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1. (WO2017186710) HYDRAULIC CIRCUIT, TORQUE TRANSMISSION DEVICE HAVING A HYDRAULIC CIRCUIT, AND METHOD FOR OPERATING A HYDRAULIC CIRCUIT

Pub. No.:    WO/2017/186710    International Application No.:    PCT/EP2017/059778
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Wed Apr 26 01:59:59 CEST 2017
IPC: F16D 21/06
F16D 48/02
Applicants: AVL COMMERCIAL DRIVELINE & TRACTOR ENGINEERING GMBH
Inventors: KUNTNER, Stefan
Title: HYDRAULIC CIRCUIT, TORQUE TRANSMISSION DEVICE HAVING A HYDRAULIC CIRCUIT, AND METHOD FOR OPERATING A HYDRAULIC CIRCUIT
Abstract:
The invention relates to a hydraulic circuit (100, 200, 300) having a first, hydraulically actuable coupling (K1) which is closed in a rest state and a second, hydraulically actuable coupling (K2) which is closed in the rest state, wherein the hydraulic circuit (100, 200, 300) is configured in such a way that a hydraulic medium which is present in a main pressure line (HD) can be loaded with a working pressure by means of a pressure generating device (DE) and/or by means of a pressure accumulator (DS), and the hydraulic medium can be discharged for pressure dissipation via a main return line (HR) into the return reservoir (T), and wherein the hydraulic circuit (100, 200, 300) has a first distributor pressure line (VD1) and a separate, first collector return line (SR1) for the hydraulic supply of a first part circuit (TK1) and at least one separate, second distributor pressure line (VD2) and at least one separate, second collector return line (SR2) for the hydraulic supply of a second part circuit (TK2), wherein the first coupling (K1) is assigned to the first part circuit (TK1) and the second coupling (K2) is assigned to the second part circuit (TK2), and wherein, in an operating state of the hydraulic circuit (100, 200, 300), either the first collector return line (SR1) or the second collector return line (SR2) is connected hydraulically to the main pressure line (HD).