JP5845650B2 - Wastegate valve - Google Patents

Wastegate valve Download PDF

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JP5845650B2
JP5845650B2 JP2011138073A JP2011138073A JP5845650B2 JP 5845650 B2 JP5845650 B2 JP 5845650B2 JP 2011138073 A JP2011138073 A JP 2011138073A JP 2011138073 A JP2011138073 A JP 2011138073A JP 5845650 B2 JP5845650 B2 JP 5845650B2
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valve body
mounting plate
valve
support plate
exhaust gas
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JP2013002431A (en
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加藤　毅彦
毅彦 加藤
市川　清道
清道 市川
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IHI Corp
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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
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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Description

本発明は、排気ガス流路に設けられるウエストゲートバルブに関し、特に取付板に取り付けた弁体の回転を規制するようにしたウエストゲートバルブに関するものである。   The present invention relates to a wastegate valve provided in an exhaust gas passage, and more particularly, to a wastegate valve that regulates rotation of a valve body attached to a mounting plate.

従来からエンジンの性能を向上して低燃費化を図るために排気タービン過給機が用いられている。   Conventionally, exhaust turbine superchargers have been used to improve engine performance and reduce fuel consumption.

排気タービン過給機付きエンジンとしては、例えば、特許文献１に記載のものがある。特許文献１の排気タービン過給機付きエンジンは、エンジンの排気ガスを、排気タービン過給機のタービンハウジングに備えられるタービンインペラにガス入口部から導入してタービンインペラを回転し、その後の排気ガスは排気ガス出口部から排気ガス流路に排出している。又、エンジンに供給される圧縮空気の過給圧を制御するために、前記排気ガス入口部と排気ガス出口部との間にはバイパス流路が設けられ、該バイパス流路にウエストゲートバルブを設け、過給圧が設定値を越えたときに、ウエストゲートバルブを開いて、前記排気ガスの一部を、タービンインペラをバイパスさせて前記排気ガス流路に排出するようにしている。   As an engine with an exhaust turbine supercharger, there exists a thing of patent document 1, for example. The engine with an exhaust turbine supercharger of Patent Document 1 introduces engine exhaust gas into a turbine impeller provided in a turbine housing of the exhaust turbine supercharger from a gas inlet, rotates the turbine impeller, and then exhausts the exhaust gas. Is discharged from the exhaust gas outlet to the exhaust gas flow path. In order to control the supercharging pressure of the compressed air supplied to the engine, a bypass passage is provided between the exhaust gas inlet and the exhaust gas outlet, and a wastegate valve is provided in the bypass passage. When the supercharging pressure exceeds a set value, the wastegate valve is opened, and a part of the exhaust gas is discharged to the exhaust gas flow path by bypassing the turbine impeller.

特開２００３−２５４０５１号公報JP 2003-240551 A

前記ウエストゲートバルブは、取付板と、該取付板に取り付けて支持された弁体とを有している。弁体のシール面に対する背面には、前記取付板を貫通する貫通軸が形成されていると共に、該貫通軸の軸心には取付ピンが形成されており、前記弁体の貫通軸を取付板に貫通させ、更に、前記取付ピンに座金を嵌合させ、座金から突出した前記取付ピンの先端をカシメ加工することで、弁体を取付板に固定している。従って、前記弁体は、前記座金との間で前記取付板を挾持するようにして取付板に取り付けられる。   The wastegate valve includes a mounting plate and a valve body that is mounted and supported on the mounting plate. A through shaft that penetrates the mounting plate is formed on the back surface of the sealing body of the valve body, and a mounting pin is formed at the axis of the through shaft, and the through shaft of the valve body is attached to the mounting plate. Further, the valve body is fixed to the mounting plate by fitting a washer to the mounting pin and crimping the tip of the mounting pin protruding from the washer. Therefore, the valve body is attached to the attachment plate so as to hold the attachment plate with the washer.

前記取付板は、前記バイパス流路を貫通する回動軸に対して溶接により固定している。そして、前記回動軸は外部に設けたアクチュエータによって回動されるようになっており、ウエストゲートバルブの弁体はアクチュエータの駆動により回動軸を介して開閉される。   The mounting plate is fixed by welding to a rotation shaft that penetrates the bypass flow path. The rotating shaft is rotated by an externally provided actuator, and the valve body of the wastegate valve is opened and closed through the rotating shaft by driving of the actuator.

ところで、前記ウエストゲートバルブの弁体は、取付板を貫通する貫通軸に備えた取付ピンを座金に貫通させてカシメ加工することで取付板に取り付けられているため、弁体と取付板と座金の相互間には隙間が存在しており、更に、前記貫通軸及び取付ピンの回りにも隙間が存在しており、このために、弁体は排気ガスの作用を受けて取付板に対し回転する問題がある。   By the way, the valve body of the waste gate valve is attached to the mounting plate by passing the mounting pin provided on the through shaft penetrating the mounting plate through the washer and caulking, so that the valve body, the mounting plate and the washer There is also a gap between them, and there is also a gap around the through shaft and the mounting pin. For this reason, the valve body receives the action of exhaust gas and rotates with respect to the mounting plate. There is a problem to do.

弁体が回転すると、ウエストゲートバルブの取付姿勢により、弁体の重心のずれから前記貫通軸及び取付ピンに偏荷重が作用して片当たりによる偏摩耗が生じ、この偏摩耗は経時的に進行するため、弁体と取付板との間におけるガタが大きくなり、弁体の密閉性が低下する可能性がある。又、弁体と弁座面の回転方向の摺動により摩耗が生じ、アクチュエータによる過給圧コントロールに不具合を生じる可能性がある。   When the valve body rotates, due to the mounting posture of the wastegate valve, an uneven load is applied to the penetrating shaft and mounting pin due to the deviation of the center of gravity of the valve body, resulting in uneven wear due to contact, and this uneven wear progresses over time. Therefore, the backlash between the valve body and the mounting plate increases, and the sealing performance of the valve body may be reduced. Further, the sliding of the valve body and the valve seat surface in the rotational direction causes wear, which may cause a problem in supercharging pressure control by the actuator.

本発明は、上記従来の問題に鑑みてなしたもので、弁体の回転を規制するようにしたウエストゲートバルブを提供しようとするものである。   The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a wastegate valve that regulates the rotation of a valve body.

本発明は、支持板を含み回動軸に固定される取付板に、取付ピンと座金を介して弁体が取り付けられているウエストゲートバルブであって、
前記取付板と弁体との間に設けられ、前記取付板に対し前記弁体が回転しないように規制する回転規制手段と、
前記支持板における平坦部に対して前記弁体の軸中心を挟んで反対側の位置における前記支持板の外周に設けられた押え凸部とを備え、
前記回転規制手段が、前記取付板と弁体の一方に備えた１つの被係止部と、該１つの被係止部を挟んで回転を規制するよう前記取付板と弁体の他方に備えた２つの係止部とからなり、前記２つの係止部の一方は、前記平坦部に対して前記弁体の軸中心を挟んで反対側に位置していることを特徴とするウエストゲートバルブ、に係るものである。 The present invention is a wastegate valve in which a valve body is attached to a mounting plate that includes a support plate and is fixed to a rotating shaft via a mounting pin and a washer,
A rotation restricting means provided between the mounting plate and the valve body for restricting the valve body from rotating relative to the mounting plate;
A presser convex portion provided on the outer periphery of the support plate at a position opposite to the flat portion of the support plate across the axial center of the valve body ,
The rotation restricting means includes one locked portion provided on one of the mounting plate and the valve body, and the other of the mounting plate and the valve body so as to restrict the rotation with the one locked portion interposed therebetween. A wastegate valve, wherein one of the two locking portions is located on the opposite side of the flat portion with the axial center of the valve body interposed therebetween. , Related to

本発明によれば、取付板に対して弁体が回転しないウエストゲートバルブを提供することができる。   According to the present invention, it is possible to provide a wastegate valve in which the valve body does not rotate with respect to the mounting plate.

（ａ）はエンジンに備えられる本発明のウエストゲートバルブを有する排気タービン過給機の一例を示す側面図、（ｂ）は（ａ）を右側から見た背面図である。(A) is the side view which shows an example of the exhaust turbine supercharger which has the wastegate valve of this invention with which an engine is equipped, (b) is the rear view which looked at (a) from the right side. （ａ）は図１（ａ）を左側から見た正面図、（ｂ）は（ａ）をＩＩＢ−ＩＩＢ方向から見た断面図である。(A) is the front view which looked at Fig.1 (a) from the left side, (b) is sectional drawing which looked at (a) from the IIB-IIB direction. 本発明のウエストゲートバルブの第１の参考例を示す正面図である。It is a front view which shows the 1st reference example of the wastegate valve | bulb of this invention. 本発明のウエストゲートバルブの第２の参考例を示す斜視図である。It is a perspective view which shows the 2nd reference example of the wastegate valve | bulb of this invention. （ａ）は本発明のウエストゲートバルブの実施例を示す斜視図、（ｂ）は（ａ）の正面図である。(A) is a perspective view which shows the Example of the wastegate valve | bulb of this invention, (b) is a front view of (a). （ａ）は本発明のウエストゲートバルブの第３の参考例を示す正面図、（ｂ）は（ａ）をＶＩＢ−ＶＩＢ方向から見た側面図である。(A) is the front view which shows the 3rd reference example of the wastegate valve | bulb of this invention, (b) is the side view which looked at (a) from the VIB-VIB direction.

以下、本発明の実施の形態を図示例と共に説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１、図２はエンジンに備えられる本発明のウエストゲートバルブを有する排気タービン過給機の一例を示すもので、排気タービン過給機１００のタービンハウジング１には、エンジンの排気マニホールドからの排気ガスが、タービンスクロール部２の排気ガス入口部３に導かれており、タービンスクロール部２に供給される排気ガスによってタービンインペラ４が回転される。圧縮機ハウジング５の圧縮機スクロール６内には、前記タービンインペラ４と同軸の圧縮機インペラ（図示せず）が設けてあり、圧縮機インペラの回転により軸中心の空気取入口７ａから取り入れた空気を圧縮し、圧縮した空気は圧縮空気取出口７ｂからエンジンに供給されてエンジンを過給するようになっている。   1 and 2 show an example of an exhaust turbine supercharger having a wastegate valve of the present invention provided in an engine. The turbine housing 1 of the exhaust turbine supercharger 100 includes exhaust gas from an exhaust manifold of the engine. The gas is guided to the exhaust gas inlet 3 of the turbine scroll unit 2, and the turbine impeller 4 is rotated by the exhaust gas supplied to the turbine scroll 2. A compressor impeller (not shown) coaxial with the turbine impeller 4 is provided in the compressor scroll 6 of the compressor housing 5, and the air taken in from the air intake port 7a at the center of the shaft by the rotation of the compressor impeller. The compressed air is supplied to the engine from the compressed air outlet 7b to supercharge the engine.

図２（ｂ）に示す如く、前記タービンインペラ４を駆動した排気ガスは、排気ガス出口部８から排気ガス流路９に排出される。又、エンジンに供給される圧縮空気の過給圧を制御するために、前記排気ガス入口部３と排気ガス出口部８との間に排気ガスをバイパスさせるバイパス流路１０を設けると共に、バイパス流路１０に設けた弁座面１０ａに当接してバイパス流路１０の開閉を行うウエストゲートバルブ１１を設けている。ウエストゲートバルブ１１は、エンジンへの過給圧が設定値を越えると、図２に示すウエストゲートバルブ１１の弁体１２が開かれて、排気ガスの一部がタービンインペラ４をバイパスしてバイパス流路１０から排気ガス流路９に送られるようになっている。 As shown in FIG. 2 (b), the exhaust gas that has driven the turbine impeller 4 is discharged from the exhaust gas outlet portion 8 to the exhaust gas passage 9. In addition, in order to control the supercharging pressure of the compressed air supplied to the engine, a bypass passage 10 for bypassing the exhaust gas is provided between the exhaust gas inlet portion 3 and the exhaust gas outlet portion 8, and a bypass flow is provided. A waste gate valve 11 that opens and closes the bypass passage 10 is provided in contact with the valve seat surface 10 a provided in the passage 10. When the supercharging pressure to the engine exceeds the set value, the waste gate valve 11 opens the valve body 12 of the waste gate valve 11 shown in FIG. 2, and a part of the exhaust gas bypasses the turbine impeller 4 and bypasses. The gas is sent from the flow channel 10 to the exhaust gas flow channel 9.

前記ウエストゲートバルブ１１を回動する回動軸１３は、バイパス流路１０を貫通してタービンハウジング１の外部に導かれており、回動軸１３の外側端部には、レバー１４を介して前記回動軸１３と平行な駆動ピン１５がクランク状に固定されている。前記駆動ピン１５には図１に示す如く、前記駆動ピン１５を押し引きすることにより前記レバー１４を介して回動軸１３を回動するアクチュエータ１６が接続されている。アクチュエータ１６は、圧縮空気の過給圧が設定値を越えたときに、ウエストゲートバルブ１１を開いて、前記排気ガスの一部をタービンインペラ４をバイパスさせて、前記排気ガス入口部３から排気ガス流路９に排出する。アクチュエータ１６としては空気駆動によるダイヤフラム式駆動装置が用いられる。   A rotating shaft 13 that rotates the waste gate valve 11 passes through the bypass flow path 10 and is guided to the outside of the turbine housing 1, and a lever 14 is provided at an outer end of the rotating shaft 13. A drive pin 15 parallel to the rotating shaft 13 is fixed in a crank shape. As shown in FIG. 1, the drive pin 15 is connected to an actuator 16 that rotates the rotary shaft 13 via the lever 14 by pushing and pulling the drive pin 15. When the supercharging pressure of the compressed air exceeds a set value, the actuator 16 opens the waste gate valve 11 to bypass a part of the exhaust gas through the turbine impeller 4 and exhaust the exhaust gas from the exhaust gas inlet 3. It discharges to the gas flow path 9. As the actuator 16, an air driven diaphragm type driving device is used.

前記ウエストゲートバルブ１１は、図２（ｂ）、図３に示す如く、前記回動軸１３に固定された取付板１７と、該取付板１７に取り付けられた弁体１２とを有している。   As shown in FIGS. 2B and 3, the waste gate valve 11 has a mounting plate 17 fixed to the rotating shaft 13 and a valve body 12 attached to the mounting plate 17. .

前記取付板１７は、円板状の支持板１８と、該支持板１８の外側に一体に形成されて、前記回動軸１３が嵌合する前記支持部１８の面と平行な嵌合穴１９を有する固定部２０とから構成されている。２１は前記回動軸１３と溶接固定するために前記固定部２０に備えた溶接穴である。   The mounting plate 17 is formed integrally with a disk-shaped support plate 18 and an outer side of the support plate 18, and a fitting hole 19 parallel to the surface of the support portion 18 to which the rotating shaft 13 is fitted. And a fixed portion 20 having Reference numeral 21 denotes a welding hole provided in the fixing part 20 for welding and fixing to the rotating shaft 13.

前記弁体１２は、シール面１２ａの背面側に、前記取付板１７の支持板１８の中心に備えた貫通穴１８ａに貫通するよう突出した貫通軸２２を形成していると共に、該貫通軸２２の軸心には取付ピン２３が形成されている。前記弁体１２の貫通軸２２を支持板１８の貫通穴１８ａに貫通させ、更に、前記取付ピン２３に座金２４を嵌合させて、座金２４から突出した前記取付ピン２３の先端をカシメ加工することでカシメ部２３'を形成することにより、前記弁体１２は、前記座金２４との間で支持板１８を挾持するようにして取付板１７に取り付けられる。   The valve body 12 is formed with a through shaft 22 projecting through a through hole 18a provided at the center of the support plate 18 of the mounting plate 17 on the back side of the seal surface 12a. A mounting pin 23 is formed on the shaft center. The through shaft 22 of the valve body 12 is passed through the through hole 18a of the support plate 18, and a washer 24 is fitted into the mounting pin 23, and the tip of the mounting pin 23 protruding from the washer 24 is crimped. Thus, by forming the crimping portion 23 ′, the valve body 12 is attached to the attachment plate 17 so as to hold the support plate 18 with the washer 24.

尚、前記取付板１７の支持板１８には、図２、図３に示すように、円板状の支持板１８と略同径の座金２４が取付られており、一方、取付板１７と一体の固定部２０の長手方向中心は、前記支持板１８の中心に対して距離Ｘだけ偏心（オフセット）しており、このため、図３に示すように、前記支持板１８が偏心した側の上面における座金２４の外側には平坦部２５が現われている。   As shown in FIGS. 2 and 3, a washer 24 having substantially the same diameter as the disk-shaped support plate 18 is attached to the support plate 18 of the attachment plate 17. The center of the fixing portion 20 in the longitudinal direction is eccentric (offset) by a distance X with respect to the center of the support plate 18, and therefore, as shown in FIG. 3, the upper surface on the side where the support plate 18 is eccentric. A flat portion 25 appears on the outer side of the washer 24.

前記したように、取付ピン２３により座金２４を介して取付板１７に取り付けた弁体１２は、取付板１７及び取付ピン２３との間に隙間を有しているために、弁体１２が排気ガスの作用を受けて回転する問題がある。   As described above, since the valve body 12 attached to the attachment plate 17 via the washer 24 by the attachment pin 23 has a gap between the attachment plate 17 and the attachment pin 23, the valve body 12 is exhausted. There is a problem of rotating under the action of gas.

本発明では、前記取付板１７と弁体１２との間に、回転規制手段２６を設けて、前記取付板１７に対して前記弁体１２が回転しないように規制した。   In the present invention, the rotation restricting means 26 is provided between the mounting plate 17 and the valve body 12 to restrict the valve body 12 from rotating with respect to the mounting plate 17.

図２、図３は、前記回転規制手段２６の第１の参考例を示しており、前記取付板１７を１つの被係止部５０と見做し、前記支持板１８から固定部２０に連なる部分の一側の被係止辺２７ａと他側の被係止辺２７ｂに対応して前記取付板１７を挟むように、前記弁体１２に、２つの係止部５１ａ，５１ｂを突設している。図３中、２８は、前記支持板１８における平坦部２５に対して弁体１２の軸中心を挟んで反対側の位置の支持板１８の外周に、外方へ突出して設けた押え凸部である。 2 and 3 show a first reference example of the rotation restricting means 26. The mounting plate 17 is regarded as one locked portion 50, and is continuous from the support plate 18 to the fixed portion 20. FIG. Two locking portions 51a and 51b are projected from the valve body 12 so as to sandwich the mounting plate 17 corresponding to the locked side 27a on one side and the locked side 27b on the other side. ing. In FIG. 3, reference numeral 28 denotes a presser convex portion that protrudes outward on the outer periphery of the support plate 18 at a position opposite to the flat portion 25 of the support plate 18 across the axial center of the valve body 12. is there.

図４は、本発明の第２の参考例を示しており、図４の参考例では、弁体１２に、支持板１８側（図４の上側）へ突出した１つの被係止部５０が設けてあり、前記取付板１７における前記他側の被係止辺２７ｂに近接した位置の支持板１８の外周に外方へ突出した係止部５１ａを設け、該係止部５１ａと前記他側の被係止辺２７ｂとからなる２つの係止部５１ａ，５１ｂによって前記被係止部５０を挟むようにしている。 FIG. 4 shows a second reference example of the present invention. In the reference example of FIG. 4, the valve body 12 has one locked portion 50 protruding toward the support plate 18 (upper side in FIG. 4). A locking portion 51a protruding outward is provided on the outer periphery of the support plate 18 at a position close to the locked side 27b on the other side of the mounting plate 17, and the locking portion 51a and the other side are provided. The locked portion 50 is sandwiched between two locked portions 51a and 51b each having a locked side 27b.

図５は、本発明の実施例を示しており、図５の実施例では、弁体１２に、支持板１８側（図４の上側）へ突出させた１つの被係止部５０を設け、又、前記取付板１７における前記支持板１８の外周に、前記被係止部５０を挟むように外方へ突出した２つの係止部５１ａ，５１ｂを設けた場合を示している。この時、２つの係止部５１ａ，５１ｂの一方（図５（ａ）では５１ａ）は、前記平坦部２５に対して弁体１２の軸中心を中心に反対側に位置している。又、図５に代えて、前記支持板１８の外周における前記係止部５１ａの位置に１つの被係止部５０を設け、該被係止部５０を挟むように、弁体１２に、支持板１８側（図４の上側）へ突出させた２つの係止部５１ａ，５１ｂを設けてもよい。 FIG. 5 shows an embodiment of the present invention. In the embodiment of FIG. 5, the valve body 12 is provided with one locked portion 50 that protrudes toward the support plate 18 (upper side in FIG. 4). Moreover, the case where the two latching | locking parts 51a and 51b which protruded outward are provided in the outer periphery of the said supporting plate 18 in the said mounting plate 17 so that the said to-be-latched part 50 may be pinched | interposed is shown. At this time, one of the two locking portions 51a and 51b (51a in FIG. 5A) is located on the opposite side of the flat portion 25 with the axial center of the valve body 12 as the center. Further, instead of FIG. 5, one locked portion 50 is provided at the position of the locking portion 51 a on the outer periphery of the support plate 18, and the valve body 12 is supported so as to sandwich the locked portion 50. You may provide the two latching | locking parts 51a and 51b protruded to the board 18 side (upper side of FIG. 4).

以下に、上記した参考例及び本発明の実施例の作動を説明する。 The operation of the reference example and the embodiment of the present invention will be described below.

図２〜図５に示す如く、前記取付板１７と弁体１２の一方に備えた１つの被係止部５０と、該１つの被係止部５０を挟んで回転を規制するよう前記取付板１７と弁体１２の他方に２つの係止部５１ａ，５１ｂを設けた回転規制手段２６を備えたことにより、弁体１２はＡ方向とＢ方向のいずれの方向にも回転が規制されるので、従来問題となっていた弁体１２が回転することによる偏摩耗の問題を確実に防止することができる。   As shown in FIGS. 2 to 5, one locked portion 50 provided on one of the mounting plate 17 and the valve body 12, and the mounting plate so as to restrict the rotation with the one locked portion 50 interposed therebetween. 17 is provided with rotation restricting means 26 provided with two locking portions 51a and 51b on the other side of the valve body 12, the rotation of the valve body 12 is restricted in both the A direction and the B direction. Thus, it is possible to reliably prevent the problem of uneven wear due to the rotation of the valve body 12 which has been a problem in the past.

又、前記ウエストゲートバルブ１１では、ウエストゲートバルブ１１とタービンハウジング１及び弁座面１０ａの製作誤差を解消するために、前記取付板１７の固定部２０の嵌合穴１９に回動軸１３を嵌合させ、弁体１２のシール面１２ａを弁座面１０ａに押付けた状態において、前記溶接穴２１を埋めるように溶接部２１ａを形成するようにして、取付板１７と回動軸１３を固定している。   Further, in the waste gate valve 11, in order to eliminate manufacturing errors of the waste gate valve 11, the turbine housing 1, and the valve seat surface 10 a, the rotation shaft 13 is provided in the fitting hole 19 of the fixing portion 20 of the mounting plate 17. The mounting plate 17 and the rotary shaft 13 are fixed so that the welded portion 21a is formed so as to fill the weld hole 21 in a state where the seal surface 12a of the valve body 12 is pressed against the valve seat surface 10a. doing.

溶接時には、前記弁体１２のシール面１２ａが弁座面１０ａに密着するように取付板１７を押し付けた状態で前記溶接を行う必要があるが、図２（ａ）に示すように、溶接作業は排気ガス流路９の狭い空間から行う必要があるため、取付板１７を安定して押し付けることが難しい。   At the time of welding, it is necessary to perform the welding while pressing the mounting plate 17 so that the sealing surface 12a of the valve body 12 is in close contact with the valve seat surface 10a. However, as shown in FIG. Since it is necessary to perform from the narrow space of the exhaust gas flow path 9, it is difficult to press the mounting plate 17 stably.

しかし、前記支持板１８の平坦部２５に対して弁体１２の軸中心を挟んで反対側の位置の支持板１８に押え凸部２８を設けたことにより、図３に示すような二股の押え具２９を用いて、前記押え凸部２８と平坦部２５を同時に押すことにより、取付板１７を確実に押し付けることができる。又、図５に示した実施例のように、前記支持板１８における平坦部２５に対し、弁体１２の軸中心を挟んで反対側位置に係止部５１ａが位置するように設けた場合には、該係止部５１ａと前記平坦部２５を押え具２９により同時に押付けることができる。 However, the presser convex portion 28 is provided on the support plate 18 on the opposite side of the flat portion 25 of the support plate 18 with the axial center of the valve body 12 interposed therebetween, so that the bifurcated presser foot as shown in FIG. By using the tool 29 to press the pressing convex portion 28 and the flat portion 25 at the same time, the mounting plate 17 can be reliably pressed. Further, as in the embodiment shown in FIG. 5, when the locking portion 51 a is located on the opposite side of the flat portion 25 of the support plate 18 across the axial center of the valve body 12. Can press the locking portion 51 a and the flat portion 25 simultaneously with the presser 29.

図６は、本発明の第３の参考例を示しており、図６の参考例では、前記取付板１７の下面（弁体１２側）には係止穴３０が形成してあり、又、前記弁体１２には前記係止穴３０に嵌合するように突出した係止凸部３１を設けることで、回転規制手段２６を構成している。上記係止穴３０と係止凸部３１を設ける位置は任意に選定することができる。尚、前記弁体１２に係止穴３０を設け、該係止穴３０に嵌合するように支持板１８の下面（弁タイ側）に係止凸部３１を設けてもよい。 FIG. 6 shows a third reference example of the present invention. In the reference example of FIG. 6, a locking hole 30 is formed on the lower surface (the valve body 12 side) of the mounting plate 17, and The valve body 12 is provided with a locking projection 31 protruding so as to fit in the locking hole 30, thereby constituting a rotation restricting means 26. The positions where the locking holes 30 and the locking projections 31 are provided can be arbitrarily selected. Note that a locking hole 30 may be provided in the valve body 12 and a locking projection 31 may be provided on the lower surface (valve tie side) of the support plate 18 so as to fit into the locking hole 30.

図６に示す第３の参考例では、前記取付板１７と弁体１２の一方に備えた係止穴３０と、該係止穴３０に嵌合する係止凸部３１を前記取付板１７と弁体１２の他方に設けたので、前記係止穴３０と係止凸部３１の係合により、弁体１２はＡ方向とＢ方向のいずれの方向にも回転が規制され、よって、従来問題となっていた弁体１２が回転することによる偏摩耗の問題を確実に防止することができる。 In the third reference example shown in FIG. 6, a locking hole 30 provided in one of the mounting plate 17 and the valve body 12, and a locking projection 31 fitted in the locking hole 30 are provided on the mounting plate 17. Since it is provided on the other side of the valve body 12, the rotation of the valve body 12 in both the A direction and the B direction is restricted by the engagement of the locking hole 30 and the locking projection 31. Thus, the problem of uneven wear due to the rotation of the valve body 12 can be reliably prevented.

尚、本発明のウエストゲートバルブは、上述の実施例にのみ限定されるものではなく、排気タービン過給機付きエンジン或いはその他のエンジン等の種々の排気ガス流路に設けられるウエストゲートバルブに適用することができること、その他、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。   The waste gate valve of the present invention is not limited to the above-described embodiment, and is applied to a waste gate valve provided in various exhaust gas passages such as an engine with an exhaust turbine supercharger or other engines. Of course, various modifications can be made without departing from the scope of the present invention.

１１ ウエストゲートバルブ
１２ 弁体
１３ 回動軸
１７ 取付板（被係止部）
１８ 支持板
２３ 取付ピン
２４ 座金
２５ 平坦部
２６ 回転規制手段
５０ 被係止部
５１ａ，５１ｂ 係止部 11 Wastegate valve 12 Valve element 13 Rotating shaft 17 Mounting plate (locked part)
18 Support plate 23 Mounting pin 24 Washer
25 Flat part 26 Rotation restricting means 50 Locked part 51a, 51b Locking part

Claims (1)

支持板を含み回動軸に固定される取付板に、取付ピンと座金を介して弁体が取り付けられているウエストゲートバルブであって、
前記取付板と弁体との間に設けられ、前記取付板に対し前記弁体が回転しないように規制する回転規制手段と、
前記支持板における平坦部に対して前記弁体の軸中心を挟んで反対側の位置における前記支持板の外周に設けられた押え凸部とを備え、
前記回転規制手段が、前記取付板と弁体の一方に備えた１つの被係止部と、該１つの被係止部を挟んで回転を規制するよう前記取付板と弁体の他方に備えた２つの係止部とからなり、前記２つの係止部の一方は、前記平坦部に対して前記弁体の軸中心を挟んで反対側に位置していることを特徴とするウエストゲートバルブ。 A wastegate valve in which a valve body is attached to a mounting plate including a support plate and fixed to a rotating shaft via a mounting pin and a washer,
A rotation restricting means provided between the mounting plate and the valve body for restricting the valve body from rotating relative to the mounting plate;
A presser convex portion provided on the outer periphery of the support plate at a position opposite to the flat portion of the support plate across the axial center of the valve body ,
The rotation restricting means includes one locked portion provided on one of the mounting plate and the valve body, and the other of the mounting plate and the valve body so as to restrict the rotation with the one locked portion interposed therebetween. A wastegate valve, wherein one of the two locking portions is located on the opposite side of the flat portion with the axial center of the valve body interposed therebetween. .
JP2011138073A 2011-06-22 2011-06-22 Wastegate valve Active JP5845650B2 (en)

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CN107429603B (en) 2015-03-05 2019-12-03 三菱重工发动机和增压器株式会社 Exhaust gas by-pass valve and turbocharger
JP2018131939A (en) 2017-02-14 2018-08-23 トヨタ自動車株式会社 Turbocharger
KR20200138162A (en) 2018-04-05 2020-12-09 니탄 밸브 가부시키가이샤 Waste gate valve

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JPWO2021070463A1 (en) * 2019-10-10 2021-04-15
WO2021070463A1 (en) * 2019-10-10 2021-04-15 株式会社Ihi Supercharger
JP7322959B2 (en) 2019-10-10 2023-08-08 株式会社Ihi supercharger
US11725574B2 (en) 2019-10-10 2023-08-15 Ihi Corporation Operation mechanism of turbocharger

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