JPS59150947U

JPS59150947U - Helical intake port

Info

Publication number: JPS59150947U
Application number: JP4478883U
Authority: JP
Inventors: 猛奥村; 清中西; 井上　「とく」太
Original assignee: トヨタ自動車株式会社
Priority date: 1983-03-30
Filing date: 1983-03-30
Publication date: 1984-10-09

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図は第２図のＩ−Ｉ線に沿ってみた本考案に係る内
燃機関の側面断面図、第２図は第１図の■−■線に沿っ
てみた平面断面図、第３図は本考案によるヘリカル型吸
気ポートの形状を図解的に示す側面図、第４図はヘリカ
ル型吸気ポートの形状を図解的に示す平面図、第５図は
第３図および第４図の■−■線に沿ってみた断面図、第
６図は第３図および第４図のＶｌ−Ｖｌ線に沿ってみた
断面図、第７図は第３図および第４図の■−■線に沿っ
てみた断面図、第８図は第３図および第４図の■−■線
に沿ってみた断面図、第９図は第３図および第４図のＩ
Ｘ−ＩＸ線に沿ってみた断面図、第１０、図はロータリ
弁の側面断面図、第１１図は口　　　　い−タリ弁の駆
動制御装置を示す図である。４・・・燃焼室、６・・・ヘリカル型吸気ポート、１２
・・・隔壁、２３・・・突起、２４・・・分岐路、２５
・・・ロータリ弁。第４図第９図Fig. 1 is a side sectional view of the internal combustion engine according to the present invention taken along the line I-I in Fig. 2, Fig. 2 is a plan sectional view taken along the line ■-■ in Fig. 1, and Fig. 3. is a side view schematically showing the shape of the helical intake port according to the present invention, FIG. 4 is a plan view schematically showing the shape of the helical intake port, and FIG. Figure 6 is a cross-sectional view taken along line Vl--Vl in Figures 3 and 4. Figure 7 is a cross-sectional view taken along line ■-■ in Figures 3 and 4. 8 is a sectional view taken along line ■-■ in FIGS. 3 and 4, and FIG. 9 is a sectional view taken along line I in FIGS. 3 and 4.
FIG. 10 is a sectional view taken along the line X-IX, FIG. 10 is a side sectional view of the rotary valve, and FIG. 11 is a view showing a drive control device for the rotary valve. 4... Combustion chamber, 6... Helical intake port, 12
... Partition wall, 23 ... Protrusion, 24 ... Branching path, 25
...Rotary valve. Figure 4 Figure 9

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 provided in the inlet passage part, and the branch passage is separated from the inlet passage part by a partition wall that projects downward from the upper wall surface of the intake port and extends from the inlet passage part to around the intake valve stem. The entire lower space of the branch passage communicates with the inlet passage portion in the cross section, and the passage walls of the inlet passage portion and the branch passage are integrally connected, and an on-off valve is provided in the branch passage. A helical intake port is provided to control the flow of intake air flowing through the branch passage by the on-off valve, and has a large number of protrusions formed on at least both side wall surfaces of the branch passage.