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:
Oct. 06, 2009
Filed:
Aug. 11, 2005
Yuuichi Iwamoto, Ishikawa, JP;
Yuuichi Iwamoto, Ishikawa, JP;
Komatsu Ltd., Tokyo, Minato-Ku, JP;
Abstract
A load control device for an engine of a work vehicle that purposes to render the work vehicle, such as a wheel loader or the like, capable of raising a vehicle speed in a short period of time by providing a sufficient traction force when a high traveling load is imposed, without causing degradation of a vehicle body performance, waste of energy, and other problems. The load control device is provided with variable displacement hydraulic pumps () being provided with absorption torque changing means () for changing absorption torque. A controller () determines whether a traveling load is in a high state, and when it has been determined that the traveling load is in the high state, control for lowering the absorption torque for the hydraulic pumps () is carried out. This control is carried out, provided, for example, that a 'power mode' is selected with the power mode switch (). The determination that the traveling load is in the high state can be made by determining that the wheel loader () is in an acceleration state.