JPH01126471U

JPH01126471U -

Info

Publication number: JPH01126471U
Application number: JP2164788U
Authority: JP
Priority date: 1988-02-20
Filing date: 1988-02-20
Publication date: 1989-08-29

Description

[Brief explanation of the drawing]

第１図〜第３図は本考案の第１実施例を示すも
ので、第１図は内燃機関のスロツトルボデーの縦
断面図、第２図は第１図の要部の横断面図、第３
図は第２図に示したアクチユエータの概略図、第
４図は第１図に示したバタフライバルブの開度―
バルブ閉じ側に作用するトルク特性線図、第５図
ａ〜ｃはバタフライバルブの開度変化と空気供給
路からの空気の流入との関係を示した概略説明図
、第６図はバタフライバルブのＯＰＥＮ側デユー
テイー比と開度との関係を大気中での開閉の場合
との比較で示した特性線図、第７図はバタフライ
バルブのＯＰＥＮ側デユーテイー比と流量との関
係を空気供給路からの空気流入がない場合との比
較で示した特性線図、第８図は本考案の第２実施
例を示す第１図と同様な縦断面図である。２…主空気通路、４…バイパス通路、６，５６
…バタフライバルブ、８，５８…空気供給路、１
１…アクチユエータ。 1 to 3 show a first embodiment of the present invention, in which FIG. 1 is a longitudinal cross-sectional view of a throttle body of an internal combustion engine, FIG. 2 is a cross-sectional view of the main part of FIG. 1, and FIG.
The figure is a schematic diagram of the actuator shown in Fig. 2, and Fig. 4 is the opening degree of the butterfly valve shown in Fig. 1.
The torque characteristic diagram acting on the valve closing side, Figures 5 a to c are schematic explanatory diagrams showing the relationship between the change in the opening degree of the butterfly valve and the inflow of air from the air supply path, and Figure 6 is the diagram of the characteristics of the butterfly valve. A characteristic diagram showing the relationship between the OPEN side duty ratio and the opening degree in comparison with the case of opening/closing in the atmosphere. Figure 7 shows the relationship between the OPEN side duty ratio and the flow rate of the butterfly valve from the air supply path. FIG. 8 is a characteristic diagram showing a comparison with the case where there is no air inflow, and is a longitudinal sectional view similar to FIG. 1 showing the second embodiment of the present invention. 2...Main air passage, 4...Bypass passage, 6,56
...Butterfly valve, 8, 58...Air supply path, 1
1...Actuator.

補正昭６３．６．１７図面の簡単な説明を次のように補正する。明細書第１４頁第１行〜第６行の「第５図…特
性線図」の記載を「第５図はバタフライバルブの
ＯＰＥＮ側デユーテイー比と開度との関係を大気
中での開閉の場合との比較で示した特性線図、第
６図ａ〜ｃはバタフライバルブの開度変化と空気
供給路からの空気の流入との関係を示した概略説
明図」と補正します。補正昭６３．６．１７図面の簡単な説明を次のように補正する。明細書第１４頁第２行の「ａ〜ｃ」の記載を削
除します。Amendment June 17, 1981 The brief description of the drawing is amended as follows. The description in ``Figure 5...Characteristics diagram'' in lines 1 to 6 of page 14 of the specification is changed to ``Figure 5 shows the relationship between the OPEN side duty ratio and the opening degree of the butterfly valve when opening and closing in the atmosphere. The characteristic diagrams shown in comparison with the case and Figure 6 a to c are schematic explanatory diagrams showing the relationship between the change in the opening degree of the butterfly valve and the inflow of air from the air supply path.'' Amendment June 17, 1981 The brief description of the drawing is amended as follows. The descriptions of "a-c" on page 14, line 2 of the statement will be deleted.

Claims

[Scope of utility model registration request]

The butterfly valve is provided in a flow path and has left and right valve parts centered on a rotation axis, and an actuator for driving this butterfly valve, and the butterfly valve resists fluid flow from a fully closed position. The flow rate control device is configured to open the butterfly valve, and the fluid flow path is capable of supplying an amount of fluid to the flow path corresponding to a closing amount due to a closing torque acting on the butterfly valve when the butterfly valve is opened. A flow control device characterized in that a supply path is connected.