JPH086601B2 - Boost pressure control valve device - Google Patents
Boost pressure control valve deviceInfo
- Publication number
- JPH086601B2 JPH086601B2 JP1127152A JP12715289A JPH086601B2 JP H086601 B2 JPH086601 B2 JP H086601B2 JP 1127152 A JP1127152 A JP 1127152A JP 12715289 A JP12715289 A JP 12715289A JP H086601 B2 JPH086601 B2 JP H086601B2
- Authority
- JP
- Japan
- Prior art keywords
- passage
- housing
- diaphragm
- bypass passage
- fan
- 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.)
- Expired - Lifetime
Links
Landscapes
- Supercharger (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、スロットル弁が閉じる減速時に発生する
スロットル弁上流側吸気路における異常昇圧を抑制する
過給圧制御弁装置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supercharging pressure control valve device that suppresses abnormal pressurization in an intake passage on the upstream side of a throttle valve that occurs during deceleration when the throttle valve closes.
第2図は、本出願人が既に出願している内燃機関用の
過給圧制御装置を示す断面図であり、図において、
(1)は空気取入部となるエアクリーナ、(2)はエア
クリーナ(1)からの吸入空気(以下吸気と略す)の通
路となる吸気管、(3)は吸気管(2)に装着された過
給機、(4)は吸気管(2)のうち過給機(3)の上流
側を示す第1の吸気通路、(5)は同じく過給機(3)
の下流側を示す第2の吸気通路、(6)は吸気量を制御
するスロットル弁、(7)は吸気管(2)のうちスロッ
トル弁(6)の下流側を示す第3の吸気通路、(8)は
第1および第2の吸気通路(4),(5)を連通した減
圧通路、(9)は減圧通路(8)を開閉制御することに
より第2の吸気通路(5)の過給圧を制御する過給圧制
御弁である。FIG. 2 is a cross-sectional view showing a supercharging pressure control device for an internal combustion engine, which the present applicant has already filed.
(1) is an air cleaner that serves as an air intake part, (2) is an intake pipe that serves as a passage for intake air (hereinafter, abbreviated as "intake air") from the air cleaner (1), and (3) is an exhaust pipe installed in the intake pipe (2). Feeder, (4) is the first intake passage showing the upstream side of the supercharger (3) in the intake pipe (2), and (5) is also the supercharger (3)
Second intake passage showing the downstream side of the intake valve, (6) a throttle valve for controlling the intake amount, (7) a third intake passage showing the intake pipe (2) downstream of the throttle valve (6), (8) is a decompression passage communicating the first and second intake passages (4), (5), and (9) is a pressure reduction passage of the second intake passage (5) by controlling the opening and closing of the decompression passage (8). It is a supercharging pressure control valve for controlling the supply pressure.
以下、その過給圧制御弁(9)の詳細について説明す
ると、(10)は円筒状のハウジング、(11)はハウジン
グ(10)の壁部の内部に形成された第2の吸気通路
(5)の圧力を導出する第2の通路、(13)はハウジン
グ(10)の下端部であるフランジで、第2の吸気通路
(5)を構成する吸気管(2)に形成された開口部(1
4)に装着されている。(15)はフランジ(14)の内周
側上端の開口部周辺を示す弁座部、(16)は吸気の出入
口となるニッケル、(17)はハウジング(10)の頂端周
縁部と有底円筒状のケース(18)との頂端周縁部とで周
縁部を挟持した円板状のダイアフラム、(19)はダイヤ
フラム(17)とケース(18)とで形成される第1圧力
室、(20)は第3の吸気通路(7)の圧力を第1の圧力
室(19)に導くためにこれら両者を圧力取出ポート(2
1)およびニップル(22)を介して連通した第1の通
路、(23a)および(23b)はそれぞれダイアフラム(1
7)の中央部を挟持する皿状のホルダ、(24)は一端が
ホルダ(23a),(23b)の中心部に装着されたロッド、
(25)はロッド(24)の他端に装着されるとともに弁座
部(15)に当接するように設けられ、減圧通路(8)を
開閉する円板状の弁体、(26)はロッド(24)を摺動自
在に支承する軸受、(27)は軸受(26)を保持する軸受
ホルダ、(28)はケース(18)とホルダ(23a)との間
に縮設され、ダイアフラム(17)を閉弁方向に付勢する
弾性部材となるスプリング、(29)はダイアフラム(1
7)と軸受ホルダ(27)との間に形成され第2の吸気通
路(5)に第2の通路(11)で連通された第2の圧力
室、(30)は第2の通路(11)中に設けられ、第2の通
路(11)による圧力の伝達速度に時間の遅れを与えるた
めの通気抵抗となる絞りである。The details of the supercharging pressure control valve (9) will be described below. (10) is a cylindrical housing, (11) is a second intake passage (5) formed inside the wall of the housing (10). ) Is a second passage for deriving pressure, and (13) is a flange which is a lower end portion of the housing (10), and is an opening () formed in the intake pipe (2) forming the second intake passage (5). 1
It is attached to 4). (15) is a valve seat portion around the opening at the upper end on the inner peripheral side of the flange (14), (16) is nickel that serves as an inlet and outlet of intake air, and (17) is a top end peripheral portion of the housing (10) and a bottomed cylinder. -Shaped case (18) and a disk-shaped diaphragm having a peripheral edge sandwiched between the peripheral edge and a case (18), a first pressure chamber formed by the diaphragm (17) and the case (18), (20) Introduces the pressure of the third intake passage (7) into the first pressure chamber (19) in order to guide them to the pressure extraction port (2
1) and the first passage communicating with each other through the nipple (22), (23a) and (23b) are respectively connected to the diaphragm (1
7) A dish-shaped holder for sandwiching the central part, (24) is a rod whose one end is attached to the central part of the holders (23a), (23b),
(25) is a disc-shaped valve element that is attached to the other end of the rod (24) and abuts on the valve seat portion (15) to open and close the pressure reducing passage (8), and (26) is a rod. A bearing that slidably supports (24), (27) is a bearing holder that holds the bearing (26), (28) is contracted between the case (18) and the holder (23a), and the diaphragm (17 ) Is a spring that serves as an elastic member that urges () in the valve closing direction, and (29) is the diaphragm (1
The second pressure chamber, which is formed between the bearing holder (27) and the second holder (27) and communicates with the second intake passage (5) by the second passage (11), and the second pressure chamber (30) is the second passage (11). ), Which is a throttle provided as a ventilation resistance for giving a time delay to the pressure transmission speed through the second passage (11).
次に、上記のように構成された過給圧制御弁装置の動
作について説明する。自動車の中および高負荷運転状態
においては、スロットル弁(6)は全開状態に近く、ま
た過給機(3)の過給効果によって第2、第3の吸気通
路(5),(7)はともに高正圧状態にあり、第1の圧
力室(19)内および第2の圧力室(29)内も同正圧が印
加されているため、ダイアフラム(17)にはスプリング
(28)による弁体(25)の閉弁方向の付勢力が働き、弁
体(25)は完全閉弁状態にある。Next, the operation of the supercharging pressure control valve device configured as described above will be described. In the middle and high load operation state of the vehicle, the throttle valve (6) is close to the fully opened state, and the supercharging effect of the supercharger (3) causes the second and third intake passages (5), (7) to Both are in a high positive pressure state, and the same positive pressure is applied to the inside of the first pressure chamber (19) and the inside of the second pressure chamber (29) as well. The urging force of the body (25) in the valve closing direction acts, and the valve body (25) is in the completely closed state.
そして、上記中および高負荷運転状態からスロットル
弁(6)が急閉弁する減速運転に変化すると第3の吸気
通路(7)の圧力は高負圧に変化して第1の圧力室(1
9)は高負圧となり、また第2の吸気通路(5)の過給
圧が過給運転中以上に昇圧し高正圧となり、その圧力が
第2の通路(11)を通って第2の圧力室(29)に伝達さ
れ、弁体(25)はスプリング(28)の弾発力に逆らって
開弁し、スロットル弁(6)の上流側の圧力上昇は防止
される。Then, when the medium and high load operation states are changed to the deceleration operation in which the throttle valve (6) is rapidly closed, the pressure in the third intake passage (7) changes to a high negative pressure and the first pressure chamber (1
9) becomes a high negative pressure, and the supercharging pressure in the second intake passage (5) rises to a high positive pressure more than during the supercharging operation, and the pressure passes through the second passage (11) to the second Is transmitted to the pressure chamber (29) of the throttle valve (6), the valve body (25) opens against the elastic force of the spring (28), and the pressure increase on the upstream side of the throttle valve (6) is prevented.
上記のように構成された従来の過給圧制御弁装置にお
いては、過給機3と過給圧制御弁9とは吸気管2を介し
て別個独立に接続されており、取り付けスペースが大き
くなるという問題点があった。また、吸気管2とともに
バイパス通路8のための配管を用意しなければならず、
製作コストも嵩むという問題点もあった。In the conventional supercharging pressure control valve device configured as described above, the supercharger 3 and the supercharging pressure control valve 9 are separately and independently connected via the intake pipe 2, and the installation space becomes large. There was a problem. Also, the pipe for the bypass passage 8 must be prepared together with the intake pipe 2,
There was also a problem that the manufacturing cost would increase.
この発明は、かかる問題点を解消するためになされた
もので、小型化および製作コストの低減化を図ることの
できる過給圧制御弁装置を得ることを目的とする。The present invention has been made to solve the above problems, and an object of the present invention is to obtain a supercharging pressure control valve device capable of downsizing and manufacturing cost reduction.
この発明に係る過給圧制御弁装置は、内部にファンが
回転自在に設けられたハウジングと、このハウジングに
ダイヤフラムを介して取り付けられたケースと、前記ハ
ウジングの内部に形成され前記ファンの回転により吸入
された加圧空気の通路となる吸気通路と、ハウジングの
内部に形成され前記吸気通路と連通した第1および第2
のバイパス通路と、前記ダイヤフラムに取り付けられダ
イヤフラムの応動により前記第2のバイパス通路を開口
して前記第1のバイパス通路と第2のバイパス通路とを
連通する弁体とを備え、前記弁体は前記ダイヤフラムの
中央部に一体に設けられ、前記ファン上流の吸気通路に
連通した第2のバイパス通路を内周に設け、前記ファン
下流の吸気通路に連通した第1のバイパス通路を外周に
設けたものである。A supercharging pressure control valve device according to the present invention includes a housing in which a fan is rotatably provided, a case attached to the housing via a diaphragm, and a fan formed inside the housing to rotate the fan. An intake passage that serves as a passage for the pressurized air that is taken in, and first and second communication passages that are formed inside the housing and communicate with the intake passage.
A bypass passage, and a valve body attached to the diaphragm to open the second bypass passage by the response of the diaphragm to communicate the first bypass passage and the second bypass passage with each other. A second bypass passage integrally provided at the center of the diaphragm and communicating with the intake passage upstream of the fan is provided on the inner circumference, and a first bypass passage communicating with the intake passage downstream of the fan is provided on the outer circumference. It is a thing.
この発明においては、中および高負荷運転状態からス
ロットル弁が急閉弁する減速運転に変化すると、弁体は
開き、加圧空気は第1のバイパス通路と第2のバイパス
通路との間を循環する。According to the present invention, when the medium and high load operation states are changed to the deceleration operation in which the throttle valve is rapidly closed, the valve body opens and the pressurized air circulates between the first bypass passage and the second bypass passage. To do.
以下、この発明の実施例を図について説明する。第1
図はこの発明の一実施例を示す断面図で、過給機と過給
圧制御弁とを一体にしたものである。Embodiments of the present invention will be described below with reference to the drawings. First
1 is a sectional view showing an embodiment of the present invention, in which a supercharger and a supercharging pressure control valve are integrated.
図において、(31)は過給機のハウジング、(32)は
ハウジング(31)の内部に回動自在に設けられたファ
ン、(33)はハウジング(31)の内部に形成され吸入空
気の通る吸気通路、(34),(35)はハウジング(31)
の内部に形成された第1および第2のバイパス通路であ
る。このうち第1のバイパス通路(34)はファン(32)
の下流側、すなわち外周側に設けられ、第2のバイパス
通路(35)はファンの上流側、すなわち内周側に設けら
れている。In the figure, (31) is a housing of a supercharger, (32) is a fan rotatably provided inside the housing (31), (33) is formed inside the housing (31), and intake air passes through. Intake passage, (34), (35) are housing (31)
And the first and second bypass passages formed inside. Of these, the first bypass passage (34) is the fan (32)
Is provided on the downstream side, that is, on the outer peripheral side, and the second bypass passage (35) is provided on the upstream side, that is, the inner peripheral side of the fan.
(36)はボルト(37)を介してハウジング(31)に取
り付けられたケース、(38)はケース(36)とハウジン
グ(31)との間に挟持され両者間(36),(31)をシー
ルするゴム製のダイヤフラム、(39)は第2のバイパス
通路(35)の端面に形成された弁座部で、この弁座部
(39)とダイヤフラム(38)の取り付けられたハウジン
グ(31)の面とは同一平面状に位置している。(40)は
ダイヤフラム(38)に焼き付けされた樹脂製の弁体、
(41)は弁座部(39)に当接し第2のバイパス通路(3
5)を閉じるシール部、(42)はケース(36)内のサポ
ート(43)とホルダー(44)との間に縮設されたスプリ
ング、(45)はケース(36)の上部に設けられスロット
ル弁(図の紙面垂直方向の奥側に配置)の下流側と連通
したニップルである。Reference numeral (36) is a case attached to the housing (31) via a bolt (37), and (38) is sandwiched between the case (36) and the housing (31) so that the two (36), (31) are connected to each other. A rubber diaphragm (39) for sealing is a valve seat portion formed on an end surface of the second bypass passage (35), and a housing (31) in which the valve seat portion (39) and the diaphragm (38) are attached. The surface is located on the same plane. (40) is a valve element made of resin baked on the diaphragm (38),
(41) abuts on the valve seat portion (39), and the second bypass passage (3
5) Seal part for closing, (42) is a spring compressed between the support (43) and the holder (44) in the case (36), and (45) is a throttle provided on the upper part of the case (36). It is a nipple that communicates with the downstream side of the valve (located on the far side in the direction perpendicular to the paper surface of the figure).
次に、上記のように構成された過給圧制御弁装置の動
作について説明する。自動車の中および高負荷運転状態
においては、スロットル弁は全開状態に近く、また過給
機のファン(32)の過給効果によって第1のバイパス通
路(34)とスロットル弁の下流側の吸気通路はともに高
正圧状態にあり、ダイヤフラム(38)の両側空間内は同
正圧である。その結果、ダイヤフラム(38)にはスプリ
ング(42)による弁体(40)の閉弁方向の付勢力が働
き、シール部(41)が弁座部(39)に当接し弁体(40)
は完全閉弁状態にある。Next, the operation of the supercharging pressure control valve device configured as described above will be described. In the middle or high load operation state of the vehicle, the throttle valve is close to the fully open state, and due to the supercharging effect of the fan (32) of the supercharger, the first bypass passage (34) and the intake passage downstream of the throttle valve. Are in a high positive pressure state, and the positive pressure is the same in the spaces on both sides of the diaphragm (38). As a result, the diaphragm (38) is urged by the spring (42) in the valve closing direction of the valve body (40), and the seal portion (41) abuts against the valve seat portion (39), so that the valve body (40).
Is completely closed.
上記中および高負荷運転状態からスロットル弁が急閉
弁する減速運転に変化すると、スロットル弁の下流側の
吸気通路の圧力は高負圧に変化してケース(36)内は高
負圧となり、またファン(32)が回転している限り第1
のバイパス通路(34)内は昇圧し高正圧となり、その結
果、弁体(40)はスプリング(42)の弾発力に逆らって
開弁し、加圧空気は第1のバイパス通路(34)と第2の
バイパス通路(35)との間を循環し、スロットル弁の上
流側の昇圧は防止される。When the medium and high load operation states are changed to the deceleration operation in which the throttle valve is rapidly closed, the pressure in the intake passage on the downstream side of the throttle valve changes to a high negative pressure, and the inside of the case (36) becomes a high negative pressure. Also, as long as the fan (32) is rotating, the first
Of the bypass passage (34) is pressurized to a high positive pressure, and as a result, the valve body (40) opens against the elastic force of the spring (42) and the pressurized air receives the first bypass passage (34). ) And the second bypass passage (35) to prevent pressure increase on the upstream side of the throttle valve.
以上説明したように、この発明の過給圧制御弁装置
は、内部にファンが回転自在に設けられたハウジング
と、このハウジングにダイヤフラムを介して取り付けら
れたケースと、前記ハウジングの内部に形成され前記フ
ァンの回転により吸入された加圧空気の通路となる吸気
通路と、ハウジングの内部に形成され前記吸気通路と連
通した第1および第2のバイパス通路と、前記ダイヤフ
ラムに取り付けられダイヤフラムの応動により前記第2
のバイパス通路を開口して前記第1のバイパス通路と第
2のバイパス通路とを連通する弁体とを備えたことによ
り、過給機と過給圧制御弁との一体化による小型化、お
よび過給機と過給圧制御弁との間に必要とした配管の削
減による製作コストの低減化を図ることができるという
効果がある。また、ダイヤフラムは、弁体を動作させる
とともに、過給機のハウジングと過給圧制御弁のケース
との間をシールする作用を兼ねており、効率よく利用さ
れているという効果もある。さらにファンの下流側に第
1のバイパス通路を設けることによりハウジングのダイ
ヤフラム側にファン下流側からの加圧空気が流通するよ
うにしたので、ダイヤフラムが急減速時等に反転してし
まうことが防がれる。As described above, the boost pressure control valve device of the present invention is formed inside the housing in which the fan is rotatably provided, the case attached to the housing via the diaphragm, and the inside of the housing. An intake passage serving as a passage for the compressed air sucked by the rotation of the fan, first and second bypass passages formed inside the housing and communicating with the intake passage, and a diaphragm attached to the diaphragm to move the diaphragm. The second
And a valve body that communicates the first bypass passage and the second bypass passage with each other by opening the bypass passage of the first bypass passage, thereby reducing the size by integrating the supercharger and the supercharging pressure control valve, and There is an effect that the manufacturing cost can be reduced by reducing the piping required between the supercharger and the supercharging pressure control valve. In addition, the diaphragm operates not only to operate the valve element, but also serves to seal between the housing of the supercharger and the case of the supercharging pressure control valve, and thus is effectively used. Further, by providing the first bypass passage on the downstream side of the fan, the pressurized air from the downstream side of the fan is circulated to the diaphragm side of the housing, so that the diaphragm is prevented from being inverted during sudden deceleration. Get off.
第1図はこの発明の一実施例を示す断面図、第2図は従
来の過給圧制御弁装置の一例を示す断面図である。 図において、(31)はハウジング、(32)はファン、
(33)は吸気通路、(34)は第1のバイパス通路、(3
5)は第2のバイパス通路、(36)はケース、(38)は
ダイヤフラム、(40)は弁体である。FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view showing an example of a conventional supercharging pressure control valve device. In the figure, (31) is a housing, (32) is a fan,
(33) is the intake passage, (34) is the first bypass passage, (3
5) is a second bypass passage, (36) is a case, (38) is a diaphragm, and (40) is a valve body.
Claims (1)
ロットル弁上流側における異常昇圧を抑制する過給圧制
御弁装置において、内部にファンが回転自在に設けられ
たハウジングと、このハウジングにダイヤフラムを介し
て取り付けられたケースと、前記ハウジングの内部に形
成され前記ファンの回転により吸入された加圧空気の通
路となる吸気通路と、ハウジングの内部に形成され前記
吸気通路と連通した第1および第2のバイパス通路と、
前記ダイヤフラムに取り付けられダイヤフラムの応動に
より前記第2のバイパス通路を開口して前記第1のバイ
パス通路と第2のバイパス通路とを連通する弁体とを備
え、前記弁体は、前記ダイヤフラムの中央部に一体に設
けられ、前記ファン上流の吸気通路に連通した第2のバ
イパス通路を内周に設け、前記ファン下流の吸気通路に
連通した第1のバイパス通路を外周に設けたことを特徴
とする過給圧制御弁装置。1. A supercharging pressure control valve device for suppressing abnormal pressurization on the upstream side of a throttle valve, which occurs at the time of deceleration when a throttle valve is closed, in a housing in which a fan is rotatably provided, and a diaphragm provided in this housing. Attached to the housing, an intake passage formed inside the housing and serving as a passage for pressurized air sucked by rotation of the fan, and first and second communication passages formed inside the housing and communicating with the intake passage. The bypass passage of
A valve body that is attached to the diaphragm, opens the second bypass passage by the response of the diaphragm, and connects the first bypass passage and the second bypass passage, and the valve body is the center of the diaphragm. A second bypass passage that is provided integrally with the above portion and that communicates with the intake passage upstream of the fan is provided on the inner periphery, and a first bypass passage that communicates with the intake passage downstream of the fan is provided on the outer periphery. Boost pressure control valve device.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1127152A JPH086601B2 (en) | 1989-05-19 | 1989-05-19 | Boost pressure control valve device |
US07/523,531 US5137003A (en) | 1989-05-19 | 1990-05-15 | Supercharged pressure control valve apparatus |
DE199090109544T DE398379T1 (en) | 1989-05-19 | 1990-05-18 | VALVE DEVICE FOR CHARGING PRESSURE CONTROL. |
EP19900109544 EP0398379B1 (en) | 1989-05-19 | 1990-05-18 | Supercharged pressure control valve apparatus |
DE69005357T DE69005357T2 (en) | 1989-05-19 | 1990-05-19 | Valve device for boost pressure control. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1127152A JPH086601B2 (en) | 1989-05-19 | 1989-05-19 | Boost pressure control valve device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02305324A JPH02305324A (en) | 1990-12-18 |
JPH086601B2 true JPH086601B2 (en) | 1996-01-29 |
Family
ID=14952912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1127152A Expired - Lifetime JPH086601B2 (en) | 1989-05-19 | 1989-05-19 | Boost pressure control valve device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH086601B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100963452B1 (en) * | 2006-08-10 | 2010-06-17 | 미츠비시 쥬고교 가부시키가이샤 | Multistage exhaust turbocharger |
US8973891B2 (en) | 2010-03-18 | 2015-03-10 | Mitsubishi Electric Corporation | Air bypass valve device |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2446146B (en) * | 2007-01-31 | 2009-11-18 | Gm Global Tech Operations Inc | Arrangement of a two stage turbocharger system for an internal combustion engine |
CN102859143A (en) * | 2010-04-27 | 2013-01-02 | 博格华纳公司 | Compressor of an exhaust-gas turbocharger |
JP5953239B2 (en) * | 2013-01-23 | 2016-07-20 | 株式会社オティックス | Compressor housing for supercharger and method for manufacturing the same |
JP5627733B1 (en) * | 2013-05-01 | 2014-11-19 | 三菱電機株式会社 | Wastegate valve control device for internal combustion engine and wastegate valve control method for internal combustion engine |
JP5927729B2 (en) * | 2013-11-06 | 2016-06-01 | 本田技研工業株式会社 | Channel member |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2313734A1 (en) * | 1973-03-20 | 1974-10-03 | Hans Sasserath & Co Kg Rheydt | FITTINGS FOR SHUT-OFF OF A PIPE DEPENDING ON THE FLOW |
-
1989
- 1989-05-19 JP JP1127152A patent/JPH086601B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100963452B1 (en) * | 2006-08-10 | 2010-06-17 | 미츠비시 쥬고교 가부시키가이샤 | Multistage exhaust turbocharger |
US8973891B2 (en) | 2010-03-18 | 2015-03-10 | Mitsubishi Electric Corporation | Air bypass valve device |
DE112010005398B4 (en) * | 2010-03-18 | 2015-06-11 | Mitsubishi Electric Corporation | Air bypass valve device |
Also Published As
Publication number | Publication date |
---|---|
JPH02305324A (en) | 1990-12-18 |
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