JPS6040826Y2 - Diesel engine lubricating oil temperature and cooling water temperature adjustment device - Google Patents
Diesel engine lubricating oil temperature and cooling water temperature adjustment deviceInfo
- Publication number
- JPS6040826Y2 JPS6040826Y2 JP4118183U JP4118183U JPS6040826Y2 JP S6040826 Y2 JPS6040826 Y2 JP S6040826Y2 JP 4118183 U JP4118183 U JP 4118183U JP 4118183 U JP4118183 U JP 4118183U JP S6040826 Y2 JPS6040826 Y2 JP S6040826Y2
- Authority
- JP
- Japan
- Prior art keywords
- diesel engine
- control valve
- temperature control
- pipe
- temperature
- 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
Description
【考案の詳細な説明】
本考案はジーゼルエンジンの低負荷運転時にシリンダ、
ピストン等が過冷状態になるのを防ぐために使用される
、ジーゼルエンジンの潤滑油温度および冷却水温度の調
節装置に関する。[Detailed explanation of the invention] This invention is designed to prevent the cylinder from being
The present invention relates to a lubricating oil temperature and cooling water temperature adjusting device for a diesel engine, which is used to prevent pistons and the like from becoming overcooled.
従来ジーゼルエンジンの潤滑油および冷却水はジーゼル
エンジンから自動温度調節弁を経由して熱交換器に至り
、ここで冷却されて再びジーゼルエンジンに帰るという
循環をなし、その温度は自動温度調節弁により所定の温
度を保つよう調節されている。Conventionally, the lubricating oil and cooling water of a diesel engine travels from the diesel engine through an automatic temperature control valve to a heat exchanger, where it is cooled and returns to the diesel engine again.The temperature is controlled by the automatic temperature control valve. It is regulated to maintain a predetermined temperature.
しかしジーゼルエンジンの負荷が低下する時は燃焼室の
熱発生量が減少するため軸受部、燃焼室壁、シリンダ壁
、ピストン等の温度が最適値より大巾に減少していわゆ
る過冷状態になる。However, when the load of a diesel engine decreases, the amount of heat generated in the combustion chamber decreases, so the temperature of the bearing, combustion chamber wall, cylinder wall, piston, etc. decreases significantly from the optimum value, resulting in a so-called supercooled state. .
このような過冷状態では軸受部の抵抗が増加するので機
械効率が低下し、その上燃焼消費率が高くなる等の不都
合な事態が発生する。In such an overcooled state, the resistance of the bearing portion increases, resulting in a decrease in mechanical efficiency and, in addition, disadvantageous situations such as an increase in combustion consumption rate occur.
この点は、負荷の大小のみならず、外気温度等の影響も
関係する。This point is related not only to the magnitude of the load but also to the influence of outside air temperature, etc.
本考案は前記の事情に鑑みてなされたもので、その目的
はジーゼルエンジンが適冷状態になるのを防止するため
に使用されるジーゼルエンジンの潤滑油温度および冷却
水温度の調節装置を提供することである。The present invention has been made in view of the above circumstances, and its purpose is to provide a device for adjusting the lubricating oil temperature and cooling water temperature of a diesel engine, which is used to prevent the diesel engine from becoming properly cooled. That's true.
本考案の要旨はジーゼルエンジンの燃料加減軸により、
切替弁とシリンダを介して制御される自動温度調節弁に
、ジーゼルエンジンから排出された被冷却液（潤滑油、
冷却水）の一部流して熱交換器の通過量を自動調節自在
となし、被冷却液の残る一部を上記熱交換器を通さずに
ジーゼルエンジンに戻して被冷却液の総流量を変えずに
温度のみを制御するように構成され、かつジーゼルエン
ジンの負荷が低いときは、潤滑油用および冷却水自動温
度調節弁の温度設定値が高温側にあり、またジーゼルエ
ンジンの負荷が高いときは前記自動温度調節弁の温度設
定値が低温側にあるように構成されたジーゼルエンジン
の潤滑油温度および冷却水温度の調節装置に存する。The gist of this invention is that the fuel adjustment axis of the diesel engine
The cooled liquid (lubricating oil,
A part of the coolant (cooling water) is passed through the heat exchanger so that the amount passing through the heat exchanger can be automatically adjusted, and the remaining part of the coolant is returned to the diesel engine without passing through the heat exchanger to change the total flow rate of the coolant. If the diesel engine is configured to control only the temperature and the diesel engine load is low, the temperature settings of the lubricating oil and cooling water automatic temperature control valves are on the high temperature side, and when the diesel engine load is high. The present invention relates to a lubricating oil temperature and cooling water temperature adjusting device for a diesel engine configured such that the temperature setting value of the automatic temperature control valve is on the low temperature side.
次に本考案の実施例につき図面を参照して説明する。Next, embodiments of the present invention will be described with reference to the drawings.
第１図に於てジーゼルエンジン１の燃料ポンプ吐出量を
制御する燃料加減軸２に操作空気切替弁３が連結され、
空気源４からの圧力は燃料加減軸２の変位に応じて複数
段に切替えられる。In FIG. 1, an operating air switching valve 3 is connected to a fuel adjustment shaft 2 that controls the fuel pump discharge amount of a diesel engine 1.
The pressure from the air source 4 is switched in multiple stages according to the displacement of the fuel adjustment shaft 2.
操作空気切替弁３で切替えられた空気圧はパイプ５を経
由して制御部としてのエアシリンダ６に伝えられこのシ
リンダ６のピストン７により潤滑油や冷却水用の自動温
度調節弁８が制御される。The air pressure switched by the operating air switching valve 3 is transmitted to an air cylinder 6 as a control unit via a pipe 5, and the piston 7 of this cylinder 6 controls an automatic temperature control valve 8 for lubricating oil and cooling water. .
ジーゼルエンジン１の排出パイプＡを流れてきた被冷却
液（潤滑油または冷却水）の一部は、排出パイプＡから
分岐された冷却用パイプＢを経て熱交換器９に入り、こ
こで冷却された後、自動温度調節弁８にその入口端８ａ
から入り、出口端８ｃから出てこれとジーゼルエンジン
１とを連絡している供給パイプＤを流れ、ジーゼルエン
ジン１に供給される。A part of the cooled liquid (lubricating oil or cooling water) that has flowed through the exhaust pipe A of the diesel engine 1 passes through the cooling pipe B branched from the exhaust pipe A, enters the heat exchanger 9, and is cooled there. After that, connect the automatic temperature control valve 8 to its inlet end 8a.
It enters from the outlet end 8c, exits from the outlet end 8c, flows through the supply pipe D connecting this and the diesel engine 1, and is supplied to the diesel engine 1.
被冷却液の残る一部は、排出パイプＡから分岐されたバ
イパスパイプＣを経て自動温度調節弁８に他の入口端８
ｂから入り、熱交換器９で冷却されることなく出口端８
ｃから出て供給パイプＤに入り、熱交換器９で冷却され
た前記冷却液トー緒にジーゼルエンジン１に供給される
。The remaining part of the liquid to be cooled passes through a bypass pipe C branched from the discharge pipe A and is transferred to the automatic temperature control valve 8 at the other inlet end 8.
b and exit end 8 without being cooled by heat exchanger 9.
C, enters the supply pipe D, and is supplied to the diesel engine 1 together with the coolant cooled by the heat exchanger 9.
ここで、自動温度調節弁８は、ジーゼルエンジン１に燃
料が多く供給されているときはその温度設定値が低温側
にあって（つまり開度が大）、多量の被冷却液を熱交換
器９に流し、また、燃料が少なく供給されているときは
温度設定値が高温側にあって（開度中）、ゼロ或いは少
量の被冷却液を熱交換器９に流す構成となっている。Here, when a large amount of fuel is supplied to the diesel engine 1, the temperature setting value of the automatic temperature control valve 8 is on the low temperature side (that is, the opening degree is large), and a large amount of liquid to be cooled is transferred to the heat exchanger. Furthermore, when a small amount of fuel is being supplied, the temperature setting value is on the high temperature side (during the opening degree), and zero or a small amount of the liquid to be cooled is allowed to flow to the heat exchanger 9.
すなわち、自動温度調節弁８はその弁の開度により、熱
交換器９で冷却されるべき潤滑油または冷却水の量を決
め、これによって潤滑油または冷却水の温度を一定に保
持する。That is, the automatic temperature control valve 8 determines the amount of lubricating oil or cooling water to be cooled by the heat exchanger 9 depending on the opening degree of the valve, thereby maintaining the temperature of the lubricating oil or cooling water constant.
１０はバネである。ところでジーゼルエンジンの負荷の
減少に対応して自動温度調節弁の温度設定値を連続的に
上げるのが最も好ましいが、設備費等を考慮すると、或
負荷率を境にしてその上下で自動温度調節弁の温度設定
値を段階的に変更することによっても殆んどの場合その
目的は遠戚される。10 is a spring. By the way, it is most preferable to continuously increase the temperature setting value of the automatic temperature control valve in response to a decrease in the load of the diesel engine, but considering equipment costs etc., it is not possible to automatically adjust the temperature above and below a certain load rate. In most cases, that purpose is also distantly related by changing the temperature set point of the valve in steps.
ジーゼルエンジンの負荷が所定の値、例えば５０％にな
ったとき切替弁３が切替りエアシリンダ６のピストン７
が上端または下端に移動し、これにより自動温度調節弁
８の温度設定値が大巾に変更される。When the load of the diesel engine reaches a predetermined value, for example 50%, the switching valve 3 switches the piston 7 of the air cylinder 6.
moves to the upper end or lower end, thereby drastically changing the temperature setting value of the automatic temperature control valve 8.
このような装置に於て切替付近の負荷率でジーゼルエン
ジンを運転するときにひんばんに切替が行なわれるのを
防ぐため、第２図に示すようなガタのある切替動作を行
なわせるよう装置を構成するのが好ましい。In order to prevent such devices from switching frequently when operating a diesel engine at a load factor close to switching, the device is designed to perform switching operations with a looseness as shown in Figure 2. It is preferable to configure.
ガタのある切替動作を行なわせるためには例えば燃料加
減軸２が操作空気切替弁３に係合して弁の切替を行うと
き、係合部分に遊びがあるように作れば良い。In order to perform a switching operation with play, for example, when the fuel adjusting shaft 2 engages with the operating air switching valve 3 to switch the valve, it is sufficient to create a play in the engaged portion.
以上詳しい説明から明らかなように本考案はジーゼルエ
ンジンの燃料加減軸に連結されこの燃料加減軸の動きに
よって圧力調節が行われる切替弁と、この切替弁の流出
側のパイプに接続されたシリンダと、このシリンダに送
られてきた圧力流体によって作動するピストンにより開
度を調節される被冷却液の自動温度調節弁と、ジーゼル
エンジンの被冷却液の排出パイプと、この排出パイプか
ら分岐され排出パイプを流れてきた前記被冷却液の一部
を前記自動温度調節弁に流す冷却用パイプと、この冷却
用パイプに組み込まれた熱交換器と、前記自動温度調節
弁の出口端とジーゼルエンジンとを連絡し自動温度調節
弁に送り込まれた被冷却液をジーゼルエンジンに供給す
る供給パイプと、前記排出パイプから分岐され排出パイ
プを流れてきた被冷却液の残る一部を前記熱交換器に通
さすに前記供給パイプに流すバイパスパイプとを有し、
ジーゼルエンジンに燃料が多く供給されているときは前
記自動温度調節弁の設定値が低温側にあり、また、燃料
が少なく供給されているときは前記自動温度調節弁の温
度設定値が高温側にあるように構成されてなるものであ
るから、低負荷運転時におけるジーゼルエンジンの過冷
を防ぐことができ、したがって、過冷に起因する機械効
率の低下と燃料消費率の増大、及びバンチングを防止し
て経済的に低負荷運転をすることができる。As is clear from the detailed explanation above, the present invention consists of a switching valve that is connected to the fuel adjustment shaft of a diesel engine and whose pressure is adjusted by the movement of the fuel adjustment shaft, and a cylinder that is connected to a pipe on the outflow side of this switching valve. , an automatic temperature control valve for the cooled liquid whose opening degree is adjusted by a piston operated by the pressure fluid sent to this cylinder, a discharge pipe for the cooled liquid of the diesel engine, and a discharge pipe branched from this discharge pipe. a cooling pipe that allows a part of the liquid to be cooled flowing through the automatic temperature control valve to flow, a heat exchanger built into the cooling pipe, and an outlet end of the automatic temperature control valve and the diesel engine. A supply pipe that connects and supplies the cooled liquid sent to the automatic temperature control valve to the diesel engine, and a remaining part of the cooled liquid that is branched from the discharge pipe and flows through the discharge pipe is passed through the heat exchanger. and a bypass pipe that flows into the supply pipe,
When a large amount of fuel is supplied to the diesel engine, the set value of the automatic temperature control valve is on the low temperature side, and when less fuel is supplied, the temperature set value of the automatic temperature control valve is on the high temperature side. This structure prevents overcooling of the diesel engine during low-load operation, thereby preventing a decrease in mechanical efficiency, an increase in fuel consumption rate, and bunching caused by overcooling. This enables economical low-load operation.
また、被冷却液の温度調節は、ジーゼルエンジンに対す
る被冷却液の総流量を変えずに、熱交換器への流量を変
えて行うものであるから、容量の小さい熱交換器９で効
率よく正確かつ容易に温度制御をなすことができる。Furthermore, since the temperature of the cooled liquid is adjusted by changing the flow rate to the heat exchanger without changing the total flow rate of the cooled liquid to the diesel engine, the heat exchanger 9 with a small capacity can be used efficiently and accurately. Moreover, the temperature can be easily controlled.
さらにまた、ジーゼルエンジンは、当然に、常温時にの
み用いられるとは限らず、夏の高温な炎天下、或いは冬
の厳寒時においても用いられるが、本考案の潤滑油温度
および冷却水温度の調節装置は、上記のように、圧力流
体をパイプでシリンダに送って自動温度調節弁を作動さ
せる構成となっているので、圧力流体の元圧等をその時
の気温条件に合わせて手動で切り替えて自動調節のペー
スを変え、以後、そのペースのもとに最良の状態で潤滑
油温度および冷却水温度を自動調節することができ、ま
た自動調節のペースの切替えもきわめて容易であり、し
かもジーゼルエンジンヲ停止させることなく運転中に調
整をなすことができる。Furthermore, diesel engines are of course not only used at normal temperatures, but also in the hot summer sun or in the bitter cold of winter, but the lubricating oil temperature and cooling water temperature adjustment device of the present invention As mentioned above, the system is configured to send pressure fluid to the cylinder via a pipe to operate the automatic temperature control valve, so the source pressure of the pressure fluid can be manually switched to match the temperature conditions at that time to automatically adjust it. The lubricating oil temperature and cooling water temperature can then be automatically adjusted in the best conditions based on that pace. It is also extremely easy to change the automatic adjustment pace, and it is also possible to stop the diesel engine. Adjustments can be made during operation without having to
その上、切替え付近の負荷率におけるひんばんな切替え
作動を防止することもきわめて容易で、総合的に構造が
簡単で扱いやすい長所がある。Furthermore, it is extremely easy to prevent frequent switching operations at load factors near switching, and the structure has the overall advantage of being simple and easy to handle.
第１図は本考案調節装置の実施例、第２図は負荷率と操
作空気圧の関係を示す図である。
１・・・・・・ジーゼルエンジン、２・・・・・・燃料
加減軸、３・・・・・・操作空気切替弁、５・・・・・
・パイプ、６・・・・・・エアシリンダ、７・・・・・
ゼストン、８・・・・・・自動温度調節弁、９・・・・
・・熱交換器。FIG. 1 is an embodiment of the adjusting device of the present invention, and FIG. 2 is a diagram showing the relationship between load factor and operating air pressure. 1...Diesel engine, 2...Fuel adjustment shaft, 3...Operation air switching valve, 5...
・Pipe, 6... Air cylinder, 7...
Zeston, 8...Automatic temperature control valve, 9...
··Heat exchanger.
Claims (1)
加減軸２の動きによって圧力調節が行われる切替弁３と
、この切替弁３の流出側のパイプ５に接続されたシリン
ダ６と、このシリンダ６に送られてきた圧力流体によっ
て作動するピストン７により開度を調整される被冷却液
の自動温度調節弁８と、ジーゼルエンジン１の被冷却液
の排出パイプＡと、この排出パイプＡから分岐され排出
パイプＡを流れてきた前記被冷却液の一部を前記自動温
度調節弁８に流す冷却用パイプＢと、この冷却用パイプ
Ｂに組み込まれた熱交換器９と、前記自動温度調節弁８
の出口端８ｃとジーゼルエンジン１とを連絡し自動温度
調節弁８に送り込まれた被冷却液をジーゼルエンジン１
に供給する供給パイプＤと、前記排出パイプＡから分岐
され排出パイプＡを流れてきた被冷却液の残る一部を前
記熱交換器９に通さずに前記供給パイプＤに流すバイパ
スパイプＣとを有し、ジーゼルエンジン１に燃料が多く
供給されているときは前記自動温度調節弁８の設定値側
にあり、また、燃料が少なく供給されているときは前記
自動温度調節弁８の温度設定値が高温側にあるように構
成されてなることを特徴とするジーゼルエンジンの潤滑
油温度および冷却水温度の調節装置。A switching valve 3 that is connected to a fuel adjustment shaft 2 of a diesel engine 1 and whose pressure is adjusted by the movement of this fuel adjustment shaft 2, a cylinder 6 that is connected to a pipe 5 on the outflow side of this switching valve 3, and this cylinder 6. an automatic temperature control valve 8 for the cooled liquid whose opening degree is adjusted by a piston 7 operated by the pressure fluid sent to the diesel engine 1; a discharge pipe A for the cooled liquid of the diesel engine 1; A cooling pipe B that allows a part of the liquid to be cooled that has flowed through the discharge pipe A to flow to the automatic temperature control valve 8, a heat exchanger 9 built into this cooling pipe B, and the automatic temperature control valve 8.
The outlet end 8c of the diesel engine 1 is connected to the diesel engine 1, and the cooled liquid sent to the automatic temperature control valve 8 is connected to the diesel engine 1.
and a bypass pipe C that branches from the discharge pipe A and allows the remaining part of the liquid to be cooled that has flowed through the discharge pipe A to flow to the supply pipe D without passing through the heat exchanger 9. When a large amount of fuel is supplied to the diesel engine 1, the temperature is on the set value side of the automatic temperature control valve 8, and when less fuel is supplied, the temperature set value of the automatic temperature control valve 8 is on the side. 1. A device for adjusting lubricating oil temperature and cooling water temperature for a diesel engine, characterized in that the temperature is on the high temperature side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4118183U JPS6040826Y2 (en) | 1983-03-22 | 1983-03-22 | Diesel engine lubricating oil temperature and cooling water temperature adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4118183U JPS6040826Y2 (en) | 1983-03-22 | 1983-03-22 | Diesel engine lubricating oil temperature and cooling water temperature adjustment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5988205U JPS5988205U (en) | 1984-06-14 |
| JPS6040826Y2 true JPS6040826Y2 (en) | 1985-12-10 |
Family
ID=30171775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4118183U Expired JPS6040826Y2 (en) | 1983-03-22 | 1983-03-22 | Diesel engine lubricating oil temperature and cooling water temperature adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6040826Y2 (en) |
-
1983
- 1983-03-22 JP JP4118183U patent/JPS6040826Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5988205U (en) | 1984-06-14 |
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