The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2008
Filed:
Oct. 23, 2002
Dieter Kraxner, Wurmberg, DE;
Thomas Busold, Fulda, DE;
Wolfgang Grosspietsch, Schweinfurt, DE;
Eduard Steiner, Wuerzburg, DE;
Dieter Kraxner, Wurmberg, DE;
Thomas Busold, Fulda, DE;
Wolfgang Grosspietsch, Schweinfurt, DE;
Eduard Steiner, Wuerzburg, DE;
Dr. Ing. h.c.F. Porsche Aktiengesellschaft, Stuttgart, DE;
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.