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:
Apr. 02, 2024
Filed:
Dec. 17, 2021
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Masatoshi Hoshino, Ibaraki, JP;
Seiji Hijikata, Ibaraki, JP;
Yasutaka Tsuruga, Ibaraki, JP;
Ryou Yagisawa, Ibaraki, JP;
Shou Furukawa, Ibaraki, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
Provided is a work machine capable of achieving both low fuel consumption and ensuring of workability. The work machine is configured to, in a state where an output of an engine or hydraulic pump has increased to an increase threshold (S: Yes) with the rotational speed being at a first rotational speed (S: Yes), raise the rotational speed from the first rotational speed to a second rotational speed (S); in a process of raising the rotational speed to the second rotational speed, output, to a regulator, a signal instructing reduction in the discharge rate (S) so as to keep the output of the engine or hydraulic pump constant; and after the rotational speed has reached the second rotational speed, output, to the regulator, a signal instructing increase in the discharge rate (S) so as to make the output of the engine or hydraulic pump have a value corresponding to a request load.