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:
Feb. 02, 2010
Filed:
Jul. 30, 2007
Markus Göhring, Nufringen, DE;
Marco Fleckner, Leonberg, DE;
Nils Sauvlet, Bad Essen, DE;
Dieter Kraxner, Wurmberg, DE;
Markus Göhring, Nufringen, DE;
Marco Fleckner, Leonberg, DE;
Nils Sauvlet, Bad Essen, DE;
Dieter Kraxner, Wurmberg, DE;
Dr. Ing. h.c. F. Porsche AG, Stuttgart, DE;
Abstract
A method operates a drive train the is formed of an internal combustion engine, an electric motor, a transmission and a first clutch that connects the internal combustion engine to the electric motor. During an operating state for applying a current requested torque to a transmission input with the electric motor switched on and the internal combustion engine switched off, the internal combustion engine is connected into the circuit by increasing the torque applied to the drive train by the electric motor before the internal combustion engine starts, in such a way that only the current requested torque is applied to the transmission input. Excess torque is extracted from the drive train by actuating the first clutch and applying the excess torque to the internal combustion engine in order to accelerate it. The internal combustion engine is started when its starting state is reached.