JPS61137846U

JPS61137846U -

Info

Publication number: JPS61137846U
Application number: JP2003485U
Authority: JP
Priority date: 1985-02-15
Filing date: 1985-02-15
Publication date: 1986-08-27

Description

[Brief explanation of drawings]

第１〜４図は本考案の一実施例としての内燃機
関の吸気通路構造を示すもので、第１図はその要
部の概略構成を示す模式図、第２図はその第２吸
気通路開閉弁の制御系を示すブロツク図であり、
第３，４図はその変形例を示すもので、第３図は
その概略構成図、第４図はその第１吸気通路およ
び第２吸気通路の接続関係を説明するための模式
図であり、第５，６図は従来の内燃機関の吸気通
路構造を示すもので、第５図ａ，ｂはいずれもそ
の作用を説明するためその要部の概略構成を示す
模式図、第６図はその作用を説明するためのグラ
フである。１……燃焼室、２……ヘリカルポート、３……
第１吸気通路としての主吸気通路、３Ａ……主吸
気通路の吸気取入口、３ａ……主吸気通路のシリ
ンダヘツド部分、３ｂ……主吸気通路の吸気マニ
ホルド部分、３ｃ……主吸気通路の延長部、４…
…吸気スワール制御用第２吸気通路としての副吸
気通路、４ａ……吸気取入口、６……吸気弁、７
……吸気取入口、８……開閉弁、９……アクチユ
エータ、１０……コントローラ、１１……回転数
センサ、１２……負荷センサ、１３，１４……タ
ンク、３１〜３４……第１吸気通路としての主吸
気通路、４１〜４４……吸気スワール制御用第２
吸気通路としての副吸気通路、８１〜８４……開
閉弁、Ｔ……タンク、＃１〜＃４……気筒。 1 to 4 show the structure of an intake passage of an internal combustion engine as an embodiment of the present invention. FIG. FIG. 2 is a block diagram showing a valve control system;
3 and 4 show modifications thereof, FIG. 3 is a schematic configuration diagram thereof, and FIG. 4 is a schematic diagram for explaining the connection relationship between the first intake passage and the second intake passage, Figures 5 and 6 show the structure of the intake passage of a conventional internal combustion engine. Figures 5a and 5b are both schematic diagrams showing the schematic structure of its main parts to explain its operation, and Figure 6 is a schematic diagram of its main parts. It is a graph for explaining the effect. 1... Combustion chamber, 2... Helical port, 3...
Main intake passage as the first intake passage, 3A...Intake port of the main intake passage, 3a...Cylinder head part of the main intake passage, 3b...Intake manifold part of the main intake passage, 3c...Intake port of the main intake passage. Extension part, 4...
...Auxiliary intake passage as a second intake passage for intake swirl control, 4a...Intake intake port, 6...Intake valve, 7
... Intake intake port, 8 ... Opening/closing valve, 9 ... Actuator, 10 ... Controller, 11 ... Rotation speed sensor, 12 ... Load sensor, 13, 14 ... Tank, 31 to 34 ... First intake Main intake passage as a passage, 41 to 44...second intake swirl control passage
Sub-intake passages as intake passages, 81-84...open/close valves, T...tank, #1-#4...cylinders.

Claims

[Scope of utility model registration request]

A first intake passage connected to a combustion chamber of the internal combustion engine via a helical port, and a second intake passage for intake swirl control connected to the first intake passage, wherein the first intake passage is connected to the combustion chamber of the internal combustion engine. The second intake passage is configured as an inertial intake passage whose length and passage cross-sectional area are set so as to exhibit an inertial effect in the low rotational speed range, and the intake port of the second intake passage is connected to the first intake passage. An intake passage structure for an internal combustion engine, characterized in that the intake passage is connected to the upstream side.