JPS5827534U - Flow path control device for helical intake port - Google Patents

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 the drawing]

第１図は本考案に係る内燃機関の平面図、第２図は第１
図の■−■線に沿ってみた断面図、第３図はヘリカル型
吸気ポートの形状を示す斜視図、第４図は第３図の平面
図、第５図は第３図の分岐路に沿って切断した側面断面
図、第６図は第４図のＶＩ−ＶＩ線に沿ってみた断面図
、第７図は第４図の■−■線に沿ってみた断面図、第８
図は第４図の■−■線に沿ってみた断面図、第９図は第
５図のＩＸ−ＩＸ線に沿ってみた断面図、第１０図は流
路制御装置の全体図、第１１図は流路制御装置の作動を
説明するためのフローチャート、第１２図は電磁制御弁
のソレノイドに印加されるパルスを示す線図、第１３図
はス゛ライド弁の開口面積を示す図、第１４図はスライ
ド弁半開状態を示す分岐路の拡大側面断面図、第１５図
はスライド弁全開状態を示す分岐路の拡大側面断面図で
ある。 ５・・・吸気弁、６・・・ヘリカル型吸気ポート、１４
・・・分岐路、１７・・・スライド弁、１８・・・弁軸
、３０・・・負圧ダイアフラム装置、３７・・・電磁制
御弁、５０・・−電子制御ユニット。 第１図 ３ 第５図 第６図 −第７図 今 第８図Fig. 1 is a plan view of an internal combustion engine according to the present invention, and Fig. 2 is a plan view of an internal combustion engine according to the present invention.
Figure 3 is a perspective view showing the shape of the helical intake port, Figure 4 is a plan view of Figure 3, Figure 5 is a branch of Figure 3. 6 is a sectional view taken along line VI-VI in FIG. 4, FIG. 7 is a sectional view taken along line ■-■ in FIG. 4, and FIG.
The figure is a sectional view taken along the line ■-■ in Fig. 4, Fig. 9 is a sectional view taken along the line IX-IX in Fig. 5, Fig. 10 is an overall view of the flow path control device, and Fig. The figure is a flow chart for explaining the operation of the flow path control device, Figure 12 is a diagram showing the pulses applied to the solenoid of the electromagnetic control valve, Figure 13 is a diagram showing the opening area of the slide valve, and Figure 14 is a diagram showing the pulses applied to the solenoid of the electromagnetic control valve. 15 is an enlarged side sectional view of the branch passage showing the slide valve in a half-open state, and FIG. 15 is an enlarged side sectional view of the branch passage showing the slide valve in the fully open state. 5... Intake valve, 6... Helical intake port, 14
Branch path, 17 Slide valve, 18 Valve stem, 30 Negative pressure diaphragm device, 37 Electromagnetic control valve, 50 Electronic control unit. Figure 1 3 Figure 5 Figure 6 - Figure 7 Now Figure 8

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 吸気弁側りに形成された渦巻部と、該渦巻部に接線状に
接続されかつほぼまっすぐに延びる入口通路部とにより
構成されたヘリカル型吸気ポートにおいて、上記入口通
路部から分岐されて上記渦巻部の渦巻終端部に連通ずる
分岐路をシリンダヘッド内に形成すると共に該分岐路を
該渦巻終端部に向けて上下方向に広がるラッパ状に形成
して該分岐路内に上下方向に摺動可能なスライド弁を挿
入し、機関吸入空気量が増大するに従って該スライド弁
を上昇させて該分岐路を開口せしめるようにしたヘリカ
ル型吸気ポートの流路制御装置。In a helical intake port configured with a spiral part formed on the side of the intake valve and an inlet passage part connected tangentially to the spiral part and extending almost straight, the spiral part is branched from the inlet passage part and connected to the spiral part. A branch path that communicates with the end of the spiral is formed in the cylinder head, and the branch path is formed in a trumpet shape that expands in the vertical direction toward the end of the spiral, so that it can slide vertically within the branch path. A flow path control device for a helical intake port, in which a slide valve is inserted, and as the engine intake air amount increases, the slide valve is raised to open the branch path.