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:
Jul. 07, 2015
Filed:
Feb. 16, 2011
Satoshi Asami, Hiratsuka, JP;
Jun Koizumi, Hadano, JP;
Shotaro Ishii, Sagamihara, JP;
Takahisa Oasa, Hiratsuka, JP;
Ai Haginiwa, Hiratsuka, JP;
Masahiro Minato, Hiratsuka, JP;
Satoshi Asami, Hiratsuka, JP;
Jun Koizumi, Hadano, JP;
Shotaro Ishii, Sagamihara, JP;
Takahisa Oasa, Hiratsuka, JP;
Ai Haginiwa, Hiratsuka, JP;
Masahiro Minato, Hiratsuka, JP;
KOMATSU LTD., Tokyo, JP;
Abstract
A work vehicle includes a controller. The controller is configured to determine whether low-load conditions indicating that the work vehicle is in a low-load state are satisfied. The controller is configured to control an engine so that an upper limit value of an output torque of the engine when the low-load conditions are satisfied is made less than when the low-load conditions are not satisfied. Also, the controller is configured to vary a reduction amount of the upper limit value of the output torque of the engine when the low-load conditions are satisfied, in accordance with variation in at least one of vehicle speed, vehicle acceleration, and engine-rotation-speed acceleration, and in accordance with variation in engine rotation speed.