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:
Feb. 28, 2017
Filed:
Dec. 27, 2013
Komatsu Ltd., Tokyo, JP;
Shinji Kaneko, Oyama, JP;
Taishi Oiwa, Naka-gun, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A control device includes a target vehicle speed converter converting a first accelerator opening detected by an accelerator opening sensor into a target vehicle speed, an accelerator opening target value setting unit calculating a second accelerator opening by feedback control so that a deviation between the target vehicle speed and an actual vehicle speed becomes zero, an addition unit adding the first and second accelerator openings to obtain a third accelerator opening, a first maximum absorption torque calculator calculating a first maximum absorption torque of a traveling hydraulic pump based on the third accelerator opening, a second maximum absorption torque calculator calculating a second maximum absorption torque of the traveling hydraulic pump based on a rotational speed of the engine, and an HST pump electromagnetic proportional control output current converter converting a smaller one of the first and second maximum absorption torques into a target absorption torque.