JPH0510226A - Preheating device of auxiliary chamber type water-cooled diesel engine - Google Patents
Preheating device of auxiliary chamber type water-cooled diesel engineInfo
- Publication number
- JPH0510226A JPH0510226A JP18551891A JP18551891A JPH0510226A JP H0510226 A JPH0510226 A JP H0510226A JP 18551891 A JP18551891 A JP 18551891A JP 18551891 A JP18551891 A JP 18551891A JP H0510226 A JPH0510226 A JP H0510226A
- Authority
- JP
- Japan
- Prior art keywords
- water temperature
- combustion chamber
- glow plug
- diesel engine
- water
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、副室式水冷ディーゼル
エンジンの予熱装置に関し、寒冷時にもディーゼルエン
ジンを瞬時に始動できるとともに、青白煙を防止できる
ものを提供する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a preheating device for a sub-chamber type water-cooled diesel engine, which can instantly start the diesel engine even in cold weather and can prevent bluish white smoke.
【０００２】[0002]
【従来の技術】本発明の対象となる副室式水冷ディーゼ
ルエンジンの予熱装置の基本構造は、図１又は図２に示
すように、水冷ディーゼルエンジンＥのシリンダヘッド
１に副燃焼室２とヘッドジャケット３を形成し、ヘッド
ジャケット３の少なくとも一部を副燃焼室２の周囲に配
置し、シリンダヘッド１にグロープラグ５を付設し、副
燃焼室２をグロープラグ５で予熱可能に構成した形式の
ものである。2. Description of the Related Art As shown in FIG. 1 or FIG. 2, the basic structure of a preheating device for a sub-chamber type water-cooled diesel engine is a cylinder head 1 of a water-cooled diesel engine E, a sub-combustion chamber 2 and a head. A type in which a jacket 3 is formed, at least a part of the head jacket 3 is arranged around the auxiliary combustion chamber 2, a glow plug 5 is attached to the cylinder head 1, and the auxiliary combustion chamber 2 can be preheated by the glow plug 5. belongs to.
【０００３】この形式の従来技術としては、図２に示す
ように、副燃焼室２にグロープラグ５を突入させ、副燃
焼室２内の圧縮空気を直接予熱するようにしたものが一
般的である。As a conventional technique of this type, as shown in FIG. 2, a glow plug 5 is rushed into the auxiliary combustion chamber 2 to directly preheat the compressed air in the auxiliary combustion chamber 2. is there.
【０００４】[0004]
【発明が解決しようとする課題】最近では、グロープラ
グの性能が向上し、速熱タイプの開発に見るように、寒
冷時でもエンジンの始動を促進できるようになってい
る。しかしながら、始動前にキースイッチを予熱位置に
入れ、副燃焼室２を予熱する上記従来技術の構造では、
例えば、副燃焼室２の雰囲気温度がー１５℃の場合に
は、予熱に５秒の時間が必要であり、特に、緊急を要す
るビル内の非常発電用エンジンなどでは、問題が大き
い。本発明は、瞬時にディーゼルエンジンを始動するこ
とを技術的課題とする。Recently, the performance of the glow plug has been improved and, as seen in the development of the rapid heating type, it is possible to accelerate the engine start even in cold weather. However, in the above-mentioned prior art structure in which the key switch is placed in the preheating position before starting to preheat the auxiliary combustion chamber 2,
For example, when the ambient temperature of the sub-combustion chamber 2 is −15 ° C., it takes 5 seconds to preheat, and this is a serious problem especially in an emergency power generation engine in a building where an emergency is required. The technical problem of the present invention is to instantly start a diesel engine.
【０００５】[0005]
【課題を解決するための手段】上記課題を達成するため
の手段を、実施例を示す図面により以下に説明する。即
ち、本発明は、前記基本構造の副室式水冷ディーゼルエ
ンジンの予熱装置において、副燃焼室２の周囲の副燃焼
室側ヘッドジャケット４にグロープラグ５及び水温検出
器６を臨ませ、グロープラグ５を制御装置７を介して水
温検出器６に連動して、水温検出器６の検出水温Ｔが予
熱設定水温Ｔ0以下になると、グロープラグ５が副燃焼
室側ヘッドジャケット４の冷却水を予熱して、ディーゼ
ルエンジンＥを瞬時始動可能にするとともに、水温検出
器６の検出水温Ｔが予熱設定水温Ｔ0より高くなると、
グロープラグ５を予熱解除するように構成したことを特
徴とするものである。上記副室式ディーゼルエンジンと
は、予燃焼室式ディーゼルエンジンと渦流室式ディーゼ
ルエンジンの両方を含む。Means for achieving the above object will be described below with reference to the drawings illustrating an embodiment. That is, according to the present invention, in the preheating device for the sub-chamber type water-cooled diesel engine having the basic structure, the glow plug 5 and the water temperature detector 6 are made to face the sub-combustion chamber side head jacket 4 around the sub-combustion chamber 2, and the glow plug When the detected water temperature T of the water temperature detector 6 becomes equal to or lower than the preheat set water temperature T 0 by interlocking 5 with the water temperature detector 6 via the control device 7, the glow plug 5 removes the cooling water of the auxiliary combustion chamber side head jacket 4. When preheating is performed and the diesel engine E can be instantly started, and the detected water temperature T of the water temperature detector 6 becomes higher than the preheating set water temperature T 0 ,
The glow plug 5 is characterized by being preheated. The sub-chamber diesel engine includes both a pre-combustion chamber diesel engine and a swirl chamber diesel engine.
【０００６】[0006]
【作用】副燃焼室側ヘッドジャケット４にグロープラグ
５を臨ませることにより、寒冷時になると水温検出器６
の検出水温Ｔが予熱設定水温Ｔ0以下になって、エンジ
ンＥの停止中でも、グロープラグ５が副燃焼室側ヘッド
ジャケット４の冷却水を予熱するので、寒冷時には副燃
焼室２の周囲の冷却水を常に暖めて、その内側の副燃焼
室２を混合気が円滑に燃焼できる温度状態に保持する。[Function] By making the glow plug 5 face the head jacket 4 on the side of the auxiliary combustion chamber, the water temperature detector 6 is provided when it is cold.
Detection temperature T is equal to or lower than the preheating set temperature T 0 of the even during stop of the engine E, since the glow plug 5 is to preheat the cooling water of the auxiliary combustion chamber side head jacket 4, at the time of cold cooling around the auxiliary combustion chamber 2 The water is always warmed to keep the sub-combustion chamber 2 inside the water at a temperature at which the air-fuel mixture can smoothly burn.
【０００７】[0007]
【発明の効果】寒冷時にはグロープラグによりヘッドジ
ャケット内の冷却水を予熱し、ヘッドジャケットの内側
の副燃焼室を常に暖めるので、ディーゼルエンジンを瞬
時に始動できる。冷却水の予熱により副燃焼室を暖め
て、燃焼温度が低くなるのを回避できるので、燃料の燃
え残りがなくなり、始動時の青白煙の発生を円滑に防止
できる。In cold weather, the glow plug preheats the cooling water in the head jacket and always warms the sub combustion chamber inside the head jacket, so that the diesel engine can be instantly started. By preheating the cooling water, the auxiliary combustion chamber can be warmed and the combustion temperature can be prevented from lowering, so that the unburned residue of the fuel can be eliminated and the generation of bluish white smoke at the start can be smoothly prevented.
【０００８】[0008]
【実施例】以下、本発明の実施例を図面に基づいて述べ
る。図１は渦流室式頭上弁水冷縦型ディーゼルエンジン
の要部縦断面図であって、水冷縦型ディーゼルエンジン
Ｅはビル内非常発電用のエンジンであって、当該ディー
ゼルエンジンＥのシリンダヘッド３の下面側に副燃焼室
２を形成し、副燃焼室２にシリンダヘッド１の上方から
副燃焼室２内に燃料噴射ノズル１０を突入させる。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal cross-sectional view of a main part of a swirl chamber type overhead valve water-cooled vertical diesel engine, in which a water-cooled vertical diesel engine E is an engine for emergency power generation in a building, and the cylinder head 3 of the diesel engine E is The sub combustion chamber 2 is formed on the lower surface side, and the fuel injection nozzle 10 is inserted into the sub combustion chamber 2 from above the cylinder head 1.
【０００９】上記シリンダヘッド１の肉壁内に均一にヘ
ッドジャケット３を開け、ヘッドジャケット３の少なく
とも一部を副燃焼室２を取り囲むようにして形成し、副
燃焼室２の周囲の当該副燃焼室側ヘッドジャケット４に
グロープラグ５及びサーミスタから成る水温検出器６を
突入させ、グロープラグ５を制御装置７を介して水温検
出器６に連動し、制御装置７に給電装置８(例えば、ビル
内の商用電源)を連動して、制御装置７を介して給電装
置８からグロープラグ５に電力を供給可能に構成する。The head jacket 3 is evenly opened in the wall of the cylinder head 1, and at least a part of the head jacket 3 is formed so as to surround the auxiliary combustion chamber 2, and the auxiliary combustion around the auxiliary combustion chamber 2 is performed. A water temperature detector 6 including a glow plug 5 and a thermistor is inserted into the room-side head jacket 4, the glow plug 5 is interlocked with the water temperature detector 6 via a controller 7, and the controller 7 is connected to a power supply device 8 (for example, a building). It is configured such that the power can be supplied from the power supply device 8 to the glow plug 5 via the control device 7 in conjunction with the commercial power supply).
【００１０】この場合、水温検出器６の検出水温Ｔが予
熱設定温度Ｔ0(例えば、５℃)以下になると、グロープラ
グ５は給電装置８からの給電により副燃焼室側ヘッドジ
ャケット４の冷却水を予熱するとともに、水温検出器６
の検出水温Ｔが予熱設定水温Ｔ0より高くなると、給電
装置８からの給電をカットしてグロープラグ５を予熱解
除するように構成する。In this case, when the detected water temperature T of the water temperature detector 6 becomes equal to or lower than the preheat set temperature T 0 (for example, 5 ° C.), the glow plug 5 is cooled by the power feeding device 8 to cool the auxiliary combustion chamber side head jacket 4. Water temperature detector 6 while preheating water
When the detected water temperature T is higher than the preheat set water temperature T 0 , the power supply from the power supply device 8 is cut off and the glow plug 5 is preheated.
【００１１】そこで、本実施例の機能を述べる。寒冷時
には、水温検出器６の検出水温Ｔが予熱設定水温Ｔ0以
下になるので、エンジンＥの停止中であっても、制御装
置７の指令により商用電源８からの給電でグロープラグ
５がヘッドジャケット４の冷却水を予熱し、副燃焼室２
を予熱設定温度Ｔ0、例えば５℃付近に暖める。このた
め、副燃焼室２は混合気が円滑に燃焼できる温度状態に
保持され、ディーゼルエンジンＥを瞬時に始動できる。The function of this embodiment will be described. During cold weather, the detected water temperature T of the water temperature detector 6 becomes equal to or lower than the preheat set water temperature T 0. Therefore, even when the engine E is stopped, the glow plug 5 is powered by the power from the commercial power source 8 according to a command from the control device 7. Preheat the cooling water in the jacket 4 and
Is heated to a preheating set temperature T 0 , for example, around 5 ° C. Therefore, the auxiliary combustion chamber 2 is maintained in a temperature state where the air-fuel mixture can be smoothly burned, and the diesel engine E can be instantly started.
【００１２】また、冷却水の予熱により副燃焼室２を暖
めて、燃焼温度の低い状態を回避できるので、燃焼時の
燃え残りがなくなり、始動時における青白煙の発生を防
止できる。Further, since the sub-combustion chamber 2 can be warmed by preheating the cooling water to avoid a state where the combustion temperature is low, there is no unburned residue at the time of combustion and it is possible to prevent generation of bluish white smoke at the time of starting.
【００１３】一方、温暖時には、水温検出器６の検出水
温Ｔが予熱設定水温Ｔ0より高くなるので、制御装置７
はグロープラグ５を予熱解除し、給電装置８の電力を無
駄に使用することはない。On the other hand, when the temperature is warm, the detected water temperature T of the water temperature detector 6 becomes higher than the preheat set water temperature T 0 , so the controller 7
Does not preheat the glow plug 5 and wastefully uses the power of the power supply device 8.
【００１４】尚、本発明は、副燃焼室２の周囲に満たさ
れる冷却水をグロープラグで暖めて、ディーゼルエンジ
ンＥを瞬時に始動することを特徴とするので、本来的な
意味でのグロープラグ５ａ(即ち、従来技術で示した副燃
焼室予熱用グロープラグ)の配置の有無は問わない。つ
まり、図１の仮想線で示すように、ヘッドジャケット用
のグロープラグ５の外に、副燃焼室予熱用グロープラグ
５ａを副燃焼室２内に突入させても良いし、副燃焼室予
熱用グロープラグ５ａは省略して、ヘッドジャケット用
グロープラグ５のみを水冷ディーゼルエンジンＥに配置
しても差し支えない。The present invention is characterized in that the cooling water filled around the auxiliary combustion chamber 2 is warmed by the glow plug to instantly start the diesel engine E. Therefore, the glow plug in the original sense is characterized. It does not matter whether or not the 5a (that is, the glow plug for preheating the auxiliary combustion chamber shown in the prior art) is arranged. That is, as shown by the phantom line in FIG. 1, the auxiliary combustion chamber preheating glow plug 5a may be projected into the auxiliary combustion chamber 2 outside the head jacket glow plug 5, or the auxiliary combustion chamber preheating may be performed. The glow plug 5a may be omitted and only the head jacket glow plug 5 may be arranged in the water-cooled diesel engine E.
【図１】渦流室式頭上弁水冷縦型ディーゼルエンジンの
要部縦断面図である。FIG. 1 is a longitudinal cross-sectional view of a main part of a vertical chamber water-cooled vertical diesel engine of a swirl chamber type.
【図２】従来技術を示す図１の相当図である。FIG. 2 is a view equivalent to FIG. 1 showing a conventional technique.
１ シリンダヘッド ２ 副燃焼室 ３ ヘッドジャケット ４ 副燃焼室側ヘッドジャケット ５ グロープラグ ６ 水温検出器 ７ 制御装置 ８ 給電装置 Ｅ 水冷ディーゼルエンジン Ｔ0 ７の予熱設定温度 Ｔ ６の検出水温1 Cylinder Head 2 Secondary Combustion Chamber 3 Head Jacket 4 Secondary Combustion Chamber Side Head Jacket 5 Glow Plug 6 Water Temperature Detector 7 Control Device 8 Power Supply Device E Water Cooled Diesel Engine T 0 7 Preheat Set Temperature T 6 Detected Water Temperature
Claims (1)
ヘッド(１)に副燃焼室(２)とヘッドジャケット(３)を形
成し、ヘッドジャケット(３)の少なくとも一部を副燃焼
室(２)の周囲に配置し、シリンダヘッド(１)にグロープ
ラグ(５)を付設し、副燃焼室(２)をグロープラグ(５)で
予熱可能に構成した副室式水冷ディーゼルエンジンの予
熱装置において、 副燃焼室(２)の周囲の副燃焼室側ヘッドジャケット(４)
にグロープラグ(５)及び水温検出器(６)を臨ませ、グロ
ープラグ(５)を制御装置(７)を介して水温検出器(６)に
連動して、水温検出器(６)の検出水温(Ｔ)が予熱設定水
温(Ｔ0)以下になると、グロープラグ(５)が副燃焼室側
ヘッドジャケット(４)の冷却水を予熱して、ディーゼル
エンジン(Ｅ)を瞬時始動可能にするとともに、 水温検出器(６)の検出水温(Ｔ)が予熱設定水温(Ｔ0)よ
り高くなると、グロープラグ(５)を予熱解除するように
構成したことを特徴とする副室式水冷ディーゼルエンジ
ンの予熱装置。Claims: 1. A sub-combustion chamber (2) and a head jacket (3) are formed in a cylinder head (1) of a water-cooled diesel engine (E), and at least a part of the head jacket (3) is formed. A sub-chamber water-cooled diesel which is arranged around the sub-combustion chamber (2), a glow plug (5) is attached to the cylinder head (1), and the sub-combustion chamber (2) can be preheated by the glow plug (5). In the engine preheater, the auxiliary combustion chamber side head jacket (4) around the auxiliary combustion chamber (2)
The glow plug (5) and the water temperature detector (6) are exposed to the inside, and the glow plug (5) is interlocked with the water temperature detector (6) through the control device (7) to detect the water temperature detector (6). When the water temperature (T) becomes equal to or lower than the preheat set water temperature (T 0 ), the glow plug (5) preheats the cooling water of the sub-combustion chamber side head jacket (4) to enable the diesel engine (E) to be instantly started. In addition, when the detected water temperature (T) of the water temperature detector (6) becomes higher than the preheat set water temperature (T 0 ), the glow plug (5) is preheated and released. Preheating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18551891A JPH0510226A (en) | 1991-06-28 | 1991-06-28 | Preheating device of auxiliary chamber type water-cooled diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18551891A JPH0510226A (en) | 1991-06-28 | 1991-06-28 | Preheating device of auxiliary chamber type water-cooled diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0510226A true JPH0510226A (en) | 1993-01-19 |
Family
ID=16172195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18551891A Pending JPH0510226A (en) | 1991-06-28 | 1991-06-28 | Preheating device of auxiliary chamber type water-cooled diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0510226A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004245226A (en) * | 2003-02-14 | 2004-09-02 | Robert Bosch Gmbh | Method of controlling internal combustion engine for direct start |
| KR20060069942A (en) * | 2004-12-20 | 2006-06-23 | 현대중공업 주식회사 | Electric heater for front end module type diesel engine of ship |
| JP2009264216A (en) * | 2008-04-24 | 2009-11-12 | Sanoh Industrial Co Ltd | Hydrogen storage alloy-using heating system |
| JP2013204498A (en) * | 2012-03-28 | 2013-10-07 | Yanmar Co Ltd | Fuel injection pump |
-
1991
- 1991-06-28 JP JP18551891A patent/JPH0510226A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004245226A (en) * | 2003-02-14 | 2004-09-02 | Robert Bosch Gmbh | Method of controlling internal combustion engine for direct start |
| KR20060069942A (en) * | 2004-12-20 | 2006-06-23 | 현대중공업 주식회사 | Electric heater for front end module type diesel engine of ship |
| JP2009264216A (en) * | 2008-04-24 | 2009-11-12 | Sanoh Industrial Co Ltd | Hydrogen storage alloy-using heating system |
| JP2013204498A (en) * | 2012-03-28 | 2013-10-07 | Yanmar Co Ltd | Fuel injection pump |
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