JPS63128208U

JPS63128208U -

Info

Publication number: JPS63128208U
Application number: JP1998087U
Authority: JP
Priority date: 1987-02-16
Filing date: 1987-02-16
Publication date: 1988-08-22

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例を示すロータリバ
ルブを備えた吸気装置の概略断面図、第２図は第
１図のロータリバルブの拡大断面図、第３図は本
考案のロータリバルブの第２実施例を示す断面図
、第４図はロータリバルブの特性図、第５図は従
来の吸気装置を備えたエンジンの要部概略断面図
、第６図は従来のロータリバルブを備えた吸気装
置の一部断面斜視図、第７図は従来の吸気装置の
断面図、第８図は第７図のロータリバルブの全開
時の拡大断面図である。１……吸気マニホルド、２……主吸気ポート、
３……副吸気ポート、４……くさび状部分、５…
…ロータリバルブ、９，１０……テーパ面、１１
……端面。 Fig. 1 is a schematic sectional view of an intake system equipped with a rotary valve showing a first embodiment of the present invention, Fig. 2 is an enlarged sectional view of the rotary valve of Fig. 1, and Fig. 3 is a schematic sectional view of the rotary valve of the present invention. A sectional view showing the second embodiment, FIG. 4 is a characteristic diagram of a rotary valve, FIG. 5 is a schematic sectional view of main parts of an engine equipped with a conventional intake system, and FIG. 6 is an intake system equipped with a conventional rotary valve. FIG. 7 is a partially sectional perspective view of the device, FIG. 7 is a sectional view of a conventional intake device, and FIG. 8 is an enlarged sectional view of the rotary valve of FIG. 7 when it is fully open. 1...Intake manifold, 2...Main intake port,
3...Sub-intake port, 4...Wedge-shaped portion, 5...
...Rotary valve, 9, 10...Tapered surface, 11
……End face.

Claims

[Scope of utility model registration request]

In an engine intake system, the engine intake system includes a main intake port that generates a swirl, a sub-intake port that performs intake to control the swirl, and a rotary valve that controls the inlet area of the sub-intake port. An intake system for an engine, characterized in that both ends of the rotary valve are formed into a wedge shape so as to taper toward the end face of the rotary valve.