JPS626086B2 - - Google Patents
Info
- Publication number
- JPS626086B2 JPS626086B2 JP54132463A JP13246379A JPS626086B2 JP S626086 B2 JPS626086 B2 JP S626086B2 JP 54132463 A JP54132463 A JP 54132463A JP 13246379 A JP13246379 A JP 13246379A JP S626086 B2 JPS626086 B2 JP S626086B2
- Authority
- JP
- Japan
- Prior art keywords
- emulsified fuel
- diesel engine
- fuel
- engine
- emulsified
- 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
- 239000000446 fuel Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
【発明の詳細な説明】
デイーゼル機関の燃焼改善やNOx低減のため
に、燃料油に水を混入し乳化させた乳化燃料を使
用することは、これ迄一般に良く知られている。DETAILED DESCRIPTION OF THE INVENTION It is generally well known that emulsified fuel, which is obtained by mixing water with fuel oil and emulsifying it, is used to improve combustion and reduce NOx in diesel engines.
しかしながら、この乳化燃料をデイーゼル機関
に使用すると、デイーゼル機関が始動しにくくな
る欠点があつた。 However, when this emulsified fuel is used in a diesel engine, there is a drawback that the diesel engine becomes difficult to start.
この欠点を除去するために、気温が低い状態で
始動する場合には、予め機関を停止する前に、燃
料を乳化燃料から純粋に燃料に切換えてから停止
し、始動時に純粋な燃料で始動し、始動後、乳化
燃料に切換えるようにしたものがあつたが、操作
が面倒で構造が複雑であつた。 To eliminate this drawback, when starting the engine at low temperatures, switch the fuel from emulsified fuel to pure fuel before stopping the engine, and then start with pure fuel when starting. There was a model that switched to emulsified fuel after startup, but the operation was troublesome and the structure was complicated.
本発明はこのような難点を克服したデイーゼル
機関の改良に係り、乳化燃料を使用するデイーゼ
ル機関において、デイーゼル機関の排気管内に該
排気管の通路面積を調整するための排気絞り装置
を設けるとともに、乳化燃料中の水分の割合に応
じて前記排気絞り装置を作動せしめる制御装置を
設けたことを特徴とするもので、その目的とする
処は、乳化燃料を使用したままでデイーゼル機関
の始動を容易に行なうことができる始動補助装置
を供する点にある。 The present invention relates to an improvement of a diesel engine that overcomes such difficulties, and in a diesel engine that uses emulsified fuel, an exhaust throttle device is provided in the exhaust pipe of the diesel engine for adjusting the passage area of the exhaust pipe, and The present invention is characterized in that it is provided with a control device that operates the exhaust throttle device according to the proportion of water in the emulsified fuel, and its purpose is to facilitate starting of the diesel engine while using the emulsified fuel. The object of the present invention is to provide a starting aid device that can perform the following steps.
本発明は、前記したように乳化燃料を使用する
デイーゼル機関において、デイーゼル機関の排気
管内に該排気管の通路面積を調整するための排気
絞り装置を設けるとともに、乳化燃料中の水分の
割合に応じて前記排気絞り装置を作動せしめる制
御装置を設けたため、乳化燃料中の水分の割合が
仮令高くてデイーゼル機関の始動性が悪くても、
前記制御装置により前記排気絞り装置を作動さ
せ、デイーゼル機関の背圧を高めて、シリンダ内
の圧縮温度を高め、デイーゼル機関を頗る容易に
始動させることができる。 As described above, in a diesel engine using emulsified fuel, the present invention provides an exhaust throttle device in the exhaust pipe of the diesel engine for adjusting the passage area of the exhaust pipe, and also adjusts the passage area of the exhaust pipe according to the moisture content in the emulsified fuel. Since a control device is provided to operate the exhaust throttle device, even if the moisture content in the emulsified fuel is high and the diesel engine has poor startability,
The control device operates the exhaust throttle device to increase the back pressure of the diesel engine, increase the compression temperature in the cylinder, and make it possible to start the diesel engine with great ease.
以下本発明を図示の実施例について説明する
と、１はデイーゼル機関で、同デイーゼル機関１
においては、乳化燃料製造装置２で作られた乳化
燃料は乳化燃料供給管３を介してデイーゼル機関
１の燃料噴射ポンプ（図示されず）に供給され、
その一部は戻り管４および乳化燃料タインク５を
介して乳化燃料製造装置２に返戻され、残部は図
示されないノズルよりシリンダ内に噴射されるよ
うになつている。 The present invention will be described below with reference to the illustrated embodiments. Reference numeral 1 denotes a diesel engine;
In the emulsified fuel production device 2, the emulsified fuel is supplied to the fuel injection pump (not shown) of the diesel engine 1 via the emulsified fuel supply pipe 3.
A part of the emulsified fuel is returned to the emulsified fuel production apparatus 2 via the return pipe 4 and the emulsified fuel ink 5, and the remaining part is injected into the cylinder from a nozzle (not shown).
また燃料は燃料供給量制御弁６を備えた燃料供
給管７を介して乳化燃料製造装置２に供給される
とともに、水は水供給量制御弁８を備えた水供給
管９を介して乳化燃料製造装置２に供給され、同
製造装置２で作られた乳化燃料中の水分の割合は
制御弁６，８で制御されるようになつている。 Further, fuel is supplied to the emulsified fuel production apparatus 2 through a fuel supply pipe 7 equipped with a fuel supply amount control valve 6, and water is supplied to the emulsified fuel through a water supply pipe 9 equipped with a water supply amount control valve 8. The proportion of water in the emulsified fuel supplied to the manufacturing device 2 and produced by the manufacturing device 2 is controlled by control valves 6 and 8.
さらにデイーゼル機関１の排気管１０内には、
ダンパー１１が配設されており、同ダンパー１１
は駆動装置１２でその開度を調整されるようにな
つている。 Furthermore, inside the exhaust pipe 10 of the diesel engine 1,
A damper 11 is provided, and the damper 11
The opening degree is adjusted by a drive device 12.
さらにまた乳化燃料供給管３内の水分の量を検
出し電気信号に変換する検出器１３が設けられ、
同検出器１３の出力端は増巾器１４を介して制御
器１５に接続されており、同制御器１５では、水
分の量とダンパ開度との関係が記憶されており、
機関停止の状態から暖機運転（図示されない検出
器で検出される）に到達する迄、検出器１３から
の水分の検出信号を受けて、これに適合するダン
パー開度をダンパー駆動装置１２に出力するよう
になつている。 Furthermore, a detector 13 is provided which detects the amount of moisture in the emulsified fuel supply pipe 3 and converts it into an electrical signal.
The output end of the detector 13 is connected to a controller 15 via an amplifier 14, and the controller 15 stores the relationship between the amount of moisture and the damper opening.
From the engine stop state to the time when the engine reaches warm-up operation (detected by a detector not shown), it receives a moisture detection signal from the detector 13 and outputs a corresponding damper opening degree to the damper drive device 12. I'm starting to do that.
従来の普通のデイーゼル機関において、乳化燃
料のままで機関を始動すると、乳化燃料は見掛け
のセタン価が低く着火し難いため、水分の添加割
合が多い状態では、機関が始動しない場合があ
る。 In a conventional diesel engine, if the engine is started with emulsified fuel, the emulsified fuel has a low apparent cetane number and is difficult to ignite, so if a large amount of water is added, the engine may not start.
しかしながら図示の実施例は前記したように構
成されているので、機関の始動時に、乳化燃料供
給管３内の乳化燃料の水分の量が検出され、その
水分の割合に応じて、制御器１５により駆動装置
１２が作動されてダンパー１１が適宜開閉され、
最適の状態で排気管１０が絞られ、デイーゼル機
関の背圧が高められて、掃気効率が悪化され、シ
リンダ内に排ガスの一部が残留され、シリンダ内
の圧縮温度が高められ、始動が頗る容易に行なわ
れる。 However, since the illustrated embodiment is configured as described above, when the engine is started, the amount of water in the emulsified fuel in the emulsified fuel supply pipe 3 is detected, and the controller 15 controls the amount of water in the emulsified fuel in accordance with the percentage of water. The drive device 12 is operated to open and close the damper 11 as appropriate.
In an optimal condition, the exhaust pipe 10 is throttled, the back pressure of the diesel engine is increased, the scavenging efficiency is deteriorated, a part of the exhaust gas remains in the cylinder, the compression temperature in the cylinder is increased, and starting is difficult. easily done.
また前記実施例では、排気管１０の絞りが適切
であるため、掃気効率の低下による燃焼の悪化が
最小限に留められ、シリンダ内や排気通路内の汚
れが防止される。 Furthermore, in the embodiment described above, since the exhaust pipe 10 is appropriately throttled, deterioration of combustion due to a decrease in scavenging efficiency is kept to a minimum, and contamination in the cylinder and exhaust passage is prevented.
このように前記実施例においては、デイーゼル
機関の発停の際に燃料の切換を必要としなくな
り、乳化燃料のままでデイーゼル機関を発停でき
るので、操作が極めて易しくなる。 In this manner, in the embodiment described above, there is no need to switch the fuel when starting and stopping the diesel engine, and the diesel engine can be started and stopped using emulsified fuel, making the operation extremely easy.
以上本発明を実施例について説明したが、勿論
本発明はこのような実施例にだけ局限されるもの
ではなく、本発明の精神を逸脱しない範囲内で
種々の設計の改変を施しうるものである。 Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .
図面は本発明に係るデイーゼル機関の始動補助
装置の一実施例を図示した概略図である。
１……デイーゼル機関、２……乳化燃料製造装
置、３……乳化燃料供給管、４……乳化燃料戻り
管、５……乳化燃料タンク、６……燃料供給量制
御弁、７……燃料供給管、８……水供給量制御
弁、９……水供給管、１０……排気管、１１……
ダンパー、１２……ダンパー駆動装置、１３……
検出器、１４……増巾器、１５……制御器。
The drawing is a schematic diagram illustrating an embodiment of a starting assist device for a diesel engine according to the present invention. DESCRIPTION OF SYMBOLS 1... Diesel engine, 2... Emulsified fuel manufacturing device, 3... Emulsified fuel supply pipe, 4... Emulsified fuel return pipe, 5... Emulsified fuel tank, 6... Fuel supply amount control valve, 7... Fuel Supply pipe, 8...Water supply amount control valve, 9...Water supply pipe, 10...Exhaust pipe, 11...
Damper, 12... Damper drive device, 13...
Detector, 14...amplifier, 15...controller.
Claims (1)
て、デイーゼル機関の排気管内に該排気管の通路
面積を調整するための排気絞り装置を設けるとと
もに、乳化燃料中の水分の割合に応じて前記排気
絞り装置を作動せしめる制御装置を設けたことを
特徴とするデイーゼル機関の始動補助装置。1. In a diesel engine that uses emulsified fuel, an exhaust throttle device is provided in the exhaust pipe of the diesel engine to adjust the passage area of the exhaust pipe, and the exhaust throttle device is operated according to the proportion of water in the emulsified fuel. 1. A starting assist device for a diesel engine, characterized in that it is equipped with a control device for controlling the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13246379A JPS5656939A (en) | 1979-10-16 | 1979-10-16 | Auxiliary starting apparatus for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13246379A JPS5656939A (en) | 1979-10-16 | 1979-10-16 | Auxiliary starting apparatus for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5656939A JPS5656939A (en) | 1981-05-19 |
| JPS626086B2 true JPS626086B2 (en) | 1987-02-09 |
Family
ID=15081949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13246379A Granted JPS5656939A (en) | 1979-10-16 | 1979-10-16 | Auxiliary starting apparatus for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5656939A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002339764A (en) | 2001-03-13 | 2002-11-27 | Komatsu Ltd | Diesel engine |
-
1979
- 1979-10-16 JP JP13246379A patent/JPS5656939A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5656939A (en) | 1981-05-19 |
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