Drive train for a motor vehicle

US7351175B2 · kind B2 · utility

Assignee

• Dr. Ing. h.c. F. Porsche AG · DE

Inventors

• Dieter Kraxner · Wurmberg, DE
• Thomas Busold · Brauel, DE
• Wolfgang Grosspietsch · Schweinfurt, DE
• Eduard Steiner · Rottendorf, DE

Key dates

• Filing date: Oct 23, 2002
• Grant date: Apr 1, 2008
• Expiry date: Dec 31, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2061/0034
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A drive train for a motor vehicle includes a coupling device between a drive unit and a transmission for torque or moment transfer between the drive unit and the transmission. The coupling device has at least one coupling arrangement that can be activated by a pressure medium. The transmission can be activated through the use of a pressure medium by way of a dedicated actuator whereby, on the basis of a shared pump arrangement that is or can be driven by the drive unit, (i) the pressure medium can be provided for activation of the coupling arrangement, (ii) the operating medium can be conducted to the coupling device for the purpose of operating under the influence of the operating medium, and (iii) the pressure medium can be provided for activation of the transmission. The pump arrangement includes at least one pump, which can be controlled or adjusted with regard to output pressure and/or with regard to output flow rate.