Control method and system for construction machine

Details Control method and system for construction machine Control method and system for construction machine

1998-11-20

1999-12-07

Novosad, Christopher J.

Earth working

Automatic power control

172812, 701 50, E02F 384

Patent

active

059967013

ABSTRACT:
An independent two pump system comprising an implement hydraulic pump and a steering hydraulic pump is described. The system has an inexpensive structure and the capability of preventing a construction machine from engine stalling without impairing fuel economy. When the implement hydraulic pump is actuated with the output of an engine to operate an implement attached to the construction machine, while actuating the steering hydraulic pump with the output of the engine to turn a vehicle body of the machine, the load exerted on the implement is detected and if the detected load is determined to exceed a preset value, the displacement of the steering hydraulic pump is reduced to thereby reduce the load associated with turning of the vehicle body.

REFERENCES:
patent: 3583243 (1971-06-01), Wilson
patent: 4529039 (1985-07-01), Sakundiak

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