JPS5815664Y2 - internal combustion engine ignition system - Google Patents
internal combustion engine ignition systemInfo
- Publication number
- JPS5815664Y2 JPS5815664Y2 JP1977164376U JP16437677U JPS5815664Y2 JP S5815664 Y2 JPS5815664 Y2 JP S5815664Y2 JP 1977164376 U JP1977164376 U JP 1977164376U JP 16437677 U JP16437677 U JP 16437677U JP S5815664 Y2 JPS5815664 Y2 JP S5815664Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- combustion engine
- internal combustion
- inductor
- magnetic flux
- 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
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
この考案は、磁気検出素子を用いて点火信号を得て、内
燃機関の点火を行う内燃機関点火装置に関するものであ
る。[Detailed Description of the Invention] This invention relates to an internal combustion engine ignition device that obtains an ignition signal using a magnetic detection element and ignites an internal combustion engine.
従来、この種の装置として第1図に示すものがあった。Conventionally, there has been a device of this type as shown in FIG.
図において、1は図示しない内燃機関により駆動される
回転軸、2はこの回転軸1と共に回転する誘導子、3は
この誘導子2を磁路の一部として構成された磁気回路に
磁束を与える永久磁石、4はこの永久磁石3の磁束を導
く導磁板、5は磁気回路の磁束を検出し該磁束の大きさ
に比例した大きさの電圧信号を発生する磁気検出素子で
あるホール素子、6はこのホール素子5の信号を増巾す
る増巾器、7はイグニションコイル8の電流を断続する
パワートランジスタ、9はバッテリである。In the figure, 1 is a rotating shaft driven by an internal combustion engine (not shown), 2 is an inductor that rotates together with the rotating shaft 1, and 3 is an inductor 2 that provides magnetic flux to a magnetic circuit configured as part of a magnetic path. a permanent magnet; 4 is a magnetically conductive plate that guides the magnetic flux of the permanent magnet 3; 5 is a Hall element that is a magnetic detection element that detects the magnetic flux of the magnetic circuit and generates a voltage signal with a magnitude proportional to the magnitude of the magnetic flux; 6 is an amplifier that amplifies the signal from the Hall element 5; 7 is a power transistor that connects the current to the ignition coil 8; and 9 is a battery.
次に動作について説明する。Next, the operation will be explained.
内燃機関の回転に伴ない回転軸1を介して誘導子2が回
転する。An inductor 2 rotates via a rotating shaft 1 as the internal combustion engine rotates.
方、永久磁石3、導磁板4、誘導子2により、磁気回路
が形成されているので、上記誘導子20回転に伴なって
上記磁気回路を通る磁束φは、第2図の実線のように変
化する。On the other hand, since a magnetic circuit is formed by the permanent magnet 3, the magnetic conduction plate 4, and the inductor 2, the magnetic flux φ passing through the magnetic circuit as the inductor rotates 20 times is as shown by the solid line in FIG. Changes to
又上記磁気回路ρ一部にホール素子5が設置されており
、上記磁束φが、あらかじめ設定された大きさφSのと
きにパワートランジスタ7が導通あるいは非導通となる
ように増巾器6を介して駆動されるので内燃機関の点火
角度に・おいてイグニションコイル8には点火のための
高電圧が発生する。Further, a Hall element 5 is installed in a part of the magnetic circuit ρ, and the magnetic flux φ is connected through an amplifier 6 so that the power transistor 7 becomes conductive or non-conductive when the magnitude φS is set in advance. Since the ignition coil 8 is driven at the ignition angle of the internal combustion engine, a high voltage for ignition is generated in the ignition coil 8.
従来の装置は、以上のように構成されているので回転軸
1のわずかな曲がり等により誘導子2が回転中心に対し
偏心すると磁束φは第2図の点線のようになり、検出さ
れた点火時期が、第2図の△θで表わされた角度分だけ
ずれを生じ、又永久磁石3の温度特性等により、磁気特
性が変化すると、同様な点火時期のずれが生ずる等の欠
点があった。Since the conventional device is configured as described above, if the inductor 2 is eccentric with respect to the rotation center due to a slight bend in the rotating shaft 1, the magnetic flux φ becomes as indicated by the dotted line in Fig. 2, and the detected ignition There is a disadvantage that the ignition timing is shifted by the angle indicated by △θ in Fig. 2, and if the magnetic characteristics change due to the temperature characteristics of the permanent magnet 3, a similar shift in the ignition timing occurs. Ta.
この考案は、上記のような従来のものの欠点を除去する
ためになされたもので、磁気回路を複数とし、これらの
磁束が相互に加算あるいは減算される位置に磁気検出素
子を設置することにより誘導子の偏心等による点火時期
のずれを補正し、より高い精度の点火時期検出を行う内
燃機関点火装置を提供することを目的としている。This idea was made in order to eliminate the drawbacks of the conventional ones as mentioned above.It has a plurality of magnetic circuits and a magnetic detection element is installed at a position where these magnetic fluxes are added or subtracted from each other. It is an object of the present invention to provide an internal combustion engine ignition device that corrects ignition timing deviations due to eccentricity of a child, etc., and detects ignition timing with higher accuracy.
以下、第3図第4図に示す実施例について説明する。The embodiments shown in FIGS. 3 and 4 will be described below.
第3図第4図において、2は磁気変調部2aと非磁気変
調部2bとからなる誘導子、3 a 。In FIG. 3 and FIG. 4, 2 is an inductor consisting of a magnetic modulation section 2a and a non-magnetic modulation section 2b, and 3a.
3bはそれぞれ磁気変調部2aと非磁気変調部2bに空
隙を介して対向する一対の永久磁石で、互いに逆極性に
配置されている。A pair of permanent magnets 3b face the magnetic modulation section 2a and the non-magnetic modulation section 2b with a gap in between, and are arranged with opposite polarities.
10は一対の永久磁石3a 、3bの間に等しい距離を
もって配置された磁極部で、非磁気変調部2bに上述の
空隙と同値の空隙を介して対向している。Reference numeral 10 denotes a magnetic pole part disposed at an equal distance between a pair of permanent magnets 3a and 3b, and facing the non-magnetic modulation part 2b with a gap having the same value as the above-mentioned gap therebetween.
尚一対の永久磁石3a 、3bs導磁板4及び磁極部1
0とによりE字形の磁気回路を構成している。In addition, a pair of permanent magnets 3a, 3bs magnetic conductive plate 4 and magnetic pole part 1
0 constitutes an E-shaped magnetic circuit.
次に、実施例の動作を説明する。Next, the operation of the embodiment will be explained.
一対の永久磁石3a 、3bから導磁板4、磁極部10
及び誘導子2の磁気変調部21と非磁気変調部2bによ
り形成される2つの磁路にはそれぞれφa、φbなる磁
束が通流するのであるが、この磁束φa、φbの最大値
は同値となるように予め設定されている。From the pair of permanent magnets 3a and 3b to the magnetic conduction plate 4 and the magnetic pole part 10
The magnetic fluxes φa and φb flow through the two magnetic paths formed by the magnetic modulation section 21 and the non-magnetic modulation section 2b of the inductor 2, respectively, and the maximum values of the magnetic fluxes φa and φb are the same. It is set in advance so that
而して、誘導子2が回転すれば第5図の実線に示す通り
、φaは磁気変調部2aによりその回転に伴ってその値
が刻々変化し、φbは非磁気変調部2bにより常に一定
なる値となり、従ってホール素子5には誘導子2の回転
に伴ってφa、φbの差【φb−φa)の磁束が通流す
る。When the inductor 2 rotates, as shown by the solid line in FIG. 5, the value of φa changes moment by moment due to the rotation of the inductor 2 due to the magnetic modulation section 2a, and φb is always kept constant due to the non-magnetic modulation section 2b. Therefore, as the inductor 2 rotates, a magnetic flux equal to the difference between φa and φb (φb−φa) flows through the Hall element 5.
そして、ホール素子5は(φb−φa)が基準磁束φS
を越えると作動し増巾器6を介してパワートランジスタ
7を導通あるいは非導通させるのである。Then, in the Hall element 5, (φb-φa) is the reference magnetic flux φS
When the voltage exceeds 1, the power transistor 7 becomes conductive or non-conductive via the amplifier 6.
ここで、例えば誘導子2が偏心して、回転し、その回転
に伴ない一対の永久磁石3a 、3b及び磁極部10と
誘導子2の磁気変調部2aと非磁気変調部2bとの対向
空隙が変化した場合を考えると、φa、φbはそれぞれ
第4図の点線で示されるように部分的に変化するが、ホ
ール素子5には両者の差(φb−φa)の磁束が通流す
るため、偏心によるそれぞれの磁束の誤差は互いに打消
し合い、結局偏心による点火時期への影響はなくなる。Here, for example, the inductor 2 is eccentric and rotates, and as the inductor 2 rotates, the opposing air gap between the pair of permanent magnets 3a, 3b and the magnetic pole part 10, and the magnetic modulating part 2a and non-magnetic modulating part 2b of the inductor 2 increases. Considering the case where φa and φb change partially as shown by the dotted lines in FIG. Errors in the respective magnetic fluxes due to eccentricity cancel each other out, and eventually the eccentricity has no effect on the ignition timing.
同様に磁石の温度特性等による磁気特性の変化による磁
束の誤差も互いに打消し合い点火時期への影響はなくな
るものである。Similarly, errors in magnetic flux caused by changes in magnetic properties due to temperature characteristics of the magnet, etc., cancel each other out and have no effect on the ignition timing.
なか上記実施例では、2個の永久磁石を用いて2つの磁
路を形成する場合について述べたが、1個の永久磁石を
用いて上記の効果を奏するように磁気回路を構成するこ
とも可能であり、要するに複数の磁路を形成し、それら
の磁路に生ずる磁束が互いに加算あるいは減算された位
置にホール素子を設置しさえすれば良い。In the above embodiment, a case was described in which two permanent magnets were used to form two magnetic paths, but it is also possible to configure a magnetic circuit using one permanent magnet so as to achieve the above effects. In short, it is sufficient to form a plurality of magnetic paths and install the Hall elements at positions where the magnetic fluxes generated in these magnetic paths are added or subtracted from each other.
又、磁束の検出は、ホール素子に限らず、増巾器と一体
となったホールICや磁気抵抗素子あるいは信号検出コ
イル等を用いても上記実施例と同等の効果を奏する。Furthermore, the detection of magnetic flux is not limited to the Hall element, but may be performed using a Hall IC integrated with an amplifier, a magnetoresistive element, a signal detection coil, or the like, with the same effect as in the above embodiment.
以上のように、この考案によれば、複数の磁気回路の磁
束が互いに加算あるいは減算される位置に磁気検出素子
を設置するように構成したので、装置が安価にでき、ま
た極めて精度の高い点火時期の検出ができる効果がある
。As described above, according to this invention, the magnetic detection element is installed at a position where the magnetic fluxes of multiple magnetic circuits are added or subtracted from each other, so the device can be made at low cost, and the ignition can be performed with extremely high precision. This has the effect of being able to detect the timing.
第1図は従来の内燃機関点火装置を示す構造図、第2図
は第1図に示す装置の磁束の変化を示す波形図、第3図
はこの考案の一実施例を示す内燃機関点火装置の部分図
、第4図は第3図に示す装置の誘導子2の斜視図、第5
図は第3図に示す装置の磁束の変化を示す波形図である
。
図にかいて、1・・・・・・回転軸、2・・・・・・誘
導子、2a・・・・・・磁気変調部、2b・・・・・・
非磁気変調部、3゜3a、3’b・・・・・・永久磁石
、4・・・・・・導磁板、5・・・・・・ホール素子、
6・・・・・・増巾器、I・・・・・・パワートランジ
スタ、8・・・・・・イグニションコイル、9・・・・
・・バッテリ、10・・・・・・磁極部である。
なお、図中、同一符号は同一、又は相当部分を示す。Fig. 1 is a structural diagram showing a conventional internal combustion engine ignition device, Fig. 2 is a waveform diagram showing changes in magnetic flux of the device shown in Fig. 1, and Fig. 3 is an internal combustion engine ignition device showing an embodiment of this invention. FIG. 4 is a perspective view of the inductor 2 of the device shown in FIG.
The figure is a waveform diagram showing changes in magnetic flux of the device shown in FIG. 3. In the figure, 1...rotating shaft, 2...inductor, 2a...magnetic modulation section, 2b...
Non-magnetic modulation section, 3゜3a, 3'b...Permanent magnet, 4...Magnetic conductive plate, 5...Hall element,
6...Amplifier, I...Power transistor, 8...Ignition coil, 9...
...Battery, 10... Magnetic pole part. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
、この誘導子が磁路の一部として構成された複数の磁気
回路、この磁気回路に、磁束を与える1個又は複数の永
久磁石、及び上記磁気回路の磁束が相互に加算または減
算される位置に設置され磁束の大きさに対応した大きさ
の電圧信号を発生する磁気検出素子を備え、上記磁気検
出素子により得られる信号によって内燃機関の点火を行
う内燃機関点火装置。An inductor that rotates together with a rotating shaft driven by an internal combustion engine, a plurality of magnetic circuits in which the inductor is configured as part of a magnetic path, one or more permanent magnets that provide magnetic flux to the magnetic circuit, and the above. A magnetic detection element is installed at a position where the magnetic flux of the magnetic circuit is added or subtracted from each other and generates a voltage signal of a magnitude corresponding to the magnitude of the magnetic flux, and the internal combustion engine is ignited by the signal obtained by the magnetic detection element. Internal combustion engine ignition system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977164376U JPS5815664Y2 (en) | 1977-12-06 | 1977-12-06 | internal combustion engine ignition system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977164376U JPS5815664Y2 (en) | 1977-12-06 | 1977-12-06 | internal combustion engine ignition system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5488428U JPS5488428U (en) | 1979-06-22 |
JPS5815664Y2 true JPS5815664Y2 (en) | 1983-03-30 |
Family
ID=29161860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1977164376U Expired JPS5815664Y2 (en) | 1977-12-06 | 1977-12-06 | internal combustion engine ignition system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5815664Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491211U (en) * | 1972-04-04 | 1974-01-08 |
-
1977
- 1977-12-06 JP JP1977164376U patent/JPS5815664Y2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491211U (en) * | 1972-04-04 | 1974-01-08 |
Also Published As
Publication number | Publication date |
---|---|
JPS5488428U (en) | 1979-06-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4737710A (en) | Hall-effect array for sensing second spatial derivative of magnetic field | |
US6922052B2 (en) | Measuring device for contactless detecting a ferromagnetic object | |
US7126327B1 (en) | Asymmetrical AMR wheatstone bridge layout for position sensor | |
JPS6349724Y2 (en) | ||
JPH0949740A (en) | Hall effect iron article proximity sensor | |
JPH09329461A (en) | Detector | |
JPH10232242A (en) | Detector | |
US3923030A (en) | Phase sensitive ignition timing system | |
EP0115391A2 (en) | Hall-effect position sensor apparatus | |
JP3487452B2 (en) | Magnetic detector | |
JPS6275313A (en) | Device for generating control signal | |
JP3619156B2 (en) | Magnetic detector | |
JPH10239338A (en) | Detector | |
JPS5815664Y2 (en) | internal combustion engine ignition system | |
JP2742551B2 (en) | Rotation sensor | |
JPH06347526A (en) | Magnetism sensor | |
JP3886434B2 (en) | Torque sensor assembly method | |
US6177793B1 (en) | Magnetic detector which detects a rotational angle of a rotary member | |
JPH074986A (en) | Reference position detector | |
JP2003004484A (en) | Rotation sensor | |
JPH06303752A (en) | Position detecting magnetic circuit of brushless motor | |
US5363829A (en) | Ignition distributor of internal combustion engine | |
JPH05322510A (en) | Throttle position sensor | |
JPH069306Y2 (en) | Position detector | |
JP2002022487A (en) | Magnetic-type rotation angle detecting device |