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:
Jul. 02, 2013
Filed:
Dec. 02, 2008
Johannes Kaltenbach, Friedrichshafen, DE;
Stefan Wallner, Mattsee, AT;
Johannes Kaltenbach, Friedrichshafen, DE;
Stefan Wallner, Mattsee, AT;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
The invention relates to a method and device for controlling a creep operation of a vehicle with a hybrid drive (), comprising a parallel hybrid drivetrain (), with an internal combustion engine (), at least one electric motor (), a first switching element () in the form of a friction element between the internal combustion engine () and the electric motor (), a gearbox (), an output () and a second switching element () arranged between the electric motor () and the output (). According to the invention, a simple, effective and component-friendly continuous creeping can be achieved without additional constructional or economic costs can be achieved, wherein the creeping operation is carried out with the internal combustion engine () running and both switching elements () simultaneously operating with slip, wherein the total operating power required to generate a required creeping torque is variably distributed over both switching elements ().