Hydraulic system for a transmission of a motor vehicle

A hydraulic system for a transmission of a motor vehicle, the system having first and second pumps for conveying hydraulic fluid into primary and/or system-pressure circuits so that an intended pressure prevails in the circuits. The system further including liquid retention means preventing a flow o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Haberstock, Alexander, Haugg, Armin, Schmidt, Thilo, Popp, Christian, Herrmann, Markus
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CONTROLLING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR ENGINEERING ELEMENTS AND UNITS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING PHYSICS REGULATING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A hydraulic system for a transmission of a motor vehicle, the system having first and second pumps for conveying hydraulic fluid into primary and/or system-pressure circuits so that an intended pressure prevails in the circuits. The system further including liquid retention means preventing a flow of hydraulic fluid conveyed by the second pump from being conducted through the first pump when the first pump is not conveying and the second pump is conveying, and preventing a flow of hydraulic fluid conveyed by the first pump from being conducted through the second pump when the second pump is not conveying and the first pump is conveying. The system additionally including a sailing-mode lubricating valve for controlling, by an open-loop system, a flow rate of hydraulic fluid conveyed by the second pump into the primary and/or secondary system-pressure circuits such that the intended pressure is set in the system-pressure circuits.