2000-10-01), None

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