Method for controlling fuel injection in an...

Details Method for controlling fuel injection in an... Method for controlling fuel injection in an...

2006-11-07

2006-11-07

Kwon, John T. (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S480000, C361S152000

Reexamination Certificate

active

07131428

ABSTRACT:
A method is provided for controlling fuel injection in an internal-combustion engine provided with an electroinjector, including an electroactuator, an injection nozzle, and a pin, which is movable along an opening stroke and a closing stroke for opening/closing the nozzle under the control of the electroactuator and according to the supply pressure of the fuel into the electroinjector. The method supplies to the electroactuator a first electrical command and at least a second electrical command, which are sufficiently close to one another as to displace the pin with a profile of motion without any discontinuity in time, and such as to cause the pin to perform a first opening displacement and, respectively, a second opening displacement. Between one injection and the next, at least one among the following quantities is varied as a function of operating parameters of the engine: duration of at least one among the electrical commands; number of the electrical commands; and distance in time between the electrical commands.

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patent: 0 570 986 (1993-11-01), None
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patent: 11 200932 (1999-07-01), None

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