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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 9151017 B1

PDFFull Text
Date of Patent:
Oct. 06, 2015

Filed:

Jan. 05, 2012

Wheel loader

Applicants:

Satoru Kaneko, Naka, JP;

Takashi Ikimi, Hitachi, JP;

Hidekazu Moriki, Hitachinaka, JP;

Noritaka Ito, Ushiku, JP;

Hiroaki Yanagimoto, Kasumigaura, JP;

Inventors:

Satoru Kaneko, Naka, JP;

Takashi Ikimi, Hitachi, JP;

Hidekazu Moriki, Hitachinaka, JP;

Noritaka Ito, Ushiku, JP;

Hiroaki Yanagimoto, Kasumigaura, JP;

Assignee:

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

Attorney:

Baker Botts L.L.P.

Primary Examiner:

Calvin Cheung

Assistant Examiner:

Paula L Schneider

Int. Cl.
CPC ...
B60L 9/00 (2006.01); B60L 11/00 (2006.01); G05D 1/00 (2006.01); G05D 3/00 (2006.01); G06F 7/00 (2006.01); G06F 17/00 (2006.01); E02F 9/20 (2006.01); E02F 9/22 (2006.01); B60W 20/00 (2006.01); B60W 50/08 (2012.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 10/30 (2006.01); B60W 30/18 (2012.01); B60K 6/46 (2007.10);
U.S. Cl.
CPC ...
E02F 9/2075 (2013.01); B60K 6/46 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/30 (2013.01); B60W 20/108 (2013.01); B60W 30/18 (2013.01); B60W 50/087 (2013.01); E02F 9/2079 (2013.01); E02F 9/2235 (2013.01); E02F 9/2296 (2013.01); B60W 2300/121 (2013.01); Y02T 10/6217 (2013.01); Y02T 10/6286 (2013.01); Y10S 903/93 (2013.01);
Abstract

A hybrid wheel loader is provided, the hybrid wheel loader achieving high work efficiency even with a short supply of power to be output relative to a vehicle power requirement. The hybrid wheel loader includes a motor generatorconnected to an engine (), a hydraulic pump () connected to the motor generator, a hydraulic actuator () driven by hydraulic oil supplied from the hydraulic pump, a travel electric motor () for driving wheels (), and an electrical storage device () connected to each of the motor generator and the electrical storage device via respective inverters (). When a total requirement power value is greater than a hybrid output upper limit value, either one of a hydraulic requirement power value Pf and a travel requirement power value Prun is limited according to an operation of the wheel loader to thereby set the total requirement power value to a value equal to, or less than, the hybrid output upper limit value.

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