LUBRICATION OF JOURNAL BEARING DURING CLOCKWISE AND COUNTER-CLOCKWISE ROTATION

There is provided a lubrication system for a gear-turbofan engine, the lubrication system comprising: an epicyclic gear-train including a journal bearing; and a bi-directional auxiliary pump operatively coupled to a fan of the gear-turbofan engine, the bi-directional auxiliary pump including a first...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	VALVA, Christopher M, CIGAL, Brian P
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS CRANKCASE VENTILATING ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GAS-TURBINE PLANTS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING LUBRICATING LUBRICATING INTERNAL COMBUSTION ENGINES LUBRICATING OF MACHINES OR ENGINES IN GENERAL MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES THERMAL INSULATION IN GENERAL WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	There is provided a lubrication system for a gear-turbofan engine, the lubrication system comprising: an epicyclic gear-train including a journal bearing; and a bi-directional auxiliary pump operatively coupled to a fan of the gear-turbofan engine, the bi-directional auxiliary pump including a first pump port and a second pump port; wherein rotation of the fan below a predetermined operational speed range of the gear-turbofan engine in a first direction causes the bi-directional auxiliary pump to transfer lubricant outwardly from the first pump port to the journal bearing and wherein rotation of the fan below the predetermined operational speed range of the gear-turbofan engine in a second direction, which is opposite to the first direction, causes the bi-directional auxiliary pump to transfer lubricant outwardly from the second pump port to the journal bearing.