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.:
Date of Patent:
Jul. 29, 2014
Filed:
Feb. 12, 2010
Applicants:
Atsushi Shirao, Komatsu, JP;
Masanori Ikari, Komatsu, JP;
Inventors:
Atsushi Shirao, Komatsu, JP;
Masanori Ikari, Komatsu, JP;
Assignee:
Komatsu Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K 17/10 (2006.01); E02F 9/22 (2006.01); F16H 61/468 (2010.01); F16H 61/421 (2010.01); B60W 10/06 (2006.01); F16H 61/431 (2010.01); B60W 30/188 (2012.01); B60W 10/103 (2012.01); F16H 59/68 (2006.01);
U.S. Cl.
CPC ...
F16H 61/468 (2013.01); Y02T 10/76 (2013.01); E02F 9/2296 (2013.01); E02F 9/2253 (2013.01); F16H 2059/6861 (2013.01); E02F 9/2289 (2013.01); F16H 61/421 (2013.01); E02F 9/2292 (2013.01); E02F 9/2246 (2013.01); B60W 10/06 (2013.01); F16H 61/431 (2013.01); B60W 2710/0666 (2013.01); E02F 9/2235 (2013.01); B60W 30/1882 (2013.01); B60W 10/103 (2013.01);
Abstract
A wheel loader () is designed so that when a specific first condition is met for vehicle speed, accelerator opening, engine speed, and HST pressure, the engine absorption torque curve of an HST pump () is switched to shift the matching point from the low-engine speed side to the high-engine speed side. On the other hand, if a second condition is met for vehicle speed and HST pressure, control is performed so that the absorption torque curve of the HST pump () is returned from the high-engine speed side to the low-engine speed side.