JPS58130066U

JPS58130066U - Internal combustion engine exhaust purification device

Info

Publication number: JPS58130066U
Application number: JP19689882U
Authority: JP
Inventors: 健中村
Original assignee: 日産自動車株式会社
Priority date: 1982-12-30
Filing date: 1982-12-30
Publication date: 1983-09-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１及び第２図は従来の排気還流浄化装置を示す概略的
説明図。第３図イは本考案の第１の実施例を示す概略的
断面図。第３図口は第３図７のＸ−Ｘ断面図、第４図及
び第５図はそれぞれ第２及び第３の実施例を示す概略的
断面図。第６図は従来技術と本発明による排気浄化装置
の排気中のＮＯｘの含有量（ｐｐｍ）、各気筒に対する
排気還流率（ＥＧＲ率）及び空燃比（Ａ／Ｆ）の比較を
示す線図。３・・・・・・吸気マニフオルド、４・・・・・・気化
器、５・・・・・・１次側吸気通路、１３・・・・・・
還流排気導入装置、１４・・・・・・環状間隙、１５・
・・・・・還流排気導入管、１６．１６’・・・・・・
噴出口、１７・・・・・・空気導入制御弁、１８・・・
・・・空気導入通路、１９・・・・・・ダイヤフラム、
２２・・・・・・空気取入管、２４・・・・・・吸入負
圧導入管。 −一一一〜Ｌｉ− □□□□□□□□□□□□□□□□□□伺　糺１ｊ善Ｊ □ ■ 一一一一一一一一一一−−−−叫］１５ρ（ネ司）先哨
ｉ３1 and 2 are schematic explanatory diagrams showing a conventional exhaust gas recirculation purification device. FIG. 3A is a schematic sectional view showing the first embodiment of the present invention. 3 is a sectional view taken along line XX in FIG. 3, and FIGS. 4 and 5 are schematic sectional views showing the second and third embodiments, respectively. FIG. 6 is a diagram showing a comparison of the NOx content (ppm) in the exhaust gas, the exhaust gas recirculation rate (EGR rate), and the air-fuel ratio (A/F) for each cylinder between the conventional technology and the present invention. 3...Intake manifold, 4...Carburizer, 5...Primary intake passage, 13...
Reflux exhaust gas introduction device, 14... annular gap, 15.
...Recirculation exhaust gas introduction pipe, 16.16'...
Spout port, 17...Air introduction control valve, 18...
...Air introduction passage, 19...Diaphragm,
22... Air intake pipe, 24... Suction negative pressure introduction pipe. -111~Li- □□□□□□□□□□□□□□□□□□Kitten 1j Zen J □ ■ 111111111----Scream] 15ρ( Neji) Sensou i3

Claims

[Scope of utility model registration request]

In an internal combustion engine that has an exhaust gas recirculation device that communicates the engine exhaust passage with the intake passage and recirculates a portion of the exhaust gas into the intake air, a gas recirculation device that surrounds the intake passage downstream of the carburetor throttle valve in the engine intake passage and recirculates a portion of the exhaust gas into the intake passage, and in the flow direction of the intake passage. a recirculation exhaust gas introduction device that forms an annular gap whose inner wall forms the inner wall of the intake passage; an exhaust outlet that opens toward the annular gap, and has a predetermined distance in the flow direction from the exhaust outlet near the other end of the annular gap, and is located approximately perpendicularly to the inner wall of the annular gap. An exhaust gas purification device for an internal combustion engine, characterized in that it is provided with a communicating sliding recirculation exhaust gas introduction pipe.