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;
Kai Bornträger, Langenargen, DE;
Stefan Wallner, Mattsee, AT;
Christian Mittelberger, Ravensburg, DE;
Johannes Kaltenbach, Friedrichshafen, DE;
Kai Bornträger, Langenargen, DE;
Stefan Wallner, Mattsee, AT;
Christian Mittelberger, Ravensburg, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
The invention relates to a method and a device for controlling a creep mode of a vehicle having a hybrid drive system ('), having a parallel hybrid drivetrain (′) comprising an internal combustion engine (), at least one electrical machine (), a first switching element () designed as a frictional element and disposed between the internal combustion engine () and the electrical machine (), by means of which the internal combustion engine () can be connected to the electrical machine (), a gearbox (), an output (), and at least one second switching element () designed as a frictional element and disposed between the electrical machine () and the output (), by means of which the electrical machine () can be operationally connected to the output (). In order to allow low-cost, effective long-term creeping that is gentle on the components, and thereby ensures reliable availability of electrical energy for electrical loads of the vehicle, the creep mode is alternately implemented by an internal combustion engine creep mode generated by means of operating at least one switching element () in slip, and an electrical motor creep mode at least supported by means of the electrical machine ().