Fuel injection control apparatus

Details Fuel injection control apparatus Fuel injection control apparatus

1989-03-27

1990-04-03

Neill, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123 1A, 123494, F02D 4104

Patent

active

049130994

ABSTRACT:
An apparatus for controlling fuel delivery to an internal combustion engine having a plurality of cylinders each having an individual fuel injector. The apparatus comprises a sensor sensitive to an alcohol concentration of the fuel to be delivered to the engine for producing an alcohol concentration signal indicative of a sensed alcohol concentration. The apparatus also includes a control unit responsive to the alcohol concentration signal for controlling the duration of fuel injection from each of the fuel injectors to the corresponding cylinder. The control unit calculates a first time at which fuel injection to the corresponding cylinder is terminated and a second time at which fuel injection to the corresponding cylinder is initiated to ensure that the fuel injection will be terminated at the first time. The first time is varied according to the alcohol concentration.

REFERENCES:
patent: 4519341 (1985-05-01), McGarr
patent: 4635608 (1987-01-01), Carroll
patent: 4646691 (1987-03-01), Kiyota et al.
patent: 4706630 (1987-11-01), Wineland et al.
patent: 4770129 (1988-09-01), Miyata et al.
patent: 4841938 (1989-06-01), Weibler et al.

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