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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 11274745 B1

PDFFull Text
Date of Patent:
Mar. 15, 2022

Filed:

Dec. 14, 2016

Wheel loader

Applicant:

Hitachi Construction Machinery Co., Ltd., Tokyo, JP;

Inventors:

Koji Hyodo, Kasumigaura, JP;

Masashi Yamashita, Ushiku, JP;

Tetsuji Tanaka, Abiko, JP;

Katsutaka Hara, Toride, JP;

Masaki Nukii, Ushiku, JP;

Isamu Aoki, Tsukuba, JP;

Assignee:

HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;

Attorney:

Mattingly & Malur, PC

Primary Examiner:

Logan M Kraft

Assistant Examiner:

Joshua Campbell

Int. Cl.
CPC ...
F01P 11/10 (2006.01); F16H 61/18 (2006.01); F02B 39/16 (2006.01); F16H 59/78 (2006.01); F02D 29/02 (2006.01); F16H 63/50 (2006.01); F01P 7/04 (2006.01); F02B 37/24 (2006.01); B60W 30/184 (2012.01); B60K 11/08 (2006.01); F02D 41/00 (2006.01); F01P 7/16 (2006.01); B60W 50/12 (2012.01); F01P 5/04 (2006.01); F02D 45/00 (2006.01); F02D 29/04 (2006.01); F16H 61/16 (2006.01); F02D 31/00 (2006.01); F01P 5/02 (2006.01);
U.S. Cl.
CPC ...
F16H 61/18 (2013.01); B60K 11/085 (2013.01); B60W 30/1843 (2013.01); B60W 50/12 (2013.01); F01P 5/04 (2013.01); F01P 7/044 (2013.01); F01P 7/16 (2013.01); F01P 11/10 (2013.01); F02B 37/24 (2013.01); F02B 39/16 (2013.01); F02D 29/02 (2013.01); F02D 41/0007 (2013.01); F02D 45/00 (2013.01); F16H 59/78 (2013.01); F16H 63/50 (2013.01); B60W 2510/0633 (2013.01); B60W 2510/0676 (2013.01); B60W 2520/10 (2013.01); B60W 2710/0644 (2013.01); B60W 2720/10 (2013.01); B60Y 2200/41 (2013.01); B60Y 2400/435 (2013.01); F01P 5/02 (2013.01); F01P 2025/66 (2013.01); F01P 2060/02 (2013.01); F01P 2060/14 (2013.01); F01P 2060/16 (2013.01); F02B 2039/164 (2013.01); F02D 29/04 (2013.01); F02D 31/006 (2013.01); F02D 2200/021 (2013.01); F16H 2061/166 (2013.01); F16H 2061/185 (2013.01); Y02T 10/12 (2013.01);
Abstract

To curb temperature rises in a control device for a supercharger and extend the life of the control device for the supercharger, a work vehicle includes a variable geometry supercharger with variable boost pressure, and a working device driven by pressure oil discharged from a working hydraulic pump, the work vehicle further including: a supercharger control device adapted to control the supercharger; a temperature detection device adapted to detect temperature of the supercharger control device; and a main control device adapted to limit at least one of maximum rotational speed of an engine and maximum vehicle speed of the work vehicle in case the temperature of the supercharger control device is above a predetermined temperature as compared to case the temperature of the supercharger control device is below the predetermined temperature.

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