JPS59152141U

JPS59152141U - Spark ignition engine intake system

Info

Publication number: JPS59152141U
Application number: JP4587283U
Authority: JP
Inventors: 靖雄高木; 村中　重夫; 大川　晃三郎
Original assignee: 日産自動車株式会社
Priority date: 1983-03-31
Filing date: 1983-03-31
Publication date: 1984-10-12

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、従来の副吸気通路を有する吸気装置要部−例
の縦断面図、第２図は、本考案の一実施例を示す図で、
同図ａは、主吸気通路と燃焼室要部の断面平面図、同図
すは、その平面図、第３図は、本考案突起物形成法の他
の実施例斜視図、第４図は、本考案の効果を示す吸気流
速対乱流成分線図である。３・・・・・・第１次（主）絞り弁、８・・・・・・燃
焼室、９・・・・・・吸気弁、１３・・・・・・第壱次
絞り弁、１４・・・・・・主空気通路、２１・・・・・
・弁座、２２・・・・・・突起物、Ａ・・・・・・副吸
気通路。　　　゛FIG. 1 is a longitudinal sectional view of an example of the main part of an intake device having a conventional sub-intake passage, and FIG. 2 is a diagram showing an embodiment of the present invention.
Figure a is a cross-sectional plan view of the main intake passage and the main part of the combustion chamber, the same figure is a plan view thereof, Figure 3 is a perspective view of another embodiment of the protrusion forming method of the present invention, and Figure 4 is a , is an intake flow velocity versus turbulence component diagram showing the effects of the present invention. 3... Primary (main) throttle valve, 8... Combustion chamber, 9... Intake valve, 13... First throttle valve, 14 ...Main air passage, 21...
・Valve seat, 22...Protrusion, A...Sub-intake passage.゛

Claims

[Scope of utility model registration request]

a main throttle valve that controls the amount of intake air in the main intake passage of the engine;
an intake valve at the inlet of the combustion chamber, a sub-intake passage that branches the intake air downstream of the throttle valve and rejoins the main intake passage just before the intake valve; In a spark ignition engine having a secondary throttle valve that controls the amount of diverted air flowing into the intake passage, the direction in which the diverted air exiting from the confluence opening passes through the intake valve and is introduced into the combustion chamber is determined by A protrusion is provided so as to be substantially parallel to the valve seat of the intake valve and oriented substantially tangentially to the cylinder forming the combustion chamber, and on an extension in the introduction direction after passing the valve seat. An intake device for a spark ignition engine, characterized in that it is configured to generate turbulence.