JPS5851275A - Igniting apparatus for internal-combustion engine - Google Patents
Igniting apparatus for internal-combustion engineInfo
- Publication number
- JPS5851275A JPS5851275A JP15024781A JP15024781A JPS5851275A JP S5851275 A JPS5851275 A JP S5851275A JP 15024781 A JP15024781 A JP 15024781A JP 15024781 A JP15024781 A JP 15024781A JP S5851275 A JPS5851275 A JP S5851275A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- fuel
- injection
- chamber
- combustion engine
- 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
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/001—Ignition installations adapted to specific engine types
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Ignition Timing (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は内燃機関点火装置に関するものであり、例え
ば燃料としてアルコールを用いた内燃機関の点火装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ignition device for an internal combustion engine, for example, an ignition device for an internal combustion engine using alcohol as fuel.
一般にジーゼルエンジンで燃料をアルコールに変えると
、圧縮空気の圧縮熱だけでは着火が困難となる。そこで
第１図に示すように燃料室に点火栓を設け、着火を確実
に行うようにしている。Generally, when the fuel in a diesel engine is changed to alcohol, it is difficult to ignite it using only the compression heat of the compressed air. Therefore, as shown in FIG. 1, an ignition plug is provided in the fuel chamber to ensure ignition.
第１図は一般的な内燃機関点火装置を示す側断面図であ
る。第１図において、シリンダ（１）は燃料であるアル
コールを圧縮して点火する室を構成するものである。吸
気管（２）はシリンダ（１）内に空気を吸入する管で、
空気の吸入を制御する吸気弁（３）が設けられている。FIG. 1 is a side sectional view showing a general internal combustion engine ignition device. In FIG. 1, a cylinder (1) constitutes a chamber in which alcohol, which is fuel, is compressed and ignited. The intake pipe (2) is a pipe that sucks air into the cylinder (1).
An intake valve (3) is provided to control the intake of air.
排気管（４）はシリンダー（１）内においてアルコール
の燃焼によって生じるガスを排気するもので、ガスの排
気を制御する排気弁（５）が設けられている。噴射弁（
６）はシリンター（１）内にアルコールを噴射するもの
で、噴射ポンプ（７）によってアルコールが燃料導管（
８）を介して供給され噴射するものである。ピストン（
９）はシリンダー（１）内を図中の上下方向に摺動する
ものである。点火栓（ＩＯはピストン（９）が図中のほ
ぼ上限時（こ来た時に、シリンダー（１）内のアルコー
ルｌこ点火するものである。The exhaust pipe (4) is for exhausting gas generated by combustion of alcohol in the cylinder (1), and is provided with an exhaust valve (5) for controlling gas exhaust. Injection valve (
6) injects alcohol into the cylinder (1), and the injection pump (7) injects alcohol into the fuel conduit (
8) and is injected. piston(
9) slides in the cylinder (1) in the vertical direction in the figure. The ignition plug (IO) ignites the alcohol in the cylinder (1) when the piston (9) reaches approximately the upper limit shown in the figure.
次１ここの動作を説明する。今、吸気弁（３）が開きピ
ストン（９）が下降すると、シリンダ（１）内に空気が
入る。次にピストン（９）が上昇し、吸入空気を圧縮す
る。この圧縮行程の終期において噴射ポンプ（７）がア
ルコール圧力し、噴射弁（６）からアルコールがシリン
ダー（１）内に噴射されると共に、点火栓αＱによって
アルコールに着火される。Next 1. The operation here will be explained. Now, when the intake valve (3) opens and the piston (9) descends, air enters the cylinder (1). The piston (9) then rises and compresses the intake air. At the end of this compression stroke, the injection pump (7) applies alcohol pressure, alcohol is injected into the cylinder (1) from the injection valve (6), and the alcohol is ignited by the ignition plug αQ.
しかしながら上記のような内燃機関は、シリンダー（１
）への空気吸入後、圧縮行程へ移り、圧縮行程の終期に
おいてアルコールを噴射するものであるが、噴射時点は
機関回転数によって変化する。However, the internal combustion engine as described above has a cylinder (1
), the engine moves to the compression stroke, and alcohol is injected at the end of the compression stroke, but the injection point changes depending on the engine speed.
従って点火時点も機関回転数に応じて変えるとよいが、
アルコールの噴射時点と点火時点との関係を最適に保つ
のは困難であった。Therefore, it is a good idea to change the ignition point according to the engine speed.
It has been difficult to maintain an optimal relationship between the alcohol injection point and the ignition point.
このため従来では第２図で詳細に説明するようｔこ、点
火時点はアルコールの噴射時点よりも早くし、且つ点火
火花の継続時間を長くするため、点火栓０Ｑとして多重
火花点火装置を用いていた。第２図は従来の多重火花点
火装置の説明図であり、１、第２図（ａ）はアルコール
の噴射時点、噴射量を示す図で、横軸に時間を縦軸に噴
射量を取っており、第２図（ｂ）は多重点火栓の点火時
点を示す図で、横軸に時間を縦軸に電圧を取っている。For this reason, conventionally, as explained in detail in Fig. 2, a multiple spark ignition device is used as the ignition plug 0Q in order to set the ignition point earlier than the alcohol injection point and to lengthen the duration of the ignition spark. Ta. Fig. 2 is an explanatory diagram of a conventional multiple spark ignition device, and Figs. 1 and 2 (a) are diagrams showing the timing of alcohol injection and the injection amount, with time on the horizontal axis and the injection amount on the vertical axis. FIG. 2(b) is a diagram showing the ignition timing of a multi-point spark plug, with the horizontal axis representing time and the vertical axis representing voltage.
即ち、第２図（ａ） ｌこ示す噴射時点Ｔはエンジン回
転数によって変化し、噴射期間Ａはエンジン負荷によっ
て変わる。従って、点火栓ａＯとして多重火花点火栓を
用い、第２図（ｂ）に示す時点ｔ１〜【５において点火
栓α０を点火させ、火花継続期間Ｂを噴射期間Ａよりか
なり大きくしていた。従来の装置は上記のように構成さ
れており、多重火花点火装置を用いる必要があり、装置
が大型且つ複雑となり、亮価となる欠点があっｔこ。That is, the injection time point T shown in FIG. 2(a) changes depending on the engine speed, and the injection period A changes depending on the engine load. Therefore, a multi-spark ignition plug was used as the ignition plug aO, and the ignition plug α0 was ignited at time points t1 to [5] shown in FIG. 2(b), and the spark duration period B was made considerably longer than the injection period A. The conventional device is constructed as described above, and has the drawback of requiring the use of multiple spark ignition devices, making the device large and complicated, and resulting in high cost.
この発明は上記従来のものの欠点を除去するためになさ
れたものである。以下図面によってこの発明を説明する
。This invention has been made in order to eliminate the drawbacks of the above-mentioned conventional ones. The present invention will be explained below with reference to the drawings.
第８図はこの発明に係る内燃機関点火装置Ｃζ使用され
る噴射弁（６）部分の一実施例を示す部分側断面図であ
る。図中第１図と同一部分には同一符号を付している。FIG. 8 is a partial side sectional view showing an embodiment of the injection valve (6) used in the internal combustion engine ignition system Cζ according to the present invention. In the figure, the same parts as in FIG. 1 are given the same reference numerals.
第８図において、圧力室α■は燃料導管（８）に接続さ
れたものである。圧電素子等の受圧部＠は保持板（至）
で圧力室α復円に保持され、燃料導管（８）内のアルコ
ールの圧力を受圧するものである。容器α→は圧力室（
ロ）に接続され、受圧部（６）の受圧に応じて出力を生
じる圧力検知回路（至）を設置するものである。In FIG. 8, the pressure chamber α■ is connected to a fuel conduit (8). Pressure receiving part of piezoelectric element @ is holding plate (to)
The pressure chamber α is held in a convex circle and receives the pressure of alcohol in the fuel conduit (8). Container α→ is the pressure chamber (
A pressure detection circuit (to) is installed which is connected to (b) and generates an output depending on the pressure received by the pressure receiving part (6).
次にこの動作を第４図を用いて説明する。今、第１図に
示す噴射ポンプ（７）によってアルコールが噴射弁（６
）に第４図（ａ）の時点Ｔにおいて供給されると、この
アルコール圧力が受圧部＠に加わり、圧力検知回路（ハ
）は出力を生じ５時点Ｔとほぼ同時点である第４図（ｂ
） ｌこ示す時点Ｔ′において点火栓ＯＱを点火させる
ことができ、且つその点火継続期間も短くてよく、その
点火回路は簡単な構造となる。Next, this operation will be explained using FIG. 4. Now, alcohol is injected into the injection valve (6) by the injection pump (7) shown in Figure 1.
) is supplied at time T in FIG. 4(a), this alcohol pressure is applied to the pressure receiving part @, and the pressure detection circuit (c) produces an output as shown in FIG. b
) The ignition plug OQ can be ignited at the time T' shown above, and the ignition duration may be short, and the ignition circuit has a simple structure.
躬５図はこの発明に係る内燃機関点火装置に使用される
噴射弁（６）の他の実施例を示す部分側断面図である。Figure 5 is a partial side sectional view showing another embodiment of the injection valve (6) used in the internal combustion engine ignition system according to the present invention.
第６図において、オリフィスα・は燃料導管（８）に設
けられ、アルコールを通す管径を狭くしたものである。In FIG. 6, the orifice α is provided in the fuel conduit (8) and has a narrowed diameter pipe through which alcohol passes.
第１．第２の圧力室ａり、［ハ］はオリフィスα・の前
後の燃料導管（８）に接続されており。1st. The second pressure chamber (a) is connected to the fuel conduit (8) before and after the orifice (a).
受圧部Ｑ■によって区切られている。It is separated by a pressure receiving part Q■.
次１ここの動作を説明する。第１図に示す噴射ポンプ（
７）が動作しないときは第１．第２の圧力室ａＶ 。Next 1. The operation here will be explained. The injection pump shown in Figure 1 (
If 7) does not work, try 1. Second pressure chamber aV.
（至）内の圧力は等しく、受圧部（ロ）は受圧しない。The pressure in (to) is equal, and the pressure receiving part (b) does not receive pressure.
次に、噴射ポンプ（７）が動作するとオリフィスαΦが
あるため、第１の圧力室αηの圧力が第２の圧力室（至
）の圧力より高くなり、受圧部（６）が受圧してその圧
力にもとづいて図外の圧力検知回路を動作させて、第１
図に示す点火栓００を点火する。Next, when the injection pump (7) operates, the pressure in the first pressure chamber αη becomes higher than the pressure in the second pressure chamber (to) because of the orifice αΦ, and the pressure receiving part (6) receives the pressure. A pressure detection circuit (not shown) is operated based on the pressure, and the first
The spark plug 00 shown in the figure is lit.
第６図はこの発明に係る内燃機関点火装置に使用される
噴射弁の更に他の実施例を示す部分側断面図である。第
６図において、弁体ａ燵は右端の燃料導管（８）から導
入される燃料圧力が所定値をこえると復帰ばね（１９４
）の力ｆこ抗して噴射弁（６）内を右方に急１こ移動し
て燃料を左端の噴射口から噴き出させるものである。そ
のピストン１９１こは燃料導管（８）から供給されるア
ルコールを噴射口（６０８）ニ導＜ 溝（１９１）が設
けられている。磁石に）は弁体α呻の燃料導管（８）側
の端部に取付けられたものである。FIG. 6 is a partial side sectional view showing still another embodiment of the injection valve used in the internal combustion engine ignition system according to the present invention. In FIG. 6, the valve body a is activated by a return spring (194) when the fuel pressure introduced from the fuel conduit (8) at the right end exceeds a predetermined value.
), the injection valve (6) suddenly moves one step to the right against the force f of the injection valve (6), and fuel is injected from the injection port at the left end. The piston 191 is provided with a groove (191) that guides alcohol supplied from the fuel conduit (8) to the injection port (608). The magnet) is attached to the end of the valve body α on the fuel conduit (8) side.
コイルａ］）は噴射弁（６）の内周面に磁石（イ）を取
巻くように設けられ、磁石（ホ）の移動時にパルス出力
を生じるものである。The coil a) is provided on the inner peripheral surface of the injection valve (6) so as to surround the magnet (a), and generates a pulse output when the magnet (e) moves.
次にこの動作を説明する。第１図に示す噴射ポンプ（７
）が動作しないと、第１．第２の室（６０１）。Next, this operation will be explained. Injection pump (7) shown in Figure 1
) does not work, the first. Second chamber (601).
（６０２）内の圧力は等しく、弁体αｅは摺動移動しな
い。次に、噴射ポンプ（７）が戯作すると、溝（１９１
）が傾斜して設けられているため、第１．第２の室（６
０１）、（６０２）に圧力差が生じる。このため弁体（
ｋｌは図中の左方向に摺動移動し、これに連動して磁石
（１）も移動する。従って、コイルシυはパルス出力を
発生し、第１図に示す点火栓αＱを点火する。The pressure inside (602) is equal, and the valve body αe does not slide. Next, when the injection pump (7) operates, the groove (191
) are provided at an angle, so the first. Second chamber (6
A pressure difference occurs between 01) and (602). For this reason, the valve body (
kl slides to the left in the figure, and the magnet (1) also moves in conjunction with this. Therefore, the coil shaft υ generates a pulse output and ignites the spark plug αQ shown in FIG.
この発明は以上のように構成され、噴射弁（６）からの
燃料噴射時１こ加わる燃料圧力または燃料流量の動圧も
しくは噴射弁（６）内の弁体（６）の移動を暖気的に検
出して、点火栓αＱを点火するようにしているため、エ
ンジンの回転数等のエンジンの状態による燃料の噴射時
点が変化しても、簡単な装置で安価に燃料の噴射時点で
点火栓ＯＱを点火することができる・
なお、上記実施例はシリンダ（１）内へ直接燃料を噴射
する場合について説明したが、シリンダ（１）とは別個
に副室を設け、副室内へ燃料を噴射する副室式内燃機関
にも適用できることは勿論である。The present invention is configured as described above, and the fuel pressure applied during fuel injection from the injection valve (6) or the dynamic pressure of the fuel flow rate or the movement of the valve body (6) in the injection valve (6) is controlled by warm air. Since the ignition plug αQ is detected and ignited, even if the timing of fuel injection changes due to engine conditions such as engine speed, the ignition plug OQ can be adjusted at low cost using a simple device. Although the above embodiment describes the case where fuel is injected directly into the cylinder (1), it is also possible to provide a subchamber separate from the cylinder (1) and inject fuel into the subchamber. Of course, the present invention can also be applied to a subchamber type internal combustion engine.
以上のようにこの発明によれば、簡単な装置で安価に燃
料の噴射時点で点火栓を点火させることができる効果を
有する。As described above, the present invention has the effect that the ignition plug can be ignited at the time of fuel injection using a simple device at low cost.
第１図は一般的な内燃機関点火装置を示す側断面図であ
る。第２図（ａ） 、 （ｂ）は従来の内燃機関点火装
置の動作説明図である。第８図はこの発明に係る内燃機
関点火装置に使用される噴射弁の一実施例を示す部分側
断面図である。第４図（ａ） 、 （ｂ）は第８図の動
作説明図である。第５図及び第６図は夫々この発明に係
る内燃機関点火装置ｆ ｌこ使用される噴射弁の他の実
施例を示す部分側断面図である。
図において、各図中同一部分は同一符号を付し第２の冨
、（６０８）・・・噴射口、（７）・・・噴射ポンプ、
（８）・・・燃料導管、（９）・・・ピストン、（ＩＱ
・・・点火栓、０◇・・・圧力室、（Ｉ４・・・受圧部
、α・・・・オリフィス、αカ、・（至）・・・第１゜
第２の圧力室、Ｏｎ・・・弁体、（１９１）・・・溝、
（１）・・・磁石、（２０・・・コイルである。
代理人 弁理士 葛野信−
第２図
第４図FIG. 1 is a side sectional view showing a general internal combustion engine ignition device. FIGS. 2(a) and 2(b) are explanatory diagrams of the operation of a conventional internal combustion engine ignition system. FIG. 8 is a partial side sectional view showing an embodiment of an injection valve used in an internal combustion engine ignition system according to the present invention. FIGS. 4(a) and 4(b) are explanatory diagrams of the operation of FIG. 8. 5 and 6 are partial side sectional views showing other embodiments of the injection valve used in the internal combustion engine ignition system according to the present invention. In the figures, the same parts in each figure are denoted by the same reference numerals, such as second wealth, (608)...injection port, (7)...injection pump,
(8)... Fuel conduit, (9)... Piston, (IQ
... Spark plug, 0◇ ... Pressure chamber, (I4 ... Pressure receiving part, α ... Orifice, α force, ... (to) ... 1st degree, 2nd pressure chamber, On. ... Valve body, (191) ... Groove,
(1)... Magnet, (20... Coil. Agent Patent Attorney Makoto Kazuno - Figure 2 Figure 4
Claims (4)
らのｉｆｆ記燃料の噴射の為 １の弁
体の移動、燃料圧力の変化、燃料動圧の変化等の変化を
検出し眠気出力を生じる噴射検出装置及び前記噴射検出
装置の電気出力によって前記燃焼室内に放電をさせる点
火栓を備えたことを特徴とする内燃機関点火装置。(1) An injection valve that injects fuel into the combustion chamber, for injecting fuel from the injection valve, detects changes such as movement of the valve element 1, changes in fuel pressure, changes in fuel dynamic pressure, etc., and outputs drowsiness. An ignition system for an internal combustion engine, comprising: an injection detection device that generates an electric current; and an ignition plug that causes an electric discharge in the combustion chamber by the electrical output of the injection detection device.
管に接続された圧力室と、前記圧力室内に設置され受圧
時に出力を生じる受圧部とによって構成された特許請求
の範囲第（１）項記載の内燃機関点火装置。(2) The injection detection device is constituted by a pressure chamber connected to a fuel conduit that supplies fuel to the injection valve, and a pressure receiving section installed in the pressure chamber and generating an output when pressure is received. ) The internal combustion engine ignition system described in item 2.
管に設けられたオリフィスと、前記オリフィスの前後の
燃料導管に接続され受圧部によって区分された第１．第
２の圧力室とから構成された特許請求の範囲第（１）項
記載の内燃機関点火装置。(3) The injection detection device includes an orifice provided in a dedicated fuel pipe that supplies fuel to the injection valve, and a first orifice connected to a fuel conduit before and after the orifice and separated by a pressure receiving part. An internal combustion engine ignition system according to claim (1), comprising a second pressure chamber.
分し且つ前記噴射弁内をピストン状に摺動移動し、前記
第１．第２の室を連通ずる噴射口側が小径の溝を有する
弁体と、前記弁体に取付けられた磁石と、前記磁石を取
囲むように前記噴射弁の円周に設けられたコイルとによ
って構成された特許請求の範囲第（１）項記載の内燃機
関点火装置。(4) The injection detection device detects the inside of the injection valve from the first. divided into a second chamber and slidably moves inside the injection valve in a piston-like manner; Consisting of a valve body having a small-diameter groove on the injection port side that communicates with the second chamber, a magnet attached to the valve body, and a coil provided around the circumference of the injection valve so as to surround the magnet. An internal combustion engine ignition device according to claim (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15024781A JPS5851275A (en) | 1981-09-21 | 1981-09-21 | Igniting apparatus for internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15024781A JPS5851275A (en) | 1981-09-21 | 1981-09-21 | Igniting apparatus for internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5851275A true JPS5851275A (en) | 1983-03-25 |
Family
ID=15492769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15024781A Pending JPS5851275A (en) | 1981-09-21 | 1981-09-21 | Igniting apparatus for internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5851275A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62298660A (en) * | 1986-06-18 | 1987-12-25 | Mitsubishi Motors Corp | Ignition control device of methanol diesel engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54126834A (en) * | 1978-03-25 | 1979-10-02 | Kloeckner Humboldt Deutz Ag | Ignition timing controller for internal combustion engine |
-
1981
- 1981-09-21 JP JP15024781A patent/JPS5851275A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54126834A (en) * | 1978-03-25 | 1979-10-02 | Kloeckner Humboldt Deutz Ag | Ignition timing controller for internal combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62298660A (en) * | 1986-06-18 | 1987-12-25 | Mitsubishi Motors Corp | Ignition control device of methanol diesel engine |
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