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:
Jun. 10, 2003
Filed:
Jan. 02, 2001
Juergen Loeffler, Ludwigsburg, DE;
Martin-Peter Bolz, Buehl, DE;
Karl-Heinz Senger, Farmington Hills, MI (US);
Holger Huelser, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to an arrangement and a method for controlling an adjusting speed for a change of an actual transmission ratio into a steady-state desired transmission ratio (shifting operation) for a continuously variable transmission mounted in the drive train of a motor vehicle. In the arrangement of the invention, it is provided that the shifting operation is subdivided into individual periods (dT) of fixed duration. During each period (dT), a dynamic desired transmission ratio (u ) is determined by multiplying the steady-state desired transmission ratio (u ) by a gradient (u ). The change of the actual transmission ratio (u) into a dynamic desired transmission ratio (u ) of each period (dT) takes place with a constant adjusting speed (v ).