Engine unit with lubricant cooling

US4393922A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Friedrich Bahrle · Waiblingen, DE
• Helmut Wulf · Esslingen am Neckar, DE

Key dates

• Filing date: Jan 22, 1981
• Grant date: Jul 19, 1983
• Expiry date: Jan 22, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2189
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An engine unit adapted to be lubricated by a liquid lubricant with a lubricant reservoir as well as a lubricant cooling. The cooling takes place by way of at least one heat pipe, with the heat pipe having a heat absorbing portion adapted to be exposed to the lubricant and a heat transmitting portion adapted to be exposed to surrounding air. The engine unit may be an internal combustion engine, a gear system such as a change-speed transmission or differential transmission of a vehicle drive axle.