Hydraulic arrangement
AssigneeDeere & Company
InventorsMario Seebode, Thilo Kazimiers
Life of this patent
Estimating the term…
Abstract
A hydraulic arrangement (10) to increase a motor load is described. The hydraulic arrangement comprises a hydraulic consumer (28), a load pressure-controlled hydraulic pump (24), a hydraulic tank (26), and a hydraulic control circuit (30), connected with the hydraulic consumer (28), with which a volume flow conveyed by the hydraulic pump (24) can be changed, wherein the hydraulic control circuit (30) comprises an excess pressure valve (42) and an electronically controllable control valve (36). In order to ensure a prioritization of the hydraulic consumer with a simultaneous increase of the motor bad, a proposal is made that the hydraulic control circuit (30) comprise a load pressure-controlled pressure compensator (38) between the excess pressure valve (42) and the control valve (36).
Claims8
A hydraulic arrangement comprising:
- a hydraulic consumer;
- a load pressure-controlled hydraulic pump driven by a vehicle combustion engine;
- a hydraulic tank;
- an electronic control unit;
- a hydraulic control circuit connected with the hydraulic consumer and controlling a volume flow conveyed by the hydraulic pump, the hydraulic control circuit including:
- an excess pressure valve connected to the hydraulic tank,
- an electronically controlled control valve connected to the electronic control unit, the control valve connected to a hydraulic supply line connected to the hydraulic pump,
- a load pressure-controlled pressure compensator connected between the excess pressure valve and control valve,
- a first control pressure line that branches off from a load pressure line to the pressure compensator, the load pressure line connected to the hydraulic pump and to the hydraulic consumer,
- a first hydraulic line that connects the control valve and the pressure compensator,
- a second control pressure line that branches off from the first hydraulic line to the pressure compensator,
- a second hydraulic line, connecting the pressure compensator and the excess pressure valve,
- a third control pressure line connecting the second hydraulic line with the load pressure line, and
- a nonreturn valve, which closes in the direction of the second hydraulic line, is located in the third control pressure line.
Dependencies are inferred from the claim text.