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:
Apr. 14, 2009
Filed:
Apr. 26, 2005
Michael D. Foster, Carmel, IN (US);
Charles F. Long, Pittsboro, IN (US);
Michael L. Duhaime, Northville, MI (US);
Michael D. Foster, Carmel, IN (US);
Charles F. Long, Pittsboro, IN (US);
Michael L. Duhaime, Northville, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
The present invention provides a control system employing a single solenoid valve operable to provide a variable fluid flow to effect cooling if the motor/generator assemblies contained within an electrically variable hybrid transmission. The control system of the present invention selectively controls the cooling of at least one motor/generator assembly of an electronically variable hybrid transmission by selectively controlling valves of various types and configurations.