Drive unit with engine and retarder

US5779008A · kind A · utility

Assignee

• Voith Turbo GmbH & Co. KG · DE

Inventors

• Klaus Vogelsang · Crailsheim, DE
• Jurgen Friedrich · Kupferberg, DE
• Hans Gebhardt
• Heribert Moller · Sachsen bei Ansbach, DE

Key dates

• Filing date: Oct 6, 1995
• Grant date: Jul 14, 1998
• Expiry date: Oct 6, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01P2060/06
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A drive unit comprising an engine, a transmission, a hydrodynamic retarder comprised of a rotor impeller wheel, a stator impeller wheel and a retarder housing enclosing both. A coolant circuit having coolant also serves as a working fluid of the retarder, and a pump impeller wheel is arranged coaxially with the rotor impeller wheel of the retarder which is used to circulate the coolant. Given this configuration, the space needed by the units which perform the pumping and braking functions of the drive unit are minimized while the efficiency of the pumping and braking functions are maximized.