JPS59103969A - Igniter for internal-combustion engine - Google Patents
Igniter for internal-combustion engineInfo
- Publication number
- JPS59103969A JPS59103969A JP57212631A JP21263182A JPS59103969A JP S59103969 A JPS59103969 A JP S59103969A JP 57212631 A JP57212631 A JP 57212631A JP 21263182 A JP21263182 A JP 21263182A JP S59103969 A JPS59103969 A JP S59103969A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- ignition
- signal
- engine
- voltage
- 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
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
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/155—Analogue data processing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
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関し、特にＤＣ−ＤＣ
コンバータで点火エネルギーを増強する方式の点火装置
における燃費性能向上機能に関する。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 in particular to a DC-DC ignition system.
This invention relates to a fuel efficiency improvement function in an ignition system that uses a converter to increase ignition energy.
（従来技術）
従来のＤＣ−ＤＣコンバークを用（・て点火エネルギー
を増強する点火装置としては１例えば第１図に示すごと
きものがある。（例えば公開特許公報昭５３−１４２４
２号）
第１図にお℃・て、１は電源となるバッテリ、２はキー
スイッチ、３は１次巻線３Ａと２次巻線３Ｂとが分離し
た４端子型の点火コイルである。４は点火時期を検出す
る点火時期センサであり９例えば電磁ピックアンプであ
る。５はトランジスタ点火装置、６は１次電流遮断用の
トランジスタ。(Prior art) There is an ignition device that uses a conventional DC-DC converter to increase ignition energy, for example, as shown in FIG.
No. 2) In Fig. 1, 1 is a battery as a power source, 2 is a key switch, and 3 is a four-terminal ignition coil in which a primary winding 3A and a secondary winding 3B are separated. 4 is an ignition timing sensor for detecting ignition timing, and 9 is, for example, an electromagnetic pick amplifier. 5 is a transistor ignition device, and 6 is a transistor for cutting off the primary current.
７は一２ｋＶ程度の高電圧を発生するＤＣ−ＤＣコンバ
ータである。８は配電器、９Ａ〜９Ｄは各気筒毎に設け
られた点火プラグである。7 is a DC-DC converter that generates a high voltage of about -2 kV. 8 is a power distributor, and 9A to 9D are spark plugs provided for each cylinder.
キースイッチ２がオンにされている作動時にお（・では
１点火時期に点火時期センサ４が点火信号を出力すると
、トランジスタ点火装置５が信号を出力してトランジス
タ６を、オフにする。そのため点火コイル３０１次電流
が遮断され、２次巻線３Ａに一数１０ ｋＶＯ高電圧が
発生し、それが配電器８を介して該当する点火プラグに
印加され、その点火プラグで火花放電を発生ずる。When the key switch 2 is turned on and the ignition timing sensor 4 outputs an ignition signal at the first ignition timing, the transistor ignition device 5 outputs a signal to turn off the transistor 6. The primary current of the coil 30 is cut off, and a high voltage of several tens of kVO is generated in the secondary winding 3A, which is applied to the corresponding spark plug via the power distributor 8, causing a spark discharge at the spark plug.
一方、ＤＣ−ＤＣコンバータ７から出力される−２ ｋ
Ｖ程度の高電圧は、２次巻線３Ｂを介して常時配電器８
に印加されている。そして前記のごとく放電が生じると
、 Ｄｃ−Ｄｃコンバータ７からの高電圧によって放電
が継続する。そのため通常の点火装置では２〜４ ｍｓ
である放電継続時間が１０〜２０ ｍｓと数倍に伸びる
ので１点火エネルギーが大幅に増加し、稀薄な混合気に
対しても確実に着火することが出来る。したがって従来
より稀薄な混合気で機関を運転することが出来るので、
燃費性能を向上させることが出来る。On the other hand, −2 k output from the DC-DC converter 7
A high voltage of about V is constantly transmitted to the power distributor 8 via the secondary winding 3B.
is applied to. When the discharge occurs as described above, the discharge continues due to the high voltage from the Dc-Dc converter 7. Therefore, with a normal ignition system, it takes 2 to 4 ms.
Since the discharge duration is increased several times to 10 to 20 ms, the ignition energy per ignition is greatly increased, and even a lean mixture can be reliably ignited. Therefore, the engine can be operated with a leaner mixture than before.
Fuel efficiency can be improved.
しかし上記のごとき従来装置においては、キー１スイツ
チ２がオンにされている作動時には、ＤＣ−ＤＣコンバ
ータ７が常時動作する構成となっており、ＤＣ！−ＤＣ
コンバータ７の消費電力が無視出来ない程度となる。However, in the conventional device as described above, the DC-DC converter 7 is always operated when the key 1 switch 2 is turned on, and the DC! -DC
The power consumption of converter 7 becomes to a level that cannot be ignored.
一般に１点火エネルギーを増大することによって燃費改
善に大きな効果があるのは、燃焼が不安定になりやすい
アイドル状態のときであり、それ以外のときには、それ
ほどの効果は生じない。In general, increasing the ignition energy has a large effect on improving fuel efficiency when the engine is in an idling state, where combustion tends to become unstable, and it does not have much of an effect at other times.
したがって上記のようにＤＣ！−ＤＣコンバータ７を常
時作動させておくと、それによる燃費節減効果がＤＣ−
ＤＣ！コンバータ７の消費電力のために減殺され、全体
としての燃費節減効果が低下してしまうという問題があ
る。Therefore, as mentioned above, DC! -If the DC converter 7 is kept operating all the time, the resulting fuel saving effect will be DC-
DC! There is a problem in that the power is reduced due to the power consumption of the converter 7, and the overall fuel saving effect is reduced.
（発明の目的）
本発明は上記の問題を解決するためになされたものであ
り、稀薄混合気で安定、かつ確実に着火させることが出
来、しかも燃費性能を更に向上させることの出来る点火
装置を提供することを目的とする。(Object of the Invention) The present invention was made to solve the above problems, and provides an ignition device that can stably and reliably ignite a lean mixture and further improve fuel efficiency. The purpose is to provide.
（発明の概要） 上記の目的を達成するため本発明においては。(Summary of the invention) In order to achieve the above object, the present invention has the following features.
ＤＣ−ＤＣコンバータによる点火エネルギー増強の効果
が特に大きいアイドル状態時を検出する手段と、アイド
ル状態時にのみＤＣ−ＤＣコンバータを作動させる手段
とを備え、ＤＣ−ＤＣコンバータを、効果の大きいとき
にだけ作動させ、それ以外のときには停止させることに
より、無駄な電力消費をなくして全体の燃費節減効果を
向上させるように構成している。The method includes a means for detecting an idle state when the effect of ignition energy enhancement by the DC-DC converter is particularly large, and a means for operating the DC-DC converter only during the idle state, and a means for operating the DC-DC converter only when the effect is large. By operating the system and stopping it at other times, the system is configured to eliminate wasteful power consumption and improve the overall fuel saving effect.
（発明の実施例）
第２図は本発明の一実施例の回路図であり、第１図と同
符号は同一物を示す。また第３図は第２図の回路の出力
波形図であり、８１〜Ｓ６は第２図の同符号を付した個
所の出力波形を示す。(Embodiment of the Invention) FIG. 2 is a circuit diagram of an embodiment of the present invention, and the same reference numerals as in FIG. 1 indicate the same components. 3 is an output waveform diagram of the circuit shown in FIG. 2, and 81 to S6 indicate the output waveforms of the portions with the same reference numerals in FIG. 2.
第２図において、ＤＣ−ＤＣ！コンノく一夕７は。In FIG. 2, DC-DC! Konnoku Ichiyo 7 is.
スイッチング用のトランジスタ７Ａ、７Ｂ、昇圧トラン
ス７０．整流用のダイオード７Ｄ及びコンデンサ７Ｅか
ら構成された他励式のコンノく一夕であり、ゲート回路
１３を介して与えられる発振器１２の信号に応じてトラ
ンジスタ７Ａ、７Ｂが交げにオンになることにより、バ
ッテリ１から与えられた直流＋２Ｖを一２ｋＶ程度に昇
圧、整流して出力する。Switching transistors 7A, 7B, step-up transformer 70. This is a separately excited type circuit consisting of a rectifying diode 7D and a capacitor 7E, and the transistors 7A and 7B are turned on alternately in response to the signal from the oscillator 12 given through the gate circuit 13. DC +2V given from battery 1 is boosted to about -2kV, rectified and output.
また周波数−電圧変換器１０は、トランジスタ点火装置
５の信号Ｓ２の周波数を電圧に変換し、信号Ｓ８として
出力する。Further, the frequency-voltage converter 10 converts the frequency of the signal S2 of the transistor ignition device 5 into a voltage, and outputs it as a signal S8.
上記の信号Ｓ２は９機関の回転に同期（４サイクル４気
筒機関では、１回転に２回出力）して出力されるから、
信号Ｓｌｌの電圧値は機関の回転速度に比例した値とな
る。The above signal S2 is output in synchronization with the rotation of the 9 engines (in a 4-cycle 4-cylinder engine, it is output twice per rotation), so
The voltage value of the signal Sll is proportional to the rotational speed of the engine.
次に比較器１１は１機関のアイドル回転速度（例えば８
００ ｒｐｍ ）に対応した基準値ｖｓと人力する信号
Ｓ３とを比較し、信号Ｓ８の値が基準値ｖ８より大きな
場合は“＋１ｔｔ、それ以下の場合は“０″となる信号
Ｓ４を出力する。Next, the comparator 11 calculates the idle rotation speed of one engine (for example, 8
00 rpm) is compared with the manually input signal S3, and if the value of the signal S8 is greater than the reference value v8, a signal S4 of "+1tt" is output, and if it is less than that, a signal S4 of "0" is output.
ゲート回路１３は、信号Ｓ４が“°０″の場合は発振器
１２の信号を通過させ、信号Ｓ４が“°１”の場合は遮
断する。The gate circuit 13 allows the signal of the oscillator 12 to pass when the signal S4 is "°0", and cuts it off when the signal S4 is "°1".
したがってＤＣ−ＤＣコンバータ７は１機関がアイドル
状態である場合にのみ動作し１機関の回転速度が上昇す
ると自動的に停止することになる上記のように第２図の
回路では、ＤＣ−ＤＣコンバータによる点火エネルギー
増強の効果の大きも・アイドル状態時にのみ、ＤＣ−Ｄ
Ｃ！コンバータを作動させ、効果が低下する回転域では
、ＤＣｊ−ＤＣコンバータを自動的に停止させることが
出来る。Therefore, the DC-DC converter 7 operates only when one engine is in an idle state, and automatically stops when the rotational speed of one engine increases.As described above, in the circuit shown in FIG. The effect of boosting ignition energy by DC-D is also large.
C! It is possible to operate the converter and automatically stop the DCj-DC converter in a rotation range where the effect decreases.
なお上記の説明では、アイドル状態を検出する手段とし
て１点火信号を周波数−電圧変換したのち、基準値と比
較する方法を例示したが１機関の吸入負圧、アクセル開
度、車速等から判断しても良い。In the above explanation, as a means of detecting the idling state, a method was exemplified in which one ignition signal is frequency-voltage converted and then compared with a reference value. It's okay.
またＤＣ−ＤＣコンバータの作動を制御する手段として
は、電源（バッテリ］）と］） Ｃ−Ｄ Ｃコンバータ
間にスイッチング回路（リレー等）を挿入し、電源回路
な遮断するように構成しても良し・（発明の効果）
以上説明したごとく本発明によれば、ＤＣ−ＤＣコンバ
ータによる点火エネルギー増強の効果の大きいアイドル
状態時にのみ、ＤＣ−ＤＣコンバータを作動させ、効果
が低下する回転域ではＤ Ｃ−ＤＣコンバータを自動的
に停止させるように構成しているので、無駄な電力消費
をなくして燃費性能を更に向上させることが出来るとい
う効果がある。In addition, as a means to control the operation of the DC-DC converter, a switching circuit (relay, etc.) may be inserted between the power source (battery) and the C-DC converter to shut off the power supply circuit. Good - (Effects of the Invention) As explained above, according to the present invention, the DC-DC converter is operated only in the idle state where the ignition energy enhancement effect by the DC-DC converter is large, and the D Since the C-DC converter is configured to automatically stop, there is an effect that wasteful power consumption can be eliminated and fuel efficiency can be further improved.
第１図は従来の点火装置の回路図、第２図は本発明の一
実施例の回路図、第３図は第２図の回路の出力波形図で
ある。
符号の説明
１・・バッテリ ２・・・キースイッチ
３・・点火コイル ３Ａ・・１次巻線３Ｂ・
・・２次巻線 ４・・・点火時期センサ５・
°゛トランジスタ点火装置 ６・・−トランジスタ７°
−１’Ｊ Ｃ−１） Ｃコンバータ ８・・・配電器９
Ａ〜９Ｄ・・点火プラグ
１０・周波数−電圧変換器 １１・・比較器１２
発振器 １３・・ゲート回路代理人弁理
士 中 村 純之助FIG. 1 is a circuit diagram of a conventional ignition device, FIG. 2 is a circuit diagram of an embodiment of the present invention, and FIG. 3 is an output waveform diagram of the circuit shown in FIG. Explanation of symbols 1...Battery 2...Key switch 3...Ignition coil 3A...Primary winding 3B...
・Secondary winding 4 ・Ignition timing sensor 5・
°゛Transistor ignition device 6...-transistor 7°
-1'J C-1) C converter 8...Distributor 9
A~9D...Spark plug 10, frequency-voltage converter 11...Comparator 12
Oscillator 13... Gate circuit agent Junnosuke Nakamura
Claims (1)
コイルと１点火時期に上記点火コイルの１次電流を遮断
して２次巻線に高電圧を発生させる手段と、上記２次巻
線の一端に接続され各気筒の点火プラグに高電圧を分配
する配電器と、」１記２次巻線の他の一端と接地間に接
続された直流の高電圧発生手段とを備えた点火装置にお
いて、内燃機関のアイドル状態を検出する手段と、該手
段の信号を受はアイドル状態時にのみ上記高電圧発生手
段を動作させる手段とを備えたことを特徴とする題記装
置。1. A four-terminal ignition coil in which a primary winding and a secondary winding are separated, and means for cutting off the primary current of the ignition coil at one ignition timing to generate a high voltage in the secondary winding; a power distribution device connected to one end of the secondary winding and distributing high voltage to the spark plugs of each cylinder; and a DC high voltage generating means connected between the other end of the secondary winding and ground. An ignition device comprising means for detecting an idle state of an internal combustion engine, and means for receiving a signal from the means and operating the high voltage generating means only in the idle state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57212631A JPS59103969A (en) | 1982-12-06 | 1982-12-06 | Igniter for internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57212631A JPS59103969A (en) | 1982-12-06 | 1982-12-06 | Igniter for internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59103969A true JPS59103969A (en) | 1984-06-15 |
Family
ID=16625859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57212631A Pending JPS59103969A (en) | 1982-12-06 | 1982-12-06 | Igniter for internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59103969A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0359733U (en) * | 1989-10-13 | 1991-06-12 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4925332A (en) * | 1972-06-30 | 1974-03-06 | ||
| JPS57165669A (en) * | 1981-04-02 | 1982-10-12 | Mitsubishi Electric Corp | Internal combustion engine ignition device |
-
1982
- 1982-12-06 JP JP57212631A patent/JPS59103969A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4925332A (en) * | 1972-06-30 | 1974-03-06 | ||
| JPS57165669A (en) * | 1981-04-02 | 1982-10-12 | Mitsubishi Electric Corp | Internal combustion engine ignition device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0359733U (en) * | 1989-10-13 | 1991-06-12 |
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