JPH079169B2 - Internal combustion engine controller - Google Patents
Internal combustion engine controllerInfo
- Publication number
- JPH079169B2 JPH079169B2 JP61132132A JP13213286A JPH079169B2 JP H079169 B2 JPH079169 B2 JP H079169B2 JP 61132132 A JP61132132 A JP 61132132A JP 13213286 A JP13213286 A JP 13213286A JP H079169 B2 JPH079169 B2 JP H079169B2
- Authority
- JP
- Japan
- Prior art keywords
- engine
- output
- internal combustion
- coil
- 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.)
- Expired - Lifetime
Links
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は外部信号により機関の過回転を防止するよう
にした内燃機関制御装置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal combustion engine control device which prevents an engine from overspeeding by an external signal.
第２図は従来装置を示し、１は磁石発電機の発電コイ
ル、2,3は発電コイル１の出力を整流するダイオード、
４はコンデンサ、５は点火コイル、６は点火プラグ、７
はサイリスタ、8,9は整流用ダイオード、10はコンデン
サ、11はツエナーダイオード、12は定電圧源、13は機関
のオイルレベルを検出するオイルレベルスイツチ、14は
磁石発電機の信号コイルで機関の点火時期に点火信号を
発生する。15はオイルレベルスイツチ13および信号コイ
ル14の出力を入力される回転数検出回路、16はサイリス
タである。FIG. 2 shows a conventional device, 1 is a generator coil of a magnet generator, 2 and 3 are diodes for rectifying the output of the generator coil 1,
4 is a capacitor, 5 is an ignition coil, 6 is a spark plug, 7
Is a thyristor, 8 and 9 are rectifying diodes, 10 is a capacitor, 11 is a zener diode, 12 is a constant voltage source, 13 is an oil level switch that detects the oil level of the engine, and 14 is a signal coil of a magnet generator. An ignition signal is generated at the ignition timing. Reference numeral 15 is a rotation speed detection circuit to which the outputs of the oil level switch 13 and the signal coil 14 are input, and 16 is a thyristor.
次に、上記した従来装置の動作について説明する。発電
コイル１の出力はダイオード３により整流され、コンデ
ンサ４に充電される。一方、サイリスタ７のゲートに点
火信号が入力されるとサイリスタ７が導通し、コンデン
サ４の電荷は点火コイル５の１次側を介して放電し、点
火コイル５の２次側に高電圧を発生する。これにより、
点火プラグ６が放電して機関を点火する。又、発電コイ
ル１の出力はダイオード９により整流され、コンデンサ
10により平滑され、ツエナーダイオード11により定電圧
化され、定電圧源12が形成される。Next, the operation of the above conventional device will be described. The output of the magneto coil 1 is rectified by the diode 3 and charged in the capacitor 4. On the other hand, when an ignition signal is input to the gate of the thyristor 7, the thyristor 7 becomes conductive, the charge of the capacitor 4 is discharged through the primary side of the ignition coil 5, and a high voltage is generated on the secondary side of the ignition coil 5. To do. This allows
The spark plug 6 discharges and ignites the engine. The output of the generator coil 1 is rectified by the diode 9 and
The voltage is smoothed by 10, and is made a constant voltage by a Zener diode 11, and a constant voltage source 12 is formed.
オイルレベルスイツチ13は通常は開状態にあり、回転数
検出回路15は出力を出さない。このため、サイリスタ16
はオフ状態にあり、機関の点火は通常に行われる。しか
し、機関のオイルレベルが減少したときはオイルレベル
スイツチ13が閉じ、この際には機関回転数に比例した信
号を発生する信号コイル14の出力を受ける回転数検出回
路15は機関の回転数が所定値以上になると出力を出し、
サイリスタ16をオンさせる。このため、発電コイル１の
出力はサイリスタ16により短絡され、点火が行われず、
過回転は防止され、オーバラン等により機関が摩耗した
り破損したりするのを防止する。The oil level switch 13 is normally in the open state, and the rotation speed detection circuit 15 does not output. For this reason, the thyristor 16
Is off and the engine is ignited normally. However, when the oil level of the engine decreases, the oil level switch 13 closes, and at this time, the rotation speed detection circuit 15 that receives the output of the signal coil 14 that generates a signal proportional to the engine speed changes the engine speed. Outputs when the value exceeds a certain value,
Turn on thyristor 16. Therefore, the output of the magneto coil 1 is short-circuited by the thyristor 16 and ignition is not performed,
Excessive rotation is prevented and the engine is prevented from being worn or damaged due to overrun or the like.
しかるに、上記した従来装置においては、オイルレベル
スイツチ13が機関のオイル流通経路に設けてあつたり、
あるいはオイル圧力を検出するものであつたりした場合
には、機関の停止時にはオイルが減少していないにもか
かわらず減少していると判定する。このため、始動直後
に回転数が上昇すると回転数検出回路15が出力を出し、
サイリスタ16がオンして過回転抑制制御が行われ、機関
が正常であるにもかかわらず正規の運転ができないとい
う問題点があつた。However, in the above-mentioned conventional device, the oil level switch 13 is installed in the oil flow path of the engine,
Alternatively, when the oil pressure is detected, it is determined that the oil has decreased when the engine is stopped, although the oil has not decreased. Therefore, when the rotation speed increases immediately after the start, the rotation speed detection circuit 15 outputs an output,
There was a problem that the thyristor 16 was turned on and the over-rotation suppression control was performed, so that the engine could not operate normally even though the engine was normal.
この発明は上記のような問題点を解決するために成され
たものであり、始動後機関が暖機されるまでは過回転防
止制御を行わないようにして始動直後の運転を正常に行
うことができる内燃機関制御装置を得ることを目的とす
る。The present invention has been made in order to solve the above problems, and normally performs the operation immediately after starting without performing over-rotation preventing control until the engine is warmed up after starting. An object of the present invention is to obtain an internal combustion engine control device capable of achieving the above.
この発明に係る内燃機関制御装置は、機関始動後機関温
度が所定値に上昇するまでは発電コイルの出力を短絡す
るスイツチング手段の導通を阻止する導通阻止手段を設
けたものである。The internal combustion engine control device according to the present invention is provided with the conduction preventing means for preventing conduction of the switching means for short-circuiting the output of the power generation coil until the engine temperature rises to a predetermined value after the engine is started.
この発明においては、導通阻止手段により機関始動後機
関の暖機が完了するまでスイツチング手段の導通を阻止
しており、この間に機関回転数が所定値以上になりかつ
オイルレベルスイツチが動作し、回転数検出手段が出力
を出してもスイツチング手段は導通せず、過回転防止制
御は行われない。In the present invention, the conduction preventing means prevents conduction of the switching means after the engine has been started until the engine has been warmed up, during which the engine speed becomes equal to or higher than a predetermined value and the oil level switch operates to rotate the engine. Even if the number detecting means outputs an output, the switching means does not conduct, and the over-rotation preventing control is not performed.
以下、この発明の実施例を図面とともに説明する。第１
図において、17はトランジスタ、18はコンパレータ、19
〜22は抵抗、23は機関に取付けられ機関温度を検出する
サーミスタである。他の構成は従来と同様である。Embodiments of the present invention will be described below with reference to the drawings. First
In the figure, 17 is a transistor, 18 is a comparator, and 19
22 is a resistor, and 23 is a thermistor attached to the engine to detect the engine temperature. Other configurations are the same as the conventional one.
上記構成において、発電コイル１の出力に基づいて点火
プラグ５が点火され、またオイルレベルスイツチ13が動
作しかつ機関回転数が所定値以上になると回転数検出回
路15が出力を出し、サイリスタ16がオンして発電コイル
１の出力が短絡され、過回転抑制制御が行われる。一
方、コンパレータ18の（−）端子には定電圧源12の電圧
を抵抗21,22により分圧した電圧が印加され、（＋）端
子には抵抗20とサーミスタ23により分圧された電圧が印
加される。従つて、機関の始動後所定時間は（＋）端子
の電圧が（−）端子の電圧を上回り、コンパレータ18の
出力はハイレベルでトランジスタ17はオンする。このた
め、サイリスタ16のゲート電圧は零となり、回転数検出
回路15が出力を出してもサイリスタ16がオンすることは
なく、機関の点火は通常のように行われる。始動後所定
時間経過するとサーミスタ23の抵抗値が減少して（＋）
端子の印加電圧が減少するので、コンパレータ18の出力
はローレベルとなり、トランジスタ17はオフする。この
ため、回転数検出回路15の出力によりサイリスタ16はオ
ンし、過回転抑制制御が行われる。In the above structure, when the spark plug 5 is ignited based on the output of the magneto coil 1, the oil level switch 13 operates and the engine speed becomes equal to or higher than a predetermined value, the speed detection circuit 15 outputs an output, and the thyristor 16 operates. When turned on, the output of the magneto coil 1 is short-circuited, and over-rotation suppression control is performed. On the other hand, a voltage obtained by dividing the voltage of the constant voltage source 12 by the resistors 21 and 22 is applied to the (−) terminal of the comparator 18, and a voltage divided by the resistor 20 and the thermistor 23 is applied to the (+) terminal. To be done. Therefore, the voltage of the (+) terminal exceeds the voltage of the (-) terminal for a predetermined time after the engine is started, the output of the comparator 18 is at a high level, and the transistor 17 is turned on. Therefore, the gate voltage of the thyristor 16 becomes zero, the thyristor 16 does not turn on even if the rotation speed detection circuit 15 outputs, and the engine is ignited as usual. The resistance value of the thermistor 23 decreases (+) after a lapse of a predetermined time after starting.
Since the voltage applied to the terminal decreases, the output of the comparator 18 becomes low level and the transistor 17 turns off. Therefore, the thyristor 16 is turned on by the output of the rotation speed detection circuit 15, and the overspeed suppression control is performed.
以上のようにこの発明によれば、発電コイルの出力を短
絡するスイツチング手段を、機関始動後機関温度が所定
値に上昇するまで導通しないようにしており、この期間
はオイルレベルスイツチが誤動作しても機関の点火が正
常に行われ、始動直後の運転を正常に行うことができ
る。As described above, according to the present invention, the switching means for short-circuiting the output of the generator coil is not conducted until the engine temperature rises to a predetermined value after the engine is started, and during this period, the oil level switch malfunctions. Also, the ignition of the engine is normally performed, and the operation immediately after the start can be normally performed.
第１図はこの発明装置の回路図、第２図は従来装置の回
路図である。 １……発電コイル、４……コンデンサ、５……点火コイ
ル、7,16……サイリスタ、13……オイルレベルスイツ
チ、15……回転数検出回路、17……トランジスタ、18…
…コンパレータ、23……サーミスタ。 尚、図中同一符号は同一または相当部分を示す。FIG. 1 is a circuit diagram of the device of the present invention, and FIG. 2 is a circuit diagram of a conventional device. 1 ... Generator coil, 4 ... Capacitor, 5 ... Ignition coil, 7,16 ... Thyristor, 13 ... Oil level switch, 15 ... Rotation speed detection circuit, 17 ... Transistor, 18 ...
… Comparator, 23 …… Thermistor. The same reference numerals in the drawings indicate the same or corresponding parts.
Claims (1)
する点火回路、発電コイルの出力を短絡するスイッチン
グ手段、機関のオイルレベルを検出しオイルレベルが所
定値に達していない場合に動作するオイルレベルスイッ
チ、機関回転数が所定値以上でかつオイルレベルスイッ
チの動作時に出力を出しスイッチング手段を導通させる
回転数検出手段を備えた内燃機関制御装置において、機
関の温度を検出する機関温度検出手段、機関始動後機関
温度が所定値に上昇するまでスイッチング手段の導通を
阻止する導通阻止手段を備えたことを特徴とする内燃機
関制御装置。Claim: What is claimed is: 1. An ignition circuit for controlling energization from a power-generating coil to an ignition coil, a switching means for short-circuiting the output of the power-generating coil, an oil that operates when the oil level of an engine is detected and does not reach a predetermined value. In an internal combustion engine control device having a level switch, an engine speed detecting means for outputting an output when the engine speed is equal to or higher than a predetermined value and for operating the oil level switch, and conducting the switching means, an engine temperature detecting means for detecting the temperature of the engine, An internal combustion engine control device comprising a conduction preventing means for preventing conduction of the switching means until the engine temperature rises to a predetermined value after the engine is started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61132132A JPH079169B2 (en) | 1986-06-05 | 1986-06-05 | Internal combustion engine controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61132132A JPH079169B2 (en) | 1986-06-05 | 1986-06-05 | Internal combustion engine controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62288372A JPS62288372A (en) | 1987-12-15 |
| JPH079169B2 true JPH079169B2 (en) | 1995-02-01 |
Family
ID=15074130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61132132A Expired - Lifetime JPH079169B2 (en) | 1986-06-05 | 1986-06-05 | Internal combustion engine controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079169B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2639814B2 (en) * | 1987-12-17 | 1997-08-13 | 三信工業株式会社 | Ignition timing control system for internal combustion engine for ship propulsion |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62147052A (en) * | 1985-12-20 | 1987-07-01 | Kokusan Denki Co Ltd | Protection device for internal combustion engine |
| JPH0355821Y2 (en) * | 1986-05-28 | 1991-12-12 |
-
1986
- 1986-06-05 JP JP61132132A patent/JPH079169B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62288372A (en) | 1987-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4633834A (en) | Spark timing control device for internal combustion engine | |
| JPH0788810B2 (en) | Internal combustion engine ignition device | |
| JPH079169B2 (en) | Internal combustion engine controller | |
| JPH0350294Y2 (en) | ||
| JPH0720381Y2 (en) | Internal combustion engine stop device | |
| JPH0355821Y2 (en) | ||
| JP2806102B2 (en) | Ignition device for internal combustion engine | |
| JP3371386B2 (en) | Contactless ignition device for internal combustion engine | |
| JPS6156422B2 (en) | ||
| JPS6146216Y2 (en) | ||
| JPH0437277B2 (en) | ||
| JPS63198780A (en) | Electronic type engine starter | |
| JPH0119071B2 (en) | ||
| JPS5836856Y2 (en) | Internal combustion engine ignition system | |
| JPS6228706Y2 (en) | ||
| JP3480588B2 (en) | Capacity discharge type ignition device | |
| JPH0441253Y2 (en) | ||
| JPS6141987Y2 (en) | ||
| KR950000227B1 (en) | Ignition timming controller for internal combustion engine | |
| JPH06624Y2 (en) | Ignition device for internal combustion engine | |
| JPH0355820Y2 (en) | ||
| JP3178361B2 (en) | Capacitor discharge type ignition device for internal combustion engine | |
| JP3609668B2 (en) | Capacitor charge / discharge ignition system | |
| JP2764188B2 (en) | Speed limiter for vehicles | |
| JPH0114423B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |