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.

Date of Patent:
Dec. 20, 2016

Filed:

Feb. 04, 2013
Applicant:

Kcm Corporation, Hyogo, JP;

Inventors:

Koji Hyodo, Kasumigaura, JP;

Isamu Aoki, Tsukuba, JP;

Tetsuji Tanaka, Abiko, JP;

Keigo Kikuchi, Ryugasaki, JP;

Assignee:

KCM Corporation, Hyogo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 31/00 (2006.01); F02D 41/02 (2006.01); F02D 41/08 (2006.01); B60K 31/00 (2006.01); F16H 63/50 (2006.01); F16H 59/46 (2006.01); F02D 29/02 (2006.01);
U.S. Cl.
CPC ...
F02D 31/001 (2013.01); B60K 31/00 (2013.01); F02D 31/007 (2013.01); F02D 41/0215 (2013.01); F02D 41/083 (2013.01); F16H 63/50 (2013.01); B60W 2510/1005 (2013.01); B60W 2710/0644 (2013.01); B60Y 2400/426 (2013.01); F02D 29/02 (2013.01); F02D 2200/101 (2013.01); F02D 2200/602 (2013.01); F02D 2400/12 (2013.01); F16H 2059/467 (2013.01);
Abstract

An engine control device for work vehicle includes: a target rotation speed setting unit that sets a target rotation speed of an engine corresponding to an operation amount of an accelerator pedal; a rotation speed control unit that controls a rotation speed of the engine according to the target rotation speed; a travel driving unit that transmits rotation of the engine to wheels via a torque converter; a speed ratio detection unit that detects a speed ratio between an input shaft and an output shaft of the torque converter; and a target rotation speed correction unit that corrects the target rotation speed set by the target rotation speed setting unit so as to increase the target rotation speed based on the speed ratio when the operation amount of the accelerator pedal is smaller than a predetermined value and the speed ratio detected by the speed ratio detection unit is smaller than a predetermined value within a range which is equal to or greater than 0 and less than 1.


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