JP2008002427A - Intake flow control valve of internal combustion engine - Google Patents

Intake flow control valve of internal combustion engine Download PDF

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JP2008002427A
JP2008002427A JP2006174861A JP2006174861A JP2008002427A JP 2008002427 A JP2008002427 A JP 2008002427A JP 2006174861 A JP2006174861 A JP 2006174861A JP 2006174861 A JP2006174861 A JP 2006174861A JP 2008002427 A JP2008002427 A JP 2008002427A
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valve body
intake
valve
combustion engine
internal combustion
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JP4760568B2 (en
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Isao Otsu
功 大津
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

<P>PROBLEM TO BE SOLVED: To easily install a valve element 4 of an intake flow control valve on a valve stem 3 in an intake passage constituting body 1. <P>SOLUTION: An installation surface 7 to the valve stem on the base end side of the valve element 4 is formed at an angle with respect to a plate surface 4a on the tip side of the valve element 4 by drawing and bending a part of the plate surface 4a of the valve element 4, and constituted so that the axis L of a screw (a fastening means) 5 orthogonal to the installation surface 7 of the valve element 4 is oriented toward the opening end surface OE of the intake passage constituting body 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、内燃機関において、吸気流動（タンブル流、スワール流）を制御する吸気流動制御弁に関する。   The present invention relates to an intake air flow control valve that controls intake air flow (tumble flow, swirl flow) in an internal combustion engine.

内燃機関の吸気流動制御弁として、特許文献１に開示されているように、吸気通路内の通路壁近傍に吸気流れ方向と直交する方向に配置される弁軸に、平板状の弁体の基端部を取付け、前記弁体の先端部側の回動位置により吸気流動を制御するものがある。
特開２００３−２０６７６１号公報 As disclosed in Patent Document 1, as an intake flow control valve for an internal combustion engine, a flat plate-like valve body is mounted on a valve shaft disposed in the direction perpendicular to the intake flow direction in the vicinity of a passage wall in the intake passage. There is a type in which an end portion is attached and the intake air flow is controlled by the rotation position on the tip end side of the valve body.
JP 2003-206761 A

ところで、吸気流動制御弁の装着時は、吸気通路構成体に組付けられた弁軸に対し、弁体の基端部をねじにより取付けるが、このとき、吸気通路構成体の開口端面より工具（ドライバー）を差し入れて、ねじ止めできるとよい。
しかし、弁体の基端部側の弁軸への取付面が弁体の先端部側の板面と同一平面であると、開弁状態では、取付面が吸気流れ方向と水平になるので、ねじ止めが困難であり、弁軸を回転させて弁体を閉弁状態にしても、弁体の先端部が通路壁に当たったところで回動が規制されることから、ねじの軸線を開口端面に指向させるまでにはいかない。よって、開口端面から工具を差し入れてねじ止めすることはできなかった。 By the way, when the intake flow control valve is mounted, the base end portion of the valve body is attached to the valve shaft assembled to the intake passage structure with a screw. At this time, a tool ( A screwdriver can be inserted and screwed in.
However, if the mounting surface to the valve shaft on the base end side of the valve body is flush with the plate surface on the distal end side of the valve body, the mounting surface is horizontal with the intake flow direction in the valve open state. Screwing is difficult, and even if the valve body is closed by rotating the valve shaft, the rotation is restricted when the tip of the valve body hits the passage wall. It is not possible to make it point to. Therefore, it was not possible to insert a tool from the opening end face and screw it.

このため、吸気通路構成体の壁部に工具を差し入れるための孔を開けておき、工具によるねじ止め後に、この孔にシーリングキャップを打ち込んで塞いでいるのが実状であり、製造工数、コストの増加を招いているという問題点があった。
本発明は、このような実状に鑑み、弁軸への弁体の取付けを容易にした吸気流動制御弁を提供することを目的とする。 For this reason, it is the actual situation that a hole for inserting a tool is opened in the wall portion of the intake passage structure, and after sealing with a tool, a sealing cap is driven into the hole to close it. There has been a problem that it has increased.
The present invention has been made in view of such a situation, and an object of the present invention is to provide an intake flow control valve that facilitates attachment of a valve body to a valve shaft.

このため、本発明では、弁体の基端部側の弁軸への取付面を、弁体の先端部側の板面に対し、角度を持たせて形成し、弁軸に弁体を取付けて弁体を回動するときの回動範囲のうち、いずれかの回動位置で、弁体の取付面と直交する締結手段の軸線が、吸気通路構成体の開口端面を指向するように構成する。   Therefore, in the present invention, the attachment surface to the valve shaft on the base end side of the valve body is formed with an angle with respect to the plate surface on the distal end side of the valve body, and the valve body is attached to the valve shaft. The axis of the fastening means that is orthogonal to the mounting surface of the valve body is directed to the opening end surface of the intake passage structure at any one of the rotation ranges when the valve body is rotated. To do.

本発明によれば、弁体の基端部側の弁軸への取付面を、弁体の先端部側の板面に対し、角度を持たせて形成することで、吸気通路構成体の開口端面から工具を差し入れて、簡単に締結手段を締結可能となる。   According to the present invention, the attachment surface to the valve shaft on the proximal end side of the valve body is formed at an angle with respect to the plate surface on the distal end side of the valve body, thereby opening the intake passage structure body. The fastening means can be easily fastened by inserting a tool from the end face.

以下に本発明の実施の形態を図面に基づいて説明する。
先ず第１実施形態について説明する。
図１は本発明の第１実施形態を示す断面図（図２のＡ−Ａ矢視断面図）、図２は第１実施形態での要部斜視図である。
吸気通路構成体１は、内部に略矩形断面の吸気通路を構成するもので、図１で右側が吸気流れ方向上流側、左側が吸気流れ方向下流側である。本実施形態では、吸気通路構成体１は、吸気マニホールドの下流側端部に一体に形成され、シリンダヘッドの吸気ポートとの接続面が開口端面ＯＥをなしている。但し、吸気マニホールド及びシリンダヘッドの吸気ポートと別体で、これらの間に介装されるように形成され、両端が開口端面をなしているものであってもよい。 Embodiments of the present invention will be described below with reference to the drawings.
First, the first embodiment will be described.
FIG. 1 is a cross-sectional view (a cross-sectional view taken along the line AA in FIG. 2) showing a first embodiment of the present invention, and FIG. 2 is a perspective view of a main part in the first embodiment.
The intake passage constituting body 1 constitutes an intake passage having a substantially rectangular cross section therein, and in FIG. 1, the right side is the upstream side in the intake flow direction and the left side is the downstream side in the intake flow direction. In the present embodiment, the intake passage structure 1 is integrally formed at the downstream end portion of the intake manifold, and the connection surface with the intake port of the cylinder head forms an open end surface OE. However, it may be formed separately from the intake manifold and the intake port of the cylinder head so as to be interposed between them, and both ends may be open end faces.

吸気通路構成体１の内部には、矩形断面の底面側の通路壁に、吸気流動制御弁の開弁時の格納空間２を形成し、その格納空間２の吸気流れ方向上流側に、吸気流れ方向と直交する方向に、吸気流動制御弁の弁軸３を配置してある。尚、吸気流動制御弁（弁体）は、各気筒毎に、また各気筒で吸気通路が２つに分かれていて同様に制御する場合は、各気筒に２つずつ、設けられるが、弁軸３は共通であり、図示しないモータにより回動される。   A storage space 2 when the intake flow control valve is opened is formed in a passage wall on the bottom side of the rectangular cross section inside the intake passage structure 1, and the intake flow is upstream of the storage space 2 in the intake flow direction. The valve shaft 3 of the intake flow control valve is arranged in a direction orthogonal to the direction. The intake flow control valve (valve element) is provided for each cylinder, and when each cylinder has two intake passages and is controlled in the same manner, two intake flow valves are provided for each cylinder. 3 is common and is rotated by a motor (not shown).

吸気流動制御弁は、前記弁軸３に、平板状の弁体４の基端部を締結手段の代表例としてのねじ５により取付けてなり、弁体４の先端部が弁軸３に対し吸気流れ方向下流側に延在する開状態からの、弁体４の先端部側の回動位置により吸気流動（タンブル流又はスワール流）を制御する。尚、本実施形態は、タンブル制御弁の例であるが、スワール制御弁として用いる場合は、弁体４の一部に左右方向に偏らせて切欠きを形成する。但し、各気筒で吸気通路が２つに分かれている場合に、片方にのみ設けることで、スワール制御弁として用いることもできる。   In the intake flow control valve, a base end portion of a flat valve body 4 is attached to the valve shaft 3 with a screw 5 as a representative example of a fastening means, and a distal end portion of the valve body 4 is inhaled with respect to the valve shaft 3. The intake flow (tumble flow or swirl flow) is controlled by the rotational position of the valve body 4 on the tip side from the open state extending downstream in the flow direction. Although this embodiment is an example of a tumble control valve, when used as a swirl control valve, a notch is formed in a part of the valve body 4 in a lateral direction. However, when the intake passage is divided into two in each cylinder, it can be used as a swirl control valve by providing only one side.

ここで、弁軸３は、弁体４を取付ける所では、半円状の断面にして、平坦な弁体固定面６を形成し、その２箇所に、めねじ（図示せず）を形成してある。
弁体４は、平板状に形成され、弁体４の基端部側の弁軸への取付面７を、弁体４の板面４ａの一部を絞り加工することで、弁体４の先端部側の板面４ａに対し、角度を持たせて形成してある。 Here, the valve shaft 3 has a semicircular cross section at the place where the valve body 4 is attached, and a flat valve body fixing surface 6 is formed, and female screws (not shown) are formed at the two locations. It is.
The valve body 4 is formed in a flat plate shape, and a part of the plate surface 4a of the valve body 4 is squeezed on the attachment surface 7 to the valve shaft on the base end side of the valve body 4 so that the valve body 4 An angle is formed with respect to the plate surface 4a on the front end side.

具体的には、弁体４の板面の絞り加工により、弁体４の先端部側から基端部側に向かって延在し、かつ基端部側に向かって深さが深くなる傾斜溝８を２つ形成し、これらの溝８の基端部側の端面を前記取付面７としている。この取付面７には、前記めねじに対応するねじ５の挿通孔（図示せず）を形成してある。
そして、弁体４の取付面７を弁軸３よりも吸気流れ方向下流側に位置させて、吸気流れ方向下流側からねじ止めするようにする。 Specifically, an inclined groove that extends from the distal end side of the valve body 4 toward the proximal end side and deepens toward the proximal end side by drawing the plate surface of the valve body 4. Two end surfaces 8 are formed, and the end surfaces on the base end side of these grooves 8 are used as the mounting surfaces 7. The mounting surface 7 is formed with an insertion hole (not shown) for the screw 5 corresponding to the female screw.
Then, the attachment surface 7 of the valve body 4 is positioned downstream of the valve shaft 3 in the intake flow direction and is screwed from the downstream side of the intake flow direction.

このとき、弁体４の取付面７と直交するねじ５の軸線Ｌが、吸気通路構成体１の吸気流れ方向下流側の開口端面ＯＥを指向するようにする。
以上のように、吸気通路構成体１内の通路壁近傍に吸気流れ方向と直交する方向に配置される弁軸３に、平板状の弁体４の基端部をねじ５により取付けてなり、前記弁体４が前記弁軸３に対し吸気流れ方向下流側に延在する開状態からの前記弁体４の回動位置により吸気流動を制御する内燃機関の吸気流動制御弁において、前記弁体４の基端部側の前記弁軸への取付面７を、前記弁体４の板面４ａの一部を絞り加工することで、前記弁体４の先端部側の板面４ａに対し、角度を持たせて（平行にならないように）形成し、前記弁体４の取付面７を前記弁軸３よりも吸気流れ方向下流側に位置させて、吸気流れ方向下流側からねじ止めするようにし、前記弁体４の取付面７と直交するねじ５の軸線Ｌが、吸気通路構成体１の吸気流れ方向下流側の開口端面ＯＥを指向するように構成する。 At this time, the axis L of the screw 5 orthogonal to the mounting surface 7 of the valve body 4 is directed to the opening end surface OE on the downstream side in the intake flow direction of the intake passage constituting body 1.
As described above, the base end portion of the flat valve body 4 is attached to the valve shaft 3 disposed in the direction orthogonal to the intake flow direction in the vicinity of the passage wall in the intake passage structure 1 with the screw 5. In the intake flow control valve of an internal combustion engine that controls the intake flow by the rotational position of the valve body 4 from the open state in which the valve body 4 extends downstream in the intake flow direction with respect to the valve shaft 3, the valve body 4 by drawing a part of the plate surface 4a of the valve body 4 to the valve surface 4a on the distal end side of the valve body 4, It is formed with an angle (so as not to be parallel), and the mounting surface 7 of the valve body 4 is positioned downstream of the valve shaft 3 in the intake flow direction and is screwed from the downstream side of the intake flow direction. In addition, the axis L of the screw 5 orthogonal to the mounting surface 7 of the valve body 4 is downstream of the intake passage constituting body 1 in the intake flow direction. The opening end surface OE configured to oriented.

本実施形態によれば、弁体４の基端部側の弁軸への取付面７を、弁体４の先端部側の板面４ａに対し、角度を持たせて形成し、弁軸３に弁体４を取付けて弁体４を回動するときの回動範囲のうち、いずれかの回動位置で、弁体４の取付面と直交するねじ５の軸線Ｌが、吸気通路構成体１の開口端面ＯＥを指向するように構成したことにより、吸気通路構成体１の開口端面ＯＥから工具を差し入れて、簡単にねじ止め可能となる。   According to the present embodiment, the attachment surface 7 to the valve shaft on the proximal end side of the valve body 4 is formed with an angle with respect to the plate surface 4a on the distal end side of the valve body 4, and the valve shaft 3 The axis L of the screw 5 that is orthogonal to the mounting surface of the valve body 4 at any rotation position in the rotation range when the valve body 4 is attached to the valve body 4 and rotated is the intake passage structure. Since the first opening end surface OE is configured to be directed, a tool can be inserted from the opening end surface OE of the intake passage constituting body 1 and can be easily screwed.

具体的には、図３に示すように、弁軸３及び弁体４を開弁状態の位置にして、吸気通路構成体１の吸気流れ方向下流側の開口端面ＯＥより、弁体４の傾斜溝８に沿って、工具（ドライバー）ＤＶを差し入れて、ねじ５を締め付けることにより、弁体４を簡単に組み付け可能となる。
また、本実施形態によれば、弁体４の取付面７は、弁体４の板面４ａの一部を絞り加工することで、弁体４の先端部側の板面４ａに対し、角度を持たせて形成したことにより、絞り加工の付加によって弁体４の強度向上を図ることができ、弁体４の更なる薄肉化、軽量化も可能となる。 Specifically, as shown in FIG. 3, the valve body 4 is inclined from the opening end surface OE on the downstream side in the intake air flow direction of the intake passage constituting body 1 with the valve shaft 3 and the valve body 4 in the open state. By inserting a tool (driver) DV along the groove 8 and tightening the screw 5, the valve body 4 can be easily assembled.
Further, according to the present embodiment, the mounting surface 7 of the valve body 4 is angled with respect to the plate surface 4a on the distal end side of the valve body 4 by drawing a part of the plate surface 4a of the valve body 4. By forming by providing a drawing process, the strength of the valve body 4 can be improved by adding a drawing process, and the valve body 4 can be further reduced in thickness and weight.

また、本実施形態によれば、弁体４の板面４ａに、前記絞り加工により、弁体４の先端部側から基端部側に向かって延在する溝８を形成し、この溝８の基端部側の端面を前記取付面７とすることにより、吸気流れの整流効果をも奏するようになる。
また、本実施形態によれば、前記溝８は、基端部側に向かって深さが深くなる傾斜溝であるので、凹みを最小限に抑えることができると共に、工具を的確に案内できるようになる。 According to the present embodiment, the groove 8 extending from the distal end side to the proximal end side of the valve body 4 is formed on the plate surface 4a of the valve body 4 by the drawing process. By using the mounting surface 7 as the end face on the base end side, the intake flow rectifying effect can be obtained.
Further, according to the present embodiment, the groove 8 is an inclined groove whose depth becomes deeper toward the base end side, so that the dent can be minimized and the tool can be guided accurately. become.

また、本実施形態によれば、弁体４は、開弁状態で、弁軸３に対し吸気流れ方向下流側に延在しており、前記弁体４の取付面７と直交するねじ５の軸線Ｌを吸気通路構成体１の吸気流れ方向下流側の開口端面を指向させたことにより、吸気流れ方向下流側に開口端面を持つ場合に好適となる。
従って、吸気通路構成体１が、吸気マニホールドの下流側端部に一体に形成され、シリンダヘッドの吸気ポートとの接続面が開口端面をなしている場合に、好適となる。吸気マニホールドと一体化することで、部品点数削減等を図ることができる。 Further, according to the present embodiment, the valve body 4 extends in the intake flow direction downstream with respect to the valve shaft 3 in the valve open state, and the screw 5 orthogonal to the mounting surface 7 of the valve body 4 Since the axis L is directed to the opening end face on the downstream side in the intake flow direction of the intake passage constituting body 1, it is suitable when the opening end face is on the downstream side in the intake flow direction.
Therefore, it is suitable when the intake passage structure 1 is integrally formed at the downstream end portion of the intake manifold and the connection surface with the intake port of the cylinder head forms an open end surface. By integrating with the intake manifold, the number of parts can be reduced.

また、本実施形態によれば、弁軸３は、吸気通路内の通路壁近傍に配置されることにより、開弁状態で通路抵抗となるのを極力防止でき、かつ開弁状態での格納が可能となる。
次に第２実施形態について説明する。
図４は本発明の第２実施形態を示す断面図（図５のＡ−Ａ矢視断面図）、図５は第２実施形態での要部斜視図である。 In addition, according to the present embodiment, the valve shaft 3 is disposed in the vicinity of the passage wall in the intake passage, so that passage resistance can be prevented as much as possible in the valve open state, and storage in the valve open state can be prevented. It becomes possible.
Next, a second embodiment will be described.
FIG. 4 is a cross-sectional view (a cross-sectional view taken along the line AA in FIG. 5) showing a second embodiment of the present invention, and FIG. 5 is a perspective view of a main part in the second embodiment.

第２実施形態での吸気流動制御弁は、第１実施形態と同様、吸気通路構成体１内の通路壁近傍に吸気流れ方向と直交する方向に配置される弁軸３に、平板状の弁体４の基端部をねじ５により取付けてなり、前記弁体４が前記弁軸３に対し吸気流れ方向下流側に延在する開状態からの前記弁体４の回動位置により吸気流動を制御するが、吸気通路構成体１は、吸気マニホールド及びシリンダヘッドの吸気ポートと別体で、これらの間に介装されるように形成され、両端が開口端面ＯＥをなしている。但し、シリンダヘッドの吸気ポートの上流側端部に一体に形成され、吸気マニホールドとの接続面のみが開口端面ＯＥをなしているものであってもよい。   As in the first embodiment, the intake flow control valve in the second embodiment is a flat valve on the valve shaft 3 arranged in the direction perpendicular to the intake flow direction in the vicinity of the passage wall in the intake passage structure 1. The base end portion of the body 4 is attached by a screw 5, and intake flow is caused by the rotational position of the valve body 4 from the open state in which the valve body 4 extends downstream in the intake flow direction with respect to the valve shaft 3. Although controlled, the intake passage structure 1 is formed separately from the intake manifold and the intake port of the cylinder head, and is formed so as to be interposed between them, and both ends form an open end surface OE. However, it may be integrally formed at the upstream end portion of the intake port of the cylinder head, and only the connection surface with the intake manifold may form the open end surface OE.

ここで、弁軸３は、弁体４を取付ける所では、半円状の断面にして、平坦な弁体固定面６を形成し、その２箇所に、めねじ（図示せず）を形成してある。
弁体４は、平板状に形成され、弁体４の基端部側の弁軸への取付面１０を、弁体４の先端部側の板面４ａに対し、通路壁側へ屈曲させることで、角度を持たせて形成してある。
そして、弁体４の取付面１０を弁軸３よりも吸気流れ方向上流側に位置させて、吸気流れ方向上流側からねじ止めするようにする。 Here, the valve shaft 3 has a semicircular cross section at the place where the valve body 4 is attached, and a flat valve body fixing surface 6 is formed, and female screws (not shown) are formed at the two locations. It is.
The valve body 4 is formed in a flat plate shape, and the attachment surface 10 to the valve shaft on the proximal end side of the valve body 4 is bent toward the passage wall side with respect to the plate surface 4 a on the distal end side of the valve body 4. And formed with an angle.
Then, the attachment surface 10 of the valve body 4 is positioned upstream of the valve shaft 3 in the intake flow direction and is screwed from the upstream side of the intake flow direction.

このとき、弁体４の取付面１０と直交するねじ５の軸線Ｌが、吸気通路構成体１の吸気流れ方向上流側の開口端面ＯＥを指向するようにする。
以上のように、弁体４の基端部側の弁軸への取付面１０を、弁体４の先端部側の板面４ａに対し、通路壁側へ屈曲させることで、角度をもたせて形成し、前記弁体４の取付面１０を前記弁軸３よりも吸気流れ方向上流側に位置させて、吸気流れ方向上流側からねじ止めするようにし、前記弁体４の取付面１０と直交するねじ５の軸線Ｌが、吸気通路構成体１の吸気流れ方向上流側の開口端面ＯＥを指向するように構成する。 At this time, the axis L of the screw 5 orthogonal to the mounting surface 10 of the valve body 4 is directed to the opening end surface OE on the upstream side in the intake flow direction of the intake passage constituting body 1.
As described above, the attachment surface 10 to the valve shaft on the proximal end side of the valve body 4 is bent toward the passage wall side with respect to the plate surface 4a on the distal end side of the valve body 4, thereby providing an angle. The mounting surface 10 of the valve body 4 is positioned upstream of the valve shaft 3 in the intake flow direction, and is screwed from the upstream side of the intake flow direction, and is orthogonal to the mounting surface 10 of the valve body 4 The axis L of the screw 5 is directed to the opening end surface OE on the upstream side in the intake flow direction of the intake passage structure 1.

本実施形態によれば、弁体４の基端部側の弁軸への取付面７を、弁体４の先端部側の板面４ａに対し、角度を持たせて形成し、弁軸３に弁体４を取付けて弁体４を回動するときの回動範囲のうち、いずれかの回動位置で、弁体４の取付面と直交するねじ５の軸線Ｌが、吸気通路構成体１の開口端面ＯＥを指向するように構成したことにより、吸気通路構成体１の開口端面ＯＥから工具を差し入れて、簡単にねじ止め可能となる。   According to the present embodiment, the attachment surface 7 to the valve shaft on the proximal end side of the valve body 4 is formed with an angle with respect to the plate surface 4a on the distal end side of the valve body 4, and the valve shaft 3 The axis L of the screw 5 that is orthogonal to the mounting surface of the valve body 4 at any rotation position in the rotation range when the valve body 4 is attached to the valve body 4 and rotated is the intake passage structure. Since the first opening end surface OE is configured to be directed, a tool can be inserted from the opening end surface OE of the intake passage constituting body 1 and can be easily screwed.

具体的には、図６に示すように、弁軸３及び弁体４を開弁状態の位置にして、吸気通路構成体１の吸気流れ方向上流側の開口端面ＯＥより工具（ドライバー）ＤＶを差し入れて、ねじ５を締め付けることにより、弁体４を簡単に組み付け可能となる。
特に本実施形態によれば、弁体４の取付面１０は、弁体４の先端部側の板面４ａに対し、屈曲させることで、角度を持たせて形成したことにより、簡単な曲げ加工の追加のみで実施可能となる。 Specifically, as shown in FIG. 6, with the valve shaft 3 and the valve body 4 in the open state, the tool (driver) DV is inserted from the opening end surface OE upstream of the intake passage constituting body 1 in the intake flow direction. The valve body 4 can be easily assembled by inserting and tightening the screw 5.
In particular, according to the present embodiment, the mounting surface 10 of the valve body 4 is formed with an angle by bending the plate surface 4a on the distal end side of the valve body 4, so that a simple bending process is performed. It can be implemented only by adding.

また、本実施形態によれば、弁体４は、開弁状態で、弁軸３に対し吸気流れ方向下流側に延在しており、前記弁体４の取付面１０と直交するねじ５の軸線Ｌを吸気通路構成体１の吸気流れ方向上流側の開口端面を指向させたことにより、吸気流れ方向上流側に開口端面を持つ場合に好適となる。
従って、吸気通路構成体１が、吸気マニホールド及びシリンダヘッドの吸気ポートと別体で、これらの間に介装されるように形成され、両端が開口端面をなしている場合に、好適となる。吸気マニホールドと一体化するよりも別体とした方が取り扱いが容易な場合があるからである。 Further, according to the present embodiment, the valve body 4 extends in the intake flow direction downstream with respect to the valve shaft 3 in the valve open state, and the screw 5 orthogonal to the mounting surface 10 of the valve body 4 Since the axis L is directed to the opening end face on the upstream side in the intake flow direction of the intake passage constituting body 1, it is suitable when the opening end face is on the upstream side in the intake flow direction.
Therefore, it is suitable when the intake passage constituting body 1 is formed separately from the intake manifold and the intake port of the cylinder head so as to be interposed therebetween, and both ends are open end faces. This is because it may be easier to handle as a separate body than to be integrated with the intake manifold.

尚、本発明では、ねじ５の軸線Ｌが吸気通路構成体１の開口端面を指向するように構成しているが、これは、その開口端面から工具（ドライバー）を差し入れて、ねじ５を締め付け可能であれば、工具は多少真っ直ぐでなくても良いので、ねじを締め付け可能な範囲で、多少のずれを含んでいてもよい。
また、締結手段としては、上記実施形態にて示したドライバーを用いて締結するねじの他、各種工具を用いて締結するリベットや、溶接棒を用いて締結する溶接であってもよく、これらによる締結においても作業が容易となる。 In the present invention, the axis L of the screw 5 is configured so as to be directed to the opening end surface of the intake passage structure 1, but this is done by inserting a tool (driver) from the opening end surface and tightening the screw 5 If possible, the tool does not have to be somewhat straight, and may include some deviation as long as the screw can be tightened.
Moreover, as a fastening means, the rivet fastened using various tools other than the screw fastened using the driver shown in the said embodiment, and the welding fastened using a welding rod may be sufficient. Even in fastening, the work becomes easy.

本発明の第１実施形態を示す断面図Sectional drawing which shows 1st Embodiment of this invention 第１実施形態での要部斜視図Main part perspective view in 1st Embodiment 第１実施形態での工具使用時の断面図Sectional view when using the tool in the first embodiment 本発明の第２実施形態を示す断面図Sectional drawing which shows 2nd Embodiment of this invention 第２実施形態での要部斜視図Main part perspective view in 2nd Embodiment 第２実施形態での工具使用時の断面図Sectional view when using a tool in the second embodiment

符号の説明Explanation of symbols

１ 吸気通路構成体
２ 格納空間
３ 弁軸
４ 弁体
４ａ 板面
５ ねじ
６ 弁軸の弁体固定面
７ 弁体の弁軸への取付面
８ 傾斜溝
１０ 弁体の弁軸への取付面（第２実施形態） DESCRIPTION OF SYMBOLS 1 Intake passage structure 2 Storage space 3 Valve shaft 4 Valve body 4a Plate surface 5 Screw 6 Valve body fixing surface of valve shaft 7 Mounting surface of valve body to valve shaft 8 Inclined groove 10 Mounting surface of valve body to valve shaft (Second Embodiment)

Claims (14)

吸気通路内に吸気流れ方向と直交する方向に配置される弁軸に、平板状の弁体の基端部を締結手段により取付けてなり、前記弁体の先端部側の回動位置により吸気流動を制御する内燃機関の吸気流動制御弁において、
前記弁体の基端部側の前記弁軸への取付面を、前記弁体の先端部側の板面に対し、角度を持たせて形成し、
前記弁軸に前記弁体を取付けて前記弁体を回動するときの回動範囲のうち、いずれかの回動位置で、前記弁体の取付面と直交する締結手段の軸線が、前記吸気通路を構成する吸気通路構成体の開口端面を指向するように構成したことを特徴とする内燃機関の吸気流動制御弁。 A base end portion of a flat valve body is attached by a fastening means to a valve shaft arranged in a direction orthogonal to the intake flow direction in the intake passage, and the intake flow is caused by the rotational position on the distal end side of the valve body. In an intake air flow control valve of an internal combustion engine for controlling
An attachment surface to the valve shaft on the proximal end side of the valve body is formed with an angle with respect to a plate surface on the distal end side of the valve body,
The axis of the fastening means that is orthogonal to the mounting surface of the valve body at any rotation position in the rotation range when the valve body is attached to the valve shaft and the valve body rotates. An intake flow control valve for an internal combustion engine, wherein the intake flow control valve is configured to be directed toward an opening end surface of an intake passage structure constituting the passage. 前記弁体の取付面は、前記弁体の板面の一部を絞り加工することで、前記弁体の先端部側の板面に対し、角度を持たせて形成したことを特徴とする請求項１記載の内燃機関の吸気流動制御弁。   The attachment surface of the valve body is formed by drawing a part of a plate surface of the valve body so as to have an angle with respect to the plate surface on the distal end side of the valve body. Item 6. An intake flow control valve for an internal combustion engine according to Item 1. 前記弁体の板面に、前記絞り加工により、前記弁体の先端部側から基端部側に向かって延在する溝を形成し、この溝の基端部側の端面を前記取付面とすることを特徴とする請求項２記載の内燃機関の吸気流動制御弁。   A groove extending from the distal end side to the proximal end side of the valve body is formed on the plate surface of the valve body by the drawing process, and an end surface on the proximal end side of the groove is defined as the mounting surface. The intake flow control valve for an internal combustion engine according to claim 2, wherein: 前記溝は、基端部側に向かって深さが深くなる傾斜溝であることを特徴とする請求項３記載の内燃機関の吸気流動制御弁。   4. The intake flow control valve for an internal combustion engine according to claim 3, wherein the groove is an inclined groove whose depth becomes deeper toward the base end side. 前記弁体の取付面は、前記弁体の先端部側の板面に対し、屈曲させることで、角度を持たせて形成したことを特徴とする請求項１記載の内燃機関の吸気流動制御弁。   2. An intake flow control valve for an internal combustion engine according to claim 1, wherein the mounting surface of the valve body is formed with an angle by being bent with respect to a plate surface on the tip side of the valve body. . 前記弁体は、開弁状態で、前記弁軸に対し吸気流れ方向下流側に延在しており、
前記弁体の取付面と直交する締結手段の軸線を吸気通路構成体の吸気流れ方向下流側の開口端面を指向させたことを特徴とする請求項１〜請求項５のいずれか１つに記載の内燃機関の吸気流動制御弁。 The valve body is in a valve open state and extends downstream in the intake flow direction with respect to the valve shaft,
The axis of the fastening means orthogonal to the mounting surface of the valve body is directed to the opening end surface of the intake passage structure downstream in the intake flow direction. Intake flow control valve for internal combustion engine. 前記弁体は、開弁状態で、前記弁軸に対し吸気流れ方向下流側に延在しており、
前記弁体の取付面と直交する締結手段の軸線を吸気通路構成体の吸気流れ方向上流側の開口端面を指向させたことを特徴とする請求項１〜請求項５のいずれか１つに記載の内燃機関の吸気流動制御弁。 The valve body is in a valve open state and extends downstream in the intake flow direction with respect to the valve shaft,
The axis of the fastening means orthogonal to the mounting surface of the valve body is directed to the opening end surface on the upstream side in the intake flow direction of the intake passage constituting body. Intake flow control valve for internal combustion engine. 前記吸気通路構成体は、吸気マニホールドの下流側端部に一体に形成され、シリンダヘッドの吸気ポートとの接続面が開口端面をなしていることを特徴とする請求項１〜請求項６のいずれか１つに記載の内燃機関の吸気流動制御弁。   7. The intake passage structure according to claim 1, wherein the intake passage structure is formed integrally with a downstream end portion of the intake manifold, and a connection surface with an intake port of the cylinder head forms an open end surface. An intake air flow control valve for an internal combustion engine according to claim 1. 前記吸気通路構成体は、吸気マニホールド及びシリンダヘッドの吸気ポートと別体で、これらの間に介装されるように形成され、両端が開口端面をなしていることを特徴とする請求項１〜請求項７のいずれか１つに記載の内燃機関の吸気流動制御弁。   The said intake passage structure is formed separately so as to be interposed between the intake manifold and the intake port of the cylinder head, and both ends form open end faces. The intake flow control valve for an internal combustion engine according to claim 7. 前記弁軸は、吸気通路内の通路壁近傍に配置されることを特徴とする請求項１〜請求項９のいずれか１つに記載の内燃機関の吸気流動制御弁。   The intake flow control valve for an internal combustion engine according to any one of claims 1 to 9, wherein the valve shaft is disposed in the vicinity of a passage wall in the intake passage. 吸気通路内の通路壁近傍に吸気流れ方向と直交する方向に配置される弁軸に、平板状の弁体の基端部を締結手段により取付けてなり、前記弁体が前記弁軸に対し吸気流れ方向下流側に延在する開状態からの前記弁体の回動位置により吸気流動を制御する内燃機関の吸気流動制御弁において、
前記弁体の基端部側の前記弁軸への取付面を、前記弁体の板面の一部を絞り加工することで、前記弁体の先端部側の板面に対し、角度を持たせて形成し、
前記弁体の取付面を前記弁軸よりも吸気流れ方向下流側に位置させて、吸気流れ方向下流側から締結手段を締結するようにし、
前記弁体の取付面と直交する締結手段の軸線が、前記吸気通路を構成する吸気通路構成体の吸気流れ方向下流側の開口端面を指向するように構成したことを特徴とする内燃機関の吸気流動制御弁。 A base end portion of a flat plate-like valve body is attached to a valve shaft disposed in the direction orthogonal to the intake flow direction in the vicinity of the passage wall in the intake passage by a fastening means, and the valve body takes air into the valve shaft. In an intake air flow control valve of an internal combustion engine that controls the intake air flow according to the rotational position of the valve body from the open state extending downstream in the flow direction,
An attachment surface to the valve shaft on the base end side of the valve body has an angle with respect to the plate surface on the distal end side of the valve body by drawing a part of the plate surface of the valve body. Let it form,
The mounting surface of the valve body is positioned on the downstream side in the intake flow direction from the valve shaft, and the fastening means is fastened from the downstream side in the intake flow direction,
The intake air of the internal combustion engine, wherein the axis of the fastening means orthogonal to the mounting surface of the valve body is directed to the opening end surface on the downstream side in the intake flow direction of the intake passage constituting body constituting the intake passage Flow control valve. 前記弁体の板面に、前記絞り加工により、前記弁体の先端部側から基端部側に向かって延在する溝を形成し、この溝の基端部側の端面を前記取付面とすることを特徴とする請求項１１記載の内燃機関の吸気流動制御弁。   A groove extending from the distal end side to the proximal end side of the valve body is formed on the plate surface of the valve body by the drawing process, and an end surface on the proximal end side of the groove is defined as the mounting surface. The intake flow control valve for an internal combustion engine according to claim 11, wherein: 前記溝は、基端部側に向かって深さが深くなる傾斜溝であることを特徴とする請求項１２記載の内燃機関の吸気流動制御弁。   The intake flow control valve for an internal combustion engine according to claim 12, wherein the groove is an inclined groove having a depth that increases toward the base end side. 吸気通路内の通路壁近傍に吸気流れ方向と直交する方向に配置される弁軸に、平板状の弁体の基端部を締結手段により取付けてなり、前記弁体が前記弁軸に対し吸気流れ方向下流側に延在する開状態からの前記弁体の回動位置により吸気流動を制御する内燃機関の吸気流動制御弁において、
前記弁体の基端部側の前記弁軸への取付面を、前記弁体の先端部側の板面に対し、通路壁側へ屈曲させることで、角度をもたせて形成し、
前記弁体の取付面を前記弁軸よりも吸気流れ方向上流側に位置させて、吸気流れ方向上流側から締結手段を締結するようにし、
前記弁体の取付面と直交する締結手段の軸線が、前記吸気通路を構成する吸気通路構成体の吸気流れ方向上流側の開口端面を指向するように構成したことを特徴とする内燃機関の吸気流動制御弁。 A base end portion of a flat plate-like valve body is attached to a valve shaft disposed in the direction orthogonal to the intake flow direction in the vicinity of the passage wall in the intake passage by a fastening means, and the valve body takes air into the valve shaft. In an intake air flow control valve of an internal combustion engine that controls the intake air flow according to the rotational position of the valve body from the open state extending downstream in the flow direction,
By attaching the mounting surface to the valve shaft on the base end side of the valve body toward the passage wall side with respect to the plate surface on the distal end side of the valve body, an angle is formed,
The mounting surface of the valve body is positioned upstream of the valve shaft in the intake flow direction, and the fastening means is fastened from the upstream side of the intake flow direction,
The intake air of the internal combustion engine, wherein the axis of the fastening means orthogonal to the mounting surface of the valve body is directed to the opening end surface on the upstream side in the intake flow direction of the intake passage structure constituting the intake passage Flow control valve.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010163997A (en) * 2009-01-16 2010-07-29 Honda Motor Co Ltd Intake device for internal combustion engine
KR20110081468A (en) * 2010-01-08 2011-07-14 현대중공업 주식회사 Scavenging air valve apparatus using thread fitting for 2-strock engine

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JPS5685025U (en) * 1979-12-04 1981-07-08
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JP2005226579A (en) * 2004-02-13 2005-08-25 Mazda Motor Corp Exhaust gas recirculation device for engine

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JP2005226579A (en) * 2004-02-13 2005-08-25 Mazda Motor Corp Exhaust gas recirculation device for engine

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Publication number Priority date Publication date Assignee Title
JP2010163997A (en) * 2009-01-16 2010-07-29 Honda Motor Co Ltd Intake device for internal combustion engine
KR20110081468A (en) * 2010-01-08 2011-07-14 현대중공업 주식회사 Scavenging air valve apparatus using thread fitting for 2-strock engine
KR101581048B1 (en) 2010-01-08 2015-12-29 현대중공업 주식회사 Scavenging Air Valve Apparatus Using Thread Fitting for 2-strock Engine

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