Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2005-07-05
2005-07-05
Argenbright, Tony M. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S478000, C123S480000
Reexamination Certificate
active
06912999
ABSTRACT:
A method of controlling fuel injection is disclosed which enables highly accurate fuel injection and an enhanced durability of fuel injection valves in an internal combustion engine using an SPI system. The engine has a plurality of fuel injection valves disposed in an intake passage on an upstream side of a collector portion of an intake manifold of the internal combustion engine so that fuel is supplied to a plurality of cylinders of the engine by fuel injection from the fuel injection valves. The method includes alternately operating the plurality of fuel injection valves so as to supply the fuel when an intake airflow is a low flow rate equal to or less than a predetermined value, and simultaneously operating the plurality of fuel injection valves so as to supply the fuel when the intake airflow is a high flow rate more than the predetermined value.
REFERENCES:
patent: 4186708 (1980-02-01), Bowler
patent: 4235205 (1980-11-01), Fukui et al.
patent: 4256075 (1981-03-01), Fukui et al.
patent: 4319327 (1982-03-01), Higashiyama et al.
patent: 4727490 (1988-02-01), Narita et al.
Kobayashi Toshihiro
Miyamoto Yoshiji
Argenbright Tony M.
Nissan Kohki Co., Ltd.
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