JPS589926U

JPS589926U - Flow path control device for helical intake port

Info

Publication number: JPS589926U
Application number: JP10378381U
Authority: JP
Inventors: 前田　頼成
Original assignee: トヨタ自動車株式会社
Priority date: 1981-07-15
Filing date: 1981-07-15
Publication date: 1983-01-22
Also published as: JPS6026184Y2

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■−■線１こ沿ってみた断面
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
流路制御装置の全体図、第１０図は第９図の一部を示す
図、第１１図は摺動弁の別の実施例の側面断面図、第１
２図は摺動弁の開弁領域を示す図である。５・・・・・・吸気弁、６・・・・・・ヘリカル型吸気
ポート、１４・・・・・・分岐路、１８・・・・・・摺
動弁、１９・・・・・・中空スリーブ、２０・・・・・
・弁体ミ２２・・・・・・ピストン、２８ａ、２８ｂ・
・・・・・空気逃し穴、２８Ｃ・・・・・・空気逃し孔
、３０・・・・・・作動油圧室。Fig. 1 is a plan view of the internal combustion engine according to the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a perspective view showing the shape of the helical intake port, Fig. 4 is a plan view of Fig. 3, Fig. 5 is a side sectional view taken along the branch road in Fig. 3, Fig. 6 is a sectional view taken along the Figure 7 is a cross-sectional view taken along line ■-■ in Figure 4, Figure 8 is a cross-sectional view taken along line ■-■ in Figure 4, Figure 9 is an overall view of the flow path control device, and Figure 9 is a cross-sectional view taken along line ■-■ in Figure 4. 10 is a diagram showing a part of FIG. 9, FIG. 11 is a side sectional view of another embodiment of the sliding valve, and FIG.
FIG. 2 is a diagram showing the opening area of the sliding valve. 5... Intake valve, 6... Helical intake port, 14... Branch path, 18... Sliding valve, 19... Hollow sleeve, 20...
・Valve body Mi 22...Piston, 28a, 28b・
...Air relief hole, 28C...Air release hole, 30...Operating hydraulic chamber.

Claims

[Scope of utility model registration request]

In a helical intake port configured with a spiral part formed in the intake valve layer 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 passage communicating with the spiral terminal end of the part is formed in the cylinder head, and an on-off valve insertion hole extending across the branch is formed in the cylinder head, and the opening/closing of the branch passage is controlled in the on-off valve insertion hole. inserting a hollow sleeve equipped with a valve body for the purpose of providing a piston connected to the valve body and a hydraulic pressure chamber for the piston, connecting the hydraulic pressure chamber to a hydraulic power source; A flow path control device for a helical intake port, in which an air escape hole is formed in the center of the valve body to communicate an internal chamber of a hollow sleeve defined by the valve body with the inside of the branch passage.