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:
Mar. 16, 2021
Filed:
Sep. 24, 2019
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Koji Hyodo, Kasumigaura, JP;
Tetsuji Tanaka, Abiko, JP;
Isamu Aoki, Tsukuba, JP;
Masaki Nukii, Ushiku, JP;
Yuki Ahiko, Abiko, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
Provided is a working vehicle capable of, while reducing fuel consumption, improving traveling performance only when high traveling performance is required. A wheel loadercomprises: an engine; a variable displacement HST pump; a variable displacement HST motorconnected to the HST pumpthrough a closed circuit; pressure sensorsA,B configured to load pressure of the HST motor; and a controller, wherein the controlleris configured to, in a case of determining that a load pressure detection value P is included in a predetermined pressure range of greater than load pressure Pα corresponding to flat ground traveling and smaller than load pressure Pγ corresponding to an excavation operation, increase maximum rotational speed of the engineonly within the predetermined pressure range.