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1. EP2949822 - UTILITY VEHICLE

Office
European Patent Office
Application Number 14868160
Application Date 03.12.2014
Publication Number 2949822
Publication Date 02.12.2015
Publication Kind B1
IPC
E02F 9/22
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
FDREDGING; SOIL-SHIFTING
9Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
20Drives; Control devices
22Hydraulic or pneumatic drives
F16D 48/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
48External control of clutches
02Control by fluid pressure
CPC
E02F 9/2079
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
FDREDGING; SOIL-SHIFTING
9Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
20Drives; Control devices
2058Electric or electro-mechanical or mechanical control devices of vehicle sub-units
2079Control of mechanical transmission
B60W 10/02
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
10Conjoint control of vehicle sub-units of different type or different function
02including control of driveline clutches
B60W 10/06
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
10Conjoint control of vehicle sub-units of different type or different function
04including control of propulsion units
06including control of combustion engines
B60W 2050/0008
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
50Details of control systems for road vehicle drive control not related to the control of a particular sub-unit ; , e.g. process diagnostic or vehicle driver interfaces
0001Details of the control system
0002Automatic control, details of type of controller or control system architecture
0008Feedback, closed loop systems or details of feedback error signal
B60W 2050/0011
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
50Details of control systems for road vehicle drive control not related to the control of a particular sub-unit ; , e.g. process diagnostic or vehicle driver interfaces
0001Details of the control system
0002Automatic control, details of type of controller or control system architecture
0008Feedback, closed loop systems or details of feedback error signal
0011Proportional Integral Differential [PID] controller
B60W 2050/0012
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
50Details of control systems for road vehicle drive control not related to the control of a particular sub-unit ; , e.g. process diagnostic or vehicle driver interfaces
0001Details of the control system
0002Automatic control, details of type of controller or control system architecture
0012Feedforward or open loop systems
Applicants KOMATSU MFG CO LTD
Inventors SAKON YUU
Designated States
Priority Data 2013250164 03.12.2013 JP
Title
(DE) NUTZFAHRZEUG
(EN) UTILITY VEHICLE
(FR) VÉHICULE UTILITAIRE
Abstract
(EN)
A control device 40 of a wheel loader obtains a first ratio that is a ratio between a value corresponding to a target traveling distance that is a target for the wheel loader, when it travels to a discharge position where an excavated substance is discharged after an excavation with a bucket, and a value corresponding to a target elevation amount that is a target for an elevation of a boom after a motion is started. The control device 40 also obtains a second ratio that is a ratio between a value corresponding to an actual traveling distance after the wheel loader starts its motion to the position where the excavated substance is discharged after the excavation with the bucket, and a value corresponding to an actual elevation amount of the boom after the motion is started. The control device 40 then controls a transmission toque transmitted to a drive wheel from an engine in order that a difference between the first ratio and the second ratio becomes zero.

(FR)
L'invention concerne un dispositif de commande (40) de chargeuse montée sur roues, qui calcule un premier rapport qui est le rapport entre une valeur correspondant à la distance de déplacement cible servant de distance cible lorsque la chargeuse montée sur roues se déplace vers une position où les objets excavés sont déchargés après excavation par un godet, et une valeur correspondant à la quantité d'élévation de cible qui sert de cible lorsque la flèche est levée après le début du déplacement. Le dispositif de commande (40) calcule également la différence entre le premier et un second rapport, qui est le rapport entre une valeur correspondant à la distance réelle que la chargeuse montée sur roues parcourt après le début du déplacement vers la position où les objets excavés sont déchargés après excavation par le godet, et une valeur correspondant à la quantité réelle de levage de la flèche après le début du déplacement. Le dispositif de commande (40) commande ensuite le couple de transmission qui est transmis du moteur aux roues d'entraînement, de telle sorte que la différence entre le premier rapport et le second rapport est nulle.