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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.:

US 8914180 B1

PDFFull Text
Date of Patent:
Dec. 16, 2014

Filed:

Oct. 23, 2013

Hybrid powertrain with geared starter motor and belt alternator starter and method of restarting an engine

Applicant:

GM Global Technology Operations Llc, Detroit, MI (US);

Inventors:

Alan G. Holmes, Clarkston, MI (US);

Shawn Scott Hawkins, Shelby Township, MI (US);

Assignee:

GM Global Technology Operations LLC, Detroit, MI (US);

Attorney:

Quinn Law Group, PLLC

Primary Examiner:

Mary Cheung

Assistant Examiner:

Frederick Brushaber

Int. Cl.
CPC ...
B60L 9/00 (2006.01); B60L 11/00 (2006.01); G05D 1/00 (2006.01); G05D 3/00 (2006.01); B60K 6/485 (2007.10); B60W 20/00 (2006.01); B60W 10/26 (2006.01); B60K 6/28 (2007.10); F02N 11/00 (2006.01); B60L 11/18 (2006.01); B60W 10/08 (2006.01);
U.S. Cl.
CPC ...
F02N 11/00 (2013.01); B60K 6/485 (2013.01); Y02T 10/7066 (2013.01); B60W 20/10 (2013.01); B60W 20/1062 (2013.01); Y10S 903/902 (2013.01); B60W 10/26 (2013.01); Y02T 10/6226 (2013.01); B60Y 2400/47 (2013.01); B60W 2540/06 (2013.01); Y02T 10/7016 (2013.01); Y02T 10/7005 (2013.01); B60W 2510/246 (2013.01); B60W 20/00 (2013.01); B60W 20/40 (2013.01); B60K 6/28 (2013.01); Y02T 10/7011 (2013.01); B60L 11/1868 (2013.01); B60W 10/08 (2013.01); Y10S 903/93 (2013.01);
Abstract

A hybrid powertrain has an engine, a starter motor, and a gear train that connects the starter motor with the engine, and a motor/generator. A belt drive train connects the motor/generator with the engine. The powertrain has a first energy storage device with a first operating range of voltage and a second energy storage device with a second operating range of voltage at least partially in common with the first operating range of voltage. A controller places a switching device in an on-state so that the first energy storage device is connected with the second energy storage device or in an off-state in which the first energy storage device is disconnected from the second energy storage device. The controller causes the switching device to be in the off-state and the starter motor and the motor/generator to be powered with energy from the first energy storage device to restart the engine.

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