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:
Nov. 01, 2011
Filed:
Jan. 08, 2008
Martin Fuechtner, Stuttgart, DE;
Dieter Kraxner, Wurmberg, DE;
Markus Goehring, Nufringen, DE;
Marco Fleckner, Leonberg, DE;
Nils Sauvlet, Gerlingen, DE;
Martin Fuechtner, Stuttgart, DE;
Dieter Kraxner, Wurmberg, DE;
Markus Goehring, Nufringen, DE;
Marco Fleckner, Leonberg, DE;
Nils Sauvlet, Gerlingen, DE;
Abstract
A method is provided for starting a piston engine of a hybrid drive in an electric travel state. The hybrid drive includes at least the piston engine, an electric motor, a transmission, and a clutch situated between the piston engine and the electric motor. A converter lockup clutch, which is switchable into a slip state, is also provided. A slip is set at the converter lockup clutch, and a speed of the electric motor is then increased. The speed and the torque either do not change or only change in a predefined range at the output side of the converter lockup clutch. The clutch is closed to transmit a torque pulse, so that a first top dead center of the piston of the piston engine may be overcome. A predefined slip is then set at the clutch.