JPS6217324A - Intake air controller for internal-combustion engine - Google Patents

Intake air controller for internal-combustion engine

Info

Publication number
JPS6217324A
JPS6217324A JP15767085A JP15767085A JPS6217324A JP S6217324 A JPS6217324 A JP S6217324A JP 15767085 A JP15767085 A JP 15767085A JP 15767085 A JP15767085 A JP 15767085A JP S6217324 A JPS6217324 A JP S6217324A
Authority
JP
Japan
Prior art keywords
valve
throttle
valve shaft
throttle valve
coil spring
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.)
Granted
Application number
JP15767085A
Other languages
Japanese (ja)
Other versions
JPH036336B2 (en
Inventor
Masayuki Ueda
正之 上田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP15767085A priority Critical patent/JPS6217324A/en
Publication of JPS6217324A publication Critical patent/JPS6217324A/en
Publication of JPH036336B2 publication Critical patent/JPH036336B2/ja
Granted legal-status Critical Current

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  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

PURPOSE:To prevent the throttle valve sticking by forming a throttle valve which has an external diameter in the direction of the valve shaft thereof shorter than the internal diameter of an intake passage and mounting both springs on the valve shaft, one sprint energizing the throttle valve axially to open it an d the other spring energizing said valve in the opposite direction. CONSTITUTION:Each of throttle valves 3 is cut away at trifle portions on the external peripheral part thereof which is adjacent to a valve shaft 4 to form a gap delta1 between the valve 3 and the internal face of an intake port 2. On one side of the valve shaft 4, a torsion coil spring 11 which has the opposing ends thereof engaged to both an arm 7 and a throttle body 1 is wound around the valve shaft 4 so that the throttle valve 3 can be constantly energized to be closed and the valve shaft can be pulled out toward a spring 11. On the other side of the valve shaft 4 it has staged parts 4a and 4b. Washers 18 and 19 are engaged on said parts together with wave washer 20 having a higher resilient force than the coil spring 11 interposed between said washers. A difference between expanding volumes of both the body 1 and the valve shaft 4 at high temperature may then be dissipated by the gaps delta1 and delta2 and the wave washer 20.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は内燃機関の吸気流量を調節するための吸気制御
装置に関し、特に、燃料噴射装置、或いは気化器に於け
る吸気道内に蝶型スロットル弁を備えてなる内燃機関用
吸気制御装置に関する。
[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an intake air control device for regulating the intake air flow rate of an internal combustion engine, and in particular, to a butterfly-shaped throttle in the intake passage of a fuel injection device or a carburetor. The present invention relates to an intake control device for an internal combustion engine that includes a valve.

〈従来の技術〉 上記のような吸気制御装置に於ては、吸気道をバイパス
するアイドル運転用の空気通路を設け、従って、スロッ
トル弁がアイドル時に於て全開状態となる構造にする場
合がある。この場合、スロットル弁周縁部と、その周縁
部に対向する吸気道内壁面との間隙からの吸気洩れを、
可及的に抑制するのが望ましいことが知られている。こ
れは、エンジンのアイドル運転状態が、このような吸気
洩れの大小による影響を強く受け、エンジンのアイドル
運転状態を安定化させるためには、吸気洩れを極力抑え
ることが望ましいためである。
<Prior Art> In the above-mentioned intake control device, an air passage for idling operation that bypasses the intake passage is provided, and therefore, the throttle valve is sometimes structured to be in a fully open state during idling. . In this case, intake air leakage from the gap between the peripheral edge of the throttle valve and the inner wall surface of the intake duct opposite to the peripheral edge of the throttle valve is
It is known that it is desirable to suppress this as much as possible. This is because the idling operating state of the engine is strongly affected by the magnitude of such intake air leakage, and in order to stabilize the idling operating state of the engine, it is desirable to suppress intake air leakage as much as possible.

吸気洩れを抑制するためには、スロットル弁の外周部と
吸気道の内周面との間の嵌め合いの精度を高め、スロッ
トル弁の中心と吸気道の中心とを正確に合致させた上で
、弁軸の軸線方向の変位を規制する必要がある。
In order to suppress intake air leakage, it is necessary to increase the precision of the fit between the outer circumference of the throttle valve and the inner circumference of the intake passage, and to ensure that the center of the throttle valve and the center of the intake passage are aligned accurately. , it is necessary to restrict the displacement of the valve stem in the axial direction.

〈発明が解決しようとする問題点〉 しかしながら、実際には製作上の公差、或いは摩耗によ
り、スロットル弁と吸気道の内周面とが十分に密着せず
に吸気洩れを発生したり、或いはスロットル弁の外周部
と吸気道の内周部とが膠着してスロットル弁の作動が円
滑に行なわれないなどの不都合が生じ易い。また、吸気
制御装置本体、弁軸及びスロットル弁はそれぞれ異なる
材質で製作されており、熱膨張率の差も考慮に入れた場
合、常に円滑なスロットル弁の作動を確保するためには
、何らかの逃げ手段が必要である。
<Problems to be Solved by the Invention> However, in reality, due to manufacturing tolerances or wear, the throttle valve and the inner peripheral surface of the intake passage do not come into close contact with each other, causing intake air leakage, or The outer periphery of the valve and the inner periphery of the intake passage tend to stick together, resulting in problems such as difficulty in smooth operation of the throttle valve. In addition, the main body of the intake control device, the valve stem, and the throttle valve are each made of different materials, and taking into consideration the difference in thermal expansion coefficient, it is necessary to provide some kind of escape in order to ensure smooth throttle valve operation at all times. A means is necessary.

このような従来技術の問題点に鑑み、本発明の主な目的
は、スロットル弁の外周部と吸気道の内周面との当接が
円滑に行なわれ、しかも温度変化により部材が熱膨張し
た場合にも、スロットル弁が膠着することのない、改良
された内燃機関用吸気制御装置を提供することにある。
In view of these problems in the prior art, the main object of the present invention is to ensure smooth contact between the outer circumferential portion of the throttle valve and the inner circumferential surface of the intake passage, and to prevent the members from thermally expanding due to temperature changes. An object of the present invention is to provide an improved air intake control device for an internal combustion engine in which a throttle valve does not become stuck even when the throttle valve is stuck.

〈問題点を解決するための手段〉 このような目的は、本発明によれば、装置本体を連通ず
る吸気通路と、該通路を開閉する蝶型スロットル弁と、
該スロットル弁の弁軸に係着して前記絞り弁を閉弁方向
かつ軸線方向に付勢する捩りコイルばねと゛を有する内
燃機関用吸気制御装置であって、前記スロットル弁の弁
軸方向の外径寸法が前記吸気通路の弁軸方向の内径寸法
よりも僅かに小ざくなるような寸法差をもって前記絞り
弁と前記吸気通路とが形成され、前記弁軸が前記寸法差
に対応して軸線方向に沿って変位可能なるように装置本
体に軸支され、前記捩りコイルばねによる軸線方向付勢
力よりも大にして対向する向きの付勢力を有するばね部
材が前記弁軸に備えられることを特徴とする内燃機関用
吸気制御装置を提供することにより達成される。
<Means for Solving the Problems> According to the present invention, such an objective is to provide an intake passage communicating with the main body of the device, a butterfly-shaped throttle valve that opens and closes the passage,
An intake control device for an internal combustion engine, comprising a torsion coil spring that is engaged with a valve shaft of the throttle valve and urges the throttle valve in the valve closing direction and in the axial direction, The throttle valve and the intake passage are formed with a dimensional difference such that the diameter dimension is slightly smaller than the inner diameter dimension in the valve axis direction of the intake passage, and the valve axis is slightly smaller in the axial direction in accordance with the dimensional difference. The valve shaft is provided with a spring member that is pivotally supported on the device body so as to be able to be displaced along the valve shaft, and has a biasing force in an opposite direction that is greater than the biasing force in the axial direction of the torsion coil spring. This is achieved by providing an intake control device for an internal combustion engine that achieves the following.

〈作用〉 このようにすれば、通常は捩りコイルばねの付勢力によ
り吸気道の中心とスロットル弁の中心とが合致するよう
に位置決めがなされ、熱膨張により過大な軸方向応力が
弁軸に作用した場合には、前記した捩りコイルばねとは
反対方向に付勢するばね部材が、その応力を吸収するよ
うに変位する。
<Function> In this way, the center of the intake passage and the center of the throttle valve are normally aligned with each other due to the biasing force of the torsion coil spring, and excessive axial stress is applied to the valve shaft due to thermal expansion. In this case, the spring member, which is biased in the opposite direction to the torsion coil spring described above, is displaced so as to absorb the stress.

しかも吸気道内径とスロットル弁外径とが、弁軸方向に
成るクリアランスを有していることから、吸気道とスロ
ットル弁との膠着を回避し得る。
Moreover, since the inner diameter of the intake passage and the outer diameter of the throttle valve have a clearance in the valve axis direction, it is possible to avoid sticking between the intake passage and the throttle valve.

〈実施例〉 以下、本発明の好適実施例を添付の図面について詳しく
説明する。
<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

第1図は本発明が適用される燃料噴射装置付内燃機関に
用いられる、4連型スロツトルボデイを示しており、略
同−構造を有する2連型スロツトルボデイが2基連結さ
れている。
FIG. 1 shows a four-unit throttle body used in an internal combustion engine with a fuel injection device to which the present invention is applied, in which two two-unit throttle bodies having substantially the same structure are connected.

第2図を併せて参照して、スロットルボディ本体1には
、水平方向を向く吸気道2が郭定されており、該吸気道
を開閉するべく蝶型絞り弁からなるスロットル弁3が、
弁軸4により回動可能なるように軸支されている。また
、本体1にはアイドル運転の制御などを目的とする、バ
イパス通路5が設けられており、更に、エンジンに接続
する側の面には、シールリング6が介装されている。
Referring also to FIG. 2, the throttle body main body 1 is defined with an intake passage 2 that faces in the horizontal direction, and a throttle valve 3 consisting of a butterfly-shaped throttle valve opens and closes the intake passage.
It is rotatably supported by a valve shaft 4. Further, the main body 1 is provided with a bypass passage 5 for the purpose of controlling idling operation, etc., and furthermore, a seal ring 6 is interposed on the surface connected to the engine.

直列に連結された両スロットルボディ本体1より外側に
突出する弁軸4の互いに対向する一端部には、互いに係
合するアーム7が固着されており、一方のアームの他端
部に固着されるフォロワ8と、スロットルボディ本体1
に回動自在に枢支されたカム9とが係合している。そし
て図示されないコントロールケーブルを牽引することに
より、上記したカム9が回動し、両スロットル弁が連動
し得るようにされている。尚、両スロットル弁の開度バ
ランスは、両アーム7の係合部に螺着された調整ねじ1
0を用いて行なわれる。
Arms 7 that engage with each other are fixed to mutually opposing ends of valve shafts 4 that protrude outward from both throttle bodies 1 that are connected in series, and are fixed to the other end of one of the arms. Follower 8 and throttle body body 1
A cam 9 rotatably supported on the cam 9 is engaged with the cam 9. By pulling a control cable (not shown), the above-mentioned cam 9 is rotated, so that both throttle valves can be interlocked. The opening balance of both throttle valves is controlled by an adjusting screw 1 screwed onto the engaging portion of both arms 7.
This is done using 0.

弁軸4には、両アーム7と本体1とに端部を係着された
捩りコイルばね11が巻装され、スロットル弁3を常時
閉弁方向に付勢すると同時に、弁軸をこのコイルばね1
1の側に引出す向きに弾発付勢している。
A torsion coil spring 11 whose ends are attached to both arms 7 and the main body 1 is wound around the valve shaft 4, and the coil spring 11 always biases the throttle valve 3 in the valve closing direction. 1
It is elastically biased in the direction of pulling out to the 1 side.

また一方のアーム7には、捩りコイルばね11よりも細
径の捩りコイルばね12により捩り付勢されたリンク部
材13が枢着され、このリンク部材13を図示されない
ダッシュポットなどに連結することにより、スロットル
弁3が急激に閉弁しようとする運動を緩衝するようにし
ている。また、捩りコイルばね12は、ダッシュポット
の戻し作用を行なうものである。
Further, a link member 13 which is torsionally biased by a torsion coil spring 12 having a smaller diameter than the torsion coil spring 11 is pivotally attached to one arm 7, and this link member 13 can be connected to a dashpot (not shown) or the like. , the throttle valve 3 is designed to buffer the movement of the throttle valve 3 to suddenly close. Further, the torsion coil spring 12 functions to return the dashpot.

弁軸4の第1図に於ける左側の端部は、弁開度センサ1
4の入力軸に係合している。この弁開度センサ14は、
例えばポテンシオメータなどからなり、例えば図示され
ていない燃料噴射装置の制御ユニットに、所要の弁開度
信号を供給し得る。
The left end of the valve shaft 4 in FIG. 1 is connected to the valve opening sensor 1.
It is engaged with the input shaft of No. 4. This valve opening sensor 14 is
For example, it is composed of a potentiometer or the like, and can supply a required valve opening signal to, for example, a control unit of a fuel injection device (not shown).

スロットルボディ本体1には、エンジンのシリンダヘッ
ドからの冷却水を導入する構造が設けられている。これ
は、冷却水を冷却水人口15から導入し、両スロットル
ボディをホース16を用いて連結し、冷却水出口17か
ら排出することにより両スロットルボディ本体1を加熱
し、そのアイシングなどを防止するものである。
The throttle body main body 1 is provided with a structure for introducing cooling water from a cylinder head of an engine. This introduces cooling water from a cooling water port 15, connects both throttle bodies using a hose 16, and discharges it from a cooling water outlet 17 to heat both throttle body bodies 1 and prevent icing etc. It is something.

第3図に示すように、スロットル弁3の弁軸4と隣接す
る外周端部は、同部分に於ける吸気道2の内面と61で
示されるクリアランスを有するように僅かに切除されて
いる。また、捩りコイルばね11側の本体端面1aと、
アーム7の対向端面との間には、前記したクリアランス
δ1よりも僅かに大きくて良いクリアランスδ2が設け
られている。
As shown in FIG. 3, the outer circumferential end of the throttle valve 3 adjacent to the valve shaft 4 is slightly cut away so as to have a clearance 61 with the inner surface of the intake passage 2 in the same area. Further, the main body end surface 1a on the side of the torsion coil spring 11,
A clearance δ2, which may be slightly larger than the above-mentioned clearance δ1, is provided between the arm 7 and the opposing end surface.

弁軸4に於ける捩りコイルばね11が巻装される側とは
反対側の端部には、第3図及び第4図に示すように2段
階に縮径された段部4a、4bが形成されており、両段
部に係合するワッシャ18.19が嵌着されている。こ
れら両ワッシャ18.19の間には、捩りコイルばね1
1の軸線方向弾発力よりも大きな弾発力を有するウェー
ブワッシャ20が挟設され、更に軸端には、ナツト21
がスプリングワッシャ22を介して螺着されている。
At the end of the valve shaft 4 opposite to the side on which the torsion coil spring 11 is wound, there are step portions 4a and 4b whose diameters are reduced in two steps, as shown in FIGS. 3 and 4. A washer 18, 19 is fitted which engages both steps. Between these washers 18 and 19 is a torsion coil spring 1.
A wave washer 20 having a larger elastic force in the axial direction than the elastic force in the axial direction of the wave washer 20 is sandwiched, and a nut 21
is screwed through a spring washer 22.

次に、以上のような構成からなる本発明の作用について
、特に第3図、即ち第1図に於ける右側のスロットルボ
ディ本体1について説明する。
Next, the operation of the present invention constructed as described above will be explained, particularly regarding the throttle body main body 1 on the right side in FIG. 3, ie, FIG. 1.

先ず常温下に於て吸気道2の中心とスロットル弁3の中
心とが合致するように、スロットル弁3がスロットルボ
ディ本体1に組付けられるが、このとき、第3図に於け
る右側の本体端面1bとワッシャ18との間には、スラ
ストワッシャ23が挟設されて隙間なく組付けられてい
る。
First, the throttle valve 3 is assembled to the throttle body main body 1 at room temperature so that the center of the intake passage 2 and the center of the throttle valve 3 match. At this time, the right main body in FIG. A thrust washer 23 is sandwiched between the end surface 1b and the washer 18 and assembled without any gap.

一方アーム7の側は、捩りコイルばね11の軸線方向弾
発力が作用しているが、右端面1bの側に装着されたウ
ェーブワッシャ20の弾発力の方がより強大であること
から、ワッシャ18及びスラストワッシャ23がストッ
パとして作用し、弁−軸4の軸線方向についての位置決
めがなされる。
On the other hand, on the arm 7 side, the axial elastic force of the torsion coil spring 11 is acting, but since the elastic force of the wave washer 20 attached to the right end surface 1b is stronger, The washer 18 and the thrust washer 23 act as stoppers to position the valve-shaft 4 in the axial direction.

このような状態に於て、捩りコイルばね11及びウェー
ブワッシャ20の弾発力に抗する軸線方向力を弁軸4に
加えれば、クリアランスδ1だけ弁軸が変位し得ること
になる。
In this state, if an axial force that resists the elastic force of the torsion coil spring 11 and the wave washer 20 is applied to the valve shaft 4, the valve shaft can be displaced by the clearance δ1.

次に高温時には、一般にスロットルボディ本体1はアル
ミニウム材が、弁軸材4はステンレス材が用いられるた
め、スロットルボディ本体1の方が膨張率が高い。その
ため第3図に示されるL寸法が弁軸4に比して本体1側
の方がより大きく増大するが、クリアランスδ1、δ2
及びウェーブワッシャ20の変形により、このような膨
張差を吸収しくqる。
Next, at high temperatures, since the throttle body body 1 is generally made of aluminum and the valve shaft material 4 is made of stainless steel, the throttle body body 1 has a higher expansion coefficient. Therefore, the L dimension shown in FIG. 3 increases more on the main body 1 side than on the valve stem 4, but the clearances δ1, δ2
By deforming the wave washer 20, this difference in expansion can be absorbed.

尚、上記実施例に於て用いたウェーブワッシャ20は、
コイルばねなど他のばね部材を用いても良く、いずれに
せよ弾発力をスロットル弁の吸気道内面への食込み面圧
よりも小さく設定しておけば良い。
Note that the wave washer 20 used in the above example is as follows:
Other spring members such as coil springs may be used, and in any case, the elastic force may be set to be smaller than the surface pressure of the throttle valve biting into the inner surface of the intake passage.

また本発明は、上記実施例に限らず、1ボア型のスロッ
トルボディ、或いは気化器のスロットル弁にも好適に応
用可能である。
Furthermore, the present invention is not limited to the above-mentioned embodiments, but can also be suitably applied to a one-bore throttle body or a throttle valve of a carburetor.

〈発明の効果〉 このように、本発明によれば、極めて簡単な構成をもっ
て、吸気制御装置本体と弁軸との熱膨張差を吸収し得る
ため、高温下でのスロットル弁の膠着、或いは戻り不良
を防止し、吸気制御装置の信頼性を向上する上で多大な
効果を奏することができる。
<Effects of the Invention> As described above, according to the present invention, the difference in thermal expansion between the intake control device main body and the valve stem can be absorbed with an extremely simple configuration, so that it is possible to prevent the throttle valve from sticking or returning at high temperatures. This can have great effects in preventing defects and improving the reliability of the intake control device.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はスロットルボディ本体の全体を示す底面図でお
る。 第2図は第1図の■−■線に沿う断面図でおる。 第3図は第2図の■−■線に沿う断面図である。 第4図は第3図の要部を示す部分的な拡大図である。 1・・・スロットルボディ本体 1a、1b・・・端面  2・・・吸気道3・・・スロ
ットル弁  4・・・弁軸4a、4b・・・段部  5
・・・バイパス通路6・・・シールリング  7・・・
アーム8・・・フォロワ    9・・・カム10・・
・調整ねじ 11.12・・・捩りコイルばね 13・・・リンク部材  14・・・弁開度センサ15
・・・冷却水入口  16・・・ホース17・・・冷却
水出口  18.19・・・ワッシャ20・・・ウェー
ブワッシャ 21・・・ナツト    22・・・スプリングワッシ
ャ23・・・スラストワッシャ 特 許 出 願 人 本田技研工業株式会社代   理
   人  弁理士 大 島 陽 −第3図 第°4図
FIG. 1 is a bottom view showing the entire throttle body. FIG. 2 is a sectional view taken along the line ■--■ in FIG. 1. FIG. 3 is a sectional view taken along the line ■-■ in FIG. 2. FIG. 4 is a partially enlarged view showing the main part of FIG. 3. 1... Throttle body body 1a, 1b... End face 2... Intake path 3... Throttle valve 4... Valve shaft 4a, 4b... Step portion 5
...Bypass passage 6...Seal ring 7...
Arm 8...Follower 9...Cam 10...
・Adjusting screw 11.12...Torsion coil spring 13...Link member 14...Valve opening sensor 15
...Cooling water inlet 16...Hose 17...Cooling water outlet 18.19...Washer 20...Wave washer 21...Nut 22...Spring washer 23...Thrust washer patent Applicant: Honda Motor Co., Ltd. Representative: Patent Attorney Yo Oshima - Figure 3 °4

Claims (1)

【特許請求の範囲】 装置本体を連通する吸気通路と、該通路を開閉する蝶型
スロットル弁と、該スロットル弁の弁軸に係着して前記
絞り弁を閉弁方向かつ軸線方向に付勢する捩りコイルば
ねとを有する内燃機関用吸気制御装置であって、 前記スロットル弁の弁軸方向の外径寸法が前記吸気通路
の弁軸方向の内径寸法より僅かに小さくなるような寸法
差をもつて前記絞り弁と前記吸気通路とが形成され、 前記弁軸が前記寸法差に対応して軸線方向に沿って変位
可能なるように装置本体に軸支され、前記捩りコイルば
ねによる軸線方向付勢力よりも大にして対向する向きの
付勢力を有するばね部材が前記弁軸に備えられることを
特徴とする内燃機関用吸気制御装置。
[Scope of Claims] An intake passage that communicates with the main body of the device, a butterfly-shaped throttle valve that opens and closes the passage, and a butterfly-shaped throttle valve that is engaged with the valve shaft of the throttle valve to bias the throttle valve in the valve-closing direction and in the axial direction. An intake control device for an internal combustion engine, comprising a torsion coil spring, the throttle valve having a dimensional difference such that an outer diameter dimension in the valve axial direction is slightly smaller than an inner diameter dimension in the valve axial direction of the intake passage. the throttle valve and the intake passage are formed, the valve shaft is pivotally supported by the device main body so as to be displaceable along the axial direction in accordance with the dimensional difference, and the axial biasing force by the torsion coil spring is applied. An intake air control device for an internal combustion engine, characterized in that the valve shaft is provided with a spring member having a biasing force larger than that in opposite directions.
JP15767085A 1985-07-17 1985-07-17 Intake air controller for internal-combustion engine Granted JPS6217324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15767085A JPS6217324A (en) 1985-07-17 1985-07-17 Intake air controller for internal-combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15767085A JPS6217324A (en) 1985-07-17 1985-07-17 Intake air controller for internal-combustion engine

Publications (2)

Publication Number Publication Date
JPS6217324A true JPS6217324A (en) 1987-01-26
JPH036336B2 JPH036336B2 (en) 1991-01-29

Family

ID=15654812

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15767085A Granted JPS6217324A (en) 1985-07-17 1985-07-17 Intake air controller for internal-combustion engine

Country Status (1)

Country Link
JP (1) JPS6217324A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63277828A (en) * 1987-05-11 1988-11-15 Hitachi Ltd Multiple throttle mechanism of internal combustion engine
EP2052173A1 (en) * 2006-08-14 2009-04-29 BorgWarner Inc. Low force anti sticking throttle valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63277828A (en) * 1987-05-11 1988-11-15 Hitachi Ltd Multiple throttle mechanism of internal combustion engine
JPH0573904B2 (en) * 1987-05-11 1993-10-15 Hitachi Ltd
EP2052173A1 (en) * 2006-08-14 2009-04-29 BorgWarner Inc. Low force anti sticking throttle valve
JP2010501051A (en) * 2006-08-14 2010-01-14 ボーグワーナー・インコーポレーテッド Anti-sticking throttle valve for weak force
EP2052173A4 (en) * 2006-08-14 2013-03-27 Borgwarner Inc Low force anti sticking throttle valve
KR101402265B1 (en) * 2006-08-14 2014-06-02 보르그워너 인코퍼레이티드 Low force anti sticking throttle valve

Also Published As

Publication number Publication date
JPH036336B2 (en) 1991-01-29

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