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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 9776621 B1

PDFFull Text
Date of Patent:
Oct. 03, 2017

Filed:

Jul. 01, 2016

Engine start suppression for a hybrid car

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Inventor:

Keita Sato, Toyota, JP;

Assignee:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Primary Examiner:

Nicholas Kiswanto

Assistant Examiner:

Kenny A Taveras

Int. Cl.
CPC ...
B60L 9/00 (2006.01); B60L 11/00 (2006.01); G05D 1/00 (2006.01); B60W 20/13 (2016.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60K 6/48 (2007.10); B60K 6/445 (2007.10); B60K 6/52 (2007.10); B60W 10/26 (2006.01); B60W 30/182 (2012.01); B60W 20/11 (2016.01);
U.S. Cl.
CPC ...
B60W 20/13 (2016.01); B60K 6/445 (2013.01); B60K 6/48 (2013.01); B60K 6/52 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/26 (2013.01); B60W 20/11 (2016.01); B60W 30/182 (2013.01); B60K 2006/4825 (2013.01); B60W 2510/087 (2013.01); B60W 2510/244 (2013.01); B60W 2510/246 (2013.01); B60W 2520/10 (2013.01); B60W 2540/10 (2013.01); B60W 2710/244 (2013.01); Y10S 903/916 (2013.01); Y10S 903/93 (2013.01);
Abstract

During EV traveling in a CD mode, an electronic control unit determine that an engine is in a state where the engine is likely to be started when an electric power storage ratio SOC of a battery falls short of a threshold Sref, when a battery temperature Tb of the battery falls short of a threshold Tbref, when an output limit Wout of the battery falls short of a threshold Wref, when a temperature Tmg2 of a motor is higher than a threshold Tmg2ref, and when a torque limit Tm2lim of the motor falls short of a threshold Tm2limref. Then, the electronic control unit set a required torque Tr* by using a map for a CS mode in which the required torque Tr* is set to be lower than in a map for the CD mode.

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