logo

For the Inventor, By the Inventor

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 11958471 B1

PDFFull Text
Date of Patent:
Apr. 16, 2024

Filed:

Jun. 22, 2021

Four-wheel drive vehicle

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Inventors:

Atsushi Tabata, Okazaki, JP;

Koichi Okuda, Toyota, JP;

Koji Takaira, Okazaki, JP;

Akinori Takahashi, Toyota, JP;

Yuuki Makino, Aichi-gun, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Gonzalo Laguarda

Int. Cl.
CPC ...
B60K 23/08 (2006.01); B60K 6/24 (2007.10); B60K 6/26 (2007.10); B60K 17/02 (2006.01); B60K 17/12 (2006.01); B60K 17/35 (2006.01); B60K 23/00 (2006.01); B60K 25/08 (2006.01); B60W 20/15 (2016.01); B60K 6/543 (2007.10); B60K 6/547 (2007.10); F16D 28/00 (2006.01);
U.S. Cl.
CPC ...
B60W 20/15 (2016.01); B60K 6/24 (2013.01); B60K 6/26 (2013.01); B60K 17/02 (2013.01); B60K 17/12 (2013.01); B60K 17/35 (2013.01); B60K 23/00 (2013.01); B60K 25/08 (2013.01); B60K 6/543 (2013.01); B60K 6/547 (2013.01); B60K 23/0808 (2013.01); F16D 28/00 (2013.01);
Abstract

A four-wheel drive vehicle includes: a drive-power distribution device for distributing a drive power from an engine to main and auxiliary drive wheels with a drive-power distribution ratio between the main drive wheels and auxiliary drive wheels; and a control apparatus for controlling an electric motor such that the drive-power distribution ratio becomes a target distribution ratio value, by setting an electric-current command value for driving an electric motor. The control apparatus is configured, in a drive-power transmitted state in which the drive power is transmitted to the drive-power distribution device, to execute a command-value reduction control operation for causing the electric motor to be driven with the electric-current command value being set to a value smaller than in a drive-power non-transmitted state in which the drive power is not being transmitted to the drive-power distribution device.

Find Patent Forward Citations

Loading…