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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 9745722 B1

PDFFull Text
Date of Patent:
Aug. 29, 2017

Filed:

Nov. 25, 2014

Work vehicle and method of controlling work vehicle

Applicant:

Komatsu Ltd., Tokyo, JP;

Inventors:

Hiroshi Monden, Hiratsuka, JP;

Tatsuro Nohara, Erie, PA (US);

Shogo Miyazaki, Hiratsuka, JP;

Assignee:

KOMATSU LTD., Tokyo, JP;

Attorney:

Global IP Counselors, LLP

Primary Examiner:

Courtney Heinle

Int. Cl.
CPC ...
E02F 9/20 (2006.01); B60K 6/445 (2007.10); B60L 11/14 (2006.01); F02D 29/04 (2006.01); B60L 7/14 (2006.01); F16H 61/10 (2006.01); F02D 41/02 (2006.01); B60L 7/26 (2006.01); B60L 11/00 (2006.01); B60L 11/12 (2006.01); B60L 15/20 (2006.01); B60K 6/365 (2007.10); B60K 6/387 (2007.10); B60K 6/547 (2007.10); B60K 6/38 (2007.10); B60K 17/08 (2006.01); E02F 3/28 (2006.01); F16H 61/26 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2079 (2013.01); B60K 6/365 (2013.01); B60K 6/387 (2013.01); B60K 6/445 (2013.01); B60K 6/547 (2013.01); B60K 17/08 (2013.01); B60L 7/14 (2013.01); B60L 7/26 (2013.01); B60L 11/005 (2013.01); B60L 11/123 (2013.01); B60L 11/14 (2013.01); B60L 15/2054 (2013.01); E02F 3/283 (2013.01); F02D 29/04 (2013.01); F16H 61/26 (2013.01); B60K 2006/381 (2013.01); B60L 2200/40 (2013.01); B60L 2240/12 (2013.01); B60L 2240/36 (2013.01); B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60L 2240/441 (2013.01); B60L 2240/443 (2013.01); B60L 2240/486 (2013.01); B60L 2240/507 (2013.01); B60L 2250/24 (2013.01); B60L 2250/26 (2013.01); E02F 9/2066 (2013.01); F02D 41/021 (2013.01); F02D 41/0215 (2013.01); F16H 61/10 (2013.01); F16H 2200/2035 (2013.01); Y02T 10/6217 (2013.01); Y02T 10/6239 (2013.01); Y02T 10/645 (2013.01); Y02T 10/7022 (2013.01); Y02T 10/7077 (2013.01); Y02T 10/72 (2013.01); Y02T 10/7275 (2013.01);
Abstract

A power transmission includes first and second clutches for switching a transmission path for a driving force. A work vehicle includes a clutch controlling unit and an engine controlling unit. The clutch controlling unit is configured to determine which of first and second modes the transmission path is switched into based on which of a range of greater than or equal to a mode switching threshold and a range of less than or equal to the mode switching threshold a speed ratio parameter falls into, and is configured to output a clutch command signal causing one of the first and second clutches to be engaged corresponding to the determined mode. The engine controlling unit is configured to apply an offset to a rotational speed of an input shaft such that after switching into the determined mode, the speed ratio parameter deviates from the mode switching threshold in the switched mode.

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