BEST DRIVING CONTROL METHOD OF EXCAVATOR

The method enables the vehicle to preheat the working hydraulic oil of the hydraulic pump for preparing normal operation. The system comprises a temperature detecting sensor (12) for receiving the current signal according to the oil temperature (Q) of primary / secondary / tertiary hydraulic pumps (...

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Bibliographic Details
Main Authors SONG, MYONG - HUN, HWANG, BONG - DONG, LEE, CHAN - HUI
Format Patent
LanguageEnglish
Published 13.03.1995
Edition6
Subjects
DREDGING
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
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Summary:The method enables the vehicle to preheat the working hydraulic oil of the hydraulic pump for preparing normal operation. The system comprises a temperature detecting sensor (12) for receiving the current signal according to the oil temperature (Q) of primary / secondary / tertiary hydraulic pumps (2,3,4) and manipulating degree ( 1) of acutator lever / pedal (10); swash-plate angle adjusting valves (2b,3b) for outputting controlling current (Imax); solenoid valves (7,14) for outputting controlling currents (Ia,Ib); a logic valve (6) for passing the hydraulic oil discharged from the primary / secondary pumps (2,4). When the manipulating degree is zero and the oil temp. ( 1) is below minimum temp. (50 C), the temp. is increased to the proper temp. (55 C).
Bibliography:Application Number: KR19900019522