JP2698793B2 - Engine intake throttle valve - Google Patents
Engine intake throttle valveInfo
- Publication number
- JP2698793B2 JP2698793B2 JP62066586A JP6658687A JP2698793B2 JP 2698793 B2 JP2698793 B2 JP 2698793B2 JP 62066586 A JP62066586 A JP 62066586A JP 6658687 A JP6658687 A JP 6658687A JP 2698793 B2 JP2698793 B2 JP 2698793B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve plate
- valve shaft
- fully closed
- outer peripheral
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1005—Details of the flap
- F02D9/101—Special flap shapes, ribs, bores or the like
- F02D9/1015—Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Lift Valve (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はエンジンの吸気量を制御するための絞り弁に
関するものであつて，主に車両用エンジンに利用され
る。
従来の技術
エンジン回転速度を制御するため，液体燃料のための
気化器，気体燃料のため混合器，燃料噴射方式における
スロットルボデイに吸気量を増減制御する絞り弁を設け
ることは周知である。
絞り弁は一般に運転者の足または手により操作される
弁軸に円形の弁体を取付けて構成され，弁軸は吸気通路
の中心を横切って配置され弁体は全閉から全開の間で任
意に回動させられて吸気量を制御する。即ち，弁軸の回
転角度に応じて吸気量が変化するものであるが，エンジ
ンが排気量に対して吸気通路径が大きい場合には絞り弁
をアイドル位置から少し開いて車両を発進させたとき弁
軸回転角度に対する吸気量増加の割合が大きいので必要
以上にエンジン回転速度が高くなる。従つて，絞り弁の
低開度域では弁軸回転角度に対する吸気量増加の割合を
小さくするのが好ましいが，吸気通路径は再高出力によ
つて決定するので一定以上に小さくすることはできな
い。そこで，絞り弁の全閉角度，即ち吸気通路の軸線に
直角な面に対する弁板の角度を小さくすることによつて
吸気増加の割合を小さくすることが考えられているが，
全閉角度を小さくすると吸気通路壁に弁板が喰付いて作
動不良の原因となる。特に，吸入負圧による曲がりをな
くすため厚肉を作つて剛性化した弁板の場合は，弁軸と
重なつた個所に隣接して喰付きを生じやすい。
第８図は喰付きを説明する図であつて，吸気通路の中
心軸線Ｘ−Ｘに直角であつて弁軸Ｓの中心を通る面Ｌ−
Ｌを弁板Ｖの閉弁方向回動時に回動方向へ向つて前方の
端縁が通過したとき，この通過部分に喰付きを生じるの
である。この喰付き区間Ａ〜ＢおよびＣ〜Ｄは弁軸Ｓの
直径，弁板Ｖの厚さt,全閉角度θによつて変化するもの
であり,tが大きい程，またθが小さい程Ａ〜ＢおよびＣ
〜Ｄが長くなることが図から理解される。
その対策として，例えば第9,10図に示すように弁板Ｖ
の弁軸Ｓと重なる側の周縁部分において下流側に外側周
面へ開放したくぼみ部Ｇを切削などにより弁軸Ｓとの重
なり部分を通つて設け，第８図の区間Ａ〜Ｂが面Ｌ−Ｌ
よりも上流側となるようにすることが試みられている。
発明が解決しようとする問題点
しかしながら，前記のようにくぼみ部Ｇを設けて弁軸
Ｓと重なる側の周縁部分に逃げを形成すると，全閉位置
において区間Ａ〜Ｂが存在しないためこの部分での喰付
きの発生はなくなるが，薄肉となるため高い吸入負圧に
よつて曲げられる空気漏れ量を増加してアイドル回転速
度が必要以上に高くなり，エンジン騒音，燃料浪費など
の不都合を生じるばかりか，区間Ｃ〜Ｄの喰付きは防止
できない。その対策として周縁部分を両面から切落す
と，更に薄肉となつて空気漏れ量が著しく増加する。
更に，エンジンの排気再循環装置や点火進角装置など
を絞り弁位置に関連して作動させるため，全閉位置附近
に開設した負圧ポートからとり入れた負圧を使用するこ
とが広く実施されているが，弁板が厚肉であると負圧ポ
ートを横切つて上流側または下流側へ移動するのに長い
時間を要し或いは弁板が負圧ポートを塞ぐことがあつて
負圧特性を不連続なものにしやすい。このため前記各装
置の作動不良を招くという不都合を生じる。
そこで本発明は，弁板が剛性を失わないとともに全閉
位置で喰付きの発生や空気漏れ量の増加がなく全閉角度
を小さく設定可能であり，更に負圧ポートから連続特性
の負圧をとり入れさせることができるエンジン用吸気絞
り弁を提供するものである。
問題点を解決するための手段
本発明は，吸気通路を横切って配置される弁軸に取付
けられた弁板の外側周面に沿ってほぼ半円周長の段部が
設けられてこの段部による薄肉部が形成されており，前
記段部は前記弁板外側周面の上流側および下流側の端縁
の内で前記弁板の閉弁方向回動時に前記吸気通路の中心
軸線に直角であって前記弁軸の中心軸線を通る面を通過
する端縁に沿って設けられ、且つ前記弁板の全閉位置に
おいて前記面と弁軸の外側面との交線よりも少し弁軸に
入った部分から外側へ向って延びている構成としたこと
によつて前記問題点を解決するための手段とした。
作用
絞り弁が開いた位置から閉弁するとき，吸気通路の中
心軸線に直角であつて弁軸の中心軸線を通る面を通過す
る端縁は段部によつて弁板に存在しないのでそのまま閉
弁位置まで閉じられる。また，通気通路に開設した負圧
ポートを薄肉部が通過する。
発明の効果
本発明によると，弁軸の中心軸線を通る面を通過する
端縁が段部によつて通過しない位置に後退させられた形
状であるので，弁板の弁軸との重なり部分に隣接した個
所が吸気通路壁に喰付くという現象がなくなるのであ
る。
また，段部の厚さを弁板全閉位置で弁軸の吸気通路中
心軸線に直角な中心面と外側周面との交線よりも少し内
側から段部が出発するように規定したことにより，弁板
が厚肉であつても喰付きを防止できるとともに、段部の
深さを適宜に選定することにより高い吸入負圧による薄
肉部の曲がりを少なくして空気漏れ量の増加を最小限に
とどめてエンジンのアイドル時における騒音や燃料浪費
を防止できるものである。更に，薄肉部が弁軸を挟んで
両側の外側周面に設けられていても弁軸との重なり部分
はごく一部を除いて薄肉化されていないので剛性を失う
ことが少ないと同時にこの部分からの空気漏れが防止さ
れるばかりか，薄肉部はほぼ半円周長に亘つて形成され
ているので全閉角度を充分に小さくして低速回転域での
エンジン運転性の向上を計ることができ，且つ負圧ポー
トがどの位置に開設されていても連続特性の負圧をとり
入れさせることができるものである。
実 施 例
第1,2,3図は本発明の第一実施例を示すものであつ
て，胴体１に形成された吸気通路２の中心を横切つて配
置された弁軸３にその中心軸線を中心とする割溝４が設
けられ，円形の弁板５がこの割溝４に嵌込まれ止ねじ６
によつて固定されている。弁軸３は一般に運転者の足ま
たは手によつて操作され，弁板５を吸気通路２の中心軸
線Ｘ−Ｘと平行な全開位置た全閉位置との間で回動する
ものであり，全開位置から第1,2図時計方向へ回動して
図示の全閉位置に至る。全閉位置で弁板５は中心軸線Ｘ
−Ｘに直角であつて弁軸３の中心軸線を通る面Ｌ−Ｌに
対しθなる全閉角度を有している。
弁板５の外側周面に沿つて上流側および下流側の端縁
を切欠いた段部6,7,8,9が設けられ，この対向する段部
6,7と8,9とによつて弁板５の弁軸３よりも図示右側およ
び左側の外側周面のそれぞれにほぼ半円周長の薄肉部1
0,11が形成されている。段部6,7,8,9は弁軸３の外側周
面の少し内側即ち外側周面と面Ｌ−Ｌとの交線よりも少
し弁軸３に入つた部分から外側へ向つて延びており，切
削加工またはプレス加工によつて作られる。
弁体５が開いた位置から回動して全閉位置に至つたと
き，閉弁回動方向へ向つて前方に位置する弁軸３の右側
部分における薄肉部10の下流側の端縁10aおよび弁軸３
の左側部分における薄肉部11の上流側の端縁11aが面Ｌ
−Ｌを通過しないように薄肉部10,11の厚さ，即ち段部
6,7,8,9の弁板厚み方向の厚さを設定する。
また，弁板５が回動するとき吸気通路２に開設した負
圧ポート12の前方を薄肉部10が通過する。
尚，この実施例の弁板５は両面対称であるので，弁軸
３に組付けるとき方向性を考慮する必要がない。
第4,5図は本発明の第二実施例を示すものであつて，
第一実施例と同様に弁軸３の割溝４に嵌込み固定された
弁板５は，閉弁回動方向へ向つて前方の端縁を切欠いた
段部13,14が設けられ，これらの段部13,14によつて弁板
５の弁軸３よりも図示右側および左側の外側周面のそれ
ぞれにほぼ半円周長の薄肉部15,16が形成されている。
第６図は本発明の第三実施例を示すものであつて，弁
軸３の直径上で切除して形成した切溝17に吸気通路下流
側から弁板５が嵌込み固定されており，閉弁回動方向へ
向つて前方へ位置する端縁の内で閉弁方向回動時に面Ｌ
−Ｌを通過する方，即ち弁軸３の図示右側部分における
弁板５の下流側の端縁を切欠いた段部18が設けられ，こ
の段部18によつて弁板５の右側の外側周面にほぼ半円周
長の薄肉部19が形成されている。
第７図は本発明の第四実施例を示すものであつて，弁
軸３の直径上で切除して形成した切溝20に吸気通路上流
側から弁板５が嵌込み固定されており，吸気通路上流側
の端縁を切欠いた段部21,22が設けられ，これらの段部2
1,22によつて弁板５の弁軸３よりも図示右側および左側
の外側周面のそれぞれにほぼ半円周長の薄肉部23,24が
形成されている。
第二，第三，第四実施例において，弁体５が開いた位
置から回動して全閉位置に至つたとき，第二実施例の薄
肉部15,16の端縁15a,16a,第三実施例の薄肉部19の端縁1
9a,第四実施例の薄肉部24の端縁24aの端縁24aが面Ｌ−
Ｌを通過しないようになつており，全閉時の喰付きが解
消される。
尚、これらの実施例における段部13,14,18,21,22も第
一実施例と同様に弁板５の全閉位置において面Ｌ−Ｌと
弁軸３の外側周面との交線よりも少し弁軸３に入った部
分から外側へ向って延びている。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throttle valve for controlling an intake air amount of an engine, and is mainly used for a vehicle engine. 2. Description of the Related Art It is well known to provide a carburetor for liquid fuel, a mixer for gaseous fuel, and a throttle valve for controlling an increase or decrease of an intake air amount in a throttle body in a fuel injection system in order to control an engine rotation speed. A throttle valve is generally constructed by mounting a circular valve body on a valve shaft operated by the driver's foot or hand, and the valve shaft is arranged across the center of the intake passage, and the valve body can be freely set between fully closed and fully open. To control the amount of intake air. That is, although the intake air amount changes according to the rotation angle of the valve shaft, when the engine has a large intake passage diameter with respect to the exhaust amount, the throttle valve is slightly opened from the idle position to start the vehicle. Since the ratio of the increase in the intake air amount to the valve shaft rotation angle is large, the engine rotation speed becomes higher than necessary. Therefore, in the low opening range of the throttle valve, it is preferable to reduce the rate of increase of the intake air amount with respect to the valve shaft rotation angle, but the intake passage diameter cannot be reduced beyond a certain value because it is determined by the re-high output. . Therefore, it has been considered to reduce the rate of increase of intake air by reducing the fully closed angle of the throttle valve, that is, the angle of the valve plate with respect to a plane perpendicular to the axis of the intake passage.
If the fully closed angle is reduced, the valve plate will bite into the intake passage wall, causing malfunction. In particular, in the case of a valve plate which is made rigid by making a thick wall in order to eliminate bending due to suction negative pressure, biting is likely to occur adjacent to a portion overlapping with the valve shaft. FIG. 8 is a view for explaining biting, and a plane L- which is perpendicular to the central axis XX of the intake passage and passes through the center of the valve shaft S.
When the front edge passes through L in the valve closing direction of the valve plate V in the valve closing direction and passes in the rotation direction, biting occurs at the passing portion. The biting sections A to B and C to D change depending on the diameter of the valve shaft S, the thickness t of the valve plate V, and the full closing angle θ. ~ B and C
It can be seen from the figure that ~ D becomes longer. As a countermeasure, for example, as shown in Figs.
In the peripheral portion on the side overlapping with the valve shaft S, a concave portion G opened to the outer peripheral surface on the downstream side is provided through the overlapping portion with the valve shaft S by cutting or the like, and sections A and B in FIG. -L
Attempts have been made to be more upstream. Problems to be Solved by the Invention However, as described above, when the recess G is provided to form a clearance in the peripheral portion on the side overlapping with the valve shaft S, since the sections A and B do not exist in the fully closed position, the portion is not provided. Although the occurrence of biting is eliminated, the thinner wall increases the amount of air leaked by the high suction negative pressure, increasing the idling speed more than necessary, causing problems such as engine noise and fuel consumption. Or, biting in the sections C to D cannot be prevented. As a countermeasure, if the peripheral portion is cut off from both sides, the thickness becomes thinner and the amount of air leakage increases significantly. Furthermore, in order to operate the exhaust recirculation system and the ignition advance system of the engine in relation to the throttle valve position, it is widely practiced to use a negative pressure taken from a negative pressure port opened near the fully closed position. However, if the valve plate is thick, it takes a long time to move upstream or downstream across the negative pressure port, or the valve plate may block the negative pressure port, resulting in negative pressure characteristics. Easy to make discontinuous. For this reason, there is an inconvenience that the operation of each of the above-described devices is inferior. Therefore, the present invention can reduce the fully closed angle without losing rigidity of the valve plate and without generating biting or increasing the amount of air leakage at the fully closed position. An intake throttle valve for an engine which can be taken in is provided. Means for Solving the Problems The present invention provides a step having a substantially semicircular length along an outer peripheral surface of a valve plate attached to a valve shaft disposed across an intake passage. The stepped portion is formed at right angles to the center axis of the intake passage when the valve plate rotates in the valve closing direction within the upstream and downstream edges of the outer peripheral surface of the valve plate. And is provided along an edge passing through a plane passing through the center axis of the valve shaft, and enters the valve shaft a little more than an intersection line between the surface and the outer surface of the valve shaft at the fully closed position of the valve plate. The structure extends to the outside from the bent portion to solve the above-mentioned problem. Effect When the throttle valve is closed from the open position, the edge that is perpendicular to the central axis of the intake passage and passes through the plane passing through the central axis of the valve shaft is closed by the step because it does not exist on the valve plate. Closed to valve position. In addition, the thin portion passes through the negative pressure port established in the ventilation passage. According to the present invention, since the edge passing through the plane passing through the center axis of the valve shaft is retracted to a position where the edge does not pass through the step, the valve plate has an overlapped portion with the valve shaft. This eliminates the phenomenon that adjacent portions are stuck to the intake passage wall. In addition, the thickness of the step is defined so that the step starts at a position slightly closed from the intersection of the center plane perpendicular to the central axis of the intake passage of the valve shaft and the outer peripheral surface at the fully closed position of the valve plate. Even if the valve plate is thick, biting can be prevented, and by appropriately selecting the depth of the step, the bending of the thin portion due to a high suction negative pressure is reduced, and the increase in air leakage is minimized. It is possible to prevent noise and fuel consumption when the engine is idling. Furthermore, even if a thin portion is provided on the outer peripheral surface on both sides of the valve shaft, the overlap with the valve shaft is not thin except for a very small portion, so there is little loss of rigidity. In addition to preventing air leakage from the engine, the thin-walled portion is formed over a substantially semicircular circumference so that the fully closed angle can be made sufficiently small to improve engine operability in the low-speed rotation range. It is possible to take in a continuous characteristic negative pressure regardless of where the negative pressure port is opened. Embodiments FIGS. 1, 2 and 3 show a first embodiment of the present invention, in which a center axis of a valve shaft 3 is disposed across the center of an intake passage 2 formed in a body 1. FIG. Is provided, and a circular valve plate 5 is fitted into this groove 4 and a set screw 6 is inserted.
Is fixed. The valve shaft 3 is generally operated by the driver's foot or hand, and pivots the valve plate 5 between a fully open position parallel to the central axis XX of the intake passage 2 and a fully closed position. From the fully open position, it rotates clockwise in FIGS. 1 and 2 to reach the fully closed position shown. In the fully closed position, the valve plate 5 has the central axis X
It has a fully closed angle of θ with respect to a plane LL perpendicular to -X and passing through the center axis of the valve shaft 3. Steps 6, 7, 8, and 9 are provided along the outer peripheral surface of the valve plate 5 by cutting the upstream and downstream edges.
The thin portion 1 having a substantially semicircular circumferential length is provided on each of the outer peripheral surfaces on the right and left sides of the valve shaft 3 of the valve plate 5 by the use of 6, 7 and 8, 9 respectively.
0,11 are formed. The step portions 6, 7, 8, 9 extend outward from a portion slightly inside the outer peripheral surface of the valve shaft 3, that is, a portion slightly entering the valve shaft 3 from the intersection line between the outer peripheral surface and the surface LL. It is made by cutting or pressing. When the valve element 5 rotates from the open position to the fully closed position, the downstream edge 10a of the thin portion 10 in the right portion of the valve shaft 3 located forward in the valve closing direction and Valve shaft 3
The edge 11a on the upstream side of the thin portion 11 on the left side of
-The thickness of the thin sections 10, 11 so as not to pass through L, ie the step
Set the thickness of 6, 7, 8, 9 in the valve plate thickness direction. When the valve plate 5 rotates, the thin portion 10 passes in front of the negative pressure port 12 opened in the intake passage 2. Incidentally, since the valve plate 5 of this embodiment is symmetrical on both sides, it is not necessary to consider the directionality when assembling the valve shaft 3. 4 and 5 show a second embodiment of the present invention.
As in the first embodiment, the valve plate 5 fitted and fixed in the split groove 4 of the valve shaft 3 is provided with stepped portions 13 and 14 which are notched at the front edge toward the valve closing rotation direction. Thin portions 15 and 16 having a substantially semicircular circumferential length are formed on the outer peripheral surfaces on the right and left sides of the valve shaft 3 of the valve plate 5 in the figure by the steps 13 and 14, respectively. FIG. 6 shows a third embodiment of the present invention, in which a valve plate 5 is fitted and fixed from a downstream side of an intake passage into a cut groove 17 formed by cutting on the diameter of the valve shaft 3. When the valve is turned in the valve closing direction within the edge located forward in the valve closing direction, the surface L
-L, that is, a stepped portion 18 in which the downstream edge of the valve plate 5 is cut off at the right side portion of the valve shaft 3 in the drawing is provided. A thin portion 19 having a substantially semicircular circumference is formed on the surface. FIG. 7 shows a fourth embodiment of the present invention, in which a valve plate 5 is fitted and fixed from an upstream side of an intake passage into a cut groove 20 formed by cutting on the diameter of the valve shaft 3. Steps 21 and 22 are provided by cutting off the upstream edge of the intake passage.
Thin portions 23 and 24 having a substantially semicircular circumference are formed on the outer peripheral surfaces on the right and left sides of the valve shaft 3 of the valve plate 5 in FIG. In the second, third, and fourth embodiments, when the valve body 5 rotates from the open position to the fully closed position, the edges 15a, 16a of the thin portions 15, 16 of the second embodiment, Edge 1 of thin portion 19 of the third embodiment
9a, the edge 24a of the edge 24a of the thin portion 24 of the fourth embodiment is
L, so that the bite when fully closed is eliminated. In addition, the steps 13, 14, 18, 21 and 22 in these embodiments also have the intersection line between the plane LL and the outer peripheral surface of the valve shaft 3 at the fully closed position of the valve plate 5 as in the first embodiment. It extends outwardly from the portion that has entered the valve shaft 3 slightly.
【図面の簡単な説明】
第１図は本発明の第一実施例の縦断面図，第２図は第１
図の各大部分図，第三図は第１図の平面図，第４図は本
発明の第二実施例の正面図，第５図は第４図の平面図，
第６図，第７図は本発明の第三，第四実施例の正面図，
第８図は喰付きを説明する図，第９図は従来例の正面
図，第10図は第９図の平面図である。
３……弁軸,5……弁板,6,7,8,9,13,14,18,21,22……段
部,10,11,15,16,19,23,24……薄肉部，BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention, and FIG.
3 is a plan view of FIG. 1, FIG. 4 is a front view of a second embodiment of the present invention, FIG. 5 is a plan view of FIG.
6 and 7 are front views of third and fourth embodiments of the present invention,
FIG. 8 is a view for explaining biting, FIG. 9 is a front view of a conventional example, and FIG. 10 is a plan view of FIG. 3 ... Valve stem, 5 ... Valve plate, 6, 7, 8, 9, 13, 14, 18, 21, 22 ... Step, 10, 11, 15, 16, 19, 23, 24 ... Thin wall Department,
Claims (1)
板の外側周面に沿ってほぼ半円周長の段部が設けられて
この段部による薄肉部が形成されており、前記段部は前
記弁板外側周面の上流側および下流側の端縁の内で前記
弁板の閉弁方向回動時に前記吸気通路の中心軸線に直角
であって前記弁軸の中心軸線を通る面を通過する端縁に
沿って設けられ、且つ前記弁板の全閉位置において前記
面と弁軸の外側面との交線よりも少し弁軸に入った部分
から外側へ向って延びていることを特徴とするエンジン
用吸気絞り弁。(57) [Claims] A substantially semicircular step is provided along the outer peripheral surface of a valve plate attached to a valve shaft disposed across the intake path, and a thin portion is formed by the step, and the step is formed. A plane perpendicular to the center axis of the intake passage and passing through the center axis of the valve shaft when the valve plate rotates in the valve closing direction within the upstream and downstream edges of the outer peripheral surface of the valve plate. The valve plate is provided along the passing edge, and extends outward from a portion entering the valve shaft a little more than an intersection line between the surface and the outer surface of the valve shaft in the fully closed position of the valve plate. Characteristic intake throttle valve for engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62066586A JP2698793B2 (en) | 1987-03-20 | 1987-03-20 | Engine intake throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62066586A JP2698793B2 (en) | 1987-03-20 | 1987-03-20 | Engine intake throttle valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63235629A JPS63235629A (en) | 1988-09-30 |
| JP2698793B2 true JP2698793B2 (en) | 1998-01-19 |
Family
ID=13320193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62066586A Expired - Fee Related JP2698793B2 (en) | 1987-03-20 | 1987-03-20 | Engine intake throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2698793B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5035214A (en) * | 1990-02-16 | 1991-07-30 | Siemens Automotive L.P. | Engine throttle blade sealing |
| US5081972A (en) * | 1990-02-16 | 1992-01-21 | Siemens Automotive L.P. | Engine throttle blade sealing |
| US5746177A (en) * | 1996-07-08 | 1998-05-05 | Ford Motor Company | T-slot throttle body shaft |
| JP2001289070A (en) * | 2000-04-05 | 2001-10-19 | Mikuni Corp | Throttle valve |
| DE10240910A1 (en) * | 2002-09-04 | 2004-03-18 | Siemens Ag | Method for closing a butterfly valve casing comprises attaching lower section of flap to shaft, edge sections to this and upper section to all three sections, space between them then being filled with foam |
| CN109707856B (en) * | 2019-02-02 | 2021-07-16 | 联合汽车电子有限公司 | Valve body connecting system and exhaust gas recirculation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6117569U (en) * | 1984-07-05 | 1986-02-01 | エヌオーケー株式会社 | valve device |
-
1987
- 1987-03-20 JP JP62066586A patent/JP2698793B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63235629A (en) | 1988-09-30 |
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