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:
May. 06, 2003
Filed:
May. 02, 2001
Klaus-Peter Schnelle, Ditzingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A transmission ( ), in particular for motor vehicles, has two planetary gears ( ), whose ring gears ( ) are connected by a crown gear ( ) to the crankshaft ( ) of an internal combustion engine. Each planetary gear ( ) is coupled to a respective gear shaft ( ), on which input gear wheels ( E- E, RE) for various gear ratios are disposed. The input gear wheels ( E- E, RE) mesh with output gear wheels ( A- A, RA) disposed on an output shaft ( ). It is provided that each planetary gear ( ) be coupled with an electric machine ( ), and the electric machines are for instance connected to the sun wheels ( ) of the planetary gear ( ). With the arrangement described, especially for use in hybrid vehicles, relatively high total efficiency and infinitely variable gear ratios can be achieved.