JPS62261671A - Starting method for diesel engine and device thereof - Google Patents
Starting method for diesel engine and device thereofInfo
- Publication number
- JPS62261671A JPS62261671A JP10376786A JP10376786A JPS62261671A JP S62261671 A JPS62261671 A JP S62261671A JP 10376786 A JP10376786 A JP 10376786A JP 10376786 A JP10376786 A JP 10376786A JP S62261671 A JPS62261671 A JP S62261671A
- Authority
- JP
- Japan
- Prior art keywords
- compressed air
- diesel engine
- starting
- valve
- time
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000004880 explosion Methods 0.000 claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 239000007858 starting material Substances 0.000 abstract description 5
- 239000010687 lubricating oil Substances 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、圧縮空気を燃焼室内に供給してデイゼル機関
を始動せしめる方法、及び、上記の方法を用いてデイゼ
ル機関を始動する装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for starting a diesel engine by supplying compressed air into a combustion chamber, and an apparatus for starting a diesel engine using the above method. It is.
デイゼルエンジンは外気温の低いときは始動が困難にな
る。Diesel engines have difficulty starting when the outside temperature is low.
その理由は次の如く、である、潤滑用油脂が低温では高
粘度になってＩｆ！に関の回転に大きい抵抗を与えて始
動回転速度を低下させ、断熱圧縮による温度上昇を妨げ
る。この断熱圧縮の阻害は、吸入空気や噴霧燃料の温度
が低いことと相俟って燃料噴霧の発火、完爆を困難なら
しめる。The reason for this is as follows: Lubricating oils and fats become highly viscous at low temperatures, and If! It provides a large resistance to the rotation of the engine, lowers the starting rotation speed, and prevents the temperature rise due to adiabatic compression. This inhibition of adiabatic compression, together with the low temperatures of the intake air and the atomized fuel, makes it difficult for the fuel atomization to ignite and completely explode.
デイゼル機関などのように燃料噴射を行う内燃機関の燃
焼状態を改善する技術については、例えば特開昭５５−
５１９１８号が公知である。Regarding the technology to improve the combustion state of internal combustion engines that use fuel injection such as diesel engines, for example, Japanese Patent Application Laid-Open No. 1987-
No. 51918 is publicly known.
定常的な運転状態における燃焼状態の改善や、いわゆる
セルモータによる始動性の改善については種々の提案が
為されているが、空気始動のデイゼル機関の特性に基づ
いた始動性改善については、未だ実用価値の高い発明が
開示されていない。Various proposals have been made to improve combustion conditions under steady-state operating conditions and to improve startability using so-called starter motors, but improvements to startability based on the characteristics of air-start diesel engines still have little practical value. inventions with a high degree of accuracy have not been disclosed.
本発明は上述の事情に鑑みて為されたものであって、そ
の目的とするところは、圧縮空気槽に貯えられている有
限量の圧縮空気を有効に用いてデイゼル機関を確実に始
動し得る方法、及び同装置を提供するにある。The present invention has been made in view of the above-mentioned circumstances, and its purpose is to reliably start a diesel engine by effectively using the limited amount of compressed air stored in the compressed air tank. The present invention provides a method and an apparatus for the same.
Ｃ問題点を解決するための手段〕
上記の目的を達成するため、本発明に係るデイゼル機開
始動方法は、圧縮空気槽の圧縮空気をデイゼル機関に対
して所定時間だけ供給しても完爆しない場合は一旦圧縮
空気の供給を停止し、所定の時間間隔を置いて再度圧縮
空気を供給し、以下前記の供給停止、供給再開を繰返し
て間欠的に圧縮空気の供給を行うことを特徴とする。Means for Solving Problem C] In order to achieve the above object, the diesel engine starting method according to the present invention does not cause a complete explosion even if compressed air from the compressed air tank is supplied to the diesel engine for a predetermined period of time. If not, the supply of compressed air is temporarily stopped, the compressed air is supplied again at a predetermined time interval, and thereafter the above-mentioned supply stop and supply restart are repeated to supply compressed air intermittently. do.
また、本発明に係るデイゼル機開始動装置は前記の方法
を容易に実施してその効果を充分に発揮せしめるため、
圧縮空気を機関の燃焼室に供給する管路中に開閉弁を設
けると共に、該開閉弁を制御する自動制御機とを備え、
上記の自動制御装置はデイゼル機関の完爆を検出する手
段とタイマ手段とを備え、該デイゼル機関が完爆するに
至るまで所定の時間間隔で間欠的に開閉弁を開閉せしめ
て圧縮空気を間欠的に供給するように構成したものであ
ることを特徴とする。In addition, the diesel aircraft starting device according to the present invention allows the above-described method to be easily carried out and its effects to be fully exhibited;
An on-off valve is provided in a conduit that supplies compressed air to the combustion chamber of the engine, and an automatic controller that controls the on-off valve,
The above automatic control device includes a means for detecting a complete explosion of the diesel engine and a timer means, and intermittently opens and closes the on-off valve at predetermined time intervals until the diesel engine reaches a complete explosion, thereby intermittently supplying compressed air. It is characterized in that it is configured to supply
前記の方法によれば、一定時間の圧縮空気供給を行った
後に一定時間休止することによって１機関の潤滑油中に
生じている半固形物を流動化してその粘性抵抗を減少せ
しめるので、始動回転に対する抵抗がＩＩＭされて始動
回転速度が上昇し、圧縮点火作用が確実かつ完全に行わ
れるので、容易にかつ確実に完爆に成功し得る。According to the above method, by supplying compressed air for a certain period of time and then pausing for a certain period of time, the semi-solids occurring in the lubricating oil of one engine are fluidized and its viscous resistance is reduced, so that the starting rotation is reduced. The resistance to IIM increases, the starting rotational speed increases, and compression ignition is reliably and completely performed, so complete explosion can be easily and reliably achieved.
第２図は、本発明の始動方法を実施する為に構成した本
発明の始動装置のブロック図である。FIG. 2 is a block diagram of the starting device of the present invention configured to carry out the starting method of the present invention.
運転条件回路８に停電信号が入力されると、デイゼル機
関運転指令をタイマー回路７に出力する。When a power outage signal is input to the operating condition circuit 8, a diesel engine operating command is output to the timer circuit 7.
タイマー回路７は、一定時間始動弁開要求を開・閉回路
６に出力し、始動弁３が開し、空気槽４から圧縮空気が
デイゼル機関１に供給され、デイゼル機関１が回転する
ことにより発電機２が運転される。The timer circuit 7 outputs a request to open the starting valve for a certain period of time to the open/close circuit 6, the starting valve 3 opens, compressed air is supplied from the air tank 4 to the diesel engine 1, and the diesel engine 1 rotates. Generator 2 is operated.
本実施例では、デイゼル機関１及び発電機２の運転は、
発電機２の回転数により検出しており。In this embodiment, the operation of the diesel engine 1 and the generator 2 is as follows.
It is detected by the rotation speed of generator 2.
始動時における完爆（自立回転）の成否もこれによって
検出される。This also detects the success or failure of complete explosion (independent rotation) at the time of startup.
空気槽４への圧縮空気の供給は、空気槽４の圧力スイッ
チの接点を入・切回路９に取り込み、空気圧縮機５を運
転することによりなされる。Compressed air is supplied to the air tank 4 by introducing the contact point of the pressure switch of the air tank 4 into the on/off circuit 9 and operating the air compressor 5.
タイマー回路７からの一定時間の始動弁開要求によって
、デイゼル機関１が運転しない場合には、始動弁３を閉
し一定時間休止び始動弁３を関する。When the diesel engine 1 does not operate due to a request from the timer circuit 7 to open the starting valve for a certain period of time, the starting valve 3 is closed and the starting valve 3 is stopped for a certain period of time.
この動作を数回繰返す。Repeat this action several times.
第３図は本実施例におけるプラント全体の構成を示す系
統図である。FIG. 3 is a system diagram showing the overall configuration of the plant in this embodiment.
本例は、２台の電動ポンプ（６ＫＶ）１２を設置し、通
常時は受電設備２１から駆動電力が供給される。In this example, two electric pumps (6KV) 12 are installed, and drive power is normally supplied from the power receiving equipment 21.
本設置にて受電が停電した場合には電動ポンプ１２が２
台運転不可となる。この時、デイゼル機関１によって発
電機２を駆動させる。In the event of a power outage during this installation, the electric pump 12 will
The machine cannot be operated. At this time, the generator 2 is driven by the diesel engine 1.
第１図は前記の始動装Ｍ（第２図）を用いて本発明の始
動方法を実施した１例におけるフロー図である。FIG. 1 is a flowchart in one example of implementing the starting method of the present invention using the above-mentioned starting device M (FIG. 2).
ステップＳ１でデイゼル機関１の始動命令を確認し、ス
テップＳ２でデイゼル機開始動弁（第２図の図面参照番
号３）を開弁する。In step S1, a starting command for the diesel engine 1 is confirmed, and in step S2, the diesel engine starting valve (reference number 3 in FIG. 2) is opened.
ステップＳ３で、デイゼル機関１が自立運転状態に移行
（完ａｈ＞ したか否かを確かめる。この確認は第２図
に示した回転速度のセンサ２ａによって行われる。In step S3, it is confirmed whether the diesel engine 1 has transitioned to the self-sustaining state (ah>).This confirmation is performed by the rotational speed sensor 2a shown in FIG.
完爆しなかったときはステップＳ４によって何回目の圧
縮空気送入であるかを算え、所定回数以内であればタイ
マＴ１を介してステップＳ５により前記の始動弁３（第
２図）を閉じ、タイマＴ２によって所定時間だけ待った
後、ステップＳ２に返って前述の作動を繰返す。If a complete explosion has not occurred, the number of compressed air feeds is calculated in step S4, and if it is within a predetermined number of times, the starting valve 3 (FIG. 2) is closed via timer T1 in step S5. , after waiting for a predetermined time by timer T2, the process returns to step S2 and repeats the above-described operation.
完爆に成功したとき、又は、所定回数の圧縮空気供給を
行っても完爆しないときは、ステップＳ６に進んで始動
弁３を閉じる。When the complete explosion is successful, or when the complete explosion is not achieved even after supplying compressed air a predetermined number of times, the process proceeds to step S6 and the starter valve 3 is closed.
完爆に成功した場合に始動弁を閉じることは当然である
が、所定回数の圧縮空気供給を行っても完爆しないとき
は、何処かに故障が発生していることを疑わねばならな
い。It is natural to close the starter valve when a complete explosion is successful, but if a complete explosion does not occur even after supplying compressed air a predetermined number of times, we must suspect that a failure has occurred somewhere.
この故障を排除せずに始動操作を繰り返して。Repeat the starting operation without eliminating this malfunction.
貯えられていた圧縮空気を使い果たすと、始動は殆ど不
可能になる（圧縮空気を空気槽４に貯め直せば良い訳で
あるが、非常用デイゼル発電を行わねばならない情勢下
においては１通常、空気槽４に圧縮空気を貯め直すこと
は極めて困難である）。If the stored compressed air is used up, it will be almost impossible to start the engine (it is possible to store the compressed air in the air tank 4 again, but in situations where emergency diesel power generation must be performed It is extremely difficult to re-store compressed air in tank 4).
従って、数回（本実施例においては３回に設定した）の
連動に失敗したら、圧縮空気の送給を一旦停止して圧縮
空気を使い果たさないうちに始動不能原因を探求し、こ
れを排除しなければならな−）。Therefore, if interlocking fails several times (in this example, it was set to three times), the supply of compressed air is temporarily stopped, and the cause of the inability to start is investigated and eliminated before the compressed air is exhausted. I have to-).
本発明を実施する場合において、前記の圧縮空気の間欠
的な送給回数を何回にするかは任意に設定することが出
来る。When carrying out the present invention, the number of times the compressed air is intermittently fed can be arbitrarily set.
第４図は本実施例（所定回数３回）におけるタイムチャ
ートである。FIG. 4 is a time chart in this embodiment (three predetermined times).
第４図（Ａ）は１回で完爆（始動成功）した場合を示し
ている。即ち、デイゼル機関の始動指令信号に応じて始
動弁を開き、１回で完爆して「デイゼル機関運転カーブ
」が立ち上がった場合である。FIG. 4(A) shows a case where a complete explosion (successful startup) occurs in one attempt. That is, this is a case where the starting valve is opened in response to the starting command signal of the diesel engine, a complete explosion occurs in one go, and the "diesel engine operating curve" rises.
第４図（Ｂ）は３回で始動した場合を示している０本第
４図（Ｂ）、（Ｃ）に記入したｔｘ、を冨は、それぞれ
第１図のタイマＴｌ 、Ｔｚによって与えられた時間間
隔を表わしている。Figure 4 (B) shows the case where the engine is started three times. The tx values written in Figure 4 (B) and (C) are given by the timers Tl and Tz in Figure 1, respectively. represents the time interval.
第４図（Ｃ）は始動弁の開閉を３回繰返して完爆しなか
った場合である。FIG. 4(C) shows a case where the starter valve was opened and closed three times and a complete explosion did not occur.
本発明の始動方法によれば、寒冷時であっても間欠的な
圧縮空気の送付による間欠的な始動回転によって潤滑油
脂中の半固形成分を流動化させるので、確実に完爆させ
ることが出来るという優れた実用的効果を奏し、空気始
動式デイゼルエンジンの始動信頼性向上に貢献するとこ
ろ多大である。According to the starting method of the present invention, even in cold weather, the semi-solid components in the lubricating oil are fluidized by intermittent starting rotation by intermittent supply of compressed air, so complete explosion can be ensured. This has excellent practical effects and greatly contributes to improving the starting reliability of air-start diesel engines.
また、本発明の始動装置によれば、前記の始動方法を容
易に実施して、その効果を充分に発揮せしめることが出
来る。Further, according to the starting device of the present invention, the above-mentioned starting method can be easily carried out and its effects can be fully exhibited.
第１図は本発明の始動方法の１実施例を示すフロー図で
ある。第２図は本発明の始動装置の１実施例を示すブロ
ック図である。第３図は上記実施例におけるプラント全
体の構成を説明するための系統間である。第４図は前記
実施例におけるタイムチャートを描いた図表である。
■・・・デイゼル機関、２・・・発電機、３・・・始動
弁、４・・・空気槽、５・・・空気圧縮機（コンプレッ
サ）。
１１・・・遮断器。FIG. 1 is a flow diagram showing one embodiment of the starting method of the present invention. FIG. 2 is a block diagram showing one embodiment of the starting device of the present invention. FIG. 3 is a system diagram for explaining the overall configuration of the plant in the above embodiment. FIG. 4 is a diagram depicting a time chart in the embodiment. ■... Diesel engine, 2... Generator, 3... Starting valve, 4... Air tank, 5... Air compressor. 11... Circuit breaker.
Claims (1)
法において、圧縮空気槽内の圧縮空気をデイゼル機関に
対して所定時間だけ供給しても完爆しない場合は一旦圧
縮空気の供給を停止し、所定の時間間隔を置いて再度圧
縮空気を供給し、以下前記の供給停止、供給再開を繰返
して間欠的に圧縮空気の供給を行うことを特徴とするデ
イゼル機関の始動方法。 ２、圧縮空気を燃焼室内に供給してデイゼル機関を始動
せしめる装置において、上記の圧縮空気供給管路中に開
閉弁を設けると共に、該開閉弁を制御する自動制御機と
を備え、上記の自動制御装置はデイゼル機関の完爆を検
出する手段とタイマ手段とを備え、該デイゼル機関が完
爆するに至るまで所定の時間間隔で間欠的に開閉弁を開
閉せしめて圧縮空気を間欠的に供給するように構成した
ものであることを特徴とするデイゼル機関の始動装置。[Claims] 1. In a method for starting a diesel engine equipped with a pneumatic starting device, if the compressed air in the compressed air tank does not completely explode even after being supplied to the diesel engine for a predetermined period of time, the compressed air is Starting a diesel engine characterized by stopping the supply of air, supplying compressed air again at a predetermined time interval, and thereafter repeating the above-mentioned supply stop and restart to supply compressed air intermittently. Method. 2. A device for starting a diesel engine by supplying compressed air into a combustion chamber, which is equipped with an on-off valve in the compressed air supply pipe and an automatic controller for controlling the on-off valve, The control device includes a means for detecting a complete explosion of the diesel engine and a timer means, and intermittently opens and closes an on-off valve at predetermined time intervals until the diesel engine reaches a complete explosion, thereby intermittently supplying compressed air. A starting device for a diesel engine, characterized in that it is configured to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61103767A JPH0643824B2 (en) | 1986-05-08 | 1986-05-08 | Method and device for starting diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61103767A JPH0643824B2 (en) | 1986-05-08 | 1986-05-08 | Method and device for starting diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62261671A true JPS62261671A (en) | 1987-11-13 |
| JPH0643824B2 JPH0643824B2 (en) | 1994-06-08 |
Family
ID=14362622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61103767A Expired - Lifetime JPH0643824B2 (en) | 1986-05-08 | 1986-05-08 | Method and device for starting diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0643824B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141476U (en) * | 1984-02-29 | 1985-09-19 | 三菱重工業株式会社 | engine air starting device |
-
1986
- 1986-05-08 JP JP61103767A patent/JPH0643824B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141476U (en) * | 1984-02-29 | 1985-09-19 | 三菱重工業株式会社 | engine air starting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0643824B2 (en) | 1994-06-08 |
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