JPH08334030A - Waist gate valve of turbocharger - Google Patents
Waist gate valve of turbochargerInfo
- Publication number
- JPH08334030A JPH08334030A JP7138972A JP13897295A JPH08334030A JP H08334030 A JPH08334030 A JP H08334030A JP 7138972 A JP7138972 A JP 7138972A JP 13897295 A JP13897295 A JP 13897295A JP H08334030 A JPH08334030 A JP H08334030A
- Authority
- JP
- Japan
- Prior art keywords
- washer
- shaft
- bearing
- exhaust gas
- clearance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明はターボ・チャージャ付内
燃機関におけるウェイスト・ゲート・バルブ（過給圧制
御弁）に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste gate valve (supercharging pressure control valve) in an internal combustion engine with a turbocharger.
【０００２】[0002]
【従来の技術】ターボ・チャージャのウェイスト・ゲー
ト・バルブは、図３に示すように、バルブ１を取り付け
たアーム２の基部を、タービン・ハウジング３に固定し
た軸受（ブッシュ）４に嵌合したシャフト５の一端（図
示左端）に溶接固着すると共に、シャフト４の他端に固
着したレバー６の可動端を図示されていないアクチュエ
ータとリンクで連結している。符号Ｆはアーム２とシャ
フト４の溶接箇所を示す。2. Description of the Related Art In a waste gate valve of a turbocharger, as shown in FIG. 3, a base portion of an arm 2 having a valve 1 attached is fitted to a bearing (bush) 4 fixed to a turbine housing 3. The shaft 5 is welded and fixed to one end (the left end in the drawing), and the movable end of the lever 6 fixed to the other end of the shaft 4 is connected to an actuator (not shown) by a link. Reference numeral F indicates a welded portion of the arm 2 and the shaft 4.
【０００３】シャフト５は排気ガスの高熱によって熱膨
張しても軸受４と遊合するように十分大きなクリアラン
スを有して軸受４に挿通されており、通常用いられるシ
ャフト５の直径６〜１０ｍｍに対し、軸受とのクリアラ
ンスは直径の差で０．２ｍｍ程度に設定されている。The shaft 5 is inserted into the bearing 4 with a sufficiently large clearance so that it can play with the bearing 4 even if it thermally expands due to the high heat of the exhaust gas. The shaft 5 usually used has a diameter of 6 to 10 mm. On the other hand, the clearance from the bearing is set to about 0.2 mm due to the difference in diameter.
【０００４】[0004]
【発明が解決しようとする課題】前記従来の技術では、
軸受４とシャフト５のクリアランスから排気ガスが漏れ
るため、排気ガス中のすすによって周辺が黒く汚れて見
栄えを悪くする。SUMMARY OF THE INVENTION In the above conventional technique,
Since the exhaust gas leaks from the clearance between the bearing 4 and the shaft 5, soot in the exhaust gas stains the surrounding area black and makes it unattractive.
【０００５】自動車用途では、この汚れが目立たない場
所に機関が搭載されているので、問題になっていない
が、船舶用途では船体が繊維強化プラスチック（ＦＲ
Ｐ）であり、かつ砂ぼこり等が浸入しないエンジンルー
ムになっているため、すすで汚れると見栄えが悪くなっ
て、商品性も低下するという問題点があった。For automobile applications, since the engine is installed in a place where this dirt is not noticeable, this is not a problem, but for marine applications, the hull is made of fiber reinforced plastic (FR).
Since it is P) and the engine room does not allow dust and the like to enter, there is a problem in that if it gets dirty with soot, the appearance becomes poor and the commercialability also deteriorates.
【０００６】そこで本発明はかかる問題点を解消できる
ターボ・チャージャのウェイスト・ゲート・バルブを提
供することを目的とする。Therefore, an object of the present invention is to provide a waste gate valve for a turbocharger which can solve the above problems.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するため
に、請求項１の発明は、エンジンからタービンに流入す
る排気ガスをバイパスさせるウェイスト・ゲート・バル
ブを備えたターボ・チャージャにおいて、軸受（４）に
挿通したシャフト（５）の一端、特にバルブ（１）を取
り付けたアーム（２）と軸受（４）との間に、ワッシャ
（９）を嵌合すると共に、このワッシャ（９）の内径を
軸受（４）の内径より小さく定めたことを特徴とするも
のである。In order to achieve the above object, the invention of claim 1 is a turbocharger equipped with a waste gate valve for bypassing exhaust gas flowing from an engine to a turbine. 4) A washer (9) is fitted between one end of the shaft (5) inserted through the shaft (5), particularly between the arm (2) to which the valve (1) is attached and the bearing (4). The inner diameter is set smaller than the inner diameter of the bearing (4).
【０００８】請求項２の発明は、請求項１記載のターボ
・チャージャのウェイスト・ゲート・バルブにおいて、
ワッシャ（９）が耐熱ステンレス鋼製で、ドーナツ形で
あることを特徴とするものである。According to a second aspect of the present invention, in the waste gate valve for a turbocharger according to the first aspect,
The washer (9) is made of heat-resistant stainless steel and has a donut shape.
【０００９】そして請求項３の発明は、請求項１又は２
記載のターボ・チャージャのウェイスト・ゲート・バル
ブにおいて、ワッシャ（９）の内径とシャフト（５）の
外径との差を３２．５μｍ以下に定めたことを特徴とす
るものである。The invention of claim 3 relates to claim 1 or 2.
In the described turbocharger waste gate valve, the difference between the inner diameter of the washer (9) and the outer diameter of the shaft (5) is set to 32.5 μm or less.
【００１０】[0010]
【作用】請求項１の発明では、エンジンが作動すると排
気ガスによって、シャフト（５）の温度がワッシャ
（９）の温度よりも上昇して、熱膨張のため両者の間の
クリアランスが減少または無くなる。また、排気ガスの
圧力によって、アーム（２）がワッシャ（９）を軸受
（４）に押し付け、軸受（４）とシャフト（５）の間の
クリアランスを通って外部へ洩れる排気ガスを軽減す
る。According to the invention of claim 1, when the engine is operated, the temperature of the shaft (5) rises above the temperature of the washer (9) due to the exhaust gas, and the clearance between the shaft and the washer is reduced or eliminated due to thermal expansion. . Further, the arm (2) presses the washer (9) against the bearing (4) by the pressure of the exhaust gas, and reduces the exhaust gas leaking to the outside through the clearance between the bearing (4) and the shaft (5).
【００１１】請求項２の発明では、ワッシャ（９）の製
作、組付けが簡単になり、かつその耐久性が良い。そし
て請求項３の発明では、通常用いる６〜１０ｍｍ程度の
シャフト（５）の直径の場合に、排気ガスの高温によっ
て、ワッシャ（９）とシャフト（５）の間のクリアラン
スを無くし、排気ガスの洩れを効果的に低減する。According to the second aspect of the invention, the washer (9) can be easily manufactured and assembled, and its durability is good. In the invention of claim 3, when the diameter of the shaft (5) used normally is about 6 to 10 mm, the clearance between the washer (9) and the shaft (5) is eliminated due to the high temperature of the exhaust gas, and the exhaust gas Effectively reduce leakage.
【００１２】[0012]
【実施例】図１（ａ）（ｂ）（ｃ）と図２は本発明の実
施例で、１は図示されてないエンジンからタービンに流
入する排気ガスをバイパスさせるバルブで、アーム２の
可動端に取付られている。1 (a) (b) (c) and FIG. 2 show an embodiment of the present invention, in which 1 is a valve for bypassing exhaust gas flowing into a turbine from an engine (not shown), and the arm 2 is movable. It is attached to the end.
【００１３】３はタービン・ハウジング、４は軸受（ブ
ッシュ）でタービン・ハウジング３に固定してある。５
は軸受４に緩く嵌合したシャフトで、その一端（図示左
端）にアーム２の基端が溶接されている。A turbine housing 3 and a bearing (bush) 4 are fixed to the turbine housing 3. 5
Is a shaft loosely fitted to the bearing 4, and the base end of the arm 2 is welded to one end (the left end in the drawing) of the shaft.
【００１４】６はシャフト５の他端にその基端を固着し
たレバーで、その可動端は、特に図２（ａ）（ｂ）に示
すように、アクチュエータ７とリンク８を介して連結さ
れている。Reference numeral 6 denotes a lever whose base end is fixed to the other end of the shaft 5, and its movable end is connected to an actuator 7 via a link 8 as shown in FIGS. 2 (a) and 2 (b). There is.
【００１５】９は耐熱性ステンレス鋼ＳＵＳ３０４製の
図１（ｃ）に示す形状のドーナツ形のワッシャで、ター
ボ・チャージャを組み立てるとき、シャフト５を軸受４
に挿通する前に、図１（ｂ）に示すように、ワッシャ９
をシャフト５に遊合する。その結果、ワッシャ９は、図
１（ａ）と図２（ａ）に示すように、シャフト５の左
端、特にバルブ１を取り付けたアーム２と軸受４の左端
との間にシャフト５に嵌まったかたちで介装される。Reference numeral 9 denotes a doughnut-shaped washer made of heat-resistant stainless steel SUS304 and having a shape shown in FIG. 1 (c). When the turbocharger is assembled, the shaft 5 and the bearing 4 are used.
As shown in Fig. 1 (b), the washer 9
Play with shaft 5. As a result, the washer 9 is fitted onto the shaft 5 as shown in FIGS. 1 (a) and 2 (a), particularly between the left end of the shaft 5, especially between the arm 2 having the valve 1 attached and the left end of the bearing 4. It is inserted in the form.
【００１６】軸受４の材質はステンレス系焼結材、シャ
フト５の材質はＳＵＨ３５で、これらと前記ワッシャ９
の熱膨張率は１３〜１６×１０-6／℃である。また、シ
ャフト５の直径は８ｍｍ、軸受４とシャフト５のクリア
ランスは直径の差で０．２ｍｍ、ワッシャ９とシャフト
５のクリアランスは直径の差で３２．５μｍ以下に定め
てある。The bearing 4 is made of a stainless sintered material and the shaft 5 is made of SUH35.
Has a coefficient of thermal expansion of 13 to 16 × 10 −6 / ° C. The diameter of the shaft 5 is 8 mm, the clearance between the bearing 4 and the shaft 5 is 0.2 mm in diameter difference, and the clearance between the washer 9 and the shaft 5 is 32.5 μm or less in diameter difference.
【００１７】排気ガスは８００℃程度の温度の腐蝕性雰
囲気で、バルブ１、アーム２及びシャフト５の左端はこ
の排気ガスの雰囲気にさらされる。そのため、昇温時の
部品の温度は、 シャフトの温度＞ワッシャ９の温度＞軸受４の温度 の順になる。従ってシャフト５とワッシャ９の間のクリ
アランスがなくなって、両者は固着する。軸受４とシャ
フト５の間にはクリアランスが残るため両者は固着せ
ず、シャフト５の回転摺動は可能である。The exhaust gas is in a corrosive atmosphere at a temperature of about 800 ° C., and the left ends of the valve 1, arm 2 and shaft 5 are exposed to this exhaust gas atmosphere. Therefore, the temperature of the parts when the temperature is raised is in the order of the temperature of the shaft> the temperature of the washer 9> the temperature of the bearing 4. Therefore, there is no clearance between the shaft 5 and the washer 9, and the two are fixed. Since a clearance remains between the bearing 4 and the shaft 5, the bearing 4 and the shaft 5 are not fixed to each other, and the shaft 5 can be rotated and slid.
【００１８】なお、排気ガスの圧力と大気との差圧が、
アーム２の基部に作用して、ワッシャ９を軸受４の左端
に押し付けるため、ワッシャ９とシャフト５のクリアラ
ンスが温度上昇でなくなる前に、ワッシャ９と軸受４の
左端、及びワッシャ９とアーム２との間の隙間が極小の
状態になっており、この状態で、ワッシャ９とシャフト
５のクリアランスがなくなってワッシャ９がシャフト５
に固着する。The pressure difference between the exhaust gas pressure and the atmosphere is
Since the washer 9 is pressed against the left end of the bearing 4 by acting on the base of the arm 2, the washer 9 and the left end of the bearing 4 and the washer 9 and the arm 2 are pressed before the clearance between the washer 9 and the shaft 5 is increased. The gap between them is extremely small. In this state, the clearance between the washer 9 and the shaft 5 disappears, and the washer 9 moves to the shaft 5
Stick to.
【００１９】そのため、軸受４とシャフト５の間のクリ
アランスを通って洩れる排気ガスはワッシャ９により抑
制されて低減する。このようにワッシャ９の右側の側面
が軸受４の左端面に当接していわゆるシール部材として
作用する。Therefore, the exhaust gas leaking through the clearance between the bearing 4 and the shaft 5 is suppressed and reduced by the washer 9. In this way, the right side surface of the washer 9 contacts the left end surface of the bearing 4 and acts as a so-called seal member.
【００２０】[0020]
【発明の効果】本発明のターボ・チャージャのウェイス
ト・ゲート・バルブは上述のように構成されているの
で、従来の設計を殆ど変更することなく、単にワッシャ
（９）を追加するだけで、排気ガスの洩れを低減でき
る。Since the waste gate valve of the turbocharger of the present invention is constructed as described above, the exhaust gas can be exhausted by simply adding the washer (9) with almost no change in the conventional design. Gas leakage can be reduced.
【００２１】また、ワッシャをドーナツ形の耐熱ステン
レス鋼製としたので、製作が簡単であるばかりでなく、
耐久性が期待できる。更にまた、ワッシャ（９）とシャ
フト（５）のクリアランスを直径の差で３２．５μｍ以
下にすることにより、昇温時のクリアランスをなくし、
排気ガスの洩れを効果的に低減できる。Also, since the washer is made of a donut-shaped heat-resistant stainless steel, not only is it easy to manufacture,
Durability can be expected. Furthermore, the clearance between the washer (9) and the shaft (5) is reduced to 32.5 μm or less due to the difference in diameter to eliminate the clearance at the time of temperature rise.
Exhaust gas leakage can be effectively reduced.
【図１】（ａ）は本発明の実施例におけるウェイスト・
ゲート・バルブ周辺の正面図、（ｂ）は同図（ａ）の分
解図、（ｃ）は同図（ａ）（ｂ）に用いるワッシャの斜
視図である。FIG. 1 (a) shows a waste according to an embodiment of the present invention.
FIG. 3 is a front view of the vicinity of a gate valve, (b) is an exploded view of FIG. (A), and (c) is a perspective view of a washer used in (a) and (b) of FIG.
【図２】（ａ）は本発明の実施例におけるターボ・チャ
ージャの正面図、（ｂ）は同図（ａ）の一部をＡ方向か
らみた図である。2A is a front view of a turbocharger according to an embodiment of the present invention, and FIG. 2B is a view of a part of FIG.
【図３】従来技術のターボ・チャージャの一部を示す正
面図である。FIG. 3 is a front view showing a portion of a prior art turbocharger.
１…バルブ ２…アーム ３…タービン・ハウジング ４…軸受 ５…シャフト ９…ワッシャ 1 ... Valve 2 ... Arm 3 ... Turbine housing 4 ... Bearing 5 ... Shaft 9 ... Washer
Claims (3)
スをバイパスさせるウェイスト・ゲート・バルブを備え
たターボ・チャージャにおいて、 軸受に挿通したシャフトの一端、特にバルブを取り付け
たアームと軸受との間に、ワッシャを嵌合すると共に、 このワッシャの内径を軸受の内径より小さく定めたこと
を特徴とするターボ・チャージャのウェイスト・ゲート
・バルブ。1. A turbocharger equipped with a waste gate valve for bypassing exhaust gas flowing from an engine to a turbine, wherein one end of a shaft inserted through a bearing, particularly between an arm having the valve attached and the bearing, A washer gate valve for turbocharger, characterized in that the washer is fitted and the inner diameter of the washer is set smaller than the inner diameter of the bearing.
ナツ形であることを特徴とする請求項１記載のターボ・
チャージャのウェイスト・ゲート・バルブ。2. The turbocharger according to claim 1, wherein the washer is made of heat-resistant stainless steel and has a donut shape.
Charger waste gate valve.
を３２．５μｍ以下に定めたことを特徴とする請求項１
又は２記載のターボ・チャージャーのウェイスト・ゲー
ト・バルブ。3. The difference between the inner diameter of the washer and the outer diameter of the shaft is set to 32.5 μm or less.
Alternatively, the waste gate valve of the turbocharger described in 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7138972A JPH08334030A (en) | 1995-06-06 | 1995-06-06 | Waist gate valve of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7138972A JPH08334030A (en) | 1995-06-06 | 1995-06-06 | Waist gate valve of turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08334030A true JPH08334030A (en) | 1996-12-17 |
Family
ID=15234485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7138972A Pending JPH08334030A (en) | 1995-06-06 | 1995-06-06 | Waist gate valve of turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08334030A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005008041A1 (en) * | 2003-07-11 | 2005-01-27 | Malcolm George Leavesley | Turbocharger apparatus having an exhaust gas sealing system for preventing gas leakage from the turbocharger apparatus |
| US7080510B2 (en) | 2003-10-08 | 2006-07-25 | Aisin Seiki Kabushiki Kaisha | Exhaust gas sealing system for turbocharger |
| EP2574754A3 (en) * | 2011-08-27 | 2014-05-14 | Volkswagen Aktiengesellschaft | Valve device, turbocharger with valve device, combustion engine with turbocharger and vehicle with combustion engine |
| DE102013001978A1 (en) | 2013-02-05 | 2014-08-07 | Volkswagen Aktiengesellschaft | Valve unit for a wastegate system and turbocharger |
| US9080504B2 (en) | 2011-06-17 | 2015-07-14 | Elringklinger Ag | Actuating device for an exhaust gas flow control element of an exhaust gas turbocharger |
| JP2015537163A (en) * | 2012-12-14 | 2015-12-24 | ボーグワーナー インコーポレーテッド | Exhaust gas turbocharger control components |
| US9574456B2 (en) | 2012-06-26 | 2017-02-21 | Ihi Corporation | Turbocharger |
| US10408085B2 (en) | 2014-06-09 | 2019-09-10 | Ihi Corporation | Turbocharger |
| US10465599B2 (en) | 2014-06-20 | 2019-11-05 | Ihi Corporation | Turbocharger |
| US10526956B2 (en) | 2014-06-11 | 2020-01-07 | Ihi Corporation | Turbocharger |
-
1995
- 1995-06-06 JP JP7138972A patent/JPH08334030A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7644583B2 (en) | 2003-07-11 | 2010-01-12 | Malcolm George Leavesley | Turbocharger apparatus having an exhaust gas sealing system for preventing gas leakage from the turbocharger apparatus |
| WO2005008041A1 (en) * | 2003-07-11 | 2005-01-27 | Malcolm George Leavesley | Turbocharger apparatus having an exhaust gas sealing system for preventing gas leakage from the turbocharger apparatus |
| US7080510B2 (en) | 2003-10-08 | 2006-07-25 | Aisin Seiki Kabushiki Kaisha | Exhaust gas sealing system for turbocharger |
| US9080504B2 (en) | 2011-06-17 | 2015-07-14 | Elringklinger Ag | Actuating device for an exhaust gas flow control element of an exhaust gas turbocharger |
| EP2574754A3 (en) * | 2011-08-27 | 2014-05-14 | Volkswagen Aktiengesellschaft | Valve device, turbocharger with valve device, combustion engine with turbocharger and vehicle with combustion engine |
| US9574456B2 (en) | 2012-06-26 | 2017-02-21 | Ihi Corporation | Turbocharger |
| JP2015537163A (en) * | 2012-12-14 | 2015-12-24 | ボーグワーナー インコーポレーテッド | Exhaust gas turbocharger control components |
| JP2018040367A (en) * | 2012-12-14 | 2018-03-15 | ボーグワーナー インコーポレーテッド | Control arrangement of exhaust-gas turbocharger |
| WO2014121986A1 (en) | 2013-02-05 | 2014-08-14 | Volkswagen Aktiengesellschaft | Valve unit for a waste gate system and turbocharger |
| DE102013001978A1 (en) | 2013-02-05 | 2014-08-07 | Volkswagen Aktiengesellschaft | Valve unit for a wastegate system and turbocharger |
| US10408085B2 (en) | 2014-06-09 | 2019-09-10 | Ihi Corporation | Turbocharger |
| US10526956B2 (en) | 2014-06-11 | 2020-01-07 | Ihi Corporation | Turbocharger |
| US10465599B2 (en) | 2014-06-20 | 2019-11-05 | Ihi Corporation | Turbocharger |
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