Alternator control systems and methods for vehicle deceleration

A system for a vehicle includes a fuel control module and a voltage setting module. The fuel control module cuts off fuel to an engine during a deceleration fuel cutoff (DFCO) event. During the DFCO event, the voltage setting module monitors a brake pedal position, sets a desired voltage to a first...

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Bibliographische Detailangaben
Hauptverfasser:	Whitney Christopher E, Correia Josef J
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGUE COMPUTERS BLASTING CALCULATING CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER COMBUSTION ENGINES COMPUTING CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES CONTROLLING COMBUSTION ENGINES CONVERSION OR DISTRIBUTION OF ELECTRIC POWER COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY GENERATION HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT SYSTEMS FOR STORING ELECTRIC ENERGY TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A system for a vehicle includes a fuel control module and a voltage setting module. The fuel control module cuts off fuel to an engine during a deceleration fuel cutoff (DFCO) event. During the DFCO event, the voltage setting module monitors a brake pedal position, sets a desired voltage to a first predetermined voltage when a brake pedal is not depressed, and sets the desired voltage to a second predetermined voltage when the brake pedal is depressed. The second predetermined voltage is greater than the first predetermined voltage. A regulator generates a pulse width modulation (PWM) signal based on the desired voltage and applies the PWM signal to an alternator.