JPS60135665A - High energy ignition device - Google Patents

High energy ignition device

Info

Publication number
JPS60135665A
JPS60135665A JP24400183A JP24400183A JPS60135665A JP S60135665 A JPS60135665 A JP S60135665A JP 24400183 A JP24400183 A JP 24400183A JP 24400183 A JP24400183 A JP 24400183A JP S60135665 A JPS60135665 A JP S60135665A
Authority
JP
Japan
Prior art keywords
converter
ignition coil
ignition
coil
iron core
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
JP24400183A
Other languages
Japanese (ja)
Inventor
Hiroshi Watanabe
博 渡辺
Takashi Yoshinari
吉成 孝
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP24400183A priority Critical patent/JPS60135665A/en
Publication of JPS60135665A publication Critical patent/JPS60135665A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02PIGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P3/00Other installations

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

PURPOSE:To make the ignition device miniaturized and prominent in the insulating property thereof by a method wherein a stiffening plate, to which the iron core of an ignition coil is fixed, is provided with a protuberance and a recess, provided on a case accommodating a DC-DC converter 8, is fitted to the protuberance. CONSTITUTION:The stiffening plate, to which the iron core 3c of the ignition coil 3 is fixed, is provided with the protuberance 3f. The recess 8j for inserting the protuberance 3f is provided at a part of the outside of the case 8i for the DC-DC converter 8. The ignition coil 3 and the transformer 8a of the DC-DC converter are fixed integrally by inserting the protuberance 3f into the recess 8j and principal wirings are effected, thereafter, injection molding is effected so as to integrate them with forming resin 14. According to this method, the high energy ignition device, having a small size and prominent in insulating property as well as productivity may be provided.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は内燃機関の点火装置に係るもので、特に高エネ
ルギー点火装置の改良に関するものでおる。
DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an ignition system for an internal combustion engine, and more particularly to an improvement in a high-energy ignition system.

〔発明の背景〕[Background of the invention]

点火装置は内燃機関の混合気に火花放電による点火を行
い、爆発燃焼を行わせる装置であるが、内燃機関の初期
燃焼に重要な影響を持っており、点火エネルギーを高エ
ネルギー化することによシ、燃焼効率を向上させ、燃料
消費量の低減や出力の向上を計ることができる。
The ignition device is a device that ignites the air-fuel mixture of an internal combustion engine by spark discharge, causing explosive combustion.It has an important influence on the initial combustion of the internal combustion engine, and it is effective by increasing the ignition energy. By improving combustion efficiency, it is possible to reduce fuel consumption and increase output.

点火エネルギーの高エネルギー化に関しては、いくつか
の方法が提案されている(例えば特開昭56−1246
72号)が、比較的実用性のある方式として、高電圧発
生源としての点火コイルと、更に点火コイルによる火花
放電の放電電流に重畳して放電々流を増大延長して高エ
ネルギー化するための中高圧電源であるDC−DCコン
バータとを備えた高エネルギー点火装置がある。
Several methods have been proposed for increasing the ignition energy (for example, Japanese Patent Laid-Open No. 56-1246
No. 72) is a relatively practical method that uses an ignition coil as a high voltage generation source, and further superimposes it on the discharge current of the spark discharge from the ignition coil to increase and extend the discharge current to increase energy. There is a high-energy ignition device equipped with a DC-DC converter, which is a medium-high voltage power source.

しかし、該高エネルギー点火装置は、車体への取付性な
どから、点火コ・イルとDC−DCコンバータを一体化
する必要があった。
However, the high-energy ignition system requires an ignition coil and a DC-DC converter to be integrated in order to be easily attached to a vehicle body.

〔発明の目的〕[Purpose of the invention]

本発明は、以上の点に鑑みなされたもので、小形で、か
つ生産性に優れた一体形の高エネルギー点火装置を提供
することを目的とするものである。
The present invention has been made in view of the above points, and an object of the present invention is to provide an integrated high-energy ignition device that is compact and has excellent productivity.

〔発明の概要〕[Summary of the invention]

本発明は点火コイルの鉄心を固定するあて板に凸部を設
け、この凸部にDC−DCコンバータを収納するケース
に設けられた四部を挿入することによ、D、DC−DC
コンバータを点火コイルに固定することを特徴とする。
The present invention provides a convex part on the cover plate that fixes the iron core of the ignition coil, and inserts four parts provided in the case that houses the DC-DC converter into this convex part.
It is characterized by fixing the converter to the ignition coil.

本発明によれば外装成形の際の樹脂の射出圧力によって
DC−DCコンバータが動くのが防止され、小形で生産
性に優れた塙エネルギー点火装置が提供される。
According to the present invention, a DC-DC converter is prevented from moving due to resin injection pressure during exterior molding, and a small-sized Hanawa energy ignition device with excellent productivity is provided.

〔発明の実施例〕[Embodiments of the invention]

第1図は本発明の高エネルギー点火装置の回路例を示し
ている。1はバッテリ、2はキースイッチ、3は点火コ
イルであC13aは一次コイル、3bは二次コイル、3
cは鉄心である。4はICイグナイタであシ、点火コイ
ル3の一次コイル3aの一次電流11をスイッチングし
て、二次コイル3bに30〜40KVの高電圧v2を発
生させる。5は点火時期検出用のピックアップである。
FIG. 1 shows a circuit example of a high-energy ignition device according to the present invention. 1 is a battery, 2 is a key switch, 3 is an ignition coil, C13a is a primary coil, 3b is a secondary coil, 3
c is the iron core. 4 is an IC igniter which switches the primary current 11 of the primary coil 3a of the ignition coil 3 to generate a high voltage v2 of 30 to 40 KV in the secondary coil 3b. 5 is a pickup for detecting ignition timing.

6は配電器、7は点火プラグ、8は中高圧電源でおるD
C−DCコンバータであシ約2〜5KVの電圧を発生す
る。8aはトランス、8bは一次コイル、8Cは二次コ
イル、8dは鉄心である。
6 is a power distributor, 7 is a spark plug, and 8 is a medium-high voltage power supply D
A C-DC converter generates a voltage of about 2-5 KV. 8a is a transformer, 8b is a primary coil, 8C is a secondary coil, and 8d is an iron core.

8eはスイッチングトランジスタで、1.8fは発振回
路、8gは整流ダイオード、8hはコンデンサである。
8e is a switching transistor, 1.8f is an oscillation circuit, 8g is a rectifier diode, and 8h is a capacitor.

9a〜9fは高圧コードである。9a to 9f are high voltage cords.

第1図に示した高エネルギー点火装置によれば、一般的
な内燃機関の点火装置の点火エネルギーは20〜40m
Jであるのに対し、数倍の放電エネルギーが得られ、内
燃機関の燃焼効率を大幅に向上させることができる。
According to the high-energy ignition system shown in Figure 1, the ignition energy of a typical internal combustion engine ignition system is 20 to 40 m
J, several times the discharge energy can be obtained, and the combustion efficiency of the internal combustion engine can be significantly improved.

第2図は本発明による高エネルギー点火装置の構造を示
す主要部の断面図である。
FIG. 2 is a cross-sectional view of the main parts showing the structure of the high-energy ignition device according to the present invention.

3は点火コイルである。−次コイル3a、二次コイル3
bは巻線後、エポキシレジン等の熱硬化性合成樹脂3d
を真空含浸、加熱硬化し絶縁処理を施している。3Cは
鉄心でありL字形に硅素鋼板を打抜き積層したものを2
組、閉磁路を形成するよう組合せ、両側にあて板3eを
あてて、ピンを圧入プレスし固定している。あて板3e
にはDC−DCコンバータを固定するだめの凸部3fを
有している。
3 is an ignition coil. - Secondary coil 3a, secondary coil 3
b is a thermosetting synthetic resin such as epoxy resin after winding 3d
is vacuum impregnated, heated and hardened, and then subjected to insulation treatment. 3C is the iron core, which is made by punching and laminating silicon steel plates in an L shape.
They are assembled together to form a closed magnetic path, and pins are press-fitted and fixed with a cover plate 3e placed on both sides. Counting plate 3e
It has a convex portion 3f for fixing the DC-DC converter.

8aはDC−DCコンバーク8のトランスである。8b
は一次コイル、8Cは二次コイルであシ、8dは鉄心で
;わる。これらの部品よIりなるDC−DCコンバータ
のトランス8aは合成樹脂によシ、成形されたケース8
iに収納され、該ケース81にはエポキシレジンを注入
、加熱硬化し絶縁が施されている。ケース8iの外側の
一部には、点火コイル3の鉄心あて板3dの凸部3eを
挿入するための凹部8jが設けて有り、凸部3eを四部
8j上挿入することにより、点火コイル3とDC−DC
コンバータのトランス8aを一体に固定している。
8a is a transformer of the DC-DC converter 8. 8b
is the primary coil, 8C is the secondary coil, and 8d is the iron core. The transformer 8a of the DC-DC converter, which is made up of these parts, has a case 8 molded from synthetic resin.
The case 81 is insulated by injecting epoxy resin and hardening it by heating. A part of the outside of the case 8i is provided with a recess 8j for inserting the protrusion 3e of the core plate 3d of the ignition coil 3. By inserting the protrusion 3e above the fourth part 8j, the ignition coil 3 and DC-DC
The transformer 8a of the converter is fixed integrally.

8gはダイオードであ多点火コイル3の二次コイル3b
の低圧側とDC−DCコンバータ8の二次コイル8Cの
高圧側の間に接続している。8hはコンデンサであ、9
、DC−DCコンバータ8の二次コイル8Cの高圧側と
点火コイル3の鉄心3Cの間に接続されている。
8g is a diode and is the secondary coil 3b of the multi-ignition coil 3.
It is connected between the low voltage side of the secondary coil 8C of the DC-DC converter 8 and the high voltage side of the secondary coil 8C. 8h is a capacitor, 9
, is connected between the high voltage side of the secondary coil 8C of the DC-DC converter 8 and the iron core 3C of the ignition coil 3.

10は一次端子であシ、点火コイル3の一次コイル3a
と接続されている。11は電源端子であシ、点火コイル
3の一次コイル3aの電源側と、DC−DCコンバータ
8の一次コイル8bのi[側とに接続されている。12
はDC−DCコンバータ8の制御端子であり、DC−D
Cコンバータ8の一次コイル8bの一方に接続されてい
る。
10 is the primary terminal, the primary coil 3a of the ignition coil 3
is connected to. Reference numeral 11 denotes a power supply terminal, which is connected to the power supply side of the primary coil 3a of the ignition coil 3 and the i[ side of the primary coil 8b of the DC-DC converter 8. 12
is a control terminal of the DC-DC converter 8, and DC-D
It is connected to one side of the primary coil 8b of the C converter 8.

13は高圧端子であ多点火コイル3の二次コイル3bの
高圧側に接続されている。以上のように、点火コイル3
にDC−DCコンバータ8を一体固定化し、主要結線を
行ったのち、成形樹脂14で一体に射出成形を行ってい
る。成形樹脂14はガラス人、j)PBTなどの絶縁性
が高く、耐熱性及び機械的強度の優れた合成樹脂を用い
ている。
A high voltage terminal 13 is connected to the high voltage side of the secondary coil 3b of the multi-ignition coil 3. As mentioned above, ignition coil 3
After the DC-DC converter 8 is integrally fixed and the main wire connections are made, injection molding is performed integrally with the molding resin 14. The molding resin 14 is made of a synthetic resin having high insulation properties, excellent heat resistance, and mechanical strength, such as PBT.

第3図は本発明による高エネルギー点火装置の構造を示
す斜視図である。
FIG. 3 is a perspective view showing the structure of a high-energy ignition device according to the present invention.

15はDC−DCコンバータ8のスイッチングトランジ
スタF3e、発振部8fを収納しているケースであシ、
放熱を良くするためアルミダイカストで作られている。
15 is a case housing the switching transistor F3e of the DC-DC converter 8 and the oscillator 8f;
Made of die-cast aluminum for better heat dissipation.

また、このスイッチングトランジスタ8 eはDc−]
)Cコンバータ8の一次コイル8bと制御端子13の間
はリード線16で接続している。
Moreover, this switching transistor 8e is Dc-]
) The primary coil 8b of the C converter 8 and the control terminal 13 are connected by a lead wire 16.

17は取付はバンドであシ点火コイル3の鉄心3Cに締
付けられておシ、鉄心3cを接地する役目も兼ねている
17 is attached with a band and is tightened to the iron core 3C of the ignition coil 3, and also serves to ground the iron core 3c.

〔発明の効果〕〔Effect of the invention〕

以上詳述した様に、本発明の高エネルギー点火装置は、
DC−DCコンバータ8のトランス8aを点火コイル3
の鉄心3cに、予め固定一体化したのち、外側を成形樹
脂14で一体に射出成形を行っているため、射出成形の
際の圧力によってDC−DCコンバータ8のトランス8
aが動くのを、完全に防止することができ、絶縁距離を
必要最小限とすることができるため、小形で絶縁性に優
れ、かつ、生産性に優れた高エネルギー点火装置を提供
することができる。
As detailed above, the high energy ignition device of the present invention is
The transformer 8a of the DC-DC converter 8 is connected to the ignition coil 3.
The transformer 8 of the DC-DC converter 8 is damaged by the pressure during injection molding because the outside is integrally injection molded with the molded resin 14 after being fixed and integrated with the iron core 3c in advance.
Since it is possible to completely prevent the movement of the a and to minimize the insulation distance, it is possible to provide a high-energy ignition device that is small, has excellent insulation properties, and is highly productive. can.

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

第1図は高エネルギー点火装置の回路例、第2図は本発
明による高エネルギー点火装置の構造を示す主要部断面
図、第3図は第2図の斜視図である。
FIG. 1 is a circuit example of a high-energy ignition device, FIG. 2 is a sectional view of main parts showing the structure of the high-energy ignition device according to the present invention, and FIG. 3 is a perspective view of FIG. 2.

Claims (1)

【特許請求の範囲】 1、点火プラグの電極間に火花放電を生じさせるために
必要な高電圧パルスを発生する点火コイルと、該点火コ
イルで前記点火プラグの電極間に火花放電を生じさせた
後、さらに放電を持続させるだめの中高圧のDC−D 
Cコンバータを備え、かつ前記点火コイルとDC−DC
コンバータを一体に成形してなる点火装置において、 点火コイルの鉄心はL字に切シ抜いた磁性鋼板を多数枚
重ねて形成された鉄心を2個、閉磁路回路を形成するよ
う組合せて構成され、該鉄心を固定する非磁性体のあて
板とを備え、該あて板の一部には凸部が設けられ、該凸
部は、DC−DCコンバータを収納するケースに設けら
れた四部に挿入されることによシ、DC−DCコンパ−
タカ点火コイルに固定され、これらの外側が熱可塑性合
成樹脂により一体に成形されていることを特徴とする高
エネルギー点火装置。
[Claims] 1. An ignition coil that generates a high voltage pulse necessary to generate a spark discharge between the electrodes of a spark plug, and an ignition coil that generates a spark discharge between the electrodes of the spark plug. After that, medium-high voltage DC-D is used to further sustain the discharge.
C converter, and the ignition coil and the DC-DC
In an ignition device formed by integrally molding a converter, the iron core of the ignition coil is composed of two iron cores formed by stacking many L-shaped cut-out magnetic steel plates, which are combined to form a closed magnetic circuit. , a backing plate made of a non-magnetic material for fixing the iron core, a part of the backing plate is provided with a convex part, and the convex part is inserted into four parts provided in a case housing the DC-DC converter. DC-DC converter
A high-energy ignition device fixed to a Taka ignition coil, the outer side of which is integrally molded from thermoplastic synthetic resin.
JP24400183A 1983-12-26 1983-12-26 High energy ignition device Pending JPS60135665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24400183A JPS60135665A (en) 1983-12-26 1983-12-26 High energy ignition device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24400183A JPS60135665A (en) 1983-12-26 1983-12-26 High energy ignition device

Publications (1)

Publication Number Publication Date
JPS60135665A true JPS60135665A (en) 1985-07-19

Family

ID=17112233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24400183A Pending JPS60135665A (en) 1983-12-26 1983-12-26 High energy ignition device

Country Status (1)

Country Link
JP (1) JPS60135665A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63120863A (en) * 1986-11-11 1988-05-25 Nippon Denso Co Ltd Ignition coil for internal combution engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63120863A (en) * 1986-11-11 1988-05-25 Nippon Denso Co Ltd Ignition coil for internal combution engine

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