A work vehicle according is provided with an engine, a variable displacement hydraulic pump, a hydraulic motor, a traveling apparatus, an exhaust treatment device, a reductant supply route, a controller, and an operation member. The variable displacement hydraulic pump is configured to discharge hydraulic oil when driven by the engine. The hydraulic oil discharged from the variable displacement hydraulic pump drives hydraulic motor. The hydraulic motor drives the traveling apparatus. The exhaust treatment device is configured to treat the exhaust from the engine. The reductant supply route supplies a reductant to the exhaust treatment device. The controller is configured to set an engine speed to a low idle when the reductant supply route gets into an abnormal state. The operation member is configured to indicate a change of a discharge capacity of the variable displacement hydraulic pump so that the travel speed of the traveling apparatus becomes a predetermined speed or greater when the reductant supply route gets into an abnormal state.
WORK VEHICLE AND WORK VEHICLE CONTROL METHOD
NUTZFAHRZEUG UND VERFAHREN ZUR STEUERUNG DES NUTZFAHRZEUGS
ENGIN DE CHANTIER ET PROCÉDÉ DE COMMANDE D'ENGIN DE CHANTIER
2020-12-02
Patent
Electronic Resource
English
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / E02F Baggern , DREDGING / F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein |
European Patent Office | 2024
|