EXHAUST PIPE

PROBLEM TO BE SOLVED: To provide an exhaust pipe which suppresses the exfoliation of a partitioning plate having a double-structure by partitioning the inside of the exhaust pipe from an inner wall of the exhaust pipe.SOLUTION: A fuel addition valve 21 for adding fuel to exhaust emission is attached...

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1. Verfasser: MINAMINO KEIJI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an exhaust pipe which suppresses the exfoliation of a partitioning plate having a double-structure by partitioning the inside of the exhaust pipe from an inner wall of the exhaust pipe.SOLUTION: A fuel addition valve 21 for adding fuel to exhaust emission is attached to an exhaust pipe 10 in which the exhaust emission of an internal combustion engine flows. The exhaust pipe 10 is formed into a double-structure by a partitioning plate 14 whose portion opposing to an injection hole 22 of the fuel addition valve 21 is fixed to an inner wall 13 of the exhaust pipe 10. The partitioning plate 14 is fixed to the inner wall 13 at a first fixing region 18 and a second fixing region 19 which are separated to a peripheral direction of the exhaust pipe 10, and has a wavy region 15 which is formed into a wave plate shape, and whose wave string extends to a flow direction of the exhaust emission between the first fixing region 18 and the second fixing region 19.SELECTED DRAWING: Figure 2 【課題】排気管内を仕切って二重構造にしている仕切板が排気管の内壁から剥離してしまうことを抑制する排気管を提供する。【解決手段】内燃機関の排気が流れる排気管10には、排気に燃料を添加する燃料添加弁21が取り付けられている。排気管10は、燃料添加弁21の噴孔22と対向する部分が当該排気管10の内壁13に固定された仕切板14によって二重構造にされている。仕切板14は、内壁13に対して、当該排気管10の周方向に離間した第1固定部位18と第2固定部位19とにおいて固定されており、第1固定部位18と第2固定部位19との間に、波板状であり波筋が排気の流動方向に延びている波状部位15を有している。【選択図】図2