Internal combustion engine controller

Details Internal combustion engine controller Internal combustion engine controller

2007-12-17

2009-08-25

Vo, Hieu T (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

Reexamination Certificate

active

07578284

ABSTRACT:
An internal combustion engine controller has: a voltage booster circuit for boosting a battery power source; a booster side driver element for flowing a current through the injectors by using the boosted voltage; a battery side driver element disposed in parallel with the booster side driver element to flow a current through the injectors by using the battery power source; a first downstream side driver element provided by controlling currents flowing through the injectors; current regeneration diodes for flowing currents from the downstream side to the upstream side of the injectors; a booster side current detector resistor for detecting currents flowing via the current regeneration diodes; and an injector control circuit for controlling and driving the booster side driver element, battery side driver element and first downstream side driver element.

REFERENCES:
patent: 5752482 (1998-05-01), Roettgen et al.
patent: 6308688 (2001-10-01), French et al.
patent: 7377265 (2008-05-01), Kojima
patent: 2003/0062029 (2003-04-01), Oyama et al.
patent: 2001-14045 (2001-01-01), None
patent: 2002-61534 (2002-02-01), None
patent: 2003-106200 (2003-04-01), None
Japanese Office Action dated May 12, 2009 (Three (3) pages).

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