SYSTEM AND METHOD FOR CONTROLLING THE SPEED OF A WORK VEHICLE DURING DOWNHILL OPERATION

A method for controlling the speed of a work vehicle (10) during downhill operation may include controlling (302) an operation of at least one of an engine (104) or a transmission (106) of a work vehicle (10) so as to maintain the work vehicle operating at a requested speed and identifying (204, 304...

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Bibliographische Detailangaben
Hauptverfasser:	OMRAN, Ashraf, HARTMAN, Brian A, BULGRIEN, Garth H
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A method for controlling the speed of a work vehicle (10) during downhill operation may include controlling (302) an operation of at least one of an engine (104) or a transmission (106) of a work vehicle (10) so as to maintain the work vehicle operating at a requested speed and identifying (204, 304) an operating condition of the work vehicle that provides an indication that the work vehicle is traveling downhill. In addition, the method includes determining (214, 314) whether at least one pre-condition (216, 218) for downshifting the transmission from a current gear ratio to a downshift gear ratio is satisfied when the operating condition indicates that the work vehicle is currently traveling downhill. Moreover, when it is determined that the pre-condition(s) is/are satisfied, the method may include controlling (220, 308) the operation of the transmission such that the transmission is downshifted from the current gear ratio to the downshift gear ratio.