Title:
建設機械
Document Type and Number:
Japanese Patent JP6458509
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress deterioration of a liquid reductant inside supply piping connected to an exhaust gas post-treatment device having a first processing part and a second processing part.SOLUTION: A hydraulic shovel 1 includes: a rear wall 13d partitioning a machine room 13; an engine 14 installed in the machine room 13; a fan 15a; an exhaust gas post-treatment device 17 having a first processing part 22 purifying exhaust gas of the engine 14, and purification efficiency of the first processing part being restored by heating, and a second processing part 23 selectively performing catalyst reduction of NOx contained in the exhaust gas; supply piping T2 connected to the exhaust gas post-treatment device 17 for supplying a liquid reductant into the exhaust gas; and partition plates 30, 32 installed between the rear wall 13d and the first processing part 22. Air passages P1, P2 are formed between the rear wall 13d and the partition plates 30, 32, through which the air flows by operation of the fan 15a. The supply piping T2 has a part installed inside the air passages P1, P2, in the machine room 13.SELECTED DRAWING: Figure 3
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Inventors:
Yuto Ogura
Oozaki Masakazu
Tatake Yae
Oozaki Masakazu
Tatake Yae
Application Number:
JP2015012367A
Publication Date:
January 30, 2019
Filing Date:
January 26, 2015
Export Citation:
Assignee:
Kobelco Construction Machinery Co., Ltd.
International Classes:
E02F9/00; B60K13/04; F01N3/08; F01N3/20; F01N3/28
Domestic Patent References:
| JP2013241808A | ||||
| JP2014121900A | ||||
| JP2014224428A | ||||
| JP2009196543A | ||||
| JP2014080907A | ||||
| JP2010007525A | ||||
| JP2013241809A |
Foreign References:
| WO2010004805A1 | ||||
| US20080121451 | ||||
| US20130000281 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Atsushi Yamamoto
Masataka Otani
Atsushi Yamamoto