Hydraulic-electric control circuit for earth-moving machine main

Details Hydraulic-electric control circuit for earth-moving machine main Hydraulic-electric control circuit for earth-moving machine main

1987-02-20

1988-10-11

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60427, 60431, 123357, 13762568, 200 819R, F15B 1308, F02D 1106, H01H 3538, F04B 4902

Patent

active

047761644

ABSTRACT:
An earth-moving machine has an automatic device for minimizing the running speed of the main engine when no power is required by the hydraulic actuators. This device establishes a predetermined hydraulic fluid flow-rate in the servocontrol in the non-neutral position of the servocontrol itself. This flow-rate is indicated by an on-off flow-rate sensor inserted in the auxiliary hydraulic control circuit between the pump and the servocontrols, this sensor controlling the variation in the operating condition of the injection pump of the main engine by means of an electromagnet.

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