JPS61118953U

JPS61118953U -

Info

Publication number: JPS61118953U
Application number: JP77285U
Authority: JP
Priority date: 1985-01-08
Filing date: 1985-01-08
Publication date: 1986-07-26

Description

[Brief explanation of the drawing]

第１図は、本考案の第１の実施例に係るエンジ
ンの排気ガス再循環装置の上面図、第２図は、本
考案の第２の実施例に係るエンジンの排気ガス再
循環装置の上面図、第３図は、本考案の第３の実
施例に係るエンジンの排気ガス再循環装置の上面
図、第４図は、第３図の―断面の拡大図、第
５図は、本考案の第４の実施例に係るエンジンの
排気ガス再循環装置の上面図、第６図は、本考案
の第５の実施例に係るエンジンの排気ガス再循環
装置の上面図、第７図は、第６図の―断面の
拡大図、第８図は、従来のエンジン（独立吸気エ
ンジン）の排気ガス再循環装置の上面図、第９図
は、独立吸気エンジンでない通常のエンジンにつ
いての排気ガス再循環装置の上面図である。１，２，３，４……吸気通路、５……スロツト
ル弁、１１……エンジン（独立吸気エンジン）、
１３……排気マニホルド、１４……スロツトル弁
の下流、２１……連通管、５１……連通路（連通
管）、２３，２４……接続点どおしの中央部、２
５……排気ガス連通管、２６……排気ガス連通管
の中央部、３８……排気ガス再循環制御弁、３９
……排気ガス再循環通路、６１，６２，６３，６
４……接続点。 FIG. 1 is a top view of an exhaust gas recirculation device for an engine according to a first embodiment of the present invention, and FIG. 2 is a top view of an exhaust gas recirculation device for an engine according to a second embodiment of the present invention. 3 is a top view of an exhaust gas recirculation system for an engine according to a third embodiment of the present invention, FIG. 4 is an enlarged cross-sectional view of FIG. FIG. 6 is a top view of the exhaust gas recirculation device for an engine according to the fourth embodiment of the present invention, and FIG. 7 is a top view of the exhaust gas recirculation device for the engine according to the fifth embodiment of the present invention. Fig. 6 is an enlarged cross-sectional view, Fig. 8 is a top view of the exhaust gas recirculation system for a conventional engine (independent intake engine), and Fig. 9 is an enlarged view of the exhaust gas recirculation system for a conventional engine (independent intake engine). It is a top view of a circulation device. 1, 2, 3, 4...Intake passage, 5...Throttle valve, 11...Engine (independent intake engine),
13...Exhaust manifold, 14...Downstream of the throttle valve, 21...Communication pipe, 51...Communication passage (communication pipe), 23, 24...Central portion between the connection points, 2
5... Exhaust gas communication pipe, 26... Central part of exhaust gas communication pipe, 38... Exhaust gas recirculation control valve, 39
...Exhaust gas recirculation passage, 61, 62, 63, 6
4... Connection point.

Claims

[Scope of utility model registration request]

An exhaust gas recirculation device for recirculating exhaust gas for a multi-cylinder engine in which a throttle valve is provided in each intake passage communicating with each cylinder, and the exhaust gas recirculation device is a hollow cylinder having a closed space. A communication pipe is provided, the communication pipe is placed substantially perpendicular to each of the intake passages, and each of the intake passages communicates with the respective communication pipe downstream of the throttle valve, and each of the intake passages communicates with the communication pipe, respectively, downstream of the throttle valve. Approximately central portions of the connection points of two adjacent intake passages to the communication pipe are communicated with each other by an exhaust gas communication pipe, and the approximately central portion of the exhaust gas communication pipe and the exhaust manifold are connected to the exhaust gas communication pipe. An exhaust gas recirculation device for an engine, characterized in that the exhaust gas recirculation device is communicated with each other by a recirculation passage, and an exhaust gas recirculation control valve is disposed in the middle of the exhaust gas recirculation passage.