JPS59115845U

JPS59115845U - Afterburn prevention device for internal combustion engines

Info

Publication number: JPS59115845U
Application number: JP925283U
Authority: JP
Inventors: 森川　利夫; 笹野　舜仙
Original assignee: トヨタ自動車株式会社
Priority date: 1983-01-26
Filing date: 1983-01-26
Publication date: 1984-08-04

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図は、本考案の第１の実施例のシステム全体図、第
２図は、本考案の第２の実施例のシステム全体図である
。１・・・・・・エンジン、２・・・・・・吸気マニホー
ルド、３・・・・・・気化器、５・・・・・・排気マニ
ホールド、６・・・・・・排気ガス再循環通路、７・・
・・・・排気ガス再循環制御弁、９・・・・・・ダイヤ
フラム装置、１２・・・・・・作動室、１６・・・・・
・第１の負圧通路、１７・・・・・・負圧制御弁、１９
・・・・・・ダイヤフラム装置、２２・・・・・・作動
室、２７・・・・・・第３の負圧通路、２９・・・・・
・負圧ポート、３０・・・・・・第２の負圧通路、３１
・・・・・・オリフィス。FIG. 1 is an overall system diagram of a first embodiment of the present invention, and FIG. 2 is an overall system diagram of a second embodiment of the invention. 1...engine, 2...intake manifold, 3...carburizer, 5...exhaust manifold, 6...exhaust gas recirculation Passage, 7...
... Exhaust gas recirculation control valve, 9 ... Diaphragm device, 12 ... Working chamber, 16 ...
・First negative pressure passage, 17... Negative pressure control valve, 19
...Diaphragm device, 22...Working chamber, 27...Third negative pressure passage, 29...
・Negative pressure port, 30...Second negative pressure passage, 31
...orifice.

Claims

[Scope of utility model registration request]

An exhaust gas recirculation passage connecting the exhaust manifold and intake manifold of the engine, and a diaphragm device interposed in the middle of the exhaust gas recirculation passage and having a working chamber, and only when the pressure in the working chamber is negative pressure. an opening exhaust gas recirculation control valve; a first negative pressure passage communicating between the working chamber of the exhaust gas recirculation control valve and the intake manifold; and a throttle of the carburetor and the working chamber of the exhaust gas recirculation control valve. a second negative pressure passage communicating with a negative pressure port provided directly above the valve;
a negative pressure control valve that is interposed in the first negative pressure passage and includes a diaphragm device having a working chamber, and opens only when the pressure in the working chamber is a high negative pressure generated in the intake manifold during deceleration; Afterburn prevention for an internal combustion engine, comprising a third negative pressure passage communicating between the working chamber of the negative pressure control valve and the intake manifold, and an orifice interposed in the middle of the second negative pressure passage. Device.