JPS594551B2 - Diesel engine starting aid - Google Patents
Diesel engine starting aidInfo
- Publication number
- JPS594551B2 JPS594551B2 JP9233078A JP9233078A JPS594551B2 JP S594551 B2 JPS594551 B2 JP S594551B2 JP 9233078 A JP9233078 A JP 9233078A JP 9233078 A JP9233078 A JP 9233078A JP S594551 B2 JPS594551 B2 JP S594551B2
- Authority
- JP
- Japan
- Prior art keywords
- starting
- diesel engine
- spark plug
- present
- engine starting
- 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
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
- F02P15/12—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 having means for strengthening spark during starting
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)
Description
【発明の詳細な説明】
本発明は寒冷時にディーゼル機関を始動させるときに、
その始動性を向上するための補助装置に関する。[Detailed Description of the Invention] The present invention provides the following advantages when starting a diesel engine in cold weather:
This invention relates to an auxiliary device for improving startability.
従来、寒冷時の始動補助装置として、吸気加熱による装
置が広く知られている。BACKGROUND ART Conventionally, a device that uses intake air heating is widely known as a starting assist device in cold weather.
これには、燃焼式と電熱式とがあり、いずれも始動時に
シリンダに吸入される空気を加熱する構造となつている
。これらの装置は始動に先立つていわゆる予熱操作が必
要であり、寒冷下に３０秒ないし１分程の待期を要する
この操作は、運転者から嫌われている。また、燃焼式は
初爆が遅れる欠点があり、電熱式は電池の消耗が大きい
欠点がある。また、これらの加熱による始動補助装置は
、かなり大型の装置になり、配管系や制御系も複雑とな
る。本発明は、予熱操作を不要とし、電池消耗も小さく
、しかも装置を小型に構成することのできる始動補助装
置を提供することを目的とする。There are two types: combustion type and electric heating type, both of which heat the air sucked into the cylinder during startup. These devices require a so-called preheating operation before starting, and drivers dislike this operation, which requires a waiting period of about 30 seconds to 1 minute in cold weather. Additionally, the combustion type has the disadvantage that the initial explosion is delayed, and the electric heating type has the disadvantage of large battery consumption. Further, these heating-based starting assist devices are quite large devices, and the piping system and control system are also complicated. SUMMARY OF THE INVENTION An object of the present invention is to provide a starting assist device that does not require a preheating operation, has low battery consumption, and can be constructed in a compact size.
本発明は、ディーゼル機関のシリンダ内に始動用の点火
栓を設け、始動クランキング時のみこの点火栓に連続的
な高圧放電を発生させることを特徴とする。この高圧放
電は始動時のピストンの行程の無関係に連続的に放電さ
せても、あるいはピストンの爆発行程上死点附近のみで
連続的に放電させてもよい。The present invention is characterized in that an ignition plug for starting is provided in the cylinder of a diesel engine, and continuous high-pressure discharge is caused to occur in the ignition plug only during starting cranking. This high-pressure discharge may be caused to be continuously discharged regardless of the stroke of the piston at the time of starting, or may be caused to be continuously discharged only near the top dead center of the piston's explosive stroke.
また、多気筒機関では、この始動補助用の点火栓を全て
の気筒に設ける必要はなく、一部の気筒にのみ設けるこ
とにより機能する。Furthermore, in a multi-cylinder engine, it is not necessary to provide this starting aid spark plug in all cylinders, but it functions by providing it only in some cylinders.
一部の複数の気筒にのみこれを設ける場合には、爆発行
程の連続する気筒に設けることが好ましい。次に、実施
例図面により詳しく説明する。If this is provided only in some of the cylinders, it is preferable to provide it in cylinders that have successive explosion strokes. Next, the present invention will be explained in detail with reference to the drawings.
第１図は本発明実施例のシリンダの部分構造図である。FIG. 1 is a partial structural diagram of a cylinder according to an embodiment of the present invention.
シリンダ１、ピストン２、燃料噴射ノズル３を備えた公
知のディーゼル機関の燃焼室内に、点火栓４が備えられ
ている。この点火栓４は始動゛時のみ高圧放電が行われ
る。第２図は本発明実施例の電気回路構成図である。A spark plug 4 is provided in a combustion chamber of a known diesel engine having a cylinder 1, a piston 2, and a fuel injection nozzle 3. This ignition plug 4 generates a high-pressure discharge only at the time of starting. FIG. 2 is a block diagram of an electric circuit according to an embodiment of the present invention.
イグナイタ１０は、入力に断続を繰返す直流が与えられ
ると、出力に高電圧の得られる公知の回路である。電源
１１は、始動スイッチ１２および接点１３を介して、こ
のイグナイタ１０に与えられている。接点１３は、常時
スプリングカで閉じていて、コイル１４に電流が流れる
と開くように構成された接点であつて、このコイル１４
には、この接点１３および機関の回転に連動して開閉す
る接点１５により電流が与えられるよう構成されている
。一方、イグナイタ１０の出力は、デイストリビユータ
１８を介して、２個の点火栓４に分配されるよう構成さ
れている。The igniter 10 is a known circuit that produces a high voltage at the output when a DC signal that repeats intermittent cycles is applied to the input. A power source 11 is applied to the igniter 10 via a starting switch 12 and contacts 13. The contact 13 is a contact that is always closed with a spring force and is configured to open when current flows through the coil 14.
A current is applied to the engine through this contact 13 and a contact 15 which opens and closes in conjunction with the rotation of the engine. On the other hand, the output of the igniter 10 is configured to be distributed to the two spark plugs 4 via a distributor 18.
点火栓４は第１図で説明したように、ディーゼル機関の
燃焼室内に設けられたものであつて、この場合には多気
筒機関のうち連続して爆発する２個の気筒（例えば＋１
、≠６）に配置されている。また、デイストリビユータ
１８と接点１５は、機関の回転に連動し、この点火栓の
配置された気筒のピストン動作に合わせて、その爆発行
程で高圧が放出されるよう構成されている。このような
装置によれば、燃焼室内に燃料噴射が行われる時期に、
点火栓に高圧火花放電が連続して行われる。As explained in FIG. 1, the spark plug 4 is installed inside the combustion chamber of a diesel engine, and in this case, the spark plug 4 is installed in the combustion chamber of the diesel engine, and in this case, the spark plug 4 is used for two cylinders that explode in succession (for example, +1
,≠6). Further, the distributor 18 and the contact point 15 are configured to be linked to the rotation of the engine, and to release high pressure during the explosion stroke in accordance with the piston movement of the cylinder in which the spark plug is arranged. According to such a device, when fuel is injected into the combustion chamber,
A continuous high-voltage spark discharge is applied to the spark plug.
これは通常のガソリン機関の点火栓の動作とは異なり、
連続する放電が行われることに特徴がある。この動作は
前述の接点１３がコイル１４により振動することにより
達成される。第３図は本発明の第２実施例の電気回路構
成図である。この例はデイストビユータあるいは接点等
を不要としたもので、イグナイタ１０は始動クランキン
グの期間中は連続的に動作して、点火栓４に対して連続
的に高電圧を与えるよう構成されたものである。この場
合点火栓４は原則として１個であるが、複数のシリンダ
に対して本発明を実施する場合には、そのシリンダの数
だけイグナイタ１０を並列に使用すればよい。この構成
では、デストリビユータ等のメカニズムを省いたもので
、現用の機関に対して容易に実施することのできる優れ
た特徴がある。This is different from the operation of a spark plug in a normal gasoline engine.
It is characterized by continuous discharge. This operation is achieved by the contact 13 mentioned above being vibrated by the coil 14. FIG. 3 is an electrical circuit configuration diagram of a second embodiment of the present invention. This example eliminates the need for a distviewer or contacts, and the igniter 10 is configured to operate continuously during the start cranking period to continuously apply high voltage to the ignition plug 4. be. In this case, the number of spark plugs 4 is one in principle, but when the present invention is applied to a plurality of cylinders, it is sufficient to use as many igniters 10 in parallel as there are cylinders. This configuration does not require a mechanism such as a distributor, and has an excellent feature that it can be easily implemented in current engines.
このように本発明の装置によれば、燃焼室内に霧状噴射
された燃料の極く一部が、高圧放電により点火され、こ
れが燃焼室内に燃え拡がるように動作する。As described above, according to the device of the present invention, a small portion of the fuel injected into the combustion chamber in atomized form is ignited by high-pressure discharge, and the device operates so that the flame spreads within the combustion chamber.
寒冷時の機開始動に際して、圧縮空気の温度が十分に着
火温度に上昇しないとき、本発明による装置は極めて効
果的である。本発明の装置では吸気の加熱、あるいは予
熱等を必要とせず、機構も簡単であり電池の消耗も小さ
い利点がある。The device according to the invention is particularly effective during cold start operations when the temperature of the compressed air does not rise sufficiently to the ignition temperature. The device of the present invention does not require heating or preheating of intake air, has a simple mechanism, and has the advantage of low battery consumption.
第１図は本発明実施例装置のシリンダ構造を示す図。
第２図は本発明実施例装置の電気回路構成図。第３図は
本発明の第２実施例装置の電気回路構成図。１・・・・
・・シリンダ、２・・・・・・ピストン３・・・・・・
燃料噴射ノズル、４・・・・・・点火栓、１０・・・・
・・イグナイタ、１１・・・・・・電源、１２・・・・
・・始動スイッチ、１３・・・・・・接点、１４・・・
・・・コイル１５・・・・・・接点、１８・・・・・・
デイストリビユータ。FIG. 1 is a diagram showing the cylinder structure of an apparatus according to an embodiment of the present invention. FIG. 2 is an electrical circuit configuration diagram of an apparatus according to an embodiment of the present invention. FIG. 3 is an electric circuit configuration diagram of a device according to a second embodiment of the present invention. 1...
...Cylinder, 2...Piston 3...
Fuel injection nozzle, 4... Spark plug, 10...
...Igniter, 11...Power supply, 12...
...Start switch, 13...Contact, 14...
...Coil 15...Contact, 18...
Day streamer.
Claims (1)
用の点火栓と、始動クランキング時にこの点火栓に連続
的な高電圧を与える電気回路とを備えたディーゼル機関
の始動補助装置。 ２ 点火栓は複数気筒のうちの一部の気筒について配置
されたことを特徴とする特許請求の範囲第１項に記載の
ディーゼル機関の始動補助装置。[Scope of Claims] 1. A diesel engine equipped with a starting spark plug arranged so that a high-pressure discharge occurs in the combustion chamber, and an electric circuit that applies a continuous high voltage to the spark plug during starting cranking. Starting aid. 2. The starting assist device for a diesel engine according to claim 1, wherein the spark plugs are arranged for some of the plurality of cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9233078A JPS594551B2 (en) | 1978-07-28 | 1978-07-28 | Diesel engine starting aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9233078A JPS594551B2 (en) | 1978-07-28 | 1978-07-28 | Diesel engine starting aid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5519941A JPS5519941A (en) | 1980-02-13 |
| JPS594551B2 true JPS594551B2 (en) | 1984-01-30 |
Family
ID=14051372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9233078A Expired JPS594551B2 (en) | 1978-07-28 | 1978-07-28 | Diesel engine starting aid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS594551B2 (en) |
-
1978
- 1978-07-28 JP JP9233078A patent/JPS594551B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5519941A (en) | 1980-02-13 |
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