JPS6120820A - Air flowmeter - Google Patents

Air flowmeter

Info

Publication number
JPS6120820A
JPS6120820A JP14288384A JP14288384A JPS6120820A JP S6120820 A JPS6120820 A JP S6120820A JP 14288384 A JP14288384 A JP 14288384A JP 14288384 A JP14288384 A JP 14288384A JP S6120820 A JPS6120820 A JP S6120820A
Authority
JP
Japan
Prior art keywords
air flow
flap
guide member
passage
flow rate
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
Application number
JP14288384A
Other languages
Japanese (ja)
Inventor
Yukio Mori
幸雄 森
Yukio Sawada
行雄 沢田
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.)
Denso Corp
Original Assignee
NipponDenso 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP14288384A priority Critical patent/JPS6120820A/en
Publication of JPS6120820A publication Critical patent/JPS6120820A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/22—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters
    • G01F1/26—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters of the valve type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To enhance the measuring accuracy over the whole area where an inhaling air flow rate varies by arranging at least more than one piece of a guide member for air flow along the air flow inside the air flow passage of the upper stream side of a flap. CONSTITUTION:The guide member 11 for air flow is provided in parallel along the air flow at the entrance side of an air flow passage 2. With the member 11 thereof one part of the air flow is induced to the direction which is along the member 11 at the downstream side of the member 11 and flowed to the direction of a measuring plate 5. When the inhaling air rate is much, the air flow which is induced to the direction which is along the member 11 controls the air flow which is going to approach the center of the passage 2 by a completely closed stopper 9 and the deflection to the central part of the air flow is checked. Therefore, even at the time of the flap 4 being at high opening degrees the air flow is made to control the plate 5 sufficiently and the measuring accuracy can be improved over the whole area where the inhaling air flow rate varies.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、内燃機関への吸入空気流量を測定するエアフ
ローメータに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air flow meter that measures the flow rate of intake air into an internal combustion engine.

（従来の技術） エアフローメータは、内燃機関に用いられる電子制御燃
料噴射装置が燃料噴射パルスを発生するために必要な吸
入空気流量を測定するものであり、吸入空気流量に応じ
た電気信号を発生する。(Prior art) An air flow meter measures the intake air flow rate required for an electronically controlled fuel injection device used in an internal combustion engine to generate a fuel injection pulse, and generates an electrical signal according to the intake air flow rate. do.

かかるエアフローメータの従来例を第２図、第３図、第
４図を参照して説明する。第３図において、ハウジング
１は、内部に断面が四角形の空気流通路２と、この空気
流通路２の一部が外側へ扇状に突出したダンパー室３と
を形成する。フラップ４は２つのプレート（一方がメジ
ヤリフグプレート５．他方がダンパープレート６）が所
定角度をもってシャフト７に結合している。メジャリン
グプレート５は空気流通路２内を、またダンパープレー
ト６はダンパー室３内をシャフト７を中心に回動し、メ
ジャリングプレート５が空気流通路を前閉するとき、ダ
ンパープレート６がダンパー室３の容積を最大にする位
置にある。シャフト７はハウジング１に回転自在に取り
付けられ、かつリターンスプリング（図示せず）によっ
て吸入空気流によるフラップ４の回転方向と逆方向に付
勢されている。A conventional example of such an air flow meter will be explained with reference to FIGS. 2, 3, and 4. In FIG. 3, a housing 1 has an air flow passage 2 having a square cross section and a damper chamber 3 in which a part of the air flow passage 2 protrudes outward in a fan shape. The flap 4 has two plates (one is a medial lift plate 5 and the other is a damper plate 6) connected to the shaft 7 at a predetermined angle. The measuring plate 5 rotates within the air flow passage 2, and the damper plate 6 rotates within the damper chamber 3 around a shaft 7, and when the measuring plate 5 forwardly closes the air flow passage, the damper plate 6 rotates as a damper. This position maximizes the volume of chamber 3. The shaft 7 is rotatably attached to the housing 1, and is biased by a return spring (not shown) in a direction opposite to the rotation direction of the flap 4 caused by the intake air flow.

また、シャフト７はポテンショメータ一部（図示せず）
を駆動させるように構成されている。In addition, the shaft 7 is a part of a potentiometer (not shown)
It is configured to drive.

上記エアフローメータは、スロットル弁（図示せず）の
開弁状態により吸入空気流量が変わり、その吸入空気流
量による圧力とリターンスプリングのリターントルクと
の釣り合った角度までフラップ４が回転し、その回転位
置に応じてポテンショメータ一部が電気信号を発生する
。また、ダンパープレート６は、ダンパー室３内にあっ
てフラップ４の脈動を緩和する効果をもつ。In the above air flow meter, the intake air flow rate changes depending on the open state of the throttle valve (not shown), and the flap 4 rotates to an angle where the pressure due to the intake air flow rate is balanced with the return torque of the return spring, and the flap 4 rotates to its rotational position. The potentiometer part generates an electrical signal in response to. Further, the damper plate 6 is located within the damper chamber 3 and has the effect of alleviating the pulsation of the flap 4.

空気流通路２において、全閉時にフラップ４の先端（す
なわちメジャリングプレート５の先端）と対向するハウ
ジング１の壁面８はフラップ４の回転移動に応じて適当
な流通路絞りを形成する様な曲面になっている。In the air flow path 2, the wall surface 8 of the housing 1 that faces the tip of the flap 4 (i.e., the tip of the measuring plate 5) when fully closed is a curved surface that forms an appropriate flow path restriction according to the rotational movement of the flap 4. It has become.

また、フラップ４の全閉時位置は全閉ストッパ９により
規制される。Further, the fully closed position of the flap 4 is regulated by a fully closed stopper 9.

上述した従来のエアフローメータでは、第２図の特性図
に見られるように、吸入空気流量が多い“時のフラップ
４の開度特性が、吸入空気流量が少ない時の開度特性と
大きく異なったものとなる。In the above-mentioned conventional air flow meter, as seen in the characteristic diagram in Figure 2, the opening characteristics of the flap 4 when the intake air flow rate is high are significantly different from the opening characteristics when the intake air flow rate is low. Become something.

これは、従来のエアフローメータにおいては、第４図に
示すごとく、全閉ストッパ９が空気流通路２内に張り出
し、全閉ストッパ９の形状が空気流に対し、所定の勾配
を持つために、入口での空−流の一部がこの勾配に沿−
て流れて全開ストッパ９の先端にてその流れは剥離して
いる。この剥離した空気流は噴流となって下流側へと至
るが、空気流と全開ストッパ９の勾配により空気流通路
２の中央へと寄るために、中央に寄った空気流の圧力（
引付力）をメジャリングプレート５が受けて回動するフ
ラップ４は、充分に開ききらなくなる。This is because in the conventional air flow meter, as shown in FIG. 4, the fully closed stopper 9 protrudes into the airflow passage 2, and the shape of the fully closed stopper 9 has a predetermined slope with respect to the airflow. Part of the airflow at the inlet follows this gradient.
The flow separates at the tip of the fully open stopper 9. This separated air flow becomes a jet flow and reaches the downstream side, but because it approaches the center of the air flow passage 2 due to the air flow and the slope of the fully open stopper 9, the pressure of the air flow near the center (
The flap 4, which rotates when the measuring plate 5 receives an attractive force (attractive force), will not be able to fully open.

従って、吸入空気流量が多い時のフラップ４の高開度域
では、吸入空気流量の増加に対してその開度が増加せず
、吸入空気流量の多い時ｄ測定精度が低下するという不
具合があり、特開昭５５−１１７９１６号公報では下流
側にそらせ部材を設けることで、工、アフロ−メータの
特性に影響を与えているが、フラップ４の上流側の空気
流には前述の従来のものと同じ構成であるため、上述に
よる不具合は充分に解消できるものではない。Therefore, in the high opening range of the flap 4 when the intake air flow rate is large, the opening degree does not increase as the intake air flow rate increases, and there is a problem that the d measurement accuracy decreases when the intake air flow rate is large. , Japanese Patent Application Laid-Open No. 55-117916 discloses that a deflecting member is provided on the downstream side to affect the characteristics of the aflow meter, but the airflow on the upstream side of the flap 4 is controlled by the conventional method described above. Since the configuration is the same, the above-mentioned problems cannot be fully resolved.

（発明が解決しようとする問題） 本発明が解決しようとする問題は、上述したような吸入
空気流量の多い時のフラップの高開度域における、吸入
空気流量の増加に対する、フラップ開度が増加しないと
いうことによる、吸入空気流量の多い時の測定精度の低
下であり、本発明はこのような問題を解決し、吸入空気
流量の全域において測定精度のよいエアフローメータを
提供することにある。(Problem to be Solved by the Invention) The problem to be solved by the present invention is that in the high flap opening range when the intake air flow rate is high as described above, the flap opening degree increases with respect to an increase in the intake air flow rate. The purpose of the present invention is to solve this problem and provide an air flow meter with good measurement accuracy over the entire range of intake air flow rates.

（問題点を解決すための手段） 本発明は、上記問題を解決するために、空気流のガイド
部材が少なくとも１個以上フラップの上流側の空気流通
路内に空気流に沿っし配設された構成を有するエアフロ
ーメータとしている。(Means for Solving the Problems) In order to solve the above problems, the present invention provides that at least one airflow guide member is disposed along the airflow in the airflow passage on the upstream side of the flap. The air flow meter has a similar configuration.

（実施例） 以下、本発明の一実施例を第１図に基づき説明する。(Example) An embodiment of the present invention will be described below with reference to FIG.

図において、ハウジング１は、内部に断面が四角形の空
気流通路２と、この空気流量通路２の一部が外側へ扇状
に突出したダンパー室３とを成形する。フラップ４は２
つのプレート（一方がメジャリングプレート５、他方が
ダンパープレート６）が所定角度をもってシャフト７に
結合している。In the figure, a housing 1 has an air flow passage 2 having a rectangular cross section and a damper chamber 3 in which a part of the air flow passage 2 protrudes outward in a fan shape. flap 4 is 2
Two plates (one measuring plate 5 and the other damper plate 6) are coupled to the shaft 7 at a predetermined angle.

メジャリングプレート５は空気流通路２内を、またダン
パープレート６はダンパー室３内をシャフト７を中心に
回動し、メジャリングプレート５が空気流通路２を全閉
するとき、ダンパープレート６がダンパー室３の容積を
最大にする位置にある。The measuring plate 5 rotates within the air flow passage 2 and the damper plate 6 rotates within the damper chamber 3 around the shaft 7. When the measuring plate 5 completely closes the air flow passage 2, the damper plate 6 rotates. This position maximizes the volume of the damper chamber 3.

シャフト７はハウジング１は回転自在に取り付けられ、
かつリターンスプリング（図示せず）によって吸入空気
流によるフラップ４の回転方向と逆方向に付勢されてい
る。また、シャフト７はポテンショメータ一部（図示せ
ず）を駆動させるように構成されている。The shaft 7 is rotatably attached to the housing 1,
In addition, a return spring (not shown) urges the flap 4 in a direction opposite to the rotation direction of the flap 4 caused by the intake air flow. Further, the shaft 7 is configured to drive a portion of a potentiometer (not shown).

上記エアフローメータは、スロットル弁（図示せず）の
開弁状態により吸入空気流量が変わり、その吸入空気流
量による圧力とリターンスプリングのリターントルクと
の釣り合った角度までフラップ４が回転し、その回転位
置に応じてポテンシ日メータ一部が電気信号を発生する
。また、ダンパープレート６は、ダンパー室３内にあっ
てフラップ４の脈動＝を緩和する効果をもつ。In the above air flow meter, the intake air flow rate changes depending on the open state of the throttle valve (not shown), and the flap 4 rotates to an angle where the pressure due to the intake air flow rate is balanced with the return torque of the return spring, and the flap 4 rotates to its rotational position. Depending on the potentiometer part of the meter will generate an electrical signal. Further, the damper plate 6 is located within the damper chamber 3 and has the effect of alleviating the pulsation of the flap 4.

空気流通路２において、全閉時にフラップ４の先６ｓ（
すなわちメジャリングプレート５の先端）と対向するハ
ウジング１の壁面８はフラップ４の回転移動に応じて適
当な流通路絞りを形成する様な曲面になっている。In the air flow path 2, when fully closed, the tip 6s of the flap 4 (
That is, the wall surface 8 of the housing 1 facing the tip of the measuring plate 5 has a curved surface so as to form an appropriate flow passage restriction according to the rotational movement of the flap 4.

また、フラップ４の全閉時位置を規制するように全閉ス
トッパ９が設けられている。Further, a fully closed stopper 9 is provided to restrict the fully closed position of the flap 4.

そして、空気流通路２の入口側、図中左方には空気流に
沿って平行に空気流のガイド部材１１を１個ハウジング
１の壁面間を掛は渡すように壁面に対し垂直に設けであ
る。これは全閉ストッパ９による空気流の空気流通路２
の中央部への偏向を抑制するためのものである。On the entrance side of the air flow passage 2, on the left side in the figure, one air flow guide member 11 is provided parallel to the air flow and perpendicular to the wall surface so as to span between the walls of the housing 1. be. This is the air flow path 2 of the air flow due to the fully closed stopper 9.
This is to suppress deflection toward the center.

上記のガイド部材１１は、空気流通路２での空気流を乱
さず、かつ、圧力損失を招かない形状として、薄い板状
部材であり、この板状ガイド部材１１の厚みＴは空気流
通路２の入口側（図では連結部材１０）の内側の幅りに
対して、Ｔ≦０．０５Ｄであることが望ましく、長さし
は空気流がガイド部材１１に充分沿って流れることが可
能な助走長さを考慮して、Ｌ≧０．３０であることが望
ましい。The above-mentioned guide member 11 is a thin plate-like member having a shape that does not disturb the air flow in the air flow passage 2 and does not cause pressure loss, and the thickness T of this plate-shaped guide member 11 is It is desirable that T≦0.05D with respect to the inner width of the inlet side (connecting member 10 in the figure) of the guide member 11, and the length is such that the airflow can flow sufficiently along the guide member 11. Considering the length, it is desirable that L≧0.30.

また、ガイド部材１１の取付は位置としては、メジャリ
ングプレート５に干渉することなく、できるだけ下流側
に配設する。従って、フラップ４の全閉時にメジャリン
グプレート５の前面に対して１ｍｍ程度のクリアランス
をとることが望ましく、空気流通路２内の取付は位置と
しては、空気流方向に対する全閉ストッパ９の先端との
垂直距離すはｂ＝ｏ、ＩＤ〜０．２Ｄ程度となることが
望ましく、従って、ａ　’＝　０．７０程度に決定され
る。Further, the guide member 11 is installed as far downstream as possible without interfering with the measuring plate 5. Therefore, it is desirable to have a clearance of about 1 mm with respect to the front surface of the measuring plate 5 when the flap 4 is fully closed, and the mounting position in the air flow passage 2 is at the tip of the fully closed stopper 9 in the air flow direction. It is desirable that the vertical distance b = o, ID ~ 0.2D, and therefore a' = approximately 0.70.

次にガイド部材１１の取付は方法としては、ハウジング
１の成形時（例えばダイカスト等で）、一体に成形する
ことが最も簡便である。その他、ガイド部材１１をハウ
ジング１の所定位置に切り溝等を設け、この切り溝に嵌
合した後接着材、ネジ止めなどによりハウジング１に固
定してもよく、また、′空気流通路２の入口側にてノ＼
ウジング１と連結される連結部材１０に設けてあっても
よむ１゜上記の構成を有するエアフローメータにおいて
は、ガイド部材１１によって空気流の一部がガイド部材
１１の下流側でこのガイド部材１１に沿った方向に誘導
され、メジャリングプレート５の方向へと流れる。そし
て、吸入空気流量が多い時には、ガイド部材１１沿った
方向番ど誘導さた空気流が全閉ストッパ９により空気流
通路２の中央に寄ろうとする空気流を抑制し、空気流の
中央部分への偏向が抑えられる。従って、フラップ４が
高開度の時においても、空気流は充分にメジャリングプ
レート５を押圧するようになる。Next, the easiest way to attach the guide member 11 is to integrally mold it when the housing 1 is molded (for example, by die casting). Alternatively, the guide member 11 may be provided with a cut groove or the like in a predetermined position of the housing 1, and after fitting into the cut groove, it may be fixed to the housing 1 with an adhesive, screws, etc. On the entrance side＼
In the air flow meter having the above configuration, part of the air flow is directed to the guide member 11 on the downstream side of the guide member 11 by the guide member 11. The measuring plate 5 is guided in the direction along the measuring plate 5 and flows toward the measuring plate 5. When the intake air flow rate is large, the airflow guided in the direction along the guide member 11 is suppressed by the fully closed stopper 9 from moving toward the center of the airflow passage 2, and the airflow is directed toward the center of the airflow path. deflection is suppressed. Therefore, even when the flap 4 is at a high opening degree, the air flow sufficiently presses the measuring plate 5.

なお、上述の実施例では、ガイド部材１１を薄い板状の
ものとしていたが、この形状は偏平なものと限ったもの
では無く、前述した圧力損失、流れの乱れ等を招かない
厚みの流線形状のものであってもかまわない。In the above-mentioned embodiment, the guide member 11 is made into a thin plate, but this shape is not limited to a flat one, and may be a streamlined one with a thickness that does not cause the aforementioned pressure loss, flow disturbance, etc. It may be of any shape.

また、ガイド部材１１のハウジング１の壁面に対する取
付けは垂直に設けるとしていたが、厳密に垂直□に取付
ける必要はなく、例えば、一体成形した場合、その型の
勾配輪台わせた極端に垂直の位置からずれない程度の所
定の角度をもって設けてもよい。なお、ガイド部材１１
は必ず空気流に対し平行に保つようにしておく。In addition, although the guide member 11 was supposed to be installed vertically to the wall surface of the housing 1, it is not necessary to install it strictly vertically. It may be provided at a predetermined angle that does not deviate from the angle. Note that the guide member 11
Be sure to keep it parallel to the airflow.

さらに、ガイド部材１１は１個に限定されたものではな
く、複数個設けてもかまわない。Furthermore, the number of guide members 11 is not limited to one, and a plurality of guide members 11 may be provided.

（発明の効果） 以上述べてきたように、本発明においては、空気流のガ
イド部材が少なくとも１個以上、フラ・ノブの上流側の
空気流通路内に空気流に沿って配設された構成を有する
エアフローメータとしたことから、吸入空気流量が多い
時のフラ・ノブの高関度域での、空気流の中央への偏向
はガイド部材により抑制されるので、フラップが高開度
の時であっても吸入空気流量が増加すれば、それに応じ
てフラップへの空気流による押圧力も増してフラ・ノブ
はさらに開くようになり、従って、吸入空気流量の多い
時でもフラップの開度特性は吸入空気流量の変化に充分
追従でき、るようになり、吸入空気流量の変化する全域
にわたって測定精度が良好であるという優れ た効果がある。(Effects of the Invention) As described above, in the present invention, at least one airflow guide member is disposed along the airflow in the airflow passage on the upstream side of the hula knob. Because the air flow meter has a Even if the intake air flow rate increases, the pressure exerted by the air flow on the flap will increase accordingly, causing the flap knob to open further. Therefore, even when the intake air flow rate is high, the flap opening characteristics will change. This has the excellent effect of being able to sufficiently follow changes in the intake air flow rate, and providing good measurement accuracy over the entire range where the intake air flow rate changes.

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

第１図は、本発明の一実施例を示す断面図、第２図は、
吸入空気流量に対するフラップの開度特性を示すグラフ
、第３図は、従来のエアフローメータの構成を示す断面
図、第４図は、従来のエアフローメータの構成によるフ
ラップ高開度時の空気流の状態を示す図である。 １・・・ハウジング、２・・・空気流通路、４・・・フ
ラップ、５・・・メジャリングプレート、９・・・全閉
ストッパ、１１・・・ガイド部材。FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 is a sectional view showing an embodiment of the present invention.
A graph showing the flap opening characteristics with respect to the intake air flow rate. Figure 3 is a cross-sectional view showing the configuration of a conventional air flow meter. Figure 4 is a graph showing the air flow at high flap opening with the configuration of a conventional air flow meter. It is a figure showing a state. DESCRIPTION OF SYMBOLS 1... Housing, 2... Air flow path, 4... Flap, 5... Measuring plate, 9... Fully closed stopper, 11... Guide member.

Claims (2)

【特許請求の範囲】[Claims] （１）空気流通路を形成するハウジングと、前記空気流
通路に設けられ吸入空気流量に応じて回転するフラップ
とを有し、前記フラップの回転角度位置より吸入空気流
量を測定するエアフローメータにおいて、空気流のガイ
ド部材が、少なくとも１個以上、前記フラップの上流側
の空気流通路内に空気流に沿って配設されていることを
特徴とするエアフローメータ。(1) An air flow meter that includes a housing forming an air flow passage and a flap that is provided in the air flow passage and rotates according to the intake air flow rate, and that measures the intake air flow rate from the rotational angular position of the flap, An air flow meter characterized in that at least one air flow guide member is disposed along the air flow in the air flow passage on the upstream side of the flap. （２）前記ガイド部材は、空気流通路を横切って配設さ
れた薄板形状であることを特徴とする特許請求の範囲第
１項記載のエアフローメータ。(2) The air flow meter according to claim 1, wherein the guide member has a thin plate shape disposed across the air flow path.
JP14288384A 1984-07-09 1984-07-09 Air flowmeter Pending JPS6120820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14288384A JPS6120820A (en) 1984-07-09 1984-07-09 Air flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14288384A JPS6120820A (en) 1984-07-09 1984-07-09 Air flowmeter

Publications (1)

Publication Number Publication Date
JPS6120820A true JPS6120820A (en) 1986-01-29

Family

ID=15325808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14288384A Pending JPS6120820A (en) 1984-07-09 1984-07-09 Air flowmeter

Country Status (1)

Country Link
JP (1) JPS6120820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015513201A (en) * 2012-04-12 2015-04-30 ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ Equipment for fuel cell fuel supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015513201A (en) * 2012-04-12 2015-04-30 ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ Equipment for fuel cell fuel supply

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