JPH0633763A - Cooling device for internal combustion engine - Google Patents
Cooling device for internal combustion engineInfo
- Publication number
- JPH0633763A JPH0633763A JP19212392A JP19212392A JPH0633763A JP H0633763 A JPH0633763 A JP H0633763A JP 19212392 A JP19212392 A JP 19212392A JP 19212392 A JP19212392 A JP 19212392A JP H0633763 A JPH0633763 A JP H0633763A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- water
- pressure
- branch
- combustion engine
- 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.)
- Pending
Links
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内燃機関の冷却装置に
係り、特に水冷式内燃機関の冷却装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for an internal combustion engine, and more particularly to a cooling device for a water-cooled internal combustion engine.
【０００２】[0002]
【従来の技術】従来より、水冷式内燃機関においては、
内燃機関本体に設けられたウォータジャケットとラジエ
タとの間に冷却水を循環させる冷却装置が用いられてい
る（実開昭６２−１２２１２３号公報）。2. Description of the Related Art Conventionally, in a water-cooled internal combustion engine,
A cooling device that circulates cooling water between a water jacket and a radiator provided in the body of an internal combustion engine is used (Japanese Utility Model Laid-Open No. 62-122123).
【０００３】このような冷却装置に用いられる冷却水
は、内燃機関が暖機されていない状態と、十分に暖機さ
れた状態とでは温度が異なるため、その体積にも差異が
生じる。また、内燃機関の運転中は常に冷却水の循環が
行われており、ウォータジャケットには常にラジエタで
冷却された後の冷却水が供給されるが、内燃機関が停止
した際には、冷却水の循環も停止され、余熱で加熱され
た冷却水が沸騰する場合がある。Since the temperature of the cooling water used in such a cooling device differs between the state where the internal combustion engine is not warmed up and the state where it is sufficiently warmed up, there is a difference in its volume. Also, the cooling water is constantly circulated during operation of the internal combustion engine, and the cooling water after being cooled by the radiator is always supplied to the water jacket, but when the internal combustion engine is stopped, the cooling water is cooled. The circulation of is also stopped, and the cooling water heated by the residual heat may boil.
【０００４】このため、何らの手だてをも講じない場
合、ウォータジャケット、冷却水路及びラジエタからな
る循環系内の圧力が高くなり、冷却装置の破損を引き起
こすことになる。For this reason, if no measures are taken, the pressure in the circulation system consisting of the water jacket, the cooling water passage and the radiator becomes high, which causes damage to the cooling device.
【０００５】そこで、上記公報記載の冷却装置では、冷
却水の状態変化による循環系内の圧力変化を抑制するた
め、冷却水路の途中に、リザーブタンクに通じる分岐路
が設けられている。Therefore, in the cooling device described in the above publication, in order to suppress the pressure change in the circulation system due to the change in the state of the cooling water, a branch passage leading to the reserve tank is provided in the middle of the cooling water passage.
【０００６】この分岐路には、所定の圧力以上で開弁す
る定圧開放弁が設けられており、循環系内の圧力が所定
の設定圧より高くなった場合、冷却水はリザーブタンク
内に導かれる。このため、上記の冷却装置の循環系内の
圧力は所定の圧力以内に保持され、冷却水の沸騰等によ
る圧力変化により冷却装置が破損することはない。A constant pressure release valve that opens at a predetermined pressure or higher is provided in this branch passage. When the pressure in the circulation system becomes higher than a predetermined set pressure, the cooling water is introduced into the reserve tank. Get burned. Therefore, the pressure in the circulation system of the cooling device is maintained within a predetermined pressure, and the cooling device is not damaged by a pressure change due to boiling of cooling water or the like.
【０００７】[0007]
【発明が解決しようとする課題】しかし、上記従来の内
燃機関の冷却装置においては、分岐路が冷却水路の途中
に設けられているため、分岐路内に設置されている定圧
開放弁には循環系内の静圧に加えて、冷却水圧、つまり
冷却水の循環により生じる動圧が加わることになる。However, in the above-described conventional cooling device for an internal combustion engine, since the branch passage is provided in the middle of the cooling water passage, the constant pressure release valve installed in the branch passage circulates. In addition to the static pressure in the system, cooling water pressure, that is, dynamic pressure generated by circulation of cooling water, is applied.
【０００８】このため、冷却水に水流を与えるウォータ
ポンプの回転が、駆動源である内燃機関の回転に伴って
速くなり、冷却水の水流が速くなると、定圧開放弁には
強い動圧がかかることになる。For this reason, the rotation of the water pump, which applies the water flow to the cooling water, increases with the rotation of the internal combustion engine, which is the drive source. It will be.
【０００９】定圧開放弁に強い動圧がかかると、循環系
内の静圧は正常であるにもかかわらず、定圧開放弁が開
弁して、冷却水がリザーブタンクに導入されてしまう場
合がある。この場合、循環系内の冷却水量が不足するた
め、必要な冷却性能が得られなくなり、内燃機関がオー
バーヒートを起こし易くなる。When a strong dynamic pressure is applied to the constant pressure release valve, the constant pressure release valve may open and the cooling water may be introduced into the reserve tank even though the static pressure in the circulation system is normal. is there. In this case, since the amount of cooling water in the circulation system is insufficient, the required cooling performance cannot be obtained, and the internal combustion engine is likely to overheat.
【００１０】本発明は、上述の点に鑑みてなされたもの
であり、冷却水の水流によらず、循環系内の圧力が所定
の設定圧に達した場合にだけ冷却水をリザーブタンクに
導入する内燃機関の冷却装置を提供することを目的とす
る。The present invention has been made in view of the above points, and introduces cooling water into the reserve tank only when the pressure in the circulation system reaches a predetermined set pressure, regardless of the cooling water flow. It is an object of the present invention to provide a cooling device for an internal combustion engine.
【００１１】[0011]
【課題を解決するための手段】上記の課題は、内燃機関
とラジエタとを連結する冷却水路中に設けられ、該冷却
水路と冷却水のリザーブタンクとを連結する分岐路と、
該分岐路中に設けられ、前記冷却水路から前記分岐路に
供給される冷却水の水圧が所定の圧力以上の場合に開弁
する定圧開放弁とを備える内燃機関の冷却装置におい
て、前記分岐路中の、前記定圧開放弁上流位置に、前記
冷却水路から前記分岐路に供給される冷却水の水流を緩
和させる抵抗部材を設けた内燃機関の冷却装置により解
決される。Means for Solving the Problems The above problems are provided in a cooling water passage connecting an internal combustion engine and a radiator, and a branch passage connecting the cooling water passage and a reserve tank for cooling water,
A cooling device for an internal combustion engine, comprising: a constant pressure release valve which is provided in the branch passage and opens when the water pressure of the cooling water supplied from the cooling water passage to the branch passage is equal to or higher than a predetermined pressure. This is solved by a cooling device for an internal combustion engine, in which a resistance member for relaxing the flow of the cooling water supplied from the cooling water passage to the branch passage is provided upstream of the constant pressure release valve.
【００１２】[0012]
【作用】上記の構成によれば、前記冷却水路から前記分
岐路に供給される冷却水は、前記抵抗部材により水流が
緩和される。このため、前記抵抗部材を適切に配置する
ことにより、前記定圧開放弁にかかる圧力を、前記冷却
水路を流れる冷却水の水流の速遅にかかわらず前記冷却
水路内の圧力とほぼ等しくすることが可能となる。従っ
て、冷却水路内の圧力が所定の圧力未満の場合に前記定
圧開放弁が開弁することがなく、冷却装置の冷却性能が
低下することがない。According to the above construction, the flow of the cooling water supplied from the cooling water passage to the branch passage is relaxed by the resistance member. Therefore, by appropriately disposing the resistance member, the pressure applied to the constant pressure release valve can be made substantially equal to the pressure in the cooling water channel regardless of the speed of the cooling water flowing through the cooling water channel. It will be possible. Therefore, when the pressure in the cooling water passage is less than the predetermined pressure, the constant pressure release valve does not open, and the cooling performance of the cooling device does not deteriorate.
【００１３】[0013]
【実施例】図２は、本発明に係る内燃機関の冷却装置の
一実施例の要部の構成を表す斜視図を示す。FIG. 2 is a perspective view showing the structure of the essential parts of an embodiment of a cooling device for an internal combustion engine according to the present invention.
【００１４】同図中、符号１は、冷却水路を示す。この
冷却水路１は、その一方の端部が図示されない内燃機関
のウォータジャケットに連結されて、内燃機関の熱を吸
収してきた冷却水が供給される通路である。冷却通路１
の他方の端部は、流路分岐部２に連結される。In the figure, reference numeral 1 indicates a cooling water passage. The cooling water passage 1 is a passage whose one end is connected to a water jacket of an internal combustion engine (not shown) to supply cooling water which has absorbed the heat of the internal combustion engine. Cooling passage 1
The other end of is connected to the flow path branching section 2.
【００１５】図１は、本実施例装置に用いる流路分岐部
の平面断面図を示す。以下、説明の便宜上、同図及び従
来の流路分岐部の平面断面図である図３に沿って、本実
施例装置の要部である流路分岐部の構成について説明す
る。尚、図１及び図３において同一の部分には同一の符
号を付している。FIG. 1 is a plan sectional view of a flow path branching portion used in the apparatus of this embodiment. Hereinafter, for convenience of description, the configuration of the flow channel branching portion, which is the main part of the apparatus of the present embodiment, will be described with reference to FIG. 3 and FIG. 1 and 3, the same parts are designated by the same reference numerals.
【００１６】各図に示すように、流路分岐部２は、分岐
路２ａ及び本流路２ｂを有し、そのフランジ部をボルト
３で固定されることにより冷却水路１と連結されてい
る。すなわち、冷却水路１から供給された冷却水は、流
路分岐部２の内部で２つの流れに分岐され、その一方は
本流路２ｂへ、他方は分岐路２ａ方向へと流れることに
なる。As shown in the drawings, the flow channel branching section 2 has a branch channel 2a and a main flow channel 2b, and the flange portion of the flow channel branching section 2 is connected with the cooling water channel 1 by fixing it with bolts 3. That is, the cooling water supplied from the cooling water passage 1 is branched into two flows inside the flow passage branch portion 2, one of which flows to the main flow passage 2b and the other of which flows toward the branch passage 2a.
【００１７】また、図１に示すように、本実施例装置に
用いる流路分岐部２には、分岐路２ａの付け根の位置に
所定の粗さの金網からなる抵抗部材４が設置されてい
る。このため、冷却通路１から供給されてくる冷却水は
抵抗部材４を通過する際に水流が緩和される。Further, as shown in FIG. 1, the flow path branching portion 2 used in the apparatus of this embodiment is provided with a resistance member 4 made of a wire mesh having a predetermined roughness at the position of the root of the branching path 2a. . Therefore, the flow of the cooling water supplied from the cooling passage 1 is relaxed when passing through the resistance member 4.
【００１８】従来の流路分岐部では、図３に示すように
冷却水路１と分岐路２ａが直結していたため、冷却水路
１から供給される水流が速い場合と、遅い場合では分岐
路２ａ内の圧力に差異が生じていた。これに対して、本
実施例の流路分岐部２によれば、上記したように分岐路
２ａ内の圧力が、冷却水の水流の影響を受けにくいた
め、冷却水路１から供給される水流の速遅によらず分岐
路２ａ内に圧力に大きなの差異が生じることはない。In the conventional flow path branch portion, the cooling water channel 1 and the branch channel 2a are directly connected as shown in FIG. There was a difference in pressure. On the other hand, according to the flow channel branching unit 2 of the present embodiment, the pressure in the branch channel 2a is less likely to be affected by the water flow of the cooling water as described above, so that the water flow supplied from the cooling water channel 1 is not affected. There is no great difference in pressure in the branch passage 2a regardless of speed.
【００１９】また、この抵抗部材４は、フィルタとして
の作用も有している。すなわち、本実施例装置において
は、従来の装置と異なり、分岐路２ａ内に流入してくる
冷却水中に異物が含まれていない。特に、冷却水路１や
流路分岐部２のように鋳造で作られる部品に付着したま
まとされた鋳砂等が分岐路２ａ内に流入することがな
い。The resistance member 4 also has a function as a filter. That is, in the device of the present embodiment, unlike the conventional device, foreign matter is not included in the cooling water flowing into the branch passage 2a. In particular, casting sand or the like left attached to the components made by casting such as the cooling water passage 1 and the flow passage branching portion 2 does not flow into the branching passage 2a.
【００２０】図１に示すように、本流路２ｂは冷却水路
５と連結している。また、この冷却水路５はラジエタ６
に連結されている。すなわち、内燃機関のウォータジャ
ケット内を流れてきた冷却水は、冷却水路１、５及び流
路分岐部２を経由してラジエタ６に流入し、ここで空冷
される。その後、図示されないウォータポンプにより再
び内燃機関を冷却するためウォータジャケット内に送り
込まれる。As shown in FIG. 1, the main passage 2b is connected to the cooling water passage 5. In addition, this cooling water channel 5 is a radiator 6
Are linked to. That is, the cooling water that has flowed in the water jacket of the internal combustion engine flows into the radiator 6 via the cooling water passages 1 and 5 and the flow passage branch portion 2 and is air-cooled there. Then, it is fed into the water jacket to cool the internal combustion engine again by a water pump (not shown).
【００２１】また、分岐路２ａの上部には、キャップ７
が配設され、そのキャップ７の僅か下方には、リザーブ
水路８が連結されている。このリザーブ水路８は、分岐
路２ａとリザーブタンク９とを連結するための水路であ
る。A cap 7 is provided on the upper part of the branch path 2a.
Is provided, and a reserve water channel 8 is connected slightly below the cap 7. The reserve water channel 8 is a water channel for connecting the branch channel 2a and the reserve tank 9.
【００２２】図４は、分岐路２ａの上部と、上記のキャ
ップ７及びリザーブ水路８の構成を表す側面断面図を示
す。以下、図２及び図４に沿って、本実施例の冷却装置
の動作について説明する。FIG. 4 is a side sectional view showing the structure of the upper portion of the branch passage 2a and the cap 7 and the reserve water passage 8 described above. The operation of the cooling device of this embodiment will be described below with reference to FIGS. 2 and 4.
【００２３】図４に示すように、キャップ７にはスプリ
ング７ａを介して弁体７ｂが固定されている。この弁体
７ｂは定圧開放弁に相当し、分岐路２ａの開口部を上方
から閉塞する位置に設けら、スプリング７ａにより下方
に付勢されている。As shown in FIG. 4, a valve body 7b is fixed to the cap 7 via a spring 7a. The valve body 7b corresponds to a constant pressure release valve, is provided at a position that closes the opening of the branch passage 2a from above, and is urged downward by a spring 7a.
【００２４】また、リザーブ水路８は、弁体７ａと分岐
路２ａの側壁とキャップ７ａで囲まれた第１の空間１０
に導通している。このため、分岐路２ａ内の弁体７ｂよ
り下方の第２の空間１１内の圧力は、スプリング７ａの
バネ力により決定される所定の圧力未満に維持される。The reserve water channel 8 is surrounded by the valve body 7a, the side wall of the branch channel 2a, and the cap 7a.
Is connected to. Therefore, the pressure in the second space 11 below the valve body 7b in the branch passage 2a is maintained below a predetermined pressure determined by the spring force of the spring 7a.
【００２５】冷却水路１から第２の空間に供給される冷
却水の水圧が所定の圧力を越えると、スプリング７ａの
バネ力に抗って弁体７ｂが上方に移動し、第１の空間１
０と第２の空間１１が導通する。このため、冷却水路１
から供給される冷却水は、リザーブ水路８を通ってリザ
ーブタンク９内に導入される。When the water pressure of the cooling water supplied from the cooling water passage 1 to the second space exceeds a predetermined pressure, the valve body 7b moves upward against the spring force of the spring 7a, and the first space 1
0 and the second space 11 are electrically connected. Therefore, the cooling water channel 1
The cooling water supplied from the tank is introduced into the reserve tank 9 through the reserve water channel 8.
【００２６】冷却水がリザーブタンク９内に導入される
と、内燃機関のウォータジャケット、ラジエタ６及びこ
れらを連結している冷却水の通路等からなる循環系内を
循環する冷却水量が減少する。このため、循環系内の圧
力と共に、第２の空間１１内の圧力が低下して弁体７ｂ
は再び第１の空間１０と第２の空間１１との間を遮断す
る。When the cooling water is introduced into the reserve tank 9, the amount of the cooling water circulating in the circulation system including the water jacket of the internal combustion engine, the radiator 6 and the cooling water passage connecting them decreases. Therefore, the pressure in the second space 11 is reduced together with the pressure in the circulation system, and the valve element 7b
Again interrupts the connection between the first space 10 and the second space 11.
【００２７】このとき、上記したように従来の装置にお
いては、弁体７ｂが第２の空間１１方向から受ける圧力
は、第２の空間１１の静圧と、供給される冷却水の水流
による動圧とが重畳された圧力となる。At this time, in the conventional device as described above, the pressure applied to the valve body 7b from the direction of the second space 11 is the static pressure of the second space 11 and the motion of the supplied cooling water. The pressure and pressure are superimposed.
【００２８】このため、冷却水路１から供給される冷却
水の水流が速い場合、すなわちウォータポンプの駆動源
である内燃機関の回転数が高い場合は、循環系内の圧力
が所定の圧力に達していない場合でも弁体７ｂが開弁し
ていた。このため、従来の装置では、循環系内の冷却水
量が所定量に満たなくなり、所望の冷却性能が得られな
くなる場合があった。Therefore, when the water flow of the cooling water supplied from the cooling water passage 1 is fast, that is, when the rotation speed of the internal combustion engine that is the drive source of the water pump is high, the pressure in the circulation system reaches a predetermined pressure. Even if not, the valve body 7b was open. Therefore, in the conventional device, the amount of cooling water in the circulation system may not reach the predetermined amount, and the desired cooling performance may not be obtained.
【００２９】しかし、上記したように、本実施例装置に
おいては、従来の装置と異なり、分岐路２ａ内に供給さ
れる冷却水の圧力が、供給される冷却水の水流の影響を
受けない。このため、本実施例装置によれば、内燃機関
の運転状況によらず、循環系内の圧力が所定の静圧に達
するまで、弁体７ａが開弁することはない。However, as described above, in the apparatus of this embodiment, unlike the conventional apparatus, the pressure of the cooling water supplied into the branch passage 2a is not influenced by the water flow of the supplied cooling water. Therefore, according to the present embodiment device, the valve body 7a does not open until the pressure in the circulation system reaches a predetermined static pressure regardless of the operating condition of the internal combustion engine.
【００３０】更に、従来の装置では、分岐路２ａに供給
される冷却水中に鋳砂等の異物が混入していたため、開
弁した弁体７ｂが閉弁する際に、弁体７ａが閉塞すべき
部位に異物が噛み込んで、リザーブ水路８が遮断できな
い場合があった。Further, in the conventional device, since foreign matter such as casting sand is mixed in the cooling water supplied to the branch passage 2a, the valve body 7a is closed when the opened valve body 7b is closed. In some cases, the reserve water channel 8 could not be shut off because foreign matter was caught in the proper part.
【００３１】しかし、上記したように、本実施例装置に
おいては、抵抗部材４の作用により分岐路２ａ内に異物
が混入しないため、このようなリザーブ通路８の遮断不
良が生じることはない。However, as described above, in the apparatus of this embodiment, since the foreign material does not mix into the branch passage 2a due to the action of the resistance member 4, such a blocking failure of the reserve passage 8 does not occur.
【００３２】従って、本実施例の内燃機関の冷却装置に
よれば、常に循環系内に所望の冷却水量を維持すること
ができ、従来の装置のように冷却性能の劣化により内燃
機関をオーバーヒートさせることがない。Therefore, according to the cooling device for an internal combustion engine of this embodiment, a desired amount of cooling water can be always maintained in the circulation system, and the internal combustion engine is overheated due to deterioration of cooling performance as in the conventional device. Never.
【００３３】尚、弁体７ｂの中心部には、図示されない
負圧弁が設けられている。この負圧弁は、第１の空間１
０内の圧力に比べて第２の空間１１内の圧力が低い場合
にのみ開弁する一方向弁である。このため、冷却水温が
低下して冷却装置の循環系内の圧力が負圧となると、負
圧弁及びリザーブ水路８を介してリザーブタンク９から
冷却水が吸い上げられ、循環系内へと戻される。この際
に、抵抗部材４に捕獲されていた異物は除去されるた
め、鋳砂等の異物により抵抗部材４が目詰まりすること
はない。A negative pressure valve (not shown) is provided at the center of the valve body 7b. This negative pressure valve is provided in the first space 1
It is a one-way valve that opens only when the pressure in the second space 11 is lower than the pressure in 0. Therefore, when the cooling water temperature decreases and the pressure in the circulation system of the cooling device becomes a negative pressure, the cooling water is sucked up from the reserve tank 9 via the negative pressure valve and the reserve water passage 8 and returned to the circulation system. At this time, since the foreign matter captured by the resistance member 4 is removed, the resistance member 4 is not clogged with the foreign matter such as casting sand.
【００３４】また、本実施例装置においては、抵抗部材
４を用いて分岐路２ａ内に供給される冷却水の水流を緩
和したが、水流の緩和手段はこれに限るものではない。
例えば配管にくびれを設ける等により、弁体７ｂに至る
水流が緩和される手段であればよい。In the apparatus of this embodiment, the resistance member 4 is used to reduce the water flow of the cooling water supplied into the branch passage 2a, but the water flow mitigation means is not limited to this.
Any means may be used as long as the water flow to the valve body 7b is relaxed, for example, by providing the pipe with a constriction.
【００３５】[0035]
【発明の効果】上述の如く、本発明によれば、冷却水路
内を流れる水流が抵抗部材で緩和された後に分岐路内に
供給される。このため、定圧開放弁は水流に影響され
ず、分岐路内の静圧が所定の設定圧に達した場合にのみ
開弁し、常に循環系内には所望の冷却水量が維持され
る。従って、従来の冷却装置と異なり、冷却水量不足に
より冷却性能が低下することがない。As described above, according to the present invention, the water flow flowing in the cooling water passage is supplied to the branch passage after being moderated by the resistance member. Therefore, the constant pressure release valve is not affected by the water flow, and is opened only when the static pressure in the branch reaches a predetermined set pressure, and the desired amount of cooling water is always maintained in the circulation system. Therefore, unlike the conventional cooling device, the cooling performance does not deteriorate due to the insufficient amount of cooling water.
【００３６】このように、本発明に係る内燃機関の冷却
装置は、内燃機関の運転状態によらず安定した冷却性能
を発揮することができ、オーバーヒート等の不具合を防
止することができるという特長を有している。As described above, the cooling device for an internal combustion engine according to the present invention can exhibit stable cooling performance regardless of the operating state of the internal combustion engine, and can prevent problems such as overheating. Have
【図１】本発明に係る内燃機関の冷却装置の一実施例の
要部を表す断面図である。FIG. 1 is a sectional view showing a main part of an embodiment of a cooling device for an internal combustion engine according to the present invention.
【図２】本発明に係る内燃機関の冷却装置の一実施例の
構成を表す斜視図である。FIG. 2 is a perspective view showing a configuration of an embodiment of a cooling device for an internal combustion engine according to the present invention.
【図３】本実施例装置の要部に対応する従来の装置の一
部を表す断面図である。FIG. 3 is a cross-sectional view showing a part of a conventional device corresponding to the main part of the device of this embodiment.
【図４】本実施例装置に用いる定圧開放弁の一例の側面
断面図である。FIG. 4 is a side sectional view of an example of a constant pressure release valve used in the device of this embodiment.
１、５ 冷却水路 ２ 流路分岐部 ２ａ 分岐路 ２ｂ 本流路 ４ 抵抗部材 ６ ラジエタ ７ キャップ ７ａ スプリング ７ｂ 弁体 ８ リザーブ水路 ９ リザーブタンク 1, 5 Cooling water channel 2 Flow channel branching section 2a Branch channel 2b Main flow channel 4 Resistance member 6 Radiator 7 Cap 7a Spring 7b Valve body 8 Reserve water channel 9 Reserve tank
Claims (1)
路中に設けられ、該冷却水路と冷却水のリザーブタンク
とを連結する分岐路と、該分岐路中に設けられ前記冷却
水路から前記分岐路に供給される冷却水の水圧が所定の
圧力以上の場合に開弁する定圧開放弁とを備える内燃機
関の冷却装置において、 前記分岐路中の、前記定圧開放弁上流位置に、前記冷却
水路から前記分岐路に供給される冷却水の水流を緩和さ
せる抵抗部材を設けたことを特徴とする内燃機関の冷却
装置。1. A branch passage provided in a cooling water passage connecting an internal combustion engine and a radiator to connect the cooling water passage to a cooling water reserve tank; and a branch passage provided in the branch passage from the cooling water passage. In a cooling device for an internal combustion engine, which comprises a constant pressure release valve that opens when the water pressure of the cooling water supplied to the passage is equal to or higher than a predetermined pressure, in the branch passage, at the constant pressure release valve upstream position, the cooling water passage. A cooling device for an internal combustion engine, comprising: a resistance member for reducing a flow of cooling water supplied from the branch passage to the branch passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19212392A JPH0633763A (en) | 1992-07-20 | 1992-07-20 | Cooling device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19212392A JPH0633763A (en) | 1992-07-20 | 1992-07-20 | Cooling device for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0633763A true JPH0633763A (en) | 1994-02-08 |
Family
ID=16286061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19212392A Pending JPH0633763A (en) | 1992-07-20 | 1992-07-20 | Cooling device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633763A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008025973A (en) * | 2006-07-25 | 2008-02-07 | Gijutsu Kaihatsu Sogo Kenkyusho:Kk | Heat exchange system |
| US9021651B2 (en) | 2010-12-27 | 2015-05-05 | Robert Bosch Gmbh | Wiper device, in particular a motor vehicle windshield wiper device |
| DE112017002548T5 (en) | 2016-05-18 | 2019-02-21 | Denso Corporation | Vehicle wiper device |
-
1992
- 1992-07-20 JP JP19212392A patent/JPH0633763A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008025973A (en) * | 2006-07-25 | 2008-02-07 | Gijutsu Kaihatsu Sogo Kenkyusho:Kk | Heat exchange system |
| US9021651B2 (en) | 2010-12-27 | 2015-05-05 | Robert Bosch Gmbh | Wiper device, in particular a motor vehicle windshield wiper device |
| DE112017002548T5 (en) | 2016-05-18 | 2019-02-21 | Denso Corporation | Vehicle wiper device |
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