Title:
建設機械
Document Type and Number:
Japanese Patent JP6445476
Kind Code:
B2
Abstract:
An exhaust pipe (7A) in an engine (7) is provided with an exhaust gas purifying device (10) with a urea selective reduction catalyst (13A) removing nitrogen oxides in an exhaust gas. The exhaust gas purifying device (10) is provided with a urea water injection valve (14) that injects urea water as a reducing agent to the upstream side of the urea selective reduction catalyst (13A). The urea water injection valve (14) is connected to a urea water tank (22) through a urea water pump (25). The urea water pump (25) is arranged in an upper side to the urea water tank (22). A return conduit line (30) in which the urea water flows from the urea water pump (25) toward the urea water tank (22) is disposed in an upper-lower direction between the urea water pump (25) and the urea water tank (22).
Inventors:
Shinya Abe
Application Number:
JP2016015514A
Publication Date:
December 26, 2018
Filing Date:
January 29, 2016
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E02F9/00; B60K13/04; F01N3/08
Domestic Patent References:
| JP2015161260A | ||||
| JP2015206223A | ||||
| JP2009138526A | ||||
| JP2012207552A | ||||
| JP2012225304A | ||||
| JP2015105590A |
Foreign References:
| CN104363984A |
Attorney, Agent or Firm:
Hirowa Patent Office
Kazuhiko Hirose
Kazuhiko Hirose
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