CONTROL APPARATUS FOR WORKING VEHICLE

There are provided: a travel circuit HC1 that is formed through a closed circuit connection of a variable displacement hydraulic pump 2 driven by an engine 1 and a variable displacement hydraulic motor 3; a work circuit HC2 that includes a work hydraulic pump 4 that is driven by the engine 1 and a w...

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Bibliographische Detailangaben
Hauptverfasser:	HYODO, KOJI, YAMAZAKI, YASUO, YOSHIKAWA, MASAKI, CHONAN, KAZUO, TAKEYAMA, TSUYOSHI, HIDAKA, NOBUYUKI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES CONTROLLING COMBUSTION ENGINES DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	There are provided: a travel circuit HC1 that is formed through a closed circuit connection of a variable displacement hydraulic pump 2 driven by an engine 1 and a variable displacement hydraulic motor 3; a work circuit HC2 that includes a work hydraulic pump 4 that is driven by the engine 1 and a work hydraulic actuator 114, 115 that operates by pressure oil from the work hydraulic pump 4; a relief valve 14 that relieves high pressure oil of the travel circuit HC1; a rotation speed control unit 10, 18 that controls the engine rotation speed in correspondence to an operation amount of an accelerator pedal 9; a state detection unit 21, 22 that detects a vehicle state of high load travel and high load work; and a speed limitation unit 10 that reduces an upper limit of engine rotation speed when the vehicle state of high load travel and high load work is detected by the state detection unit 21, 22.