JPS5994123U

JPS5994123U - Internal combustion engine helical intake port

Info

Publication number: JPS5994123U
Application number: JP18931982U
Authority: JP
Inventors: 廣田　信也
Original assignee: トヨタ自動車株式会社
Priority date: 1982-12-15
Filing date: 1982-12-15
Publication date: 1984-06-26

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 drawings]

第１図は本考案による内燃機関のヘリカル吸気ポートの
一つの実施例を示す縦断面図、第２図及び第３昭１各々
第１図の線■−■及び■−■に沿う断面図、第４図は第
１図の線ＩＶ−ＩＶの矢視図、第５図は本考案による内
燃機関のヘリカル吸気ポートの他の一つの実施例を示す
縦断面図である。１・・・シリンダヘッド、２・・・ヘリカル吸気ポート
、３・・・入口部、４・・・出口部、４ａ・・・開口端
、５・・・燃焼室、６・・・弁座部材、７・・・吸気弁
、８・・・弁軸、９・・・ガイド、スリーブ、１０・・
・膨出部、１１・・・旋回通路、１２・・・天井壁、１
３・・・周壁、１３ａ・・・衝壁部、１４・・・突起、
１５・・・突出壁面、１６・・・傾斜段差壁面。FIG. 1 is a longitudinal sectional view showing one embodiment of a helical intake port for an internal combustion engine according to the present invention; FIGS. 2 and 3 are sectional views taken along lines ■-■ and ■-■ in FIG. 1, respectively; 4 is a view along the line IV--IV in FIG. 1, and FIG. 5 is a longitudinal sectional view showing another embodiment of the helical intake port for an internal combustion engine according to the present invention. DESCRIPTION OF SYMBOLS 1... Cylinder head, 2... Helical intake port, 3... Inlet part, 4... Outlet part, 4a... Open end, 5... Combustion chamber, 6... Valve seat member , 7... Intake valve, 8... Valve stem, 9... Guide, sleeve, 10...
・Bulging part, 11... Turning passage, 12... Ceiling wall, 1
3... Peripheral wall, 13a... Barrier part, 14... Protrusion,
15... Protruding wall surface, 16... Inclined step wall surface.

Claims

[Scope of utility model registration request]

an inlet portion connected to the intake manifold and an outlet portion opening into the combustion chamber in a direction substantially perpendicular to the inlet portion; A bulging portion is provided that bulges toward the intake valve, and the bulging portion extends around the axis of the intake valve to form a turning passage therearound. The opposing portion is connected to the intake air flow that has collided with the opposing portion through the swirl passage.
The wall of the inlet section, which is continuous with the root of the bulge, is inclined to provide a velocity component toward the opening end and a velocity component directly toward the opening end, and the wall portion of the inlet section that is continuous with the root of the bulge section has a wall section that allows the intake air flowing through the inlet section to flow toward the opening end. What is claimed is: 1. A helical intake port for an internal combustion engine, characterized in that it is provided with an inclined surface section that is inclined to provide a direct velocity component.