JPH0713460B2 - Cylinder liner temperature control device for internal combustion engine - Google Patents
Cylinder liner temperature control device for internal combustion engineInfo
- Publication number
- JPH0713460B2 JPH0713460B2 JP9458586A JP9458586A JPH0713460B2 JP H0713460 B2 JPH0713460 B2 JP H0713460B2 JP 9458586 A JP9458586 A JP 9458586A JP 9458586 A JP9458586 A JP 9458586A JP H0713460 B2 JPH0713460 B2 JP H0713460B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- cylinder liner
- temperature
- engine
- cooling
- 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 - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 16
- 239000000498 cooling water Substances 0.000 claims description 99
- 238000001816 cooling Methods 0.000 claims description 24
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/161—Controlling of coolant flow the coolant being liquid by thermostatic control by bypassing pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/06—Cleaning; Combating corrosion
- F01P2011/066—Combating corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/31—Cylinder temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は内燃機関のシリンダライナの周囲に，シリンダ
内を駆動するピストンの行程により燃料を圧縮・点火・
爆発の過程で発生する熱を吸収するために，冷却水を供
給する装置の改良に関し，シリンダライナの温度を検出
し供給冷却水の流量を調整することにより，シリンダラ
イナの温度制御をできるようにしたものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention compresses / ignites fuel around the cylinder liner of an internal combustion engine by the stroke of a piston driving in the cylinder.
Regarding the improvement of the device that supplies cooling water to absorb the heat generated in the process of explosion, the temperature of the cylinder liner can be controlled by detecting the temperature of the cylinder liner and adjusting the flow rate of the supplied cooling water. It was done.
［従来の技術］ 内燃機関のピストンを往復摺動し吸気・圧縮・爆発・排
気の行程でシリンダ内で発生する熱がシリンダライナに
伝達される。また，高負荷運転や低負荷運転により発生
する熱量は異なる。このように負荷により異なった熱量
がシリンダライナを通じて放出されるが，これを吸収す
るために一般に内燃機関のシリンダライナの周囲にに冷
却水を循環させる装置が設けられている。[Prior Art] The heat generated in the cylinder during the intake, compression, explosion, and exhaust strokes by reciprocally sliding the piston of the internal combustion engine is transferred to the cylinder liner. In addition, the amount of heat generated by high load operation and low load operation is different. As described above, different amounts of heat are released through the cylinder liner depending on the load, and in order to absorb the heat, a device for circulating cooling water is generally provided around the cylinder liner of the internal combustion engine.
第３図は舶用内燃機関を例とする従来のシリンダライナ
冷却制御装置である。FIG. 3 shows a conventional cylinder liner cooling control device, for example, a marine internal combustion engine.
シリンダライナａを冷却するためシリンダジャケットｂ
との間の冷却室ｃに冷却水機関供給口ｄより冷却水を通
水し，冷却水機関吐出口ｅより排出するように，前記冷
却室ｃを流路とするように通水される。本装置において
冷却水機関吐出口ｅとシリンダ冷却水冷却器ｇとの間
で，機関吐出口ｅの冷却水温度を温度計ｆで計測し，シ
リンダライナ冷却後の冷却水温度を一定に保つように温
度調整弁ｈにて，機関吐出口ｅより流入する高温水と，
冷却器ｇより供給される冷水の混合割合を変化させるこ
とにより，冷却水は機関吐出口ｅの温度が一定となるよ
うな制御が温度調整弁ｈを作動させてなされている。Cylinder jacket b for cooling cylinder liner a
Cooling water is supplied from the cooling water engine supply port d to the cooling chamber c between and, and is discharged from the cooling water engine discharge port e so that the cooling chamber c serves as a flow path. In this device, the temperature of the cooling water at the engine discharge port e is measured by the thermometer f between the cooling water engine discharge port e and the cylinder cooling water cooler g so that the cooling water temperature after cooling the cylinder liner is kept constant. At the temperature adjustment valve h, high temperature water flowing from the engine discharge port e,
By changing the mixing ratio of the cold water supplied from the cooler g, the cooling water is controlled such that the temperature of the engine discharge port e becomes constant by operating the temperature adjusting valve h.
［発明が解決しようとする問題点］ しかしながら，上記した従来例では，冷却水は機関吐出
口の温度の制御のみであるため，長時間低負荷運転され
ると冷却水冷却器をバイパスしても，冷却水温度が規定
値以下になり，シリンダライナの内壁温度が低下してし
まうので，シリンダ内の燃焼ガス中のSO2,H2O等の凝結
が起こり，該シリンダライナの内壁での酸化生成物によ
り，低温腐蝕（硫酸腐蝕）が発生するという問題があつ
た。さらに，低負荷時シリンダライナ内壁温度が低下す
ると機関の熱効率が以下し燃料消費率が悪くなるという
問題があった。また，これをさけるためには特別な加熱
装置を設け，シリンダライナの内壁温度の低下を防止し
なければならないという問題があった。[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, since the cooling water only controls the temperature of the engine discharge port, even if the cooling water cooler is bypassed during a long-time low load operation. Since the temperature of the cooling water falls below the specified value and the inner wall temperature of the cylinder liner drops, SO 2 and H 2 O, etc. in the combustion gas in the cylinder condense and oxidize on the inner wall of the cylinder liner. There is a problem that low temperature corrosion (sulfuric acid corrosion) occurs due to the product. Further, there is a problem that the thermal efficiency of the engine becomes lower and the fuel consumption rate deteriorates when the temperature of the cylinder liner inner wall decreases at low load. In addition, in order to avoid this, there is a problem in that a special heating device must be provided to prevent the temperature of the inner wall of the cylinder liner from decreasing.
本発明はかかる実情に鑑み，シリンダライナの内壁温度
を一定に保つように冷却水の流量を制御するために，シ
リンダライナの直接温度センサーを設け，効果的に流量
を調整するための制御装置を提供しようとするものであ
る。In view of such circumstances, the present invention provides a direct temperature sensor for a cylinder liner in order to control the flow rate of cooling water so as to keep the inner wall temperature of the cylinder liner constant, and to provide a control device for effectively adjusting the flow rate. It is the one we are trying to provide.
［問題を解決するための手段］ かかる目的を達成するために，本発明は，内燃機関のシ
リンダライナの外周に周設したシリンダジャケットと，
該シリンダライナと該シリンダジャケットとの間に構成
される冷却室と，該冷却室に冷却水を供給する冷却水機
関供給口と，該冷却室の冷却水を排出する冷却水機関吐
出口と，該冷却水機関供給口と該冷却水機関吐出口との
間に冷却水供給ポンプと冷却器とを設け配管接続したシ
リンダライナ冷却装置において，該シリンダライナの温
度監視対象部の近傍に設けた温度検出用のセンサーと，
該冷却水機関供給口には該冷却水供給ポンプと並列に設
けた流量調整弁と，該冷却水機関吐出口に設けた絞り弁
と，該冷却器の出口に設けた温度調整弁と，前記温度セ
ンサーの検出信号により前記絞り弁と前記流量調整弁と
前記温度調整弁とを制御する制御装置を備えたものであ
る。[Means for Solving the Problem] In order to achieve such an object, the present invention relates to a cylinder jacket provided around the outer periphery of a cylinder liner of an internal combustion engine,
A cooling chamber formed between the cylinder liner and the cylinder jacket, a cooling water engine supply port for supplying cooling water to the cooling chamber, and a cooling water engine discharge port for discharging cooling water from the cooling chamber, In a cylinder liner cooling device in which a cooling water supply pump and a cooler are provided between the cooling water engine supply port and the cooling water engine discharge port and connected by piping, the temperature provided in the vicinity of the temperature monitoring target part of the cylinder liner A sensor for detection,
At the cooling water engine supply port, a flow rate adjusting valve provided in parallel with the cooling water supply pump, a throttle valve provided at the cooling water engine discharge port, a temperature adjusting valve provided at the outlet of the cooler, and A control device for controlling the throttle valve, the flow rate adjusting valve, and the temperature adjusting valve according to a detection signal of a temperature sensor is provided.
［実施例］ 以下，本発明を添付図面に基づき詳細に説明する。[Examples] The present invention will be described in detail below with reference to the accompanying drawings.
第１図は，本発明の一実施例を示すものである。第１図
において,1aはシリンダライナ,1bはシリンダライナ内
壁,1cはシリンダライナにて囲まれた燃焼室,2はシリン
ダライナの外周に設けられたシリンダジャケット,3はシ
リンダライナ頂部に設けられたシリンダカバー,4はシリ
ンダライナの中を往復摺動するように嵌装されたピスト
ン,5はシリンダライナ1aとシリンダジャケット２の間に
設けられた冷却室,6はシリンダライナ1aの温度監視対象
部の近傍に設けた温度センサー,7は冷却室５への冷却水
機関供給口,8は冷却室５からの冷却水機関吐出口,9は冷
却用の水を供給する冷却水供給タンク,10は冷却水を冷
却するための冷却器,11は冷却用の水を送給する供給ポ
ンプ,12は温度センサーよりの信号を受信し，絞り弁，
温度調整弁，および流量調整弁を作動制御するための制
御装置,13は冷却水機関吐出口の流量を調整するため制
御装置12よりの信号にて作動する絞り弁,14は冷却器よ
りの冷却水と冷却水機関吐出口より循環する水を混合し
制御装置12よりの信号にて作動する温度調整弁,15は冷
却水機関供給口へ供給ポンプより送給する流量を調整
し，制御装置12よりの信号にて，作動する流量調整弁,1
6aは冷却水供給タンク出口のストップ弁,16bは冷却水機
関吐出口の近傍に設けたストップ弁,16cは冷却水供給タ
ンク出口のストップ弁,16dは冷却器への入口のストップ
弁,17は冷却水配管の空気抜き管,18,19,20,22,23,24は
冷却水配管,21は冷却水を補給するための補水管,25は冷
却水供給タンクの加熱蒸気管,26は冷却器の冷却水管27
は冷却水供給タンクの給水管である。FIG. 1 shows an embodiment of the present invention. In FIG. 1, 1a is a cylinder liner, 1b is an inner wall of the cylinder liner, 1c is a combustion chamber surrounded by the cylinder liner, 2 is a cylinder jacket provided on the outer circumference of the cylinder liner, and 3 is provided on the top of the cylinder liner. Cylinder cover, 4 is a piston fitted so as to slide back and forth in the cylinder liner, 5 is a cooling chamber provided between the cylinder liner 1a and the cylinder jacket 2, and 6 is a temperature monitoring target part of the cylinder liner 1a. A temperature sensor provided in the vicinity of, a cooling water engine supply port 7 to the cooling chamber 5, a cooling water engine discharge port 8 from the cooling chamber 5, a cooling water supply tank 9 for supplying cooling water, and 10 A cooler for cooling the cooling water, 11 is a supply pump for supplying cooling water, 12 is a signal from a temperature sensor, and a throttle valve,
A controller for controlling the operation of the temperature adjusting valve and the flow rate adjusting valve, 13 is a throttle valve operated by a signal from the controller 12 to adjust the flow rate of the cooling water engine discharge port, and 14 is a cooling from the cooler. The temperature control valve, 15 which mixes water and water circulating from the cooling water engine discharge port and operates by a signal from the control device 12, controls the flow rate sent from the supply pump to the cooling water engine supply port, and the control device 12 Flow control valve that operates by the signal from
6a is a stop valve at the outlet of the cooling water supply tank, 16b is a stop valve provided near the outlet of the cooling water engine, 16c is a stop valve at the outlet of the cooling water supply tank, 16d is a stop valve at the inlet to the cooler, and 17 is Air vent pipe of cooling water pipe, 18, 19, 20, 22, 23, 24 are cooling water pipes, 21 is a replenishing pipe for supplying cooling water, 25 is a heating steam pipe of a cooling water supply tank, and 26 is a cooler Cooling water pipe 27
Is the water supply pipe of the cooling water supply tank.
シリンダライナ1aとシリンダカバー３とピストン４によ
り構成される燃焼室1cには燃料が供給され，該シリンダ
ライナ1aの内を往復摺動するピストン４の作動により圧
縮・点火・爆発の行程が生じ，熱が発生する。これらの
熱の発生量は内燃機関にかかる負荷により異なるが，燃
焼室1cで発生する熱負荷を除去するため冷却水が使用さ
れる。該冷却水は冷却水機関入口７より送給し，冷却水
機関吐出口８より吐出される。このとき冷却水はシリン
ダライナ1aとシリンダジャケット２より構成される冷却
室５を流路として通過しシリンダライナ1aを冷却する。
冷却水は冷却水機関吐出口８より絞り弁13をへて，さら
にストップ弁16bをへて冷却水配管18より，冷却水冷却
器10および温度調整弁14に到達する。冷却水冷却器10に
て冷却された冷却水は，冷却水配管20により温度調整弁
14に到達し，冷却水配管18より来た冷却水と混合し，冷
却水配管22により，供給ポンプ11の吸入側に接続され
る。該供給ポンプ11の吐出側は冷却水配管24にて，冷却
水機関入口７に導びかれる。また，該供給ポンプ11の吐
出側と吸入側を該供給ポンプ11と並列状に冷却水のバイ
パス用に冷却水配管23を接続し該冷却水配管23に流量調
整用の流量調整弁15を設けてある。また，前記絞り弁13
の後に冷却水配管17により，ストップ弁16aを介して冷
却水供給タンク９に接続されている。該冷却水供給タン
ク９には冷却水を補給する給水管27と，冷却水の温度調
整用に加熱蒸気管25が装備されている。シリンダライナ
1aにはシリンダライナ内壁1bの温度を計測するための温
度計６がシリンダジャケット２を貫通し，温度監視対象
部に装着されており，絞り弁13および流量調整弁15およ
び温度調整弁14に制御信号を伝達する手段にて接続され
ている。Fuel is supplied to a combustion chamber 1c composed of a cylinder liner 1a, a cylinder cover 3 and a piston 4, and a stroke of compression, ignition and explosion occurs due to the operation of a piston 4 which reciprocally slides in the cylinder liner 1a. Heat is generated. The amount of heat generated varies depending on the load applied to the internal combustion engine, but cooling water is used to remove the heat load generated in the combustion chamber 1c. The cooling water is supplied from the cooling water engine inlet 7 and discharged from the cooling water engine discharge port 8. At this time, the cooling water passes through the cooling chamber 5 composed of the cylinder liner 1a and the cylinder jacket 2 as a flow path to cool the cylinder liner 1a.
The cooling water reaches the cooling water cooler 10 and the temperature adjusting valve 14 from the cooling water engine discharge port 8 through the throttle valve 13 and further through the stop valve 16b through the cooling water pipe 18. The cooling water cooled by the cooling water cooler 10 is cooled by the cooling water pipe 20 to a temperature control valve.
It reaches 14 and mixes with the cooling water coming from the cooling water pipe 18, and is connected to the suction side of the supply pump 11 by the cooling water pipe 22. The discharge side of the supply pump 11 is led to a cooling water engine inlet 7 through a cooling water pipe 24. Further, the discharge side and the suction side of the supply pump 11 are connected in parallel with the supply pump 11 to a cooling water pipe 23 for bypassing cooling water, and the cooling water pipe 23 is provided with a flow rate adjusting valve 15 for flow rate adjustment. There is. In addition, the throttle valve 13
After that, the cooling water pipe 17 is connected to the cooling water supply tank 9 via the stop valve 16a. The cooling water supply tank 9 is equipped with a water supply pipe 27 for supplying cooling water and a heating steam pipe 25 for adjusting the temperature of the cooling water. Cylinder liner
A thermometer 6 for measuring the temperature of the cylinder liner inner wall 1b penetrates the cylinder jacket 2 and is attached to the temperature monitoring target portion at 1a, and is controlled by the throttle valve 13, the flow rate adjusting valve 15, and the temperature adjusting valve 14. They are connected by means of transmitting signals.
次に本発明の作動について説明する。いま，機関が低負
荷運転され，温度計６により検出されたシリンダライナ
内壁1bの温度が任意の設定温度Toより低下すると，温度
調整弁14に冷却水配管20より流入する低温冷却水の流入
を停止する指令信号が制御装置12により伝達される。そ
れにもかかわらずシリンダライナ内壁1bの温度が設定温
度Toより上昇しないときは，制御装置12より流量調整弁
15に冷却水流量を減少させる指令信号を与え，同時に冷
却室５の冷却水圧力を一定に保たせるために，絞り弁13
を絞る指令信号を与える。以上のような作動により，シ
リンダライナ1aを冷却する冷却室５内の冷却水の流量を
低下させ，冷却水温度を上昇させるとともに，冷却水流
量の低下によるシリンダライナ1aに生じたホットスポッ
トでの冷却室５内の蒸気の発生を防止するこつができ
る。また，シリンダライナ内壁1bの温度が設定温度Toよ
り上昇すれば，制御装置12より流量調整弁15に冷却水流
量の制限を緩和させる指令信号を与え，同時に絞り弁13
による絞りを緩和する指令信号を与え，冷却水流量を増
加させる。さらに，機関が高負荷運転されるときは，制
御装置12より，流量調整弁15を開，絞り弁13を開，温度
調整弁14には設定温度Toとなるように冷却水配管20より
流入する低温冷却水の流入を増加させる信号を与える。
以上の作動により，温度調整弁14より冷水と温水の混合
による温度制御を行なうことができ，シリンダライナ1a
を冷却することができる。なお，第２図は冷却水温度と
シリンダライナ内壁1b温度と機関の各負荷における変化
を示している。縦軸に温度，横軸には機関の負荷を，ま
た，実線は従来例，点線は本発明を示している。本図は
特に機関の低負荷運転において本発明により冷却水機関
供給口および冷却水機関吐出口の温度を上昇させること
により，シリンダライナ内壁1bの温度を設定温度Toより
低下することなく機関の運転ができることが示されてい
る。Next, the operation of the present invention will be described. Now, when the engine is operated under a low load and the temperature of the cylinder liner inner wall 1b detected by the thermometer 6 falls below an arbitrary set temperature To, the inflow of low-temperature cooling water from the cooling water pipe 20 into the temperature control valve 14 is prevented. A command signal to stop is transmitted by the control device 12. If the temperature of the cylinder liner inner wall 1b nevertheless rises above the set temperature To, the controller 12 causes the flow control valve to
A throttle valve 13 is provided to give a command signal for reducing the flow rate of cooling water to 15 and at the same time keep the cooling water pressure in the cooling chamber 5 constant.
Give a command signal to squeeze. By the above-described operation, the flow rate of the cooling water in the cooling chamber 5 for cooling the cylinder liner 1a is reduced, the temperature of the cooling water is increased, and at the hot spot generated in the cylinder liner 1a due to the reduction of the cooling water flow rate. It is possible to prevent the generation of steam in the cooling chamber 5. When the temperature of the cylinder liner inner wall 1b rises above the set temperature To, the controller 12 gives a command signal to the flow rate adjusting valve 15 to relax the restriction of the flow rate of the cooling water, and at the same time, the throttle valve 13
A command signal to relax the throttle due to is given to increase the cooling water flow rate. Further, when the engine is operated under a high load, the controller 12 opens the flow rate adjusting valve 15 and the throttle valve 13 and flows into the temperature adjusting valve 14 through the cooling water pipe 20 so as to reach the set temperature To. It gives a signal to increase the inflow of cold cooling water.
With the above operation, temperature control can be performed by mixing cold water and hot water from the temperature control valve 14, and the cylinder liner 1a
Can be cooled. Note that FIG. 2 shows changes in the cooling water temperature, the cylinder liner inner wall 1b temperature, and each load of the engine. The vertical axis represents temperature, the horizontal axis represents engine load, the solid line represents the conventional example, and the dotted line represents the present invention. This figure shows the operation of the engine without lowering the temperature of the cylinder liner inner wall 1b below the set temperature To by increasing the temperature of the cooling water engine supply port and the temperature of the cooling water engine discharge port according to the present invention particularly in the low load operation of the engine. Has been shown to be possible.
［発明の効果］ 本発明の内燃機関のシリンダライナ温度制御装置は以上
のような構成を有するので，次のような優れた効果を発
揮する。[Advantages of the Invention] Since the cylinder liner temperature control device for an internal combustion engine of the present invention has the above-mentioned configuration, it exhibits the following excellent effects.
１） シリンダライナ内壁の温度を直接監視できるとと
もに，シリンダライナ内壁の温度を硫酸が凝結する温度
以上に制御できる制御装置を有するので硫酸の凝結によ
るシリンダライナ内壁の低温腐蝕を防止することができ
る。また，このため機関の低負荷での長時間運転が可能
となる。1) Since the temperature of the inner wall of the cylinder liner can be directly monitored, and the control device that can control the temperature of the inner wall of the cylinder liner to be higher than the temperature at which sulfuric acid is condensed, low temperature corrosion of the inner wall of the cylinder liner due to condensation of sulfuric acid can be prevented. In addition, this allows the engine to operate for a long time with a low load.
２） シリンダライナ内壁温度を機関の低負荷で上昇す
ることができるため，機関の熱効率の改善が得られる。
また，潤滑油粘性の低下で機械効率の改善が得られる。2) The internal wall temperature of the cylinder liner can be increased with a low load on the engine, which improves the thermal efficiency of the engine.
In addition, the reduction of lubricating oil viscosity improves mechanical efficiency.
３） シリンダライナ内壁の温度を直接計測できるの
で，シリンダライナのスカフィングセンサーとしても用
いることができる。3) Since the temperature of the inner wall of the cylinder liner can be measured directly, it can also be used as a scuffing sensor for the cylinder liner.
第１図は本発明の実施例を示し本装置をとりつけた内燃
機関の一部切断正説明図。第２図は本発明の実施例にお
ける冷却水温度とシリンダライナ内壁温度と機関の各負
荷における変化状態図。第３図は従来例を示した内燃機
関の一部切断正面説明図である。 図中,1a……シリンダライナ,1b……シリンダライナ内
壁,1c……燃焼室,2……シリンダジャケット,3……シリ
ンダカバー,4……ピストン,5……冷却室,6……温度計,7
……冷却水機関供給口,8……冷却水機関吐出口,9……冷
却水供給タンク,10……冷却水冷却器,11……供給ポン
プ,12……制御装置,13……絞り弁,14……温度調整弁,15
……流量調整弁,16a,16b,16c,16d……ストップ弁,17…
…空気抜き管,18,19,20,22,23,24……冷却水配管,21…
…補水管,25……加熱蒸気管,26……冷却水管,27給水
管，FIG. 1 is a partial cut-away explanatory view of an internal combustion engine to which the present invention is attached, showing an embodiment of the present invention. FIG. 2 is a diagram showing changes in the cooling water temperature, the cylinder liner inner wall temperature, and each load of the engine in the embodiment of the present invention. FIG. 3 is a partially cut front view of an internal combustion engine showing a conventional example. In the figure, 1a ... Cylinder liner, 1b ... Cylinder liner inner wall, 1c ... Combustion chamber, 2 ... Cylinder jacket, 3 ... Cylinder cover, 4 ... Piston, 5 ... Cooling chamber, 6 ... Thermometer , 7
...... Cooling water engine supply port, 8 …… Cooling water engine discharge port, 9 …… Cooling water supply tank, 10 …… Cooling water cooler, 11 …… Supply pump, 12 …… Control device, 13 …… Throttle valve , 14 …… Temperature control valve, 15
...... Flow control valves, 16a, 16b, 16c, 16d …… Stop valve, 17…
… Air vent pipe, 18,19,20,22,23,24 …… Cooling water pipe, 21…
… Water supply pipe, 25 …… Heating steam pipe, 26 …… Cooling water pipe, 27 Water supply pipe,
Claims (1)
たシリンダジャケットと，該シリンダライナと該シリン
ダジャケットとの間に構成される冷却室と，該冷却室に
冷却水を供給する冷却水機関供給口と，該冷却室の冷却
水を排出する冷却水機関吐出口と，該冷却水機関供給口
と該冷却水機関吐出口との間に冷却水供給ポンプと冷却
器とを設け配管接続したシリンダライナ冷却装置におい
て，該シリンダライナの温度監視対象部の近傍に設けた
温度検出用のセンサーと，該冷却水機関供給口には該冷
却水供給ポンプと並列に設けた流量調整弁と，該冷却水
機関吐出口に設けた絞り弁と，該冷却器の出口に設けた
温度調整弁と，前記温度センサーの検出信号により前記
絞り弁と前記流量調整弁と前記温度調整弁とを制御する
制御装置と，からなることを特徴とする内燃機関のシリ
ンダライナ温度制御装置。1. A cylinder jacket provided around an outer circumference of a cylinder liner of an internal combustion engine, a cooling chamber formed between the cylinder liner and the cylinder jacket, and a cooling water engine for supplying cooling water to the cooling chamber. A supply port, a cooling water engine discharge port for discharging the cooling water in the cooling chamber, and a cooling water supply pump and a cooler provided between the cooling water engine supply port and the cooling water engine discharge port for pipe connection. In a cylinder liner cooling device, a temperature detecting sensor provided in the vicinity of a temperature monitoring target portion of the cylinder liner, a flow rate adjusting valve provided in parallel with the cooling water supply pump at the cooling water engine supply port, A throttle valve provided at the outlet of the cooling water engine, a temperature adjusting valve provided at the outlet of the cooler, and a control for controlling the throttle valve, the flow rate adjusting valve, and the temperature adjusting valve by a detection signal of the temperature sensor. From the device Cylinder liner temperature control apparatus for an internal combustion engine characterized by Rukoto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9458586A JPH0713460B2 (en) | 1986-04-25 | 1986-04-25 | Cylinder liner temperature control device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9458586A JPH0713460B2 (en) | 1986-04-25 | 1986-04-25 | Cylinder liner temperature control device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62251419A JPS62251419A (en) | 1987-11-02 |
| JPH0713460B2 true JPH0713460B2 (en) | 1995-02-15 |
Family
ID=14114350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9458586A Expired - Fee Related JPH0713460B2 (en) | 1986-04-25 | 1986-04-25 | Cylinder liner temperature control device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713460B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2527248Y2 (en) * | 1989-02-09 | 1997-02-26 | 三菱重工業株式会社 | Cylinder liner temperature controller |
| DE59610349D1 (en) * | 1996-06-20 | 2003-05-22 | Waertsilae Schweiz Ag Winterth | Cooling system for the cylinder jacket of an internal combustion engine |
| US12264616B1 (en) | 2023-09-11 | 2025-04-01 | Pratt & Whitney Canada Corp. | Rotary engine and cooling systems thereof |
-
1986
- 1986-04-25 JP JP9458586A patent/JPH0713460B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62251419A (en) | 1987-11-02 |
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