Pumping device for a transmission and transmission comprising such a pumping device

US11486488B2 · kind B2 · utility

Assignee

• Joma-Polytec GmbH · DE

Inventors

• Torsten Helle · Bingen, DE
• Hans-Peter Ott · Hirrlingen, DE

Key dates

• Filing date: Feb 14, 2020
• Grant date: Nov 1, 2022
• Expiry date: May 8, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B43/04
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In order to enable efficient operation and reliable heat dissipation in a transmission, a pumping device (10) for lowering the internal pressure in a transmission (100) is equipped with a suction line (18), which leads from a suction point (20) on a connection side (14) to a discharge point (22) on a discharge side (16), a pump (24) for generating negative pressure at the suction point (20), a pump drive (26) for driving the pump (24), and an oil separator (28) connected upstream or downstream of the pump (24) in the suction line (18) that separates oil contained in the suction flow and returns it via a return line (30) to the connection side (14), and a check valve (34) connected downstream, preferably directly downstream, of the pump (24).A transmission (100) with such a pumping device (10), a use of a pumping device (10) and a method for reducing power losses in a transmission (100) are disclosed.