Gear oil chamber

US9551247B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Christian Michel · Ravensburg, DE
• Michael Ebenhoch · Friedrichshafen, DE

Key dates

• Filing date: Jul 16, 2009
• Grant date: Jan 24, 2017
• Expiry date: Dec 11, 2029

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2011/0041
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A transmission oil sump comprises a main oil compartment, in which a suction line of an oil pump is located, and a secondary oil compartment. The secondary oil compartment is in fluid communication with the main oil compartment via an opening. To prevent the introduction of air during rapid acceleration, cornering at high speeds and/or rapid deceleration of the vehicle, a barrier closes the opening to prevent the flow of oil out of the main oil compartment into the secondary oil compartment so that the oil level, required for the oil pump in the main compartment, remains adequately high. When not closed, the opening of the secondary oil compartment is open to ensure oil flow from the secondary oil compartment to the main oil compartment. The secondary oil compartments is arranged so as to collect oil that leaks from transmission components.