Working machine

A work machine has a work device mounted on a machine body including a fluid pressure motor for travelling. A controller reduces engine speed to be lower than rated engine speed during normal working mode. The controller controls engine speed so as to obtain a pump flow rate in accordance with a tar...

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Bibliographic Details
Main Authors Ohkubo, Masafumi, Nakamoto, Yozo, Tada, Shogo
Format Patent
LanguageEnglish
Published 11.06.2019
Subjects
BLASTING
CALCULATING
COMBUSTION ENGINES
COMPUTING
CONTROLLING COMBUSTION ENGINES
COUNTING
DREDGING
ELECTRIC DIGITAL DATA PROCESSING
FIXED CONSTRUCTIONS
FOUNDATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
HYDRAULIC ENGINEERING
LIGHTING
MECHANICAL ENGINEERING
PHYSICS
SOIL SHIFTING
WEAPONS
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Summary:A work machine has a work device mounted on a machine body including a fluid pressure motor for travelling. A controller reduces engine speed to be lower than rated engine speed during normal working mode. The controller controls engine speed so as to obtain a pump flow rate in accordance with a target travelling speed during travelling low-load mode when engine load is lower than a threshold. The controller controls both the engine speed and output torque for pump control so that the engine output becomes maximum in travelling high-load mode when the engine load is higher than the threshold.
Bibliography:Application Number: US201415031078