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:
Sep. 04, 2001
Filed:
Mar. 22, 2000
Uwe Heitz, Friedrichshafen, DE;
Siegfried Dobler, Langenargen, DE;
Arun-Kuma Chatterjee, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A power train control (,) for a vehicle (,) or an automotive machine with a prime mover (,) with a governor (,) and a continuously variable transmission (,) with a ratio control (,). The power train control (,) coordinates the ratio control and the governor issuing a theoretical speed n_mot_nom to the governor (,) for the prime mover (,) and a nominal transmission ratio i_nom to the ratio control (,). The power train control (,) is designed as a combination of two governors, the transmission output speed governor (,) and the governor (,) for relief of the prime mover (,). The transmission output speed governor (,) receives the transmission output speed n_out as a control variable and generates the nominal speed n_mot_nom for the prime mover (,) as a manipulated value, and the governor (,) for relief of the prime mover (,) by the speed n_mot of the prime mover (,) as a control value and a transmission ratio correction value &Dgr;i as a manipulated value. The nominal transmission ratio i_nom is specified by addition of this correction value &Dgr;i to a coarse transmission nominal ratio i_0_nom, with the latter being specified as function of the nominal speed n_mot_nom of the prime mover (,) and the nominal transmission output speed n_out_nom set by the driver (,).