JPH0310343Y2 - - Google Patents
Info
- Publication number
- JPH0310343Y2 JPH0310343Y2 JP10862183U JP10862183U JPH0310343Y2 JP H0310343 Y2 JPH0310343 Y2 JP H0310343Y2 JP 10862183 U JP10862183 U JP 10862183U JP 10862183 U JP10862183 U JP 10862183U JP H0310343 Y2 JPH0310343 Y2 JP H0310343Y2
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- cooler
- temperature
- air cooler
- stage air
- 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
- 239000000498 cooling water Substances 0.000 claims description 40
- 239000013505 freshwater Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Supercharger (AREA)
Description
【考案の詳細な説明】
イ 考案の分野
この考案は空気冷却器付デイーゼル機関におけ
る給気温度の調節装置の改良に関する。[Detailed description of the invention] A. Field of the invention This invention relates to an improvement of a supply air temperature regulating device in a diesel engine with an air cooler.
ロ 従来技術
従来この種機関においては、高負荷域で給気温
度の設定値を満足させると負荷の減少とともに給
気温度が低下し、殊に低負荷域では過給機出口の
給気温度（つまり空気冷却器入口の給気温度）が
設定値まで上昇せず、たとえ空気冷却器への冷却
水の供給を止めても、機関給気温度のアツプは望
めなかつた（第３図参照）。このため燃焼不良お
よびシリンダライナ、ピストンリングの異常摩耗
等の弊害が生じる。したがつて、低負荷域での給
気温度アツプが望まれる。とりわけ低質油燃料を
低負荷で使用する場合は、高負荷域での設定温度
（40℃〜50℃）より高く（60℃〜70℃）する必要
がある。B. Prior Art Conventionally, in this type of engine, when the set value of the supply air temperature is satisfied in the high load range, the supply air temperature decreases as the load decreases, and especially in the low load range, the supply air temperature at the outlet of the supercharger ( In other words, the supply air temperature at the air cooler inlet) did not rise to the set value, and even if the supply of cooling water to the air cooler was stopped, the engine supply air temperature could not be expected to rise (see Figure 3). This causes problems such as poor combustion and abnormal wear of cylinder liners and piston rings. Therefore, it is desirable to increase the supply air temperature in the low load range. Especially when using low-quality oil fuel at low loads, it is necessary to set the temperature higher (60°C to 70°C) than the set temperature in the high load range (40°C to 50°C).
従来技術として実公昭58−13075号公報に記載
の装置がある。この従来の装置では、空気冷却器
の空気の下流側に海水を通している。しかし、低
負荷時に海水をバイパスさせた場合、空気温度を
50℃以上に上げると空気冷却器内の海水冷却管内
に塩が固着する。それゆえ、空気温度を50℃以上
に上げることはできない。また、このため空気冷
却器の上流側を通すジヤケツト系冷却水の温度も
50℃〜55℃にしかなせず、ジヤケツト系冷却水に
要求されるジヤケツト出口において75℃〜85℃の
高温冷却水を確保することができないといつた欠
点を温存している。 As a prior art, there is a device described in Japanese Utility Model Publication No. 58-13075. In this conventional device, seawater is passed downstream of the air in the air cooler. However, if seawater is bypassed during low load, the air temperature will decrease.
If the temperature rises above 50℃, salt will stick to the seawater cooling pipe in the air cooler. Therefore, the air temperature cannot be raised above 50°C. In addition, the temperature of the jacket cooling water passing through the upstream side of the air cooler also decreases.
However, it still has the drawback that it is unable to secure high-temperature cooling water of 75°C to 85°C at the jacket outlet, which is required for jacket-based cooling water.
ハ 考案の目的
この考案は低負荷域における給気温度のアツプ
という要求に応え得、しかも上に述べたごとき従
来装置の欠点を解消し得る改良したデイーゼル機
関の給気温度調節装置を提供せんとするものであ
る。C. Purpose of the invention The purpose of this invention is to provide an improved supply air temperature control device for diesel engines that can meet the demand for increased supply air temperature in the low load range and eliminate the drawbacks of the conventional devices as described above. It is something to do.
ニ 考案の構成
この考案のデイーゼル機関の給気温度調節装置
は、過給機２の下流側に位置し、低温冷却水の循
環するクーラ系冷却水回路６〜１３に接続した第
１段空気冷却機４と、この第１段空気冷却器の下
流側に位置し、清水冷却器１６を備えたジヤケツ
ト系冷却水回路１４〜２７に接続した第２段空気
冷却器５と、ジヤケツト系冷却水回路中にあつ
て、負荷域に応じて作動する切替弁１８とを包含
する。D. Structure of the invention The diesel engine supply air temperature control device of this invention is located downstream of the supercharger 2 and connects to the cooler system cooling water circuits 6 to 13 in which low-temperature cooling water circulates. 4, a second stage air cooler 5 located downstream of this first stage air cooler and connected to jacket system cooling water circuits 14 to 27 equipped with a fresh water cooler 16, and a jacket system cooling water circuit. It includes a switching valve 18 that operates depending on the load range.
ホ 考案の作用
この考案のデイーゼル機関の給気温度調節装置
は、機関の高負荷運転時には清水冷却器１６で冷
却されたジヤケツト系冷却水を第２段空気冷却器
５に供給することにより40℃〜50℃の給気温度を
得、一方低負荷運転に入るや切替弁１８が作動し
て、機関１を出た高温のジヤケツト系冷却水をそ
のまま第２段空気冷却器へ供給することにより60
℃〜70℃の給気温度を得るといつた具合に作用す
る。E. Effect of the invention The supply air temperature control device for a diesel engine of this invention supplies jacket cooling water cooled by the fresh water cooler 16 to the second stage air cooler 5 during high load operation of the engine, thereby increasing the temperature to 40°C. By obtaining a supply air temperature of ~50°C, and on the other hand, entering low-load operation, the switching valve 18 is activated and the high-temperature jacket cooling water exiting the engine 1 is directly supplied to the second stage air cooler.
It works just fine when you get the supply air temperature between ℃ and 70℃.
ヘ 実施例
この考案の特徴は図面に示す実施例につき下記
するところから一層明瞭になろう。F. Embodiments The features of this invention will become clearer from the following description of embodiments shown in the drawings.
図面を参照すると、デイーゼル機関１は過給機
２を備えており、過給機２で圧縮された空気は給
気管３ならびにその途中に配設した２段の空気冷
却器４，５を通つてデイーゼル機関１へ供給され
る。 Referring to the drawing, a diesel engine 1 is equipped with a supercharger 2, and air compressed by the supercharger 2 passes through an air supply pipe 3 and two-stage air coolers 4 and 5 disposed in the middle. It is supplied to the diesel engine 1.
第１段空気冷却器４は過給機２の下流側に位置
し、クーラ系冷却水回路に接続する。クーラ系冷
却水回路は冷却水源から冷却水ポンプ６、第１段
空気冷却器４、流量調節弁７、および設定値30℃
の温度調節弁８を経て冷却水ポンプ６もしくは冷
却水源へ環る管路９〜１３を含む。 The first stage air cooler 4 is located downstream of the supercharger 2 and is connected to the cooler system cooling water circuit. The cooler system cooling water circuit runs from the cooling water source to the cooling water pump 6, the first stage air cooler 4, the flow control valve 7, and the set value of 30°C.
It includes pipe lines 9 to 13 that connect to a cooling water pump 6 or a cooling water source via a temperature control valve 8.
第１段空気冷却器４の下流側に位置する第２段
空気冷却器５はジヤケツト系冷却水回路に接続す
る。ジヤケツト系冷却水回路は冷却水ポンプ１４
からデイーゼル機関１の冷却ジヤケツトを通り設
定値75℃の温度調節弁１５、清水冷却器１６、設
定値38℃の温度調節弁１７、切替弁１８、および
第２段空気冷却器５を経て冷却水ポンプ１４へ環
る管路１９〜２７を含む。なお、２８，２９は清
水冷却器１６に冷却用海水を供給する管路であ
る。 A second stage air cooler 5 located downstream of the first stage air cooler 4 is connected to the jacket system cooling water circuit. The jacket system cooling water circuit is the cooling water pump 14.
From there, the cooling water passes through the cooling jacket of the diesel engine 1, passes through the temperature control valve 15 with a set value of 75°C, the fresh water cooler 16, the temperature control valve 17 with a set value of 38°C, the switching valve 18, and the second stage air cooler 5. Contains lines 19-27 leading to pump 14. Note that 28 and 29 are pipes that supply cooling seawater to the fresh water cooler 16.
かかる構成からなるこの実施例装置の作用につ
き述べると次のとおりである。 The operation of this embodiment of the apparatus having such a configuration will be described as follows.
第１図は機関の高負荷運転時の装置の状態を示
している。この場合、機関１の冷却ジヤケツト内
を流過して加熱された冷却水は、機関出口におけ
る冷却水温が75℃〜80℃になるように、温度調節
弁１５にて、清水冷却器１６を介して第２段空気
冷却器５へ至るものと、管路２１，２２を通つて
直接冷却水ポンプ１４へ環るものとに分流せしめ
られる。高負荷時は機関１の発生熱量が多いた
め、冷却水はそのほとんどが、清水冷却器１６を
通つて概ね38℃に冷却された上で、第２段空気冷
却器５へ進むことになる。 FIG. 1 shows the state of the device during high load operation of the engine. In this case, the cooling water that has passed through the cooling jacket of the engine 1 and is heated is passed through the fresh water cooler 16 by the temperature control valve 15 so that the cooling water temperature at the engine outlet is 75°C to 80°C. The water is divided into two parts: one that goes to the second stage air cooler 5, and the other that goes directly to the cooling water pump 14 through pipes 21 and 22. Since the engine 1 generates a large amount of heat under high load, most of the cooling water passes through the fresh water cooler 16 and is cooled to approximately 38° C. before proceeding to the second stage air cooler 5.
クーラ系冷却水は、冷却水ポンプ６から第１段
空気冷却器４へと進むが、温度調節弁８により30
℃〜35℃に調温される。 Cooler system cooling water flows from the cooling water pump 6 to the first stage air cooler 4, but the temperature control valve 8
The temperature is controlled between ℃ and 35℃.
かくして、高負荷域においては、過給機２から
の空気は第１段および第２段の空気冷却器４，５
により、40℃〜50℃に冷却される。なお、空気冷
却器出口の空気温度は流量調節弁７により第１段
空気冷却器４へ供給する冷却水量を加減すること
によつて調整することができる。 Thus, in the high load range, the air from the supercharger 2 is transferred to the first and second stage air coolers 4, 5.
It is cooled to 40°C to 50°C. Note that the air temperature at the outlet of the air cooler can be adjusted by adjusting the amount of cooling water supplied to the first stage air cooler 4 using the flow control valve 7.
つぎに機関の低負荷運転時における装置の状態
を示す第２図を参照すると、この場合、図示のご
とく切替弁１８が作動して管路２１を管路２５
と、また管路２４を管路２２と連結せしめる。な
お、切替弁１８の作動は、ラツク発信器または操
縦ハンドル位置（いずれも図示せず）に関連する
信号に基づいて、電気的に制御される。しかし
て、第２段空気冷却器５へは機関１から出てきた
75℃〜80℃の高温冷却水が供給される。したがつ
て、過給機２からの空気は、前述のクーラ系冷却
水の温度30℃〜35℃よりも低温のときにまず第１
段空気冷却器４にて加温された上さらに、第２段
空気冷却器５で60℃〜70℃まで加熱されることに
なる。 Next, referring to FIG. 2, which shows the state of the device during low-load operation of the engine, in this case, the switching valve 18 operates as shown in the figure to connect the pipe 21 to the pipe 25.
Then, the conduit 24 is also connected to the conduit 22. Note that the operation of the switching valve 18 is electrically controlled based on a signal related to a rack transmitter or a steering wheel position (none of which are shown). Therefore, the air coming out from engine 1 to the second stage air cooler 5
High temperature cooling water of 75℃~80℃ is supplied. Therefore, when the air from the supercharger 2 is lower than the above-mentioned temperature of the cooler system cooling water of 30°C to 35°C,
After being heated by the stage air cooler 4, it is further heated to 60°C to 70°C by the second stage air cooler 5.
かくして低負荷域においては、過給機２の出口
における空気温度が低くても、機関１には温度の
高い空気を供給することができる。 Thus, in a low load range, even if the air temperature at the outlet of the supercharger 2 is low, high temperature air can be supplied to the engine 1.
ト 考案の効果
この考案のデイーゼル機関の給気温度調節装置
は、機関の低負荷運転時には給気温度を上げるよ
うに、負荷域に応じて給気温度を自動的にコント
ロールすることができる。G. Effects of the invention The diesel engine supply air temperature control device of this invention can automatically control the supply air temperature according to the load range so as to increase the supply air temperature when the engine is operating at low load.
なお、この考案の効果は、負荷と給気温度との
関係を示す第３図（従来装置の場合）および第４
図（本考案装置の場合）から瞭然である。これら
の図中、符号の意味するところは次のごとし：
ａ…第１段空気冷却器入口における給気温度
ｂ…第２段空気冷却器における給気温度
ｃ…室温
ｄ…クーラ系冷却水回路の冷却水温度
ｅ…ジヤケツト系冷却水回路の冷却水温度 The effect of this invention can be seen in Figures 3 (for conventional equipment) and 4, which show the relationship between load and supply air temperature.
It is clear from the figure (for the device of the present invention). In these figures, the symbols mean the following: a... Supply air temperature at the inlet of the first stage air cooler b... Supply air temperature at the second stage air cooler c... Room temperature d... Cooler system cooling water Cooling water temperature of the circuit e...Cooling water temperature of the jacket system cooling water circuit
第１図はこの考案による装置の一実施例のブロ
ツク線図であつて高負荷時における状態を示し、
第２図は低負荷時における状態を示す第１図と同
様のブロツク線図、第３図は従来装置における負
荷と給気温度の関係を示すグラフ、第４図はこの
考案による装置における負荷と給気温度の関係を
示すグラフである。
１……デイーゼル機関、２……過給機、３……
給気管、４……第１段空気冷却器、５……第２段
空気冷却器、６〜１３……クーラ系冷却水回路、
１４〜２７……ジヤケツト系冷却水回路、１８…
…切替弁。
FIG. 1 is a block diagram of an embodiment of the device according to this invention, showing the state under high load.
Fig. 2 is a block diagram similar to Fig. 1 showing the state at low load, Fig. 3 is a graph showing the relationship between load and supply air temperature in the conventional device, and Fig. 4 is a graph showing the relationship between load and supply air temperature in the device according to this invention. It is a graph showing the relationship between supply air temperature. 1... Diesel engine, 2... Supercharger, 3...
Air supply pipe, 4... First stage air cooler, 5... Second stage air cooler, 6 to 13... Cooler system cooling water circuit,
14-27... Jacket system cooling water circuit, 18...
...Switching valve.
Claims (1)
るクーラ系冷却水回路に接続した第１段空気冷却
器と、第１段空気冷却器の下流側に位置し、清水
冷却器を備えるジヤケツト系冷却水回路に接続し
た第２段空気冷却器と、機関の高負荷運転時には
機関からの高温冷却水を前記清水冷却器を介して
第２段空気冷却器へ送り、一方、低負荷運転時に
は機関からの高温冷却水をそのまま第２段空気冷
却器へ送るようにした切替弁とからなるデイーゼ
ル機関の給気温度調節装置。 A first-stage air cooler located downstream of the supercharger and connected to the cooler system cooling water circuit that circulates low-temperature cooling water, and a fresh water cooler located downstream of the first-stage air cooler. A second stage air cooler is connected to the jacket system cooling water circuit, and when the engine is operating at high load, high temperature cooling water from the engine is sent to the second stage air cooler via the fresh water cooler, while during low load operation A diesel engine supply air temperature control device that sometimes consists of a switching valve that sends high-temperature cooling water from the engine directly to the second stage air cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10862183U JPS6015929U (en) | 1983-07-12 | 1983-07-12 | Diesel engine supply air temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10862183U JPS6015929U (en) | 1983-07-12 | 1983-07-12 | Diesel engine supply air temperature control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6015929U JPS6015929U (en) | 1985-02-02 |
| JPH0310343Y2 true JPH0310343Y2 (en) | 1991-03-14 |
Family
ID=30253346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10862183U Granted JPS6015929U (en) | 1983-07-12 | 1983-07-12 | Diesel engine supply air temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6015929U (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6201886B2 (en) * | 2014-01-06 | 2017-09-27 | 株式会社デンソー | Intake air cooling system |
| KR102011269B1 (en) * | 2014-05-19 | 2019-08-16 | 한온시스템 주식회사 | Water-Cooled Intercooler |
| JP6327032B2 (en) * | 2014-07-17 | 2018-05-23 | 株式会社デンソー | Intake air cooling system |
| JP6511952B2 (en) * | 2015-05-15 | 2019-05-15 | いすゞ自動車株式会社 | Engine cooling system and engine cooling method |
| JP6641941B2 (en) * | 2015-12-02 | 2020-02-05 | 三菱自動車工業株式会社 | Air intake cooling system for internal combustion engine |
| JP2021038678A (en) * | 2019-08-30 | 2021-03-11 | 株式会社デンソー | Fluid circuit system for vehicle |
| JP7347138B2 (en) * | 2019-11-11 | 2023-09-20 | 株式会社デンソー | vehicle cooling water system |
-
1983
- 1983-07-12 JP JP10862183U patent/JPS6015929U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6015929U (en) | 1985-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4236492A (en) | Internal combustion engine having a supercharger and means for cooling charged air | |
| US3863612A (en) | Cooling system | |
| US3134371A (en) | Cooling system for internal combustion engines | |
| CA2172688A1 (en) | Turbocharged Engine Cooling Apparatus | |
| US10704476B2 (en) | Device and method for controlling the injection of air and exhaust gas at the intake of a supercharged internal-combustion engine | |
| JPH0310343Y2 (en) | ||
| US6347605B1 (en) | Moistening device for the inlet air of combustion engines | |
| KR20200015243A (en) | Control system for flowing of coolant and cotrol method for the same | |
| US6158399A (en) | Turbocharged engine cooling system with two-pass radiator | |
| US20040107922A1 (en) | Engine cooling system thermostat bypass for dual temperature control | |
| KR101946683B1 (en) | Cooling system and method for an internal combustion engine | |
| JPS6019912A (en) | Cooling device for internal-combustion engine | |
| US6314921B1 (en) | Turbocharged engine cooling system with two-pass radiator | |
| JP2005351194A (en) | Egr system | |
| GB1153655A (en) | Improvements in or relating to Internal Combustion Engines | |
| JP3444606B2 (en) | Reciprocating piston diesel engine cooling system | |
| CN110185527A (en) | Cooling Water of Diesel Locomotive system | |
| JPS60224937A (en) | Engine with supercharger | |
| JPS5840266Y2 (en) | Supercharged diesel engine with low compression ratio | |
| CN1091495A (en) | Move a kind of method of marine diesel engine | |
| JPH0343384Y2 (en) | ||
| JPS6114589Y2 (en) | ||
| JPS57165619A (en) | Cooling device for engine | |
| JPS621399Y2 (en) | ||
| JPS6311325Y2 (en) |