JPS61107101A - Apparatus for detecting opening degree of throttle valve of internal combustion engine - Google Patents

Apparatus for detecting opening degree of throttle valve of internal combustion engine

Info

Publication number
JPS61107101A
JPS61107101A JP22786884A JP22786884A JPS61107101A JP S61107101 A JPS61107101 A JP S61107101A JP 22786884 A JP22786884 A JP 22786884A JP 22786884 A JP22786884 A JP 22786884A JP S61107101 A JPS61107101 A JP S61107101A
Authority
JP
Japan
Prior art keywords
throttle valve
opening degree
output voltage
changes
oscillation circuit
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
JP22786884A
Other languages
Japanese (ja)
Inventor
Hisatomo Oki
久朝 大木
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.)
Hitachi Unisia Automotive Ltd
Original Assignee
Japan Electronic Control Systems 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 Japan Electronic Control Systems Co Ltd filed Critical Japan Electronic Control Systems Co Ltd
Priority to JP22786884A priority Critical patent/JPS61107101A/en
Publication of JPS61107101A publication Critical patent/JPS61107101A/en
Pending legal-status Critical Current

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  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To eliminate the variation in output voltage due to slide noise and to attain to reduce driving torque, by providing a predetermined gap between a throttle valve side and a detection apparatus side by the advance and retraction of a magnetic member in a coil member to detect the opening degree of a throttle valve. CONSTITUTION:When the leading end part of an iron core member 14 is allowed to advance and retract in a coil member 2 corresponding to the opening degree of a throttle valve, the inductance of the member 12 changes corresponding to the opening degree of the valve. The oscillation frequencies of LC oscillation circuits 12, 15 change corresponding to the change in inductance and the voltage inputted to a detector 18 from a F-V converter 17 changes corresponding to the change in the opening degree of the valve. By this method, the detector 18 can detect the opening degree of the throttle valve from the output voltage of the converter 17. Because the opening degree of the throttle valve is detected in such a state that the throttle valve side and the detection apparatus de are spaced apart to each other so as to provide a predetermined gap therebetween, the variation in output voltage due to slide noise is eliminated and the driving torque of the throttle valve can be reduced.

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スロットルバルブの開度を検出する
スロットル開度検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a throttle opening detection device for detecting the opening of a throttle valve of an internal combustion engine.

〈従来の技術〉 スロットル開度検出装置の従来例として実願昭５９−３
４００号に開示されるようなものがあシ、これを第５図
に示す基本構成図に基づいて説明する０ すなわち、機関の吸気通路に介装されたスロットルバル
ブのパルプシャフト１に可動接点２を連結させ、該可動
接点２をスロットルバルブの一度変化に連動させて固定
抵抗３上をスライドさせる。<Prior art> As a conventional example of a throttle opening detection device, the Utility Model Application No. 59-3
There is a device as disclosed in No. 400, which will be explained based on the basic configuration diagram shown in FIG. The movable contact 2 is caused to slide over the fixed resistor 3 in conjunction with a single change in the throttle valve.

これによシスロットルバルプの開度に対応する出力電圧
Ｕｓに基づいてスロットルバルブの開度を検出するよう
にしている。尚、４はノ（ツテリである０ 〈発明が解決しようとする問題点〉 しかしながら、このような従来のスロットル開度検出装
置においては、可動接点２と固定抵抗３とが摺動接触す
るようにしているため、摺動ノイズが発生して出力電圧
Ｕ８が変化しスロットルバルブ開度の誤検知のおそれが
あった。また、可動接点２と固定接点３との接触抵抗に
よシスロットルバルブの駆動トルクが増大していた。Thereby, the opening degree of the throttle valve is detected based on the output voltage Us corresponding to the opening degree of the throttle valve. Note that 4 is 0 (problem to be solved by the invention) However, in such a conventional throttle opening detection device, the movable contact 2 and the fixed resistor 3 are not in sliding contact. As a result, sliding noise occurs and the output voltage U8 changes, leading to a risk of false detection of the throttle valve opening.Furthermore, due to the contact resistance between the movable contact 2 and the fixed contact 3, the throttle valve is not driven. Torque was increasing.

本発明は、このような実状に鑑みてなされたもので、ス
ロットルバルブ側と検出装置側とを所定の空隙を設−け
て離間させスロットルバルブの開度を検出するスロット
ル開度検出装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and provides a throttle opening detection device that detects the opening of the throttle valve by separating the throttle valve side and the detection device side with a predetermined gap. The purpose is to

〈問題点を解決するための手段〉 このため、第１発明としてはコ′イル部材とコンデンサ
とを含む発振回路と、スロットルバルブの開度変化に連
動して前記コイル部材の筒内を進退する磁性部材と、前
記発振回路の発振周波数に基づいてスロットルバルブの
開度を検出する検出器と、を備えるようにした。また、
第２発明としては対向させた導電部材の対向面積がスロ
ットルバルブの開度変化に連動して変化する可変静電容
量形コンデンサを含んで形成される発振回路と、該発振
回路の発振周波数に基づいてスロットルバルブの開度を
検出する検出器と、を備えるようにした０ く作用〉 これによシ、スロットルバルブ側と検出装置側とを第１
発明ではコイル部材と磁性部材とにより離間させまた第
２発明では対向する導電部材によシ離間させる。そして
、スロットルバルブの開度に応じて変化する発振回路の
発振周波数に基づいてスロットルバルブの開度を検出す
るようにした。<Means for Solving the Problems> For this reason, the first invention includes an oscillation circuit including a coil member and a capacitor, and an oscillation circuit that moves the coil member back and forth in the cylinder in conjunction with changes in the opening degree of the throttle valve. The present invention includes a magnetic member and a detector that detects the opening degree of the throttle valve based on the oscillation frequency of the oscillation circuit. Also,
The second invention is based on an oscillation circuit formed including a variable capacitance type capacitor in which the opposing area of the opposing conductive members changes in conjunction with changes in the opening degree of the throttle valve, and an oscillation frequency of the oscillation circuit. and a detector for detecting the opening degree of the throttle valve. This allows the throttle valve side and the detection device side to be connected to the first
In the invention, they are separated by a coil member and a magnetic member, and in the second invention, they are separated by opposing conductive members. The opening degree of the throttle valve is detected based on the oscillation frequency of the oscillation circuit, which changes depending on the opening degree of the throttle valve.

〈実施例〉 以下に、本発明の実施例を図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.

第１図及び第２図に第１発明の一実施例を示す。An embodiment of the first invention is shown in FIGS. 1 and 2.

第１図において、スロットルバルブ（図示せず）付近の
吸気通路外壁には非磁性体からなる筒状部材１１が取付
けられ、この筒状部材１１にはコイル部材１２が巻回さ
れている。また、スロットルバルブのバルブシャフト１
３の端部には磁性部材としての鉄心部材１４が取付けら
れ、この鉄心部材１４の先端部がスロットルバルブの開
度に連動して前記筒状部材１１内を進退されるように構
成されている。In FIG. 1, a cylindrical member 11 made of a non-magnetic material is attached to the outer wall of an intake passage near a throttle valve (not shown), and a coil member 12 is wound around this cylindrical member 11. Also, the valve shaft 1 of the throttle valve
An iron core member 14 as a magnetic member is attached to the end of the cylindrical member 3, and the tip of the iron core member 14 is configured to move forward and backward within the cylindrical member 11 in conjunction with the opening degree of the throttle valve. .

前記コイル部材１２は第２図に示すようにコンデンサ１
５に接続され、これらコイル部材１２とコンデンサ１５
とに増巾器１６が並列接続されている。ここで、コイル
部材１２とコンデンサ１５と増巾器１６によｐＬｃ発振
回路が形成されている。The coil member 12 is connected to the capacitor 1 as shown in FIG.
5, these coil members 12 and capacitors 15
An amplifier 16 is connected in parallel to both. Here, a pLc oscillation circuit is formed by the coil member 12, the capacitor 15, and the amplifier 16.

また、前記増巾器１６の出力電圧はＦ−Ｖ変換器１７に
印加されておシ、前記コイル部材１２のインダクタンス
変化によシ変化する増巾器１６の出力電圧の周期（発振
周波数）がＦ−Ｖ変換器１７において電圧に変換される
ように構成されている。Further, the output voltage of the amplifier 16 is applied to the F-V converter 17, and the period (oscillation frequency) of the output voltage of the amplifier 16 changes depending on the inductance change of the coil member 12. It is configured to be converted into a voltage in an F-V converter 17.

Ｆ−Ｖ変換器１７の出力電圧は該出力電圧に基づいてス
ロットルバルブの開度を検出する検出器１８に印加され
ている。The output voltage of the F-V converter 17 is applied to a detector 18 that detects the opening degree of the throttle valve based on the output voltage.

かかる構成によれば、スロットルバルブの開度に応じて
鉄心部材１４の先端部をコイル部材１２内を進退させる
と、コイル部材１２のインダクタンスがスロットルバル
ブの開度に対応して変化する。したがって、ＬＣ発振回
路の発振周波数も前記インダクタンス変化に対応して変
化するから、Ｆ−Ｖ変換器１７から検出器１８に入力さ
れる電圧も前記スロットルバルブの開度変化に対応して
変化する。これによシ検出器１８はＦ−Ｖ変換器１Ｔの
出力電圧からスロットルバルブの開度を検出できる。According to this configuration, when the tip of the iron core member 14 is moved back and forth within the coil member 12 in accordance with the opening degree of the throttle valve, the inductance of the coil member 12 changes in accordance with the opening degree of the throttle valve. Therefore, since the oscillation frequency of the LC oscillation circuit also changes in response to the change in inductance, the voltage input from the F-V converter 17 to the detector 18 also changes in response to the change in the opening degree of the throttle valve. Thereby, the detector 18 can detect the opening degree of the throttle valve from the output voltage of the F-V converter 1T.

以上説明したように、スロットルバルブの開度に連動さ
せて鉄心部材１４をコイル部材１２内を進退させるよう
にしたので、スロットルバルブ側と検出装置側とを所定
の空隙を設けて離間させた状態でスロットルバルブの開
度を検出できるため、従来発生していた摺動ノイズによ
る出力電圧の変動をなくせると共にスロットルバルブの
駆動トルクを減少できる。As explained above, since the core member 14 is moved forward and backward within the coil member 12 in conjunction with the opening degree of the throttle valve, the throttle valve side and the detection device side are separated by a predetermined gap. Since the opening degree of the throttle valve can be detected, it is possible to eliminate fluctuations in output voltage due to sliding noise that conventionally occur, and to reduce the driving torque of the throttle valve.

第３図及び第４図は第２発明の一実施例を示す。3 and 4 show an embodiment of the second invention.

第３図において、スロットルバルブ付近の吸気通路外壁
には導電部材としての半円状の金属製ステータ２１が取
付けられている。一方、スロットルバルブのパルプシャ
フト２２には前記金ａｍス　　　□データ２１に所定の
空隙を持って対向させた半円状の金属製ロータ２３が取
付けられている。ここで、スロットルバルブの開度変化
に連動して金属裂ロータ２３が回動されて該金属製ロー
タ２３と前記金属製ステータ２１との対向する面積が変
化するように構成されておシ、金属製ステータ２１と金
属製ロータ２３とによシ靜電容量が変化する可変静電容
量形コンデンサ２４が形成される。In FIG. 3, a semicircular metal stator 21 as a conductive member is attached to the outer wall of the intake passage near the throttle valve. On the other hand, a semicircular metal rotor 23 is attached to the pulp shaft 22 of the throttle valve, and is opposed to the metal rotor 21 with a predetermined gap therebetween. Here, the metal rotor 23 is rotated in conjunction with a change in the opening degree of the throttle valve, so that the facing area of the metal rotor 23 and the metal stator 21 changes. The stator 21 made of metal and the rotor 23 made of metal form a variable capacitance type capacitor 24 whose static capacitance changes.

可変静電容量形コンデンサ２４は第４図に示すようにコ
イル部材２５に接続され、とれらコイル部材２５とコン
デンサ２４とに増巾器２６が並列接続されている。ここ
では、コンデンサ２４とコイル部材２５と増巾器２６と
によシＬＣ発振回路が形成されている。The variable capacitance capacitor 24 is connected to a coil member 25 as shown in FIG. 4, and an amplifier 26 is connected in parallel to the coil member 25 and the capacitor 24. Here, a capacitor 24, a coil member 25, and an amplifier 26 form an LC oscillation circuit.

また、前記増巾器２６の出力電圧はＦ−Ｖ変換器２７に
印加されておシ、前記コンデンサ２４の容量変化によ）
変化する増巾器２６の出力電圧の周期（発振周波数）が
Ｆ−Ｖ変換器２７において電圧に変換されるように構成
されている。Ｆ−Ｖ変換器２７の出力電圧は該出力電圧
に基づいてスロットルバルブの開度を検出する検出器２
８に印加されている。Furthermore, the output voltage of the amplifier 26 is applied to the F-V converter 27 (by changing the capacitance of the capacitor 24).
It is configured such that the changing period (oscillation frequency) of the output voltage of the amplifier 26 is converted into a voltage in the F-V converter 27. The output voltage of the F-V converter 27 is detected by the detector 2 which detects the opening degree of the throttle valve based on the output voltage.
8 is applied.

かかる構成によれば、スロットルバルブの開度に応じて
金属ｆＪＩロータ２３が回動されそれらの対向面積が変
化するから、コンデンサ２４のキャヅくシタンスがスロ
ットルバルブの開度に応じて変化する。したがって、Ｌ
Ｃ発振回路の発振周波数も前記キャパシタンス変化に対
応して変化するから、Ｆ−Ｖ変換器２７から検出器２８
に入力される電圧も前、記スロットルバルブの開度変化
に対応して変化する。これにより検出器２８はＦ−Ｖ変
換器２７の出力電圧からスロットルバルブの開度を検出
できる。According to this configuration, the metal fJI rotor 23 rotates in accordance with the opening degree of the throttle valve, and the opposing area thereof changes, so that the capacitance of the capacitor 24 changes in accordance with the opening degree of the throttle valve. Therefore, L
Since the oscillation frequency of the C oscillation circuit also changes in accordance with the capacitance change, the oscillation frequency from the F-V converter 27 to the detector 28 changes.
The voltage input to the throttle valve also changes in response to changes in the opening degree of the throttle valve. Thereby, the detector 28 can detect the opening degree of the throttle valve from the output voltage of the F-V converter 27.

以上説明したように、金属製ステータ２１と金属製ロー
タ２３とを所定の空隙を設けて対向させスロットルバル
ブの開度を検出するようにしたから、前記実施例と同様
な効果を奏する。As explained above, since the opening degree of the throttle valve is detected by making the metal stator 21 and the metal rotor 23 face each other with a predetermined gap therebetween, the same effects as in the previous embodiment can be obtained.

また、第１発明ではコイル部材１２のインダクタンスの
変化特性を変え第２発明ではコンデンサの；ンダクタン
ス変化特性を変えることによシ、アイドル運転付近のス
ロットルバルブ開度の分解能力を高めることができる。Further, by changing the inductance change characteristics of the coil member 12 in the first invention and by changing the inductance change characteristics of the capacitor in the second invention, it is possible to improve the ability to resolve the throttle valve opening in the vicinity of idling operation.

尚、第２発明の一実施例ではコンデンサ２４とコイル部
材２５とを含むＬＣ発振回路を説明したが、コンデンサ
２４と抵抗とを含むＣＲ発振回路によっても上記と同様
な効果を奏する。In the embodiment of the second invention, an LC oscillation circuit including the capacitor 24 and the coil member 25 has been described, but a CR oscillation circuit including the capacitor 24 and a resistor can also produce the same effect as described above.

〈発明の効果〉 本発明は、以上説明したように、第１発明ではコイル部
材と該コイ〃部材内を進退する磁性部材とによシまた第
２発明ではコンデンサを構成する導電部材を対向させる
ことによシ、スロットルバルブ側と検出装置側とを所定
の間隙を設けて離間させてスロットルバルブの開度を検
出するようにしたゆで、従来の問題点である摺動ノイズ
による出力電圧の変動をなくせると共にスロットルバル
ブの駆動トルクを低減できる。<Effects of the Invention> As explained above, in the first invention, the coil member and the magnetic member moving back and forth within the coil member are arranged to face each other, and in the second invention, the conductive members constituting the capacitor are made to face each other. In particular, when the opening of the throttle valve is detected by separating the throttle valve side and the detection device side with a predetermined gap, the conventional problem of fluctuations in output voltage due to sliding noise is avoided. It is possible to eliminate this problem and reduce the driving torque of the throttle valve.

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

第１図は第１発明の一実施例を示す要部構成図、第２図
は同上の回路図、第３図は第２発明の一実施例を示す要
部構成図、第４図は同上の回路図、第５図はスロットル
パ°ルプ開度検出装置の従来例を示す基本構成図である
。 １２・・・コイル部材　　１３．２２・・・バルブシャ
フト　　１４・・・鉄心部材　　１５・・・コンデンサ
１６．２６・・・増巾器　　１８　、２８・・・検出器
２１−・・金属製ステータ　　２３・・・金属製ロータ
２４・・・可変静電容量形コンデンサ 特　許　出　願　人　　日本電子機器株式会社代理人　
弁理士　笹　島　富二雄 第１図 第２図 第３図 第４図 第５図Fig. 1 is a block diagram of main parts showing an embodiment of the first invention, Fig. 2 is a circuit diagram of the same as above, Fig. 3 is a block diagram of main parts showing an embodiment of the second invention, Fig. 4 is a block diagram of the same as above. FIG. 5 is a basic configuration diagram showing a conventional example of a throttle valve opening detection device. 12... Coil member 13.22... Valve shaft 14... Iron core member 15... Capacitor 16.26... Amplifier 18, 28... Detector 21-... Metal stator 23 ...Metal rotor 24...Variable capacitance capacitor patent Applicant Agent: Japan Electronics Co., Ltd.
Patent Attorney Fujio SasashimaFigure 1Figure 2Figure 3Figure 4Figure 5

Claims (2)

【特許請求の範囲】[Claims] （１）コイル部材とコンデンサとを含む発振回路と、ス
ロツトルバルブの開度変化に連動して前記コイル部材の
筒内を進退する磁性部材と、前記発振回路の発振周波数
に基づいてスロツトルバルブの開度を検出する検出器と
、を備えたことを特徴とする内燃機関のスロツトル開度
検出装置。(1) An oscillation circuit including a coil member and a capacitor, a magnetic member that advances and retreats within the cylinder of the coil member in conjunction with changes in the opening degree of the throttle valve, and a throttle valve that operates based on the oscillation frequency of the oscillation circuit. A throttle opening detection device for an internal combustion engine, comprising: a detector for detecting an opening of an internal combustion engine. （２）対向させた導電部材の対向面積がスロツトルバル
ブの開度変化に連動して変化する可変静電容量形コンデ
ンサを含んで形成される発振回路と、該発振回路の発振
周波数に基づいてスロツトルバルブの開度を検出する検
出器と、を備えたことを特徴とする内燃機関のスロツト
ル開度検出装置。(2) An oscillation circuit formed including a variable capacitance capacitor in which the opposing area of the opposing conductive members changes in conjunction with changes in the opening degree of the throttle valve, and an oscillation circuit based on the oscillation frequency of the oscillation circuit. A throttle opening detection device for an internal combustion engine, comprising: a detector for detecting the opening of a throttle valve.
JP22786884A 1984-10-31 1984-10-31 Apparatus for detecting opening degree of throttle valve of internal combustion engine Pending JPS61107101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22786884A JPS61107101A (en) 1984-10-31 1984-10-31 Apparatus for detecting opening degree of throttle valve of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22786884A JPS61107101A (en) 1984-10-31 1984-10-31 Apparatus for detecting opening degree of throttle valve of internal combustion engine

Publications (1)

Publication Number Publication Date
JPS61107101A true JPS61107101A (en) 1986-05-26

Family

ID=16867609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22786884A Pending JPS61107101A (en) 1984-10-31 1984-10-31 Apparatus for detecting opening degree of throttle valve of internal combustion engine

Country Status (1)

Country Link
JP (1) JPS61107101A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002310608A (en) * 2001-04-12 2002-10-23 Tadatoshi Goto Angle measuring instrument
WO2015037562A1 (en) * 2013-09-10 2015-03-19 タイコエレクトロニクスジャパン合同会社 Rotation angle detection sensor and throttle device of internal combustion engine
JP2017521594A (en) * 2014-06-26 2017-08-03 シェフラー テクノロジーズ アー・ゲー ウント コー． カー・ゲーＳｃｈａｅｆｆｌｅｒ Ｔｅｃｈｎｏｌｏｇｉｅｓ ＡＧ ＆ Ｃｏ． ＫＧ Camshaft adjusting device and method for identifying adjustment of camshaft adjusting device

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JPS59126906A (en) * 1983-01-12 1984-07-21 Omron Tateisi Electronics Co Detector of displacement
JPS59133405A (en) * 1983-01-20 1984-07-31 Nippon Denso Co Ltd Position detector
JPS5937508B2 (en) * 1977-05-27 1984-09-10 株式会社リコー Character pattern generator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937508B2 (en) * 1977-05-27 1984-09-10 株式会社リコー Character pattern generator
JPS59126906A (en) * 1983-01-12 1984-07-21 Omron Tateisi Electronics Co Detector of displacement
JPS59133405A (en) * 1983-01-20 1984-07-31 Nippon Denso Co Ltd Position detector

Cited By (5)

* Cited by examiner, † Cited by third party
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JP2002310608A (en) * 2001-04-12 2002-10-23 Tadatoshi Goto Angle measuring instrument
WO2015037562A1 (en) * 2013-09-10 2015-03-19 タイコエレクトロニクスジャパン合同会社 Rotation angle detection sensor and throttle device of internal combustion engine
JP2015055472A (en) * 2013-09-10 2015-03-23 タイコエレクトロニクスジャパン合同会社 Rotation angle detection sensor, and throttle device of internal combustion engine
JP2017521594A (en) * 2014-06-26 2017-08-03 シェフラー テクノロジーズ アー・ゲー ウント コー． カー・ゲーＳｃｈａｅｆｆｌｅｒ Ｔｅｃｈｎｏｌｏｇｉｅｓ ＡＧ ＆ Ｃｏ． ＫＧ Camshaft adjusting device and method for identifying adjustment of camshaft adjusting device
US10865716B2 (en) 2014-06-26 2020-12-15 Schaefller Technologies AG & Co. KG Camshaft adjuster and method for determining the setting of a camshaft adjuster

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