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Title:
ENGINE DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/157286
Kind Code:
A1
Abstract:
This engine device comprises: a urea mixing pipe (39) that sprays urea water into the exhaust gas of an engine (1); and an exhaust gas purification case (29) that removes nitrogen oxides from the exhaust gas of the engine (1). An exhaust gas inlet pipe (36) of the exhaust gas purification case (29) is connected to the outlet of the urea mixing pipe (39) via a flange (40). Exhaust gas outlet-side end sections of an outer pipe (88) and an inner pipe (89) in the urea mixing pipe (39), which has a double-pipe structure, are connected to the exhaust gas inlet-side end sections of an outer pipe (86) and an inner pipe (87) in the exhaust gas inlet pipe (36), which has a double-pipe structure. The engine device is configured such that: a small-diameter fitting section (89a, 90) is formed in the end section of the inner pipe (89) of the urea mixing pipe (39); and the small-diameter fitting section (89a, 90) is inserted into the inside of the inner pipe (87) of the exhaust gas inlet pipe (36).

Inventors:
SANDOU YOSHIYUKI (JP)
Application Number:
PCT/JP2014/058431
Publication Date:
October 02, 2014
Filing Date:
March 26, 2014
Export Citation:
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Assignee:
YANMAR CO LTD (JP)
International Classes:
F01N13/08; F01N3/08; F01N3/24; F16L23/00
Foreign References:
JP2005226528A2005-08-25
JPS5453121U1979-04-12
JPS52102511U1977-08-04
JPH06212967A1994-08-02
JP2001132872A2001-05-18
JP2000051930A2000-02-22
JP2000248931A2000-09-12
JP2006322343A2006-11-30
JP2009114910A2009-05-28
JP2012127311A2012-07-05
Other References:
See also references of EP 2980382A4
Attorney, Agent or Firm:
WATANABE RYUICHI (JP)
Ryuichi Watanabe (JP)
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