JPS6311307Y2 - - Google Patents
Info
- Publication number
- JPS6311307Y2 JPS6311307Y2 JP12218381U JP12218381U JPS6311307Y2 JP S6311307 Y2 JPS6311307 Y2 JP S6311307Y2 JP 12218381 U JP12218381 U JP 12218381U JP 12218381 U JP12218381 U JP 12218381U JP S6311307 Y2 JPS6311307 Y2 JP S6311307Y2
- Authority
- JP
- Japan
- Prior art keywords
- potentiometer
- throttle opening
- throttle valve
- output
- closed position
- 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
Links
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
【考案の詳細な説明】
本考案はエンジンの吸入空気量検出に用いられ
るポテンシヨメータ型のスロツトル開度検出器に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a potentiometer type throttle opening detector used for detecting the intake air amount of an engine.
これまで第１図ａに示す如くスロツトル開度の
ある位置から一定量変化したのちにポテンシヨメ
ータ出力が立上るものがあり、また第１図ｂに示
す如くスロツトル開度に対し起点からリニヤに出
力するものが知られている。しかしながら、前者
では出力の立上り時点をスロツトル弁の全閉位置
に一致させるように取付け作業を行うことは非常
に困難が伴い、また後者ではスロツトル弁の全閉
位置に対応した出力を予めある値に設定しておけ
ば検出可能であるが、その測定精度が悪くなると
いう欠点がある。 Until now, there have been cases in which the potentiometer output rises after the throttle opening changes by a certain amount from a certain position, as shown in Figure 1a, and in other cases, as shown in Figure 1b, the potentiometer output rises linearly from the starting point with respect to the throttle opening. What it outputs is known. However, in the former case, it is extremely difficult to perform the installation work so that the output rise point coincides with the fully closed position of the throttle valve, and in the latter case, the output corresponding to the fully closed position of the throttle valve is set to a certain value in advance. If set, detection is possible, but the drawback is that the measurement accuracy deteriorates.
この考案は上記した欠点を解消できるスロツト
ル開度検出器を提供することを目的とするもので
ある。即ち、この考案ではスロツトル弁の全閉位
置に対応するポテンシヨメータ部分の出力感度を
予め高めておくことを特徴とするものである。 The object of this invention is to provide a throttle opening degree detector that can eliminate the above-mentioned drawbacks. That is, this invention is characterized in that the output sensitivity of the potentiometer portion corresponding to the fully closed position of the throttle valve is increased in advance.
以下図面に示す実施例につき説明する。第２図
はスロツトル開度検出器を構成するポテンシヨメ
ータの概念図で、１はポテンシヨメータで、エン
ジン３の吸気管路に設けたスロツトル弁２のスロ
ツトル開度θを検出するものである。一般にこの
検出した信号は電圧レベルに変換されて図示して
いないエンジン制御用コンピユータに入力され、
エンジンアイドル運転、減速、加速などの運転状
態を検出し、それに見合つたエンジン制御（燃料
制御や点火時期制御など）を実現するものであ
る。またポテンシヨメータ１において、１１はス
ロツトル弁２の回転に連動する慴動ブラシであ
り、１２は例えばセラミツク基板上に印刷形成さ
れた抵抗体である。この抵抗体１２は、導体部
Ａ、高抵抗部Ｃ、およびポテンシヨ抵抗部Ｂの３
つの部分からなる。この高抵抗部Ｃはスロツトル
弁２の全閉位置に相当する位置に相当し回転角度
範囲が１〜２度程度の狭い構造からなる。１３，
１４は所定の電圧（電源電圧VBとGND）を与え
るための入力端子、１５はポテンシヨメータ出力
VSを取出すための出力端子である。 The embodiments shown in the drawings will be described below. Fig. 2 is a conceptual diagram of a potentiometer that constitutes a throttle opening detector. 1 is a potentiometer that detects the throttle opening θ of a throttle valve 2 installed in the intake pipe of an engine 3. . Generally, this detected signal is converted to a voltage level and input to an engine control computer (not shown).
It detects operating conditions such as engine idling, deceleration, and acceleration, and implements appropriate engine control (fuel control, ignition timing control, etc.). In the potentiometer 1, 11 is a sliding brush that is linked to the rotation of the throttle valve 2, and 12 is a resistor printed, for example, on a ceramic substrate. This resistor 12 has three parts: a conductor part A, a high resistance part C, and a potentiometer resistance part B.
It consists of two parts. This high resistance portion C corresponds to a position corresponding to the fully closed position of the throttle valve 2, and has a narrow structure with a rotation angle range of about 1 to 2 degrees. 13,
14 is an input terminal for applying a predetermined voltage (power supply voltage V B and GND), 15 is a potentiometer output
This is an output terminal for taking out V S.
そこで、上記構成によると、第３図に示す如く
各端子１３，１４，１５の電圧を処理した検出出
力Ｖ（これには（VS−GND）／（VB−GND））
は高抵抗部Ｃに相当する部分でスロツトル開度θ
に対し急勾配（高感度）となり、ポテンシヨ抵抗
部Ｂの感度に対し数十倍にして得られる。従つ
て、この高抵抗部Ｃにおいて変化する検出出力Ｖ
の範囲内のいずれかに検出電圧値VS１を設定し
ておけば、この値VS１が多少変化してもそれに
ほとんど影響されることなくスロツトル開度θが
全閉位置にあるか否かを正確かつ安定して検出で
きるようになる。 Therefore , according to the above configuration, as shown in FIG.
is the throttle opening θ at the part corresponding to the high resistance part C.
The gradient becomes steeper (higher sensitivity) than that of the potentiometer resistance part B, and the sensitivity is several tens of times higher than that of the potentiometer resistance section B. Therefore, the detection output V that changes in this high resistance section C
If the detection voltage value V S 1 is set to a value within the range of , even if this value V S 1 changes slightly, it will be almost unaffected and it will be possible to determine whether the throttle opening θ is at the fully closed position or not. This makes it possible to detect accurately and stably.
以上の如く本考案では、スロツトル弁の全閉位
置を正確かつ安定して検出できるという効果が期
待できる。 As described above, the present invention can be expected to have the effect of accurately and stably detecting the fully closed position of the throttle valve.
第１図は従来例を説明するための出力特性図、
第２図は本考案の一実施例を示す概念図、第３図
は本考案の作動説明に供する出力特性図である。
１……ポテンシヨメータ、２……スロツトル
弁、３……エンジン、１１……慴動ブラシ、１２
……抵抗体、Ｂ……ポテンシヨ抵抗部、Ｃ……高
抵抗部。
Figure 1 is an output characteristic diagram for explaining a conventional example.
FIG. 2 is a conceptual diagram showing an embodiment of the present invention, and FIG. 3 is an output characteristic diagram for explaining the operation of the present invention. 1... Potentiometer, 2... Throttle valve, 3... Engine, 11... Translating brush, 12
...Resistor, B... Potentiometer resistance section, C... High resistance section.
Claims (1)
号を発生するポテンシヨメータを備えてなるスロ
ツトル開度検出器において、前記ポテンシヨメー
タを抵抗体で構成し、しかも前記抵抗体のうち前
記スロツトル弁の全閉位置に相当する部分を高抵
抗体で構成したことを特徴とするスロツトル開度
検出器。 In a throttle opening detector comprising a potentiometer that generates an electrical signal in accordance with the throttle opening of a throttle valve, the potentiometer is composed of a resistor, and all of the resistors are connected to the throttle valve. A throttle opening detector characterized in that the part corresponding to the closed position is made of a high-resistance material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12218381U JPS5827541U (en) | 1981-08-18 | 1981-08-18 | Throttle opening detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12218381U JPS5827541U (en) | 1981-08-18 | 1981-08-18 | Throttle opening detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5827541U JPS5827541U (en) | 1983-02-22 |
| JPS6311307Y2 true JPS6311307Y2 (en) | 1988-04-02 |
Family
ID=29916111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12218381U Granted JPS5827541U (en) | 1981-08-18 | 1981-08-18 | Throttle opening detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827541U (en) |
-
1981
- 1981-08-18 JP JP12218381U patent/JPS5827541U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5827541U (en) | 1983-02-22 |
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