Fuel injector control systems and methods

An injector driver module includes: a first node that is connected to a first terminal of a fuel injector; a first switch configured to, when closed, connect a first potential of a battery to the first node; a second switch configured to, when closed, connect a second potential that is greater than...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Ferrara, Umberto, Chiapusso, Luca, Belvedere, Tiziana, Casasso, Paolo
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	An injector driver module includes: a first node that is connected to a first terminal of a fuel injector; a first switch configured to, when closed, connect a first potential of a battery to the first node; a second switch configured to, when closed, connect a second potential that is greater than the first potential to the first node; a second node that is connected to a second terminal of the fuel injector; and a third switch configured to, when closed, connect a ground potential to the second node. A switch control module is configured to, starting at a target injecting timing for a fuel injection event of the fuel injector: maintain the third switch closed; and switch the second switch using a pulse width modulated (PWM) signal having (i) a duty cycle that is less than 100 percent and (ii) a predetermined frequency.