JPS59173564A - Automatic stopper for engine - Google Patents
Automatic stopper for engineInfo
- Publication number
- JPS59173564A JPS59173564A JP4775283A JP4775283A JPS59173564A JP S59173564 A JPS59173564 A JP S59173564A JP 4775283 A JP4775283 A JP 4775283A JP 4775283 A JP4775283 A JP 4775283A JP S59173564 A JPS59173564 A JP S59173564A
- Authority
- JP
- Japan
- Prior art keywords
- detection switch
- engine
- voltage
- transistor
- ignition
- 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
- F02P11/00—Safety means for electric spark ignition, not otherwise provided for
- F02P11/02—Preventing damage to engines or engine-driven gearing
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)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はエンジンオイル不足によるエンジン自動停止装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic engine stop device due to lack of engine oil.
従来のものはオイルが規定レヘル以下に低下したとき検
知スイッチで直接発電コイルを短絡していたため、正常
運Φｊ、動作時に検知スイッチに高電圧が印加さ？する
とともに、検知スイッチ作動時に検知スイッチに通入電
流が流れるという問題かあり、検知スイッチを大型のも
のにしなければならなかった。In the conventional system, the detection switch directly shorted the generator coil when the oil level dropped below the specified level, so high voltage was applied to the detection switch during normal operation. At the same time, there was a problem in that current flowed through the detection switch when it was activated, and the detection switch had to be made larger.
そこで本発明は、検知スイ・７チ・＼の印加電圧を抑え
、かつ検知スイッチ作動時に検知スイッチに流れる電流
を小さくし、検知スイッチを小型にすることを目的とす
る。Therefore, an object of the present invention is to reduce the voltage applied to the detection switch 7, reduce the current flowing through the detection switch when the detection switch is activated, and make the detection switch smaller.
以下本発明を図に示す実施例について説明する。The present invention will be described below with reference to embodiments shown in the drawings.
第１図に示す第１実施例において、■は磁石発電機に設
けられた点火コイルで、発電コイルを兼用するものであ
って、１次コイル１ａと２次コイル１ｂとを有する。２
は点火プラグである。３はトランジスタ、４はサイリス
ク、５〜７は抵抗で、 −これらにより点火回路
１００を構成する。８は第２の半導体スイッチング素子
をなすトランジスタ、９．１０は抵抗、１１は第１の半
導体スイッチング素子をなすトランジスタ、１２．１３
は分圧用の抵抗で、これらにより停止回路２００を構成
する。１４は発光ダイオード、１５は制限用の抵抗、１
６はダイオードで、これらにより警報回路３００を構成
する。１７はエンジンオイル量が規定値以下まで減少す
ると閉じる検出スイッチで、例えばオイル液面の移動に
応動して移動するフローＩ・に固定した永久磁石によっ
て開閉するリードスイッチが用いである。１８は自己復
帰式の常開スイッチよりなるエンジン停止スイッチであ
る。In the first embodiment shown in FIG. 1, ``■'' is an ignition coil provided in a magnet generator, which also serves as a power generation coil, and has a primary coil 1a and a secondary coil 1b. 2
is a spark plug. 3 is a transistor, 4 is a silice, and 5 to 7 are resistors, - These constitute an ignition circuit 100. 8 is a transistor forming the second semiconductor switching element, 9.10 is a resistor, 11 is a transistor forming the first semiconductor switching element, 12.13
are resistors for voltage division, and these constitute the stop circuit 200. 14 is a light emitting diode, 15 is a limiting resistor, 1
6 is a diode, which constitutes an alarm circuit 300. Reference numeral 17 denotes a detection switch that closes when the amount of engine oil decreases below a specified value, and is, for example, a reed switch that is opened and closed by a permanent magnet fixed to the flow I, which moves in response to movement of the oil level. 18 is an engine stop switch consisting of a self-resetting normally open switch.
次に、上記構成においてその作動を説明する。Next, the operation of the above configuration will be explained.
エンジンオイルが充分ありオイルレベル検知スイッチ１
７がＯＦＦしている時には点火回路１００の動作により
１次コイル１ａに高電圧が発生し、従って２次コイル１
ｂに２次電圧が発生し点火栓２を着火させエンジンを稼
動させる。この時に検知スイッチ１７にかかる電圧は、
１次コイル１ａに発生ずる電圧×抵抗１３／（抵抗１２
＋抵抗１３）となり規定値以下に抑えることができる。There is enough engine oil. Oil level detection switch 1
7 is OFF, a high voltage is generated in the primary coil 1a due to the operation of the ignition circuit 100, so that the secondary coil 1a is turned off.
A secondary voltage is generated at b, igniting the spark plug 2 and starting the engine. The voltage applied to the detection switch 17 at this time is
Voltage generated in the primary coil 1a x resistance 13/(resistance 12
+resistance 13), and can be suppressed to below the specified value.
次に、エンジンオイルが規定量以下となり検知スイッチ
１７がＯＮすると、トランジスタ１１かＯＮしてトラン
ジスタ８がＯＮとなり、点火回路１００のサイリスク４
のゲート、カソード間を実質的に短絡してしまう。その
結果、ｌ・ランシスタ３はＯＮ、ＯＦ Ｆ動作をしなく
なり、点火動作が確実に停止する。この時検知スイッチ
１７に流れる電流はトランジスタ１１を通りトランジス
タ８をＯＮさせる程度の微小電流でよい。Next, when the engine oil becomes less than the specified amount and the detection switch 17 is turned on, the transistor 11 is turned on and the transistor 8 is turned on, and the ignition circuit 100 is turned on.
This effectively shorts the gate and cathode of the device. As a result, the l-run system 3 no longer performs ON and OFF operations, and the ignition operation is reliably stopped. At this time, the current flowing through the detection switch 17 may be as small as passing through the transistor 11 and turning on the transistor 8.
尚、回路３００は発光ダイオード等による警報装置であ
り、省略することも可能である。Note that the circuit 300 is an alarm device using a light emitting diode or the like, and can be omitted.
第２図は本発明の第２実施例を示すものであり、１次コ
イル１ａをサイリスク８ａで短絡させて点火動作を停止
させるものである。FIG. 2 shows a second embodiment of the present invention, in which the primary coil 1a is short-circuited by a cylisk 8a to stop the ignition operation.
なお、上述した各実施例においては、点火コイルを発電
コイルとして兼用させたが、点火コイル１とは別に発電
コイルを設けて点火回路の電源としてもよく、また、発
電コイルを電源とする点火回路を有するものであれば、
どのような方式の点火回路でも本発明を適用することが
できる。In each of the embodiments described above, the ignition coil is also used as a power generation coil, but a power generation coil may be provided separately from the ignition coil 1 to serve as a power source for the ignition circuit. If it has
The present invention can be applied to any type of ignition circuit.
また、トランジスタ１１の代わりにサイリスク等の他の
半導体スイッチング素子を使用することもできる。Moreover, other semiconductor switching elements such as SIRIS can also be used in place of the transistor 11.
以上述べたように本発明においては、以下のごとき優れ
た効果がある。As described above, the present invention has the following excellent effects.
（１１検知スイッチＯＦＦ時に検知スイッチにかかる電
圧を抑え、かつ検知スイソ、−チＯＮ時に検知スイッチ
に流れる電流を小さくすることができて、小型で安価な
検知スイッチの使用が可能となる。(11) It is possible to suppress the voltage applied to the detection switch when the detection switch is OFF, and to reduce the current flowing through the detection switch when the detection switch is turned ON or OFF, making it possible to use a small and inexpensive detection switch.
（２）液量が規定量以下に減少した時、運転中のエンジ
ンを自動的に停止させるとともにエンジンが始動しない
ようにすることができる。(2) When the liquid level decreases below a specified level, the running engine can be automatically stopped and the engine can be prevented from starting.
第１図およきび第２図は本発明装置の第１および第２実
施例を示す電気回路図である。
■・・・発電コイルを兼ねる点火コイル、８．８ａ・・
・第２の半導体スイッチング素子をなすトランジスタと
サイリスタ、１１・・・第１の半導体スイッチング素子
をなすトランジスタ、１２．１３・・・分圧用の抵抗、
１７・・・検出スイッチ、１００・・・点火回路。
代理人弁理士 岡 部 隆1 and 2 are electrical circuit diagrams showing first and second embodiments of the apparatus of the present invention. ■...Ignition coil that also serves as a power generation coil, 8.8a...
・Transistor and thyristor forming the second semiconductor switching element, 11... Transistor forming the first semiconductor switching element, 12.13... Resistor for voltage division,
17...Detection switch, 100...Ignition circuit. Representative Patent Attorney Takashi Okabe
Claims (1)
出力を電源として動作する点火回路と、前記発電コイル
の端子間に接続した分圧用の抵抗と、この抵抗の分圧点
に制御極を接続した第１の半導体スイッチング素子と、
このスイッチング素子と直列に接続され、検出液量が不
足したときに閉じる検出スイッチと、この検出スイッチ
と前記第１の半導体スイッチング素子とを介しζ制御信
号が印加されることにより導通して前記点火回路の作動
を実質的に無効にするための第２の半導体スイッチング
素子とを備えるエンジン自動停止装置。A generator coil of a magnet generator, an ignition circuit that operates using the generated output of the generator coil as a power source, a voltage dividing resistor connected between the terminals of the generator coil, and a control pole connected to the voltage dividing point of this resistor. a first semiconductor switching element,
A detection switch is connected in series with this switching element and closes when the amount of detected liquid is insufficient, and a ζ control signal is applied through this detection switch and the first semiconductor switching element to conduct the ignition. and a second semiconductor switching element for substantially disabling operation of the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4775283A JPS59173564A (en) | 1983-03-22 | 1983-03-22 | Automatic stopper for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4775283A JPS59173564A (en) | 1983-03-22 | 1983-03-22 | Automatic stopper for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59173564A true JPS59173564A (en) | 1984-10-01 |
Family
ID=12784087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4775283A Pending JPS59173564A (en) | 1983-03-22 | 1983-03-22 | Automatic stopper for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59173564A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0405415A2 (en) * | 1989-06-26 | 1991-01-02 | Fuji Jukogyo Kabushiki Kaisha | Warning system for an engine |
| US5076250A (en) * | 1989-05-26 | 1991-12-31 | Fuji Jukogyo Kabushiki Kaisha | Engine shut-down device |
-
1983
- 1983-03-22 JP JP4775283A patent/JPS59173564A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076250A (en) * | 1989-05-26 | 1991-12-31 | Fuji Jukogyo Kabushiki Kaisha | Engine shut-down device |
| EP0405415A2 (en) * | 1989-06-26 | 1991-01-02 | Fuji Jukogyo Kabushiki Kaisha | Warning system for an engine |
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