Fuel control apparatus for internal combustion engine

Details Fuel control apparatus for internal combustion engine Fuel control apparatus for internal combustion engine

1988-08-10

1990-03-27

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123478, F02B 3300

Patent

active

049111310

ABSTRACT:
An apparatus for use with a multi-cylinder internal combustion engine including a plurality of fuel injectors, each being operable in its open position for injecting fuel into an intake port with which an intake valve is in cooperation for regulating the entry of combustion ingredients into the corresponding cylinder. The apparatus includes a control circuit for operating the fuel injectors in a predetermined sequence. The control circuit determines a length of time one fuel injector to be operated is in its open position in response to selected engine operating conditions. The control circuit opens the one fuel injector at a time to terminate the determined time length substantially at the same time when the corresponding intake valve opens. In addition, the control circuit prolongs the determined time length in response to a demand for engine acceleration produced when the one fuel injector is in its open position.

REFERENCES:
patent: 4627404 (1986-12-01), Saito et al.
patent: 4640254 (1987-02-01), Ninomiya
patent: 4662340 (1987-05-01), Nagano
patent: 4781163 (1988-11-01), Jautelat et al.
patent: 4800860 (1989-01-01), Nanyoshi et al.

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