Stable Speed Control for a vehicle

The invention provides a method of operating a motor vehicle equipped with a powertrain, comprising the steps of: detecting if the motor vehicle is requested to move under a stable speed condition 600, and performing an operating strategy, if the request is detected. This operating strategy 625 comp...

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Bibliographische Detailangaben
1. Verfasser:	GIANMARCO BRUNETTI
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES CONTROLLING COMBUSTION ENGINES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides a method of operating a motor vehicle equipped with a powertrain, comprising the steps of: detecting if the motor vehicle is requested to move under a stable speed condition 600, and performing an operating strategy, if the request is detected. This operating strategy 625 comprising the steps of deÂtermining a mean value of the motor vehicle speed to be obtained during the stable speed condition, setting an allowable range of speed values around the determined mean value, and repeatedly performing a control cycle that operates the powertrain to accelerate the motor vehicle, until the motor vehicle speed increases to an upper limit of the allowable range of speed values. Then preventing the power-train from providing traction to the motor vehicle by operating a clutch to disengage the engine and allowing the vehicle to freewheel until the speed of the motor vehicle decreases from the upper limit to a lower limit of the alÂlowable range of speed values.