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:
Apr. 19, 2016

Filed:

May. 14, 2013
Applicant:

Komatsu Ltd., Tokyo, JP;

Inventors:

Tsuyoshi Kobayashi, Hirakata, JP;

Katsuhiro Tsutsumi, Hitachinaka, JP;

Hirofumi Miyamoto, Tokyo, JP;

Assignee:

KOMATSU LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/24 (2006.01); F01N 3/20 (2006.01); B60K 13/04 (2006.01); E02F 9/08 (2006.01); F01N 13/18 (2010.01); F01N 13/00 (2010.01); F01N 3/021 (2006.01); F01N 3/10 (2006.01); F01N 13/08 (2010.01); F01N 3/28 (2006.01); F01N 3/035 (2006.01);
U.S. Cl.
CPC ...
F01N 3/206 (2013.01); B60K 13/04 (2013.01); E02F 9/0866 (2013.01); F01N 3/021 (2013.01); F01N 3/10 (2013.01); F01N 13/009 (2014.06); F01N 13/011 (2014.06); F01N 13/08 (2013.01); F01N 13/1805 (2013.01); F01N 13/1816 (2013.01); F01N 13/1822 (2013.01); B60Y 2200/412 (2013.01); F01N 3/035 (2013.01); F01N 3/2066 (2013.01); F01N 3/2882 (2013.01); F01N 2250/02 (2013.01); F01N 2340/02 (2013.01); F01N 2340/04 (2013.01); F01N 2470/16 (2013.01); F01N 2470/18 (2013.01); F01N 2470/20 (2013.01); F01N 2590/06 (2013.01); F01N 2590/08 (2013.01); F01N 2610/02 (2013.01); F01N 2610/1406 (2013.01); F01N 2610/1453 (2013.01); Y02T 10/20 (2013.01);
Abstract

Two sets of assemblies are arranged such that a diesel particulate filter device of an assembly as a first set, a selective catalytic reduction device of the assembly as the first set, a selective catalytic reduction device of an assembly as a second set, and a diesel particulate filter device of the assembly as the second set are located next to each other in this order. Respective first and second connection pipes are routed through a region directly underneath an arrangement region where the two selective catalytic reduction devices and the like are arranged, and connected to the respective diesel particulate filter devices. Thereby, an engine unit and a work vehicle which facilitate connection between an engine and an exhaust gas treatment structure and can reduce a load on the first and second connection pipes due to vibration can be achieved.


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