公开(公告)号：US20210025331A1

公开(公告)日：2021-01-28

申请号：US16932940

申请日：2020-07-20

Applicant: ROLLS-ROYCE plc

Inventor： Martin K. YATES ,  Stephanie E. WATKINS ,  Geir LEIVSETH

IPC: F02C7/228 ,  F23R3/34 ,  F15B13/02

Abstract: An assembly of a servo pump and a hydraulic motor. The assembly has a housing which contains the pump and the motor. The motor has a rotating body which rotates under the motive power of a pressurised motor liquid flow. The motor has a high pressure region which receives the pressurised motor liquid flow, and a low pressure region through which the motor liquid flow leaves the motor. The pump also has a rotating body. The pump has a low pressure region which receives servo liquid flow to be pumped by its rotating body, and a high pressure region through which pressurised servo liquid flow leaves the pump. Each rotating body is mounted on a respective journal.