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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 12071138 B1

PDFFull Text
Date of Patent:
Aug. 27, 2024

Filed:

Mar. 06, 2020

Work machine and method for controlling work machine

Applicant:

Komatsu Ltd., Tokyo, JP;

Inventor:

Yuita Takenaka, Tokyo, JP;

Assignee:

KOMATSU LTD., Tokyo, JP;

Attorney:

Global IP Counselors, LLP

Primary Examiner:

Tinh Dang

Int. Cl.
CPC ...
B60W 30/188 (2012.01); B60W 10/04 (2006.01); B60W 10/06 (2006.01); B60W 10/101 (2012.01); E02F 9/20 (2006.01); E02F 9/22 (2006.01); F02D 41/02 (2006.01); F16H 59/04 (2006.01); F16H 59/18 (2006.01); F16H 59/44 (2006.01); F16H 59/48 (2006.01); F16H 59/70 (2006.01); F16H 61/66 (2006.01); E02F 9/08 (2006.01);
U.S. Cl.
CPC ...
B60W 30/188 (2013.01); B60W 10/06 (2013.01); B60W 10/101 (2013.01); E02F 9/202 (2013.01); E02F 9/2253 (2013.01); F02D 41/0215 (2013.01); F16H 59/18 (2013.01); F16H 59/44 (2013.01); F16H 59/48 (2013.01); F16H 59/70 (2013.01); F16H 61/66 (2013.01); B60W 2520/105 (2013.01); B60W 2540/10 (2013.01); B60W 2710/06 (2013.01); B60W 2710/1005 (2013.01); E02F 9/0841 (2013.01);
Abstract

A work machine includes an engine, a transmission connected to the engine to change a transmission gear ratio continuously, a travel device connected to the transmission to cause the work machine to travel, a sensor arranged and configured to detect an acceleration of the work machine, and a controller. The controller selectively execute a first mode and a second mode that limits a target tractive force of the machine in comparison to the first mode. The controller weakens limitation of the target tractive force and determines the target tractive force when the acceleration of the machine in the second mode is less than a predetermined acceleration threshold. The controller determines a target transmission gear ratio in accordance with the target tractive force. The controller controls the transmission based on the target transmission gear ratio.

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