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. 16, 2014
Filed:
Jul. 06, 2012
Jonathan M. Bolenbaugh, Hartland, MI (US);
Jonathan M. Bolenbaugh, Hartland, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A vehicle includes an engine, battery module, stationary member, first and second motor generator units (MGUs), three clutches, a planetary gear set, an output member, and a controller. The first MGU is in series with the engine. The three clutches include a brake, a rotating clutch, and a passive one-way clutch between the brake and the stationary member. The brake is between the one-way clutch and a first node of the gear set. The second MGU connects to a third node of the gear set. The second node is connected to the output member. The controller executes a method to select between powertrain modes, including first and second modes each with an electric vehicle (EV) and a series hybrid state, and a third mode that is a parallel hybrid mode. A method is also disclosed for selecting between the series and parallel powertrain modes using the clutch set.