Vehicle hydraulic system has an oil tank with a gas content in a pressure balance with the oil content, controlled according to temperature

The hydraulic oil tank (12), for a motor vehicle hydraulic system (10), contains gas (22) in pressure balance with the oil (24). The gas temperature is registered together with standing temperature values. A lower pressure threshold is established according to temperature so that, in a gas temperatu...

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Bibliographische Detailangaben
Hauptverfasser:	BUSOLD, THOMAS, REINBOLD, SVEN
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL BLASTING BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLE SUSPENSION ARRANGEMENTS VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The hydraulic oil tank (12), for a motor vehicle hydraulic system (10), contains gas (22) in pressure balance with the oil (24). The gas temperature is registered together with standing temperature values. A lower pressure threshold is established according to temperature so that, in a gas temperature zone, the lower threshold value continuously rises with an increasing gas temperature. A control (16) acts on a pump (14) to fill the tank so that the oil pressure remains between a lower and an upper threshold value. Ein Verfahren zum Betreiben eines Hydraulikspeichers (12), der ein Gasvolumen (22) und ein mit dem Gasvolumen (22) in Druckausgleichsverbindung stehendes Flüssigkeitsvolumen (24) umfasst, umfasst die Maßnahmen: - Erfassen einer mit einer Gastemperatur des Gasvolumens (22) im Zusammenhang stehenden Temperaturgröße; - Vorgeben eines unteren Schwellendrucks in Abhängigkeit von der Temperaturgröße, derart, dass in einem Gastemperaturbereich der untere Schwellendruck mit steigender Gastemperatur kontinuierlich ansteigt.