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Title:
CONSTRUCTION MACHINE
Document Type and Number:
Japanese Patent JP2012240518
Kind Code:
A
Abstract:

To compactly dispose first and second exhaust gas post-processing devices around an engine.

A PM collecting device 16 and a NOx removal device 19 are disposed to form an L-shape in plane view, and the NOx removal device 19 is disposed on the upper side of the PM collecting device 16. A second exhaust pipe 18 interconnecting the PM collecting device 16 and the NOx removal device 19 includes: a first horizontal pipe part 18A connected to an outflow port 16C of the PM collecting device 16; a second horizontal pipe part 18C connected to an inflow port 19B of the NOx removal device 19; and a vertical pipe part 18B vertically extending between the first and second horizontal pipe parts 18A, 18C. Thus, an occupation space in the horizontal direction of the second exhaust pipe 18 can be reduced. As a result, the PM collecting device 16 and the NOx removal device 19 can be compactly disposed around the engine 8.


Inventors:
KOBAYASHI TAKAHIRO
NAKAMURA TSUYOSHI
SATO KENSUKE
AZUMA HIROYUKI
Application Number:
JP2011111385A
Publication Date:
December 10, 2012
Filing Date:
May 18, 2011
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY
International Classes:
B60K13/04; E02F9/00
Domestic Patent References:
JP2009035111A2009-02-19
JP2008240677A2008-10-09
JP5296913B12013-09-25
JP2009184558A2009-08-20
JP2008156835A2008-07-10
JP2011021496A2011-02-03
Attorney, Agent or Firm:
Kazuhiko Hirose



 
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