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. 24, 2007
Filed:
Feb. 17, 2005
Michael D. Foster, Carmel, IN (US);
James A. Raszkowski, Indianapolis, IN (US);
Gregory W. Kempf, Avon, IN (US);
Michael D. Foster, Carmel, IN (US);
James A. Raszkowski, Indianapolis, IN (US);
Gregory W. Kempf, Avon, IN (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
DaimlerChrysler AG, Stuttgart, DE;
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
A method and apparatus for efficiently cooling and lubricating rotating components in a hybrid transmission is provided. By efficiently managing cooling flow to and between the rotating elements, flow requirements and associated pumping requirements within the drive unit are minimized. In addition, by providing a method for placing the fluid directly on the required components, spin losses associated with component contact with stray oil are reduced. Combined, the reduction in pumping and spin losses create a more efficient drive unit and an overall more efficient hybrid drive system which directly leads to higher fuel economy.