JPS60159659A - Plier-shaped trigger signal transmitter - Google Patents

Plier-shaped trigger signal transmitter

Info

Publication number
JPS60159659A
JPS60159659A JP60001566A JP156685A JPS60159659A JP S60159659 A JPS60159659 A JP S60159659A JP 60001566 A JP60001566 A JP 60001566A JP 156685 A JP156685 A JP 156685A JP S60159659 A JPS60159659 A JP S60159659A
Authority
JP
Japan
Prior art keywords
signal transmitter
pincer
trigger signal
core
shaped
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
JP60001566A
Other languages
Japanese (ja)
Other versions
JPH0640107B2 (en
Inventor
ヴエルナー・ブレツケル
ヴインフリート・ジークマル
ベルト・ヴルスト
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of JPS60159659A publication Critical patent/JPS60159659A/en
Publication of JPH0640107B2 publication Critical patent/JPH0640107B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil
    • F02P7/0675—Electromagnetic pick-up devices, e.g. providing induced current in a coil with variable reluctance, e.g. depending on the shape of a tooth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/02—Checking or adjusting ignition timing
    • F02P17/04—Checking or adjusting ignition timing dynamically
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
    • G01P3/4807—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general by using circuits for the detection of the pulses delivered by the ignition system of an internal combustion engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P2017/003—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines using an inductive sensor, e.g. trigger tongs

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、２つのコア半部から成るフェライトコアを備
えた点火パルスを検出するやっとこ形トリガ信号発信器
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pincer trigger signal transmitter for detecting ignition pulses with a ferrite core consisting of two core halves.

従来技術 点火パルスを検出するやっとこ形トリが信号発信器は、
相当以前から公知である。公知のやっとこ形トリが信号
発信器は、クランプ挟み形に構成されており、その端部
に２つのシェルコア（５ｃｈａｌｅｎｋｅｒｎ　）を支
持しており、これらのシェルコアは、点火ケーブルをは
さむことができる。公知のやっとこ形トリが信号発信器
では、点火電流を検出するために、巻数のわずかな１つ
のコイルが用いられている。このようにして得られた信
号は適切に増幅され、それからパルスを取出すことがで
きる。その１例は、ドイツ連邦共和国特許出願公開第２
４６００４６号公報に記載されている。Conventional technology The pincer-shaped signal transmitter that detects the ignition pulse is
It has been known for quite some time. The known pincer signal transmitter is designed in the form of a clamp-pincer and carries at its ends two shell cores, in which the ignition cable can be clamped. In known pincer signal transmitters, a single coil with a small number of turns is used to detect the ignition current. The signal thus obtained is suitably amplified and pulses can be extracted from it. One example is the Federal Republic of Germany Patent Application Publication No. 2
It is described in No. 460046.

発明が解決しようとする問題点 従来のやっとこ形トリガ信号発信器は、点火電圧火花頭
部の急峻な信号線に応答し、感度はわずかにしか高める
ことができない。なぜなら、通常、点火ケーブル上の容
量的な漏れ結合は、エラートリがとなる。さらに公知の
やっとこ形トリが信号発信器では、燃焼電流は、火花頭
部の後では検出できない。Problems to be Solved by the Invention The conventional pincer type trigger signal transmitter responds to the steep signal line of the ignition voltage spark head, and the sensitivity can only be increased slightly. This is because capacitive leakage coupling on the ignition cable typically results in errors. Furthermore, with the known pincer signal emitters, the combustion current cannot be detected after the spark head.

本発明の課題は、感度を容易に高めることができ、かつ
燃焼電流を確実に検出できるやっとこ形トリが信号発信
器を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a signal transmitter with a pincer-shaped bird whose sensitivity can be easily increased and whose combustion current can be reliably detected.

問題点を解決するための手段 上記の課題は、本発明によれば、両コア半部上に、高い
インダクタンスを有する巻線を設けることにより解決さ
れる。Means for Solving the Problem The above problem is solved according to the invention by providing windings with high inductance on both core halves.

本発明によれば、さらに両コア半部間に１つのホール素
子が設けられる。According to the invention, a Hall element is further provided between the two core halves.

外側の巻回線を一緒に接続しかつ１つのシールドと接続
するのが特に有利である。こうすることにより、容量的
に点火ケーブルから巻線へ結合される電圧は、シールド
へ導出される。その際、付加的なシールドは不要であっ
て、用いずに済む。両コア半部が対称的に巻かれて℃・
ると有利である。このことにより一方では製作が簡単と
なり、また、２つの巻線体半部の相応の接続の際に、内
部の方に巻か＼わて（・る巻Ｌ１＃！に結合される容量
的に入力結合された電圧成分゛が相互に相殺され従って
評価されない。各巻吻体半部を位相正しく接続すること
は、差動増幅器を用いることにより最も簡単に実現でき
る。It is particularly advantageous to connect the outer windings together and to one shield. By doing this, the voltage that is capacitively coupled from the ignition cable to the winding is directed to the shield. In this case, no additional shielding is required and can be dispensed with. Both core halves are wound symmetrically to
It is advantageous if This simplifies the production on the one hand, and also makes it possible, during the corresponding connection of the two winding halves, to capacitively connect the internal windings to the winding L1#! The input-coupled voltage components cancel each other and are therefore not evaluated. The phase-correct connection of each torso half is most easily achieved by using a differential amplifier.

全インダクタンスに対しては、約１Ｈから５Ｈのインダ
クタンスが特に有利であることがわかった。For the total inductance, an inductance of approximately 1H to 5H has been found to be particularly advantageous.

両コア半部の間に１つのホール素子を設けることにより
、直流電流も非常に緩慢な電流変化も検出できる。By providing one Hall element between both core halves, both direct current and very slow current changes can be detected.

実施例 次に本発明の実施例を図面を用いて詳細に群間する。Example Next, embodiments of the present invention will be explained in detail with reference to the drawings.

第１図に、１つのフェライトコアの２つの半部１，２を
示す。その際、両コア半部は、やっとこ形トリが信号発
信器の１つの部分に収納されている。両コア半部にはそ
れぞれ巻線３．４が設けられている。２つのコア半部は
同じ部分において対称に巻回されている。巻線３，４０
巻幣は大きく、その結果一方では大きな変換が生じ、他
方では巻線３，４の全インダクタンスは１Ｈから５Ｈで
ある。外側に出ている巻回線５．６は一緒に接続されて
共通のアース庫に接続されている。こうした構成により
、容量的に点火ケーブルから各巻線へ結合される電圧は
、直接にアースへ導かれる。巻線３．４の内側の端子接
続線１，８は、差動増幅器９に接続されている。この差
動増幅器９の出力側がらトリが信号を取出すことができ
る。フェライトコア半部１，２は、図示されていないケ
ーブルを取巻いており、このケーブルを通って点火電流
が流れる。そのような点火電流の波形は第２図ａに示さ
れている。また、例えば差動増幅器９の出力側から取出
すことのできる電圧は、第２図すに示されている。外側
の巻回線をアースと接続することにより、対称な巻線体
の外側の位置はシールド作用を有するので、別のシール
ドは采要となる。内部の方に巻回されている巻回線へ結
合される容量的に入力結合された電圧成分は、後置接続
された差動増幅器９へ同相信号として供給され、従って
評価されない。他方、２つの巻線体／半ＨＢの誘導的に
入力結合された′電圧は、位相正しく差入力信号が生ず
るように加算される。従って、容量的な漏れ結合は確実
に抑圧される。このようにして、巻線数が多いことによ
り、感度は一層高くなるが、ノイズは受け難くなる。巻
線３，４の高いインダクタンスにより、トリガ信号発信
器は低域フィルタ特性を有し、その結果、火花の頭部は
十分に除去され、差動増幅器が過励振されることはない
。感度が高くなると共に、第２図１ｂに示すように、燃
焼電流をも確実に解析評価できる。燃焼電流の小さな変
化でも捕捉しなければならない場合は、コア半部１また
は２の脚部の１つにホール素子を固定することができる
。このホール素子を用いれば直流電流および非常に緩慢
な電流変化も捕捉できる。ホール素子を流れる制御電流
により、感度は伝送特性に適−合させることができる。FIG. 1 shows two halves 1, 2 of one ferrite core. In this case, both core halves are accommodated in one part of the signal transmitter by a pincer-shaped bird. Each of the two core halves is provided with a winding 3.4. The two core halves are wound symmetrically in the same area. Winding wire 3,40
The windings are large, resulting in large transformations on the one hand, and on the other hand the total inductance of the windings 3, 4 is from 1H to 5H. The outer windings 5.6 are connected together and connected to a common ground source. With this arrangement, the voltage capacitively coupled from the ignition cable to each winding is routed directly to ground. The terminal connections 1, 8 inside the winding 3.4 are connected to a differential amplifier 9. A signal can be extracted from the output side of the differential amplifier 9. The ferrite core halves 1, 2 enclose a cable (not shown) through which the ignition current flows. The waveform of such an ignition current is shown in FIG. 2a. Further, for example, the voltage that can be extracted from the output side of the differential amplifier 9 is shown in FIG. By connecting the outer winding to earth, the outer position of the symmetrical winding has a shielding effect, so that a further shield is essential. The capacitively input-coupled voltage components that are coupled into the internally wound windings are fed as common-mode signals to the downstream differential amplifier 9 and are therefore not evaluated. On the other hand, the inductively input-coupled 'voltages of the two windings/half-HBs are summed in such a way that a phase-correct differential input signal results. Therefore, capacitive leakage coupling is reliably suppressed. In this way, the increased number of windings provides higher sensitivity, but less susceptibility to noise. Due to the high inductance of the windings 3, 4, the trigger signal emitter has a low-pass filter characteristic, so that the spark head is sufficiently rejected and the differential amplifier is not overexcited. As the sensitivity increases, combustion current can also be reliably analyzed and evaluated, as shown in FIG. 2, 1b. If even small changes in the combustion current have to be captured, a Hall element can be fixed on one of the legs of the core half 1 or 2. Using this Hall element, it is possible to capture direct current and very slow current changes. By means of a control current flowing through the Hall element, the sensitivity can be adapted to the transmission characteristics.

発明の効果 本発明によるやっとこ形トリが信号発信器によれば、や
っとこ形トリが信号発信器の感度を容易に高めることが
でき、また低い固有共振周波数によって燃焼電流が検出
できる。また本発明によれば、巻線の高い巻回数により
高変換でき、その結果付加的な変圧器は用いずに済み、
また、巻線の高い巻回数によりやっとこ形トリが信号発
信器の低域フィルタ特性が生じ、その結果点火電圧火花
頭部の振幅は著しく低減される。さらに感度が一層高（
なると同時に障害の影響を受けにくくなる。Effects of the Invention According to the pincer-shaped signal transmitter according to the present invention, the pincer-shaped bird can easily increase the sensitivity of the signal transmitter, and the combustion current can be detected by the low natural resonance frequency. Furthermore, according to the present invention, high conversion is possible due to the high number of turns of the winding, so that no additional transformer is required.
Also, the high number of turns of the winding causes a low-pass filter characteristic of the signal transmitter, so that the amplitude of the ignition voltage spark head is significantly reduced. Furthermore, the sensitivity is even higher (
At the same time, it becomes less susceptible to obstacles.

また、ホール素子を付加することにより、直流電流や非
常に緩慢な電流変化も検出できる。Furthermore, by adding a Hall element, it is possible to detect direct current and very slow current changes.

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

第１図は、本発明の実施例を示す図、第２図は、本発明
を説明するためのパルス線図を示す１．２・・・フェラ
イトコア半部、３，４・・・巻線、５，６・・外側の巻
回線、７，８・・・内側の端子接続線、９・・・差動増
幅器 第１頁の続き ＠発明者　ベルト働ヴルスト　ドイFIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a pulse diagram for explaining the present invention. 1.2... Ferrite core half part, 3, 4... Winding , 5, 6...Outer winding wire, 7, 8...Inner terminal connection wire, 9...Continuation of differential amplifier page 1 @Inventor Belt-Works Doi

Claims (1)

【特許請求の範囲】[Claims] １．２つのコア半部で構成されたフェライトコアを備え
た点火パルスを検出するやっとこ形トリガ信号発信器に
おいて、両コア半部（１，２）上に、高いインダクタン
スを有スる巻ｉ（３，４）が設けられていることを特徴
とする、やっとこ形トリが信号発信器。 ２、外側の巻回＃（５，６）が−緒に接続されておりか
つシール団と接続されている、特許請求の範囲第１項記
載のやっとこ形トリが信号発信器。 ６、各コア半部（１，２）に枳が対称に巻かれている、
特許請求の範囲第１項または第２項記載のやっとこ形ト
リが信号発信器。 ４、巻線（３，４）の端子接続縁（７，８）が、差動増
幅器（９）に接続されている、特許請求の範囲第６項記
載の十つとこ形トリガ信号発信器。 ５、各コイルのインダクタンスが、合計で１Ｈから５Ｈ
の範囲にある、特許請求の範囲第１項から第４項までの
いずれかに記載のやっとこ形トリが信号発信器。 ６、２つのコア半部で構成されたフェライトコアな備え
た、点火パルスを検出するやっとこ形トリガ信号発信器
において、両コア半部（１，２）の間に１つのホール素
子が設けられていることを特徴とする、やっとこ形トリ
が信号発信器。1. In a pincer type trigger signal transmitter for detecting ignition pulses with a ferrite core consisting of two core halves, on both core halves (1, 2) there is a winding i (with high inductance) 3, 4), the signal transmitter is a pincer-shaped bird. 2. The signal transmitter according to claim 1, wherein the outer windings #(5, 6) are connected together and connected to the seal group. 6. Each core half (1, 2) is symmetrically wrapped with koji,
A signal transmitter comprising a pincer-shaped bird according to claim 1 or 2. 4. A ten-point trigger signal generator according to claim 6, wherein the terminal connection edges (7, 8) of the windings (3, 4) are connected to a differential amplifier (9). 5. The total inductance of each coil is 1H to 5H.
A signal transmitter having a pincer-shaped bird according to any one of claims 1 to 4, which falls within the range of . 6. In a pincer-shaped trigger signal transmitter for detecting an ignition pulse, which is equipped with a ferrite core composed of two core halves, one Hall element is provided between the two core halves (1, 2). The signal transmitter is a barely-there-shaped bird.
JP60001566A 1984-01-12 1985-01-10 Current measuring transmitter Expired - Lifetime JPH0640107B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3400787.3 1984-01-12
DE19843400787 DE3400787C2 (en) 1984-01-12 1984-01-12 Current clamp

Publications (2)

Publication Number Publication Date
JPS60159659A true JPS60159659A (en) 1985-08-21
JPH0640107B2 JPH0640107B2 (en) 1994-05-25

Family

ID=6224734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60001566A Expired - Lifetime JPH0640107B2 (en) 1984-01-12 1985-01-10 Current measuring transmitter

Country Status (2)

Country Link
JP (1) JPH0640107B2 (en)
DE (1) DE3400787C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012189572A (en) * 2011-02-25 2012-10-04 Toyota Central R&D Labs Inc Current measurement probe

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4415768C2 (en) * 1994-05-04 1998-05-20 Siemens Ag Device for recognizing ignition times of a gasoline engine
DE4436574A1 (en) 1994-10-13 1996-04-18 Bosch Gmbh Robert Device for detecting ignition signals
DE19732088A1 (en) * 1997-07-25 1999-02-11 Bosch Gmbh Robert Device for determining the speed of an internal combustion engine
DE19822315A1 (en) * 1998-05-19 1999-12-09 Bosch Gmbh Robert Trigger pliers for the detection of high voltage pulses

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5357983U (en) * 1976-10-19 1978-05-17
JPS53161675U (en) * 1977-05-23 1978-12-18
JPS5653540U (en) * 1979-09-29 1981-05-11

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD56860A (en) *
DE2460046C2 (en) * 1974-12-19 1983-03-17 Robert Bosch Gmbh, 7000 Stuttgart Pulse shaping circuit for devices for checking motor vehicles
DE2735054C2 (en) * 1977-08-03 1979-06-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Clip-on ammeter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5357983U (en) * 1976-10-19 1978-05-17
JPS53161675U (en) * 1977-05-23 1978-12-18
JPS5653540U (en) * 1979-09-29 1981-05-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012189572A (en) * 2011-02-25 2012-10-04 Toyota Central R&D Labs Inc Current measurement probe

Also Published As

Publication number Publication date
DE3400787A1 (en) 1985-07-25
DE3400787C2 (en) 1995-09-14
JPH0640107B2 (en) 1994-05-25

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