JPS59156123U

JPS59156123U - Internal combustion engine intake system

Info

Publication number: JPS59156123U
Application number: JP5236183U
Authority: JP
Inventors: 村中　重夫; 靖雄高木; 大川　晃三郎
Original assignee: 日産自動車株式会社
Priority date: 1983-04-07
Filing date: 1983-04-07
Publication date: 1984-10-19

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

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

第１図は従来の内ｉ機関の吸気装置を示す断面図、第２
図はこの考案に係る内燃機関の吸気装置の一実施例を示
すその断面図、第３図は第２図のｍ−ｍ矢視図である。 −１６・・・吸気ポート、１８・・・吸気弁、２３・・
・主吸気通路、２４・・・絞り弁、２５・・・副絞り弁
、２６・・・インジェクタ、３０・・・副吸気通路、３
２・・・副吸気通路の下流開口、３３・・・副吸気通路
の下流開口部。Figure 1 is a sectional view showing the intake system of a conventional internal engine;
The figure is a sectional view showing an embodiment of the intake system for an internal combustion engine according to the present invention, and FIG. 3 is a view taken along the line mm in FIG. 2. -16...Intake port, 18...Intake valve, 23...
・Main intake passage, 24... Throttle valve, 25... Sub-throttle valve, 26... Injector, 30... Sub-intake passage, 3
2...Downstream opening of the sub-intake passage, 33...Downstream opening of the sub-intake passage.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

絞り弁が配設された主吸気通路と、吸気ポートを開閉す
る吸気弁と、吸気ポートに向かって燃料を噴射する燃料
噴射弁と、絞り弁より下流の主吸気通路内に配設された
副絞り弁と、副絞り弁をバイパスしその下流端が吸気ポ
ート方向を指向して開口する副吸気通路と、を備えた内
燃機関の吸気装置において、前記副吸気通路の下流開口
を前記吸気弁から離れた吸気ポート上流側に配設すると
ともに、該開口部の通路断面積を下流開口に向かって除
々に増大させたことを特徴とする内燃機関の吸気装置。A main intake passage in which a throttle valve is installed, an intake valve that opens and closes an intake port, a fuel injection valve that injects fuel toward the intake port, and a sub-intake passage that is installed in the main intake passage downstream of the throttle valve. In an intake system for an internal combustion engine, the intake device for an internal combustion engine includes a throttle valve and a sub-intake passage that bypasses the sub-throttle valve and opens with its downstream end oriented toward an intake port, wherein the downstream opening of the sub-intake passage is separated from the intake valve. An intake system for an internal combustion engine, characterized in that the intake port is disposed upstream of a separate intake port, and the passage cross-sectional area of the opening gradually increases toward the downstream opening.