Hydraulisches Antriebssystem für den Reinigungslüfter eines Mähdreschers

Details

Veröffentlichungs-Nr.

EP4548747

Aktenzeichen

EP23207904

Anmeldetag

6. November 2023

Veröffentlichung

7. Mai 2025

Rechtsraum

EP

IPC

A01F12/44A01D69/03

Abstract

The drive system comprises a hydraulic pump and a hydraulic motor, both having an inlet port and an outlet port, the motor being a fixed displacement motor directly coupled to the cleaning fan for rotationally driving said fan, the pump being a variable displacement pump configured to produce a flow of hydraulic liquid to the motor. In a system according to the invention, the outlet port of the pump is coupled to the inlet port of the motor by a hydraulic line, wherein said line does not comprise a valve for regulating a flow of hydraulic liquid to the motor. In the system of the invention, the flow to the motor is not regulated through a flow regulating valve between pump and motor, but by changing the pump displacement electronically. To this aim, the pump includes an electronically actuated hydraulic control system for controlling the pump displacement regardless of the hydraulic pressure of the liquid in the hydraulic line between the pump and the motor. The pump and the motor are part of an open hydraulic circuit.

Anmelder

Firma

CNH Industrial Belgium N.V.

Land

🇧🇪 Belgien

Fachgebiete