Schmierkreislauf mit Elektrischer Lagerkammerpumpe in einer Sammelleitung

Details

Veröffentlichungs-Nr.

EP4722501

Anmeldetag

26. September 2025

Veröffentlichung

8. April 2026

Rechtsraum

EP

IPC

F01D25/20, F02C7/06, F01D15/10

Abstract

An engine system comprises a gas turbine engine (20) that has a spool (30,32) that includes a compressor rotor and a turbine, and a combustor (56) connected to receive compressed air from the compressor rotor. There is an electric engine motor (64) electrically connected to a battery (60) and coupled to drive the spool (30,32). A lubrication circuit (66) includes a bearing compartment (68), a scavenger line (76a) connected with the bearing compartment (68), and a mechanically-driven scavenger pump (74) operable to suction the bearing compartment (68) via the scavenger line (76a). A bearing compartment pump (80) is located in the scavenger line (76a) between the bearing compartment (68) and the scavenger pump (74). The bearing compartment pump (80) is electrically connected to the battery (60) and is operable to reduce pressure in the bearing compartment (68) independently of operation of the mechanically-driven scavenger pump (74).

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA