JPS63130616U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本考案の第１の実施例に係る二重排
気管の縦断面図、第２図は、本考案の第１の実施
例に係る二重排気管が使用されている自動車の側
面図、第３図は、パイプの中に排気ガスを流した
直後に排気ガスの温度がどの程度下がるかを調べ
るための実験の説明図、第４図は、第３図の実験
結果をグラフにして表した図、第５図は、本考案
の第２の実施例に係る二重排気管の縦断面図、第
６図は、従来の二重排気管の縦断面図である。 １……二重排気管、２……内管、３……外管。 FIG. 1 is a longitudinal sectional view of a double exhaust pipe according to the first embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view of a car in which the double exhaust pipe according to the first embodiment of the present invention is used. A side view, Figure 3 is an explanatory diagram of an experiment to find out how much the temperature of exhaust gas drops immediately after flowing exhaust gas into a pipe, and Figure 4 is a graph of the experimental results in Figure 3. FIG. 5 is a vertical cross-sectional view of a double exhaust pipe according to a second embodiment of the present invention, and FIG. 6 is a vertical cross-sectional view of a conventional double exhaust pipe. 1...double exhaust pipe, 2...inner pipe, 3...outer pipe.

Claims (1)

【実用新案登録請求の範囲】 内管と外管とからなり、該外管の中に該外管と
の間に間隔をあけて前記内管が配置されている二
重排気管において、 前記内管の肉厚は前記外管の肉厚よりも薄くさ
れていることを特徴とする二重排気管。[Claims for Utility Model Registration] A double exhaust pipe consisting of an inner pipe and an outer pipe, in which the inner pipe is disposed within the outer pipe with a space between the outer pipe and the inner pipe. A double exhaust pipe characterized in that the wall thickness of the pipe is thinner than the wall thickness of the outer pipe.