US 9,809,954 B2
Bulldozer
Akira Uno, Komatsu (JP)
Assigned to KOMATSU LTD., Tokyo (JP)
Appl. No. 14/389,513
Filed by KOMATSU LTD., Tokyo (JP)
PCT Filed Jul. 3, 2014, PCT No. PCT/JP2014/067763
§ 371(c)(1), (2) Date Sep. 30, 2014,
PCT Pub. No. WO2015/064152, PCT Pub. Date May 7, 2015.
Prior Publication US 2016/0265191 A1, Sep. 15, 2016
Int. Cl. F01N 1/00 (2006.01); F01N 3/10 (2006.01); E02F 9/08 (2006.01); B60K 13/04 (2006.01); E02F 3/76 (2006.01); F01N 13/00 (2010.01); B60K 13/02 (2006.01); E02F 9/16 (2006.01); F01N 13/18 (2010.01); E02F 3/84 (2006.01); F01N 3/20 (2006.01); F01N 3/021 (2006.01)
CPC E02F 9/0866 (2013.01) [B60K 13/02 (2013.01); B60K 13/04 (2013.01); E02F 3/7609 (2013.01); E02F 9/0891 (2013.01); E02F 9/163 (2013.01); F01N 13/009 (2014.06); F01N 13/1805 (2013.01); F01N 13/1811 (2013.01); B60Y 2200/411 (2013.01); E02F 3/844 (2013.01); F01N 3/021 (2013.01); F01N 3/103 (2013.01); F01N 3/2066 (2013.01); F01N 2340/04 (2013.01); F01N 2470/18 (2013.01); F01N 2470/22 (2013.01); F01N 2590/08 (2013.01); F01N 2610/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A bulldozer, comprising:
a blade arranged at a front end of the bulldozer relative to a front/rear direction of the bulldozer;
an engine disposed rearward of the blade in the front/rear direction of the bulldozer;
a cab disposed rearward of the engine in the front/rear direction of the bulldozer;
a cooling device disposed rearward of the cab in the front/rear direction of the bulldozer;
a first exhaust treatment device arranged and configured to treat exhaust from the engine, the first exhaust treatment device being disposed in front of the engine in the front/rear direction of the bulldozer, and lower than a first upper surface of the engine in a vertical direction of the bulldozer, the vertical direction being perpendicular to the front/rear direction;
a second exhaust treatment device arranged and configured to treat exhaust from the engine, the second exhaust treatment device being disposed above the engine in the vertical direction of the bulldozer; and
an engine cover covering the engine, the first exhaust treatment device, and the second exhaust treatment device, the engine cover including a second upper surface sloping forward and downward in the front/rear direction and vertical direction, respectively, of the bulldozer,
longitudinal directions of the first exhaust treatment device and the second exhaust treatment device extending along a lateral direction of the bulldozer, the lateral direction being perpendicular to the front/rear direction and the vertical direction of the bulldozer,
the second exhaust treatment device including a portion that overlaps the engine as seen in a top view of the bulldozer, and
as seen from a side of the bulldozer, a front edge of the second exhaust treatment device being positioned behind a rear edge of the first exhaust treatment device in the front/rear direction of the bulldozer.