JPH0219558Y2 - - Google Patents
Info
- Publication number
- JPH0219558Y2 JPH0219558Y2 JP6651583U JP6651583U JPH0219558Y2 JP H0219558 Y2 JPH0219558 Y2 JP H0219558Y2 JP 6651583 U JP6651583 U JP 6651583U JP 6651583 U JP6651583 U JP 6651583U JP H0219558 Y2 JPH0219558 Y2 JP H0219558Y2
- Authority
- JP
- Japan
- Prior art keywords
- speed
- engine
- starting
- low
- idling
- 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
- 239000010687 lubricating oil Substances 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
Landscapes
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Description
【考案の詳細な説明】
本考案は、例えば予備電源用の発電機を駆動す
るエンジンのように、比較的長期間にわたつて運
転を休止し、必要なときには、始動開始後急に回
転数を定格回転数まで上昇させられるようなエン
ジンの始動制御装置に関する。[Detailed description of the invention] This invention is designed to stop operation for a relatively long period of time, such as an engine that drives a generator for backup power supply, and then suddenly increase the rotation speed after starting when necessary. The present invention relates to an engine starting control device that can increase the engine speed to a rated speed.
従来、このようなエンジンは、第１図の１点鎖
線ａで示すように、始動準備期間t1を経過してエ
ンジンが回転し始めるとできるだけ迅速に定格回
転数まで立上らせ、定格回転数に達した後のt2の
時点で負荷を投入される。ところが、長時間停止
させられている間にエンジン各部で潤滑油がいわ
ゆるオイル下りによつて油切れしていたり、潤滑
油の粘度が高くなつて循環しにくくなつたりする
ので、このような急始動をするとエンジン各部の
潤滑が十分に行なわれず、摩耗が生じ易くなるな
ど、耐久性を損ねる欠点がある。極端な場合には
エンジンが焼け付くおそれさえある。 Conventionally, as shown by the dashed line a in FIG . The load is applied at time t 2 after the number is reached. However, while the engine is stopped for a long time, the lubricating oil in various parts of the engine runs out due to so-called oil dripping, and the viscosity of the lubricating oil increases, making it difficult to circulate. If this happens, the various parts of the engine will not be sufficiently lubricated, which will lead to wear and tear, which will impair durability. In extreme cases, the engine may even seize up.
停電などの場合は遅滞なく発電機を始動させね
ばならず、このような緊急の場合には、上述のよ
うな急始動が必要であるが、定期点検の際のエン
ジン始動の場合などには、このような急始動をす
る必要がなく、むしろ上述のような不都合を避け
るために始動後にエンジンの各部に十分な潤滑油
が行きわたるまでは、低速で運転することが望ま
れる。 In the event of a power outage, the generator must be started without delay, and in such emergencies, a sudden start as described above is required, but when starting the engine during periodic inspections, etc. There is no need for such a sudden start; rather, in order to avoid the above-mentioned inconvenience, it is desirable to operate at a low speed until sufficient lubricating oil is distributed to each part of the engine after starting.
本考案は、このような要請に応えることを目的
とするもので、エンジンの回転速度を定格回転数
に調速するガバナと、このガバナでエンジンの回
転数に対応して変位駆動される速度調節要素とを
備え、始動操作開始後所定の時間にわたつて上記
速度調節要素を低速アイドリング位置に制限する
始動時増速制限手段を設けるとともに、緊急始動
時に上記始動時増速制限手段の作動を解除する制
限解除手段を設けたことを特徴とする。 The purpose of this invention is to meet these demands.The invention includes a governor that regulates the engine rotation speed to the rated rotation speed, and a speed adjustment device that is displaced and driven by this governor in accordance with the engine rotation speed. and a starting speed increase limiting means for limiting the speed adjusting element to a low-speed idling position for a predetermined period of time after the start of the starting operation, and releasing the operation of the starting speed increasing limiting means at the time of an emergency start. The present invention is characterized in that a restriction release means is provided.
以下、本考案の実施例を図面に基づき説明す
る。 Hereinafter, embodiments of the present invention will be described based on the drawings.
第２図は予備発電機用デイーゼルエンジンの電
子ガバナを概略的に示す図である。このエンジン
１は、エンジン回転数を定格回転数に調速する電
子ガバナ２を備える。この電子ガバナ２はエンジ
ンの実回転数を回転数検出回路３で検出し、演算
回路４において定格回転数と実回転数とを比較し
て定格回転数よりも実回転数が低い場合にアクチ
ユエータ５で燃料噴射量調節用ラツクよりなる速
度調節要素６をトルクスプリング７に対抗して増
速方向に駆動するように構成される。このガバナ
２の演算回路４は、エンジン１の始動操作を始め
てから所定の準備期間t1を置いた後、エンジン１
を起動させ、迅速にエンジン回転数を定格回転数
まで立上らせるプログラムを組込んだ緊急始動
ROM４１を備える。この演算回路４には、更
に、エンジン１の始動操作を始めてから所定の準
備期間t1を置いた後、エンジン１を起動させ、エ
ンジン回転数を所定の低速アイドリング速度に制
限する低速アイドリング始動ROM４２が設けら
れる。この低速アイドリング始動ROM４２は、
低速アイドリング始動選択回路８からの低速アイ
ドリング指令を入力し、かつ、自動または手動操
作による急始動指令が発せられていないときにの
み作動させられる。ちなみに、本例では、手動ま
たは自動で発せられる急始動指令を緊急始動
ROM４１に入力させ、急始動指令を入力した緊
急始動ROM４１が低速アイドリング始動ROM
４２の作動を解除するように構成されるので、緊
急始動ROM４１が緊急始動時に上記始動時増速
制限手段の作動を解除する制限解除手段を兼ねる
ことなる。上記低速アイドリング始動選択回路８
は、フオトカプラ８１と、RC回路よりなる平滑
回路８２とからなる。符号８１１はフオトカプラ
８１の発光素子、８１２はその電源回路、８１３
はフオトカプラ８１の受光素子、８１４は上記電
源回路８１２を断続するためのスイツチである。
平滑回路８２はコンデンサ８２１とその反接地側
に接続された２つの直列抵抗８２２，８２３とを
有する。上記受光素子８１３の高圧出力端は前記
タイマ回路８２１の両抵抗８２２，８２３の中間
接続点に接続される。上記コンデンサ８２１の反
接地側は、上記低速アイドリング始動ROM４２
に接続される。 FIG. 2 is a diagram schematically showing an electronic governor of a diesel engine for a standby generator. This engine 1 includes an electronic governor 2 that regulates the engine speed to a rated speed. This electronic governor 2 detects the actual rotational speed of the engine with a rotational speed detection circuit 3, compares the rated rotational speed and the actual rotational speed in an arithmetic circuit 4, and when the actual rotational speed is lower than the rated rotational speed, the actuator 5 The speed adjusting element 6, which is a rack for adjusting the fuel injection amount, is driven in the speed increasing direction against the torque spring 7. After a predetermined preparation period t1 has elapsed since starting the engine 1, the arithmetic circuit 4 of the governor 2 starts the operation of the engine 1.
An emergency start with a built-in program that starts the engine and quickly brings the engine speed up to the rated speed.
It is equipped with ROM41. This arithmetic circuit 4 further includes a low-speed idling start ROM 42 that starts the engine 1 after a predetermined preparation period t1 after starting the engine 1 starting operation and limits the engine speed to a predetermined low-speed idling speed. is provided. This low speed idling start ROM 42 is
It is activated only when a low speed idling command from the low speed idling start selection circuit 8 is input and no sudden start command is issued by automatic or manual operation. By the way, in this example, the sudden start command issued manually or automatically is
The emergency start ROM41 that inputs the sudden start command into the ROM41 is the low-speed idling start ROM.
42, the emergency start ROM 41 also functions as a limit canceling means for canceling the operation of the start-up speed increase limiting means at the time of an emergency start. The above low speed idling start selection circuit 8
consists of a photocoupler 81 and a smoothing circuit 82 consisting of an RC circuit. Reference numeral 811 indicates a light emitting element of the photocoupler 81, 812 indicates its power supply circuit, and 813
814 is a light-receiving element of the photocoupler 81, and a switch 814 for turning on and off the power supply circuit 812.
The smoothing circuit 82 includes a capacitor 821 and two series resistors 822 and 823 connected to the opposite side of the capacitor 821 to the ground. The high voltage output terminal of the light receiving element 813 is connected to the intermediate connection point between both resistors 822 and 823 of the timer circuit 821. The anti-ground side of the capacitor 821 is connected to the low speed idling start ROM 42.
connected to.
符号９は始動操作開始後所定の時間にわたつて
上記速度調節要素を低速アイドリング位置に制限
する始動時増速制限手段を示す。これは、後述の
ガバナ２の動作の説明により理解されるであろう
が、低速アイドリング始動ROM４２、低速アイ
ドリング始動選択回路８とを含んでいる。 Reference numeral 9 designates a starting speed increase limiting means for limiting the speed adjusting element to a low speed idling position for a predetermined period of time after starting the starting operation. This includes a low-speed idling start ROM 42 and a low-speed idling start selection circuit 8, as will be understood from the explanation of the operation of the governor 2, which will be described later.
符号４３は急停止ROMであり、これは、重故
障が発生した場合のように、緊急停止させるとき
に第１図の１点鎖線ｂで示すような急停止をさせ
る場合に作動させられる。また、４４は低速アイ
ドリング停止ROMであり、これは、通常のエン
ジン停止を行なうときに、第１図の実線ｄで示す
ように、エンジン停止時に定格回転数よりも低い
アイドリング回転数で所定の時間回転させるとき
に作動させられる。このようにエンジン停止の途
中で所定時間アイドル運転を行なわせると、エン
ジン内の高温箇所に潤滑油が止められることがな
く、潤滑油の劣化の進行を少なくできる。 Reference numeral 43 denotes a sudden stop ROM, which is activated when an emergency stop is to be made as shown by the dashed line b in FIG. 1, such as when a serious failure occurs. Further, 44 is a low-speed idling stop ROM, which is used for a predetermined period of time at an idling speed lower than the rated speed when the engine is stopped, as shown by the solid line d in Fig. 1, when the engine is stopped normally. Activated when rotating. By allowing the engine to idle for a predetermined period of time while the engine is stopped in this manner, the lubricating oil is not stopped at high-temperature locations within the engine, and the progress of deterioration of the lubricating oil can be reduced.
１０は停止時停速アイドリング選択回路であ
る。 Reference numeral 10 indicates a stop/idling selection circuit when the vehicle is stopped.
次に、このガバナ２の始動時の動作を説明す
る。 Next, the operation of this governor 2 at startup will be explained.
低速アイドリング選択用の選択スイツチ８１４
を閉じると、発光素子８１１が発光させられて受
光素子８１３のコレクタ電流が導通し、抵抗８２
２，８２３が接地される。これにより、低速アイ
ドリング始動ROM４２が作動し、エンジン１が
始動されてからエンジン回転数が所定の低速アイ
ドリング速度に達するまでアクチユエータ５で速
度調節要素６が燃料増量方向に駆動される。この
場合、速度調節要素６は低速アイドリング位置よ
りも増速方向へは変位しないように低速アイドリ
ング始動ROM４２で制御される。その結果、第
１図の実線ｃで示すように、エンジン回転数は低
速アイドリング回転数に制限される。コンデンサ
８２１の放電が終ると、抵速アイドリング始動
ROM４２の作動が停止させられ、エンジン１の
回転数が定格回転数に達するまで、アクチユエー
タ５で速度調節要素６を燃料増量方向に駆動され
ることになる。 Selection switch 814 for selecting low speed idling
When closed, the light emitting element 811 emits light, the collector current of the light receiving element 813 is conducted, and the resistor 82
2,823 is grounded. As a result, the low-speed idling start ROM 42 is activated, and the actuator 5 drives the speed adjustment element 6 in the direction of fuel increase after the engine 1 is started until the engine speed reaches a predetermined low-speed idling speed. In this case, the speed adjustment element 6 is controlled by the low speed idling start ROM 42 so as not to be displaced in the speed increasing direction beyond the low speed idling position. As a result, the engine speed is limited to the low-speed idling speed, as shown by the solid line c in FIG. When capacitor 821 finishes discharging, low speed idling starts.
The operation of the ROM 42 is stopped, and the actuator 5 drives the speed adjustment element 6 in the direction of fuel increase until the rotation speed of the engine 1 reaches the rated rotation speed.
停電が検知された場合のように緊急始動を必要
とする場合には、演算回路４内で急始動指令が発
せられ、緊急始動ROM４１が作動させられ、低
速アイドリング始動ROM４２の作動は緊急始動
ROM４１によつて解除される。 When an emergency start is required, such as when a power outage is detected, a sudden start command is issued in the arithmetic circuit 4, the emergency start ROM 41 is activated, and the low speed idling start ROM 42 is activated for the emergency start.
It is released by ROM41.
なお、本考案は、電子ガバナにのみ適用される
のではなく、例えば、機械式ガバナにおいて、始
動操作時にガバナレバーを低速アイドリング位置
に制限する制限具を設け、この制限具をタイマ付
きソレノイドで始動後所定時間を経過してから制
限解除位置に変位させたり、形状記憶合金で始動
後エンジン温度が一定以上になつたときにその制
限具を制限解除位置に変位させたりするなど、機
械的に上述のような始動特性を与えることも可能
である。 Note that the present invention is not only applicable to electronic governors; for example, in mechanical governors, a limiter is provided to limit the governor lever to the low-speed idling position during starting operation, and this limiter is applied to a solenoid with a timer after starting. Mechanically, such as displacing the restrictor to the restriction release position after a predetermined period of time has elapsed, or displacing the restrictor to the restriction release position when the engine temperature reaches a certain level after starting with a shape memory alloy, etc. It is also possible to provide such starting characteristics.
本考案は、以上説明したように、始動後所定の
期間にわたつてエンジン回転数を低速アイドリン
グ回転数に制限する始動制御手段を設け、緊急時
以外は始動後所定の期間にわたつてエンジン回転
数を低速アイドリング回転数に制限するので、長
時間停止後の潤滑不足や潤滑油の高粘度をその低
速アイドリング期間中に解消してからエンジン回
転数を定格回転数に立上らせることができ、エン
ジンの異常摩耗を減少させ、耐久性を著しく向上
できる。また、緊急始動時に上記始動時増速制限
手段の作動を解除する制限解除手段を設けるの
で、緊急時には、始動時増速制限手段に妨げられ
ることなく急始動を行うことができる。 As explained above, the present invention is provided with a start control means that limits the engine speed to a low idling speed for a predetermined period after starting, and except in an emergency, the engine speed is limited for a predetermined period after starting. Since the engine speed is limited to low-speed idling speed, the engine speed can be raised to the rated speed after the lack of lubrication and high viscosity of lubricating oil after long periods of stopping are resolved during the low-speed idling period. Abnormal engine wear can be reduced and durability can be significantly improved. In addition, since a restriction release means is provided for canceling the operation of the speed increase limiting means during start-up during an emergency start, a sudden start can be performed in an emergency without being hindered by the speed increase limiting means during start-up.
第１図は従来よりの急始動と本考案により実現
される低速アイドリング始動との始動特性を比較
して示したグラフ、第２図は本考案に係るエンジ
ンの電子ガバナの概略構成図である。
１……エンジン、２……ガバナ、６……速度調
節要素、９……始動時増速制限手段、４１……制
限解除手段。
FIG. 1 is a graph comparing the starting characteristics of a conventional sudden start and a low-speed idling start realized by the present invention, and FIG. 2 is a schematic diagram of an electronic governor for an engine according to the present invention. DESCRIPTION OF SYMBOLS 1...Engine, 2...Governor, 6...Speed adjustment element, 9...Speed increase limiting means at startup, 41...Limiting release means.
Claims (1)
ガバナ２と、このガバナ２でエンジンの回転数に
対応して変位駆動される速度調節要素６とを備
え、始動操作開始後所定の時間にわたつて上記速
度調節要素６を低速アイドリング位置に制限する
始動時増速制限手段９を設けるとともに、緊急始
動時に上記始動時増速制限手段９の作動を解除す
る制限解除手段４１を設けたことを特徴とする、
エンジンの始動制御装置。 It includes a governor 2 that regulates the rotational speed of the engine 1 to a rated rotational speed, and a speed adjustment element 6 that is displaced and driven by the governor 2 in accordance with the engine rotational speed. The invention is characterized in that a starting speed increase limiting means 9 for limiting the speed adjusting element 6 to a low speed idling position is provided, and a limit release means 41 is provided for canceling the operation of the starting speed increasing limiting means 9 at the time of an emergency start. and
Engine starting control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6651583U JPS59172245U (en) | 1983-05-02 | 1983-05-02 | Engine starting control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6651583U JPS59172245U (en) | 1983-05-02 | 1983-05-02 | Engine starting control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59172245U JPS59172245U (en) | 1984-11-17 |
| JPH0219558Y2 true JPH0219558Y2 (en) | 1990-05-30 |
Family
ID=30196724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6651583U Granted JPS59172245U (en) | 1983-05-02 | 1983-05-02 | Engine starting control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59172245U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4544762B2 (en) * | 2001-02-27 | 2010-09-15 | 三菱重工業株式会社 | Starting method and starting apparatus for diesel engine |
-
1983
- 1983-05-02 JP JP6651583U patent/JPS59172245U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59172245U (en) | 1984-11-17 |
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