JP2007016651A - Device for controlling oil temperature - Google Patents

Device for controlling oil temperature Download PDF

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JP2007016651A
JP2007016651A JP2005197461A JP2005197461A JP2007016651A JP 2007016651 A JP2007016651 A JP 2007016651A JP 2005197461 A JP2005197461 A JP 2005197461A JP 2005197461 A JP2005197461 A JP 2005197461A JP 2007016651 A JP2007016651 A JP 2007016651A
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cooling water
circuit
oil
engine
heat exchanger
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Mitsuru Omura
充 大村
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To make a heat exchanger for ATF function as an oil warmer and an oil cooler without complicating a circuit structure. <P>SOLUTION: This device is provided with circulation circuits 3, 8, 14 of cooling water leading cooling water fed from an engine 1 to a radiator 10 including a heat exchanging part 13 and returning cooling water after passing the heat exchange part 13, a bypass circuit 9 branching off the circulating circuit 3 in an upstream of the heat exchanging part 13 and joining with the circulating circuit 14 in a downstream of the heat exchanging part 13, a flow rate change over means changing over flow rate of flow passing through the heat exchanging part 13 via the circulating circuit 8 and flow bypassing the heat exchanging part 13 via a bypass circuit 9 according to temperature of cooling water, and a heat exchanger 20 for oil provided in the circulating circuit 12 in a downstream of a confluence of the bypass circuit 9 and heating or cooling lubricating oil by heat exchange with cooling water. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、自動変速機などに用いられる潤滑油の油温を制御する油温制御装置に関する。   The present invention relates to an oil temperature control device that controls the temperature of lubricating oil used in an automatic transmission or the like.

この種の油温制御装置として、エンジン冷却水と自動変速機に用いられる潤滑油（以下、ＡＴＦ）とをＡＴＦ用熱交換器により熱交換させてＡＴＦを加熱または冷却するものが知られている（例えば特許文献１参照）。この特許文献１記載の装置では、エンジンからの冷却水がラジエータを通過してエンジンに戻る回路と、ラジエータをバイパスしてエンジンに戻る回路をそれぞれ形成し、エンジン冷却水温に応じて回路を切り換えてエンジン冷却水温を制御する。また、これとは別にエンジンからの冷却水がＡＴＦ用熱交換器を通過してエンジンに戻る回路と、ラジエータを通過した冷却水がＡＴＦ用熱交換器を通過してエンジンに戻る回路をそれぞれ形成し、エンジン冷却水温に応じて回路を切り換えてＡＴＦの油温を制御する。   As this type of oil temperature control device, a device that heats or cools ATF by exchanging heat between engine coolant and lubricating oil (hereinafter referred to as ATF) used in an automatic transmission by an ATF heat exchanger is known. (For example, refer to Patent Document 1). In the apparatus described in Patent Document 1, a circuit in which cooling water from the engine passes through the radiator and returns to the engine and a circuit that bypasses the radiator and returns to the engine are formed, and the circuit is switched according to the engine cooling water temperature. Control engine coolant temperature. Separately, a circuit in which the cooling water from the engine passes through the ATF heat exchanger and returns to the engine and a circuit in which the cooling water that passes through the radiator passes through the ATF heat exchanger and returns to the engine are formed. The circuit is switched according to the engine coolant temperature to control the ATF oil temperature.

特開２００４−２３２５１４号公報（図３）Japanese Patent Laying-Open No. 2004-232514 (FIG. 3)

しかしながら、上記特許文献１記載の装置では、エンジン冷却水がラジエータを通過およびバイパスする回路とは別に、ＡＴＦ用熱交換器を通過およびバイパスする回路を設けるため、回路構成が複雑化する。   However, in the apparatus described in Patent Document 1, since a circuit for passing and bypassing the ATF heat exchanger is provided separately from the circuit for passing and bypassing the engine coolant through the radiator, the circuit configuration is complicated.

本発明による油温制御装置は、エンジンから送出した冷却水を、熱交換部を有するラジエータに導き、この熱交換部を通過後の冷却水をエンジンに戻す冷却水の循環回路と、熱交換部の上流側の循環回路から分岐し、熱交換部の下流側の循環回路に合流するバイパス回路と、冷却水の温度に応じて、循環回路を介して熱交換部を通過する流れとバイパス回路を介して熱交換部をバイパスする流れの流量割合を変更する流量割合変更手段と、バイパス回路の合流点よりも下流側の循環回路に配設され、冷却水との熱交換により潤滑油を加熱または冷却するオイル用熱交換器とを備えることを特徴とする。   An oil temperature control device according to the present invention is a cooling water circulation circuit for guiding cooling water delivered from an engine to a radiator having a heat exchanging portion and returning the cooling water after passing through the heat exchanging portion to the engine, and a heat exchanging portion. A bypass circuit that branches from the upstream circulation circuit and joins the circulation circuit downstream of the heat exchange section, and a flow and bypass circuit that passes through the heat exchange section via the circulation circuit according to the temperature of the cooling water. The flow rate ratio changing means for changing the flow rate ratio of the flow bypassing the heat exchanging section and the circulation circuit downstream of the junction of the bypass circuit and heating the lubricating oil by heat exchange with the cooling water or And an oil heat exchanger for cooling.

本発明によれば、ラジエータの循環回路とバイパス回路の合流点よりも下流側にオイル用熱交換器を配設するようにしたので、回路構成を複雑化することなく、オイル用熱交換器にオイルウォーマーとしての機能とオイルクーラとしての機能を持たせることができる。   According to the present invention, since the oil heat exchanger is arranged downstream of the junction of the circulation circuit and the bypass circuit of the radiator, the oil heat exchanger can be obtained without complicating the circuit configuration. A function as an oil warmer and a function as an oil cooler can be provided.

以下、図１〜図３を参照して本発明による油温制御装置の実施の形態について説明する。
図１は本実施の形態に係る油温制御装置の構成を示す図である。エンジン１には冷却水の流れる冷却水路１ａが形成され、冷却水路１ａの上流側には冷却水を圧送するためのウォーターポンプ２が設けられている。冷却水路１ａの下流側は管路３を介してサーモスタット４に接続されるとともに、管路３から分岐した管路５を介して空調用ヒータ６（図３参照）の入口部に接続されている。ヒータ６の出口部は管路７を介しウォーターポンプ２に接続されている。 Hereinafter, an embodiment of an oil temperature control device according to the present invention will be described with reference to FIGS.
FIG. 1 is a diagram showing a configuration of an oil temperature control device according to the present embodiment. A cooling water channel 1a through which the cooling water flows is formed in the engine 1, and a water pump 2 for pumping the cooling water is provided on the upstream side of the cooling water channel 1a. The downstream side of the cooling water channel 1 a is connected to the thermostat 4 through the pipe 3 and is connected to the inlet of the air conditioning heater 6 (see FIG. 3) through the pipe 5 branched from the pipe 3. . The outlet portion of the heater 6 is connected to the water pump 2 via a pipe line 7.

サーモスタット４には管路８を介してラジエータ１０のアッパータンク１１が接続されるとともに、管路９を介してラジエータ１０のロアタンク１２が接続されている。サーモスタット４はエンジン冷却水温に応じて切り換わるバルブであり、サーモスタット４の開閉により管路８，９を流れる冷却水の流量割合を変更する。例えばエンジン冷却水温Ｔが所定値Ｔａ以上のときはサーモスタット４が開いてエンジン１からの冷却水を全て管路８側に導き、エンジン冷却水温Ｔが所定値Ｔａ未満のときはサーモスタット４が閉じてエンジン１からの冷却水を全て管路９側に導く。   An upper tank 11 of the radiator 10 is connected to the thermostat 4 through a pipe line 8, and a lower tank 12 of the radiator 10 is connected to the thermostat 4 through a pipe line 9. The thermostat 4 is a valve that switches according to the engine coolant temperature, and changes the flow rate of the coolant flowing through the pipelines 8 and 9 by opening and closing the thermostat 4. For example, when the engine cooling water temperature T is equal to or higher than a predetermined value Ta, the thermostat 4 is opened and all the cooling water from the engine 1 is guided to the pipe 8 side, and when the engine cooling water temperature T is lower than the predetermined value Ta, the thermostat 4 is closed. All the cooling water from the engine 1 is guided to the pipe line 9 side.

なお、エンジン冷却水温Ｔが所定値Ｔａ以上のときにエンジン１からの冷却水を管路９側に少量導くようにしてもよい。同様に、エンジン冷却水温Ｔが所定値Ｔａ未満のときにエンジン１からの冷却水を管路８側に少量導くようにしてもよい。エンジン冷却水温Ｔの増加に伴い管路８側を流れる流量割合を徐々に増加させることもできる。   Note that a small amount of cooling water from the engine 1 may be guided to the pipe 9 side when the engine cooling water temperature T is equal to or higher than the predetermined value Ta. Similarly, when the engine coolant temperature T is lower than the predetermined value Ta, a small amount of coolant from the engine 1 may be guided to the pipe line 8 side. As the engine cooling water temperature T increases, the flow rate ratio flowing through the pipe line 8 can be gradually increased.

アッパータンク１１とロアタンク１２はフィン部１３を介して連通し、アッパータンク１１に導かれた冷却水は下方のフィン部１３を通過してロアタンク１２へと流れる。フィン部１３には図示しない冷却ファンによって冷却風が送風され、冷却風とフィン部１３を流れる冷却水との熱交換により冷却水が冷却される。ロアタンク１２は管路１５を介してウォーターポンプ２に接続されている。なお、ロアタンク１２には、後述するＡＴＦウォーマー／クーラ２０が内蔵されている。   The upper tank 11 and the lower tank 12 communicate with each other through the fin portion 13, and the cooling water guided to the upper tank 11 passes through the lower fin portion 13 and flows to the lower tank 12. Cooling air is blown to the fin portion 13 by a cooling fan (not shown), and the cooling water is cooled by heat exchange between the cooling air and the cooling water flowing through the fin portion 13. The lower tank 12 is connected to the water pump 2 via a pipe line 15. The lower tank 12 includes an ATF warmer / cooler 20 described later.

本実施の形態では、自動変速機に用いられる潤滑油（以下、ＡＴＦ）をＡＴＦウォーマー／クーラとしてのＡＴＦ用熱交換器により加熱または冷却する。以下、この点について説明する。   In the present embodiment, lubricating oil (hereinafter referred to as ATF) used in an automatic transmission is heated or cooled by an ATF heat exchanger as an ATF warmer / cooler. Hereinafter, this point will be described.

図２はロアタンク１２の内部構造を示す図１のII-II線断面図である。ロアタンク１２の一端部には冷却水が流入する流入部１２ａが設けられ、他端部には冷却水が流出する流出部１２ｂが設けられている。流入部１２ａおよび流出部１２ｂにはそれぞれ管路９，１４が接続され、ラジエータ（フィン部１３）をバイパスした冷却水は流入部１２ａおよび流出部１２ｂを介してロアタンク１２内を流れる。また、フィン部１３を通過した冷却水は上方からロアタンク１２内に流入し、ロアタンク１２内を流れて流出部１２ｂから流出する。   2 is a cross-sectional view taken along the line II-II in FIG. One end of the lower tank 12 is provided with an inflow portion 12a through which cooling water flows, and the other end is provided with an outflow portion 12b through which cooling water flows out. Pipe lines 9 and 14 are connected to the inflow portion 12a and the outflow portion 12b, respectively, and the cooling water bypassing the radiator (fin portion 13) flows through the lower tank 12 through the inflow portion 12a and the outflow portion 12b. Further, the cooling water that has passed through the fin portion 13 flows into the lower tank 12 from above, flows through the lower tank 12, and flows out from the outflow portion 12b.

ロアタンク１２内の流入部１２ａと流出部１２ｂの間にはＡＴＦ用熱交換器２０が収容され、いわゆるインタンク式の熱交換器が形成されている。熱交換器２０の一端部にはＡＴＦが流入する流入部２０ａがロアタンク１２を貫通して設けられ、他端部にはＡＴＦが流出する流出部２０ｂがロアタンク１２を貫通して設けられている。この流入部２０ａと流出部２０ｂを介して熱交換器２０内をＡＴＦが流れ、自動変速機（不図示）と熱交換器２０の間をＡＴＦが循環する。このとき熱交換器２０を流れるＡＴＦはロアタンク１２内を流れる冷却水と熱交換され、ＡＴＦは冷却水により加熱または冷却される。   Between the inflow portion 12a and the outflow portion 12b in the lower tank 12, an ATF heat exchanger 20 is accommodated to form a so-called in-tank heat exchanger. An inflow portion 20 a through which ATF flows is provided through one end of the heat exchanger 20 through the lower tank 12, and an outflow portion 20 b through which ATF flows out is provided through the lower tank 12 at the other end. ATF flows through the heat exchanger 20 through the inflow portion 20a and the outflow portion 20b, and the ATF circulates between the automatic transmission (not shown) and the heat exchanger 20. At this time, the ATF flowing through the heat exchanger 20 is heat-exchanged with the cooling water flowing through the lower tank 12, and the ATF is heated or cooled by the cooling water.

次に、本実施の形態に係る油温制御装置の主要な動作を説明する。
図３は本実施の形態に係る油温制御装置の回路構成を模式的に示す図である。ウォーターポンプ２から圧送された冷却水は、エンジン１の冷却水路１ａを通過後、二手に分岐する。一方は管路５，ヒータ６，管路７を通過してエンジン１に戻る。他方は管路３を通過後、サーモスタット４により流れが制御される。 Next, main operations of the oil temperature control device according to the present embodiment will be described.
FIG. 3 is a diagram schematically showing a circuit configuration of the oil temperature control device according to the present embodiment. The cooling water pumped from the water pump 2 branches in two after passing through the cooling water channel 1 a of the engine 1. One passes through the pipe 5, the heater 6, and the pipe 7 and returns to the engine 1. On the other hand, the flow is controlled by the thermostat 4 after passing through the pipe 3.

ここで、エンジン始動直後等、エンジン冷却水温Ｔが所定値Ｔａより低いときはサーモスタット４は閉じており、エンジン１からの冷却水はサーモスタット４，管路９，ロアタンク１２内の熱交換器２０，管路１４を順次通過してエンジン１に戻る。この冷却水の循環により冷却水温が速やかに上昇し、熱交換器２０で冷却水とＡＴＦが熱交換される。このとき冷却水温は油温よりも早く上昇し、冷却水温よりも油温の方が低いため、熱交換器２０はＡＴＦウォーマーとして機能し、ＡＴＦの油温が上昇する。これにより自動変速機内の各部品同士のフリクションが低減し、燃費の向上を達成できる。   Here, when the engine cooling water temperature T is lower than the predetermined value Ta, such as immediately after the engine is started, the thermostat 4 is closed, and the cooling water from the engine 1 is used for the thermostat 4, the conduit 9, the heat exchanger 20 in the lower tank 12, It returns to the engine 1 through the pipeline 14 sequentially. Due to the circulation of the cooling water, the cooling water temperature quickly rises, and the heat exchanger 20 exchanges heat between the cooling water and the ATF. At this time, the cooling water temperature rises earlier than the oil temperature, and the oil temperature is lower than the cooling water temperature. Therefore, the heat exchanger 20 functions as an ATF warmer, and the ATF oil temperature rises. As a result, the friction between the components in the automatic transmission is reduced, and fuel efficiency can be improved.

一方、暖機運転が完了してエンジン冷却水温Ｔが所定値Ｔａ以上になると、サーモスタット４が開いて、エンジン１からの冷却水はサーモスタット４，管路８，ラジエータ１０のフィン部１３，熱交換器２０，管路１４を順次通過してエンジン１に戻る。この場合、冷却水はラジエータ１０で冷却風と熱交換して冷却されるため、冷却水温は一定範囲内に抑えられ、エンジン１のオーバーヒートを防止できる。このとき、熱交換器２０はＡＴＦクーラとして機能し、熱交換器２０ではラジエータ通過直後の冷却水とＡＴＦが熱交換されるため、ＡＴＦを効率よく冷却することができる。その結果、熱交換器２０を小型化することができる。   On the other hand, when the warm-up operation is completed and the engine cooling water temperature T becomes equal to or higher than the predetermined value Ta, the thermostat 4 is opened, and the cooling water from the engine 1 passes through the thermostat 4, the pipe line 8, the fin portion 13 of the radiator 10, and heat exchange. Returning to the engine 1 through the vessel 20 and the pipe line 14 sequentially. In this case, since the cooling water is cooled by the heat exchange with the cooling air by the radiator 10, the cooling water temperature is suppressed within a certain range, and overheating of the engine 1 can be prevented. At this time, the heat exchanger 20 functions as an ATF cooler. In the heat exchanger 20, the ATF can be efficiently cooled because heat is exchanged between the cooling water just after passing through the radiator and the ATF. As a result, the heat exchanger 20 can be reduced in size.

本実施の形態によれば以下のような作用効果を奏することができる。
（１）ラジエータ１０のフィン部１３を通過してエンジン１に戻る回路とフィン部１３をバイパスしてエンジン１に戻る回路を形成し、これらの回路をサーモスタット４により切り換えるとともに、フィン部１３を通過した冷却水とバイパスした冷却水がいずれも通過する箇所（ロアタンク１２）にＡＴＦ用熱交換器２０を配設するようにした。これにより冷却水温が低いときは熱交換器２０をＡＴＦウォーマーとして機能させ、冷却水温が高いときはＡＴＦクーラとして機能させることができ、単一の熱交換器２０によりＡＴＦの油温を効率よく制御することができる。
（２）エンジン冷却水がラジエータ１０を通過およびバイパスする回路とは別に、熱交換器２０を通過およびバイパスする回路を設ける必要がないため、管路の本数および切換バルブの個数を少なくすることができ、回路構成を簡素化できる。
（３）熱交換器２０をラジエータ１０のロアタンク１２内に設けるようにしたので、部品点数を削減でき、かつ、配置スペースを節約できる。この点、ロアタンク１２の外側に熱交換器２０を設ける場合には、ロアタンク１２から熱交換器２０に至るまでの管路を追加する必要があり、部品点数が増加し、配置スペースも余計に必要になる。
（４）ラジエータ１０の下流にオイルクーラを配設した既存の回路に本発明を適用する場合、ラジエータ１０の上流からバイパスした管路をオイルクーラの上流側に接続すればよいので、オイルクーラに容易にオイルウォーマーとしての機能を持たせることができる。例えば、ロアタンク１２内にオイルクーラを内蔵したものに対しては、オイルタンク１２に流入部１２ａを追加工するだけで、オイルクーラをオイルウォーマーとしても用いることができる。 According to the present embodiment, the following operational effects can be achieved.
(1) A circuit that passes through the fin portion 13 of the radiator 10 and returns to the engine 1 and a circuit that bypasses the fin portion 13 and returns to the engine 1 are formed. These circuits are switched by the thermostat 4 and pass through the fin portion 13. The ATF heat exchanger 20 is disposed at a location (lower tank 12) through which both the cooled water and the bypassed cooling water pass. As a result, the heat exchanger 20 can function as an ATF warmer when the cooling water temperature is low, and can function as an ATF cooler when the cooling water temperature is high. The single heat exchanger 20 can efficiently control the oil temperature of the ATF. can do.
(2) Since it is not necessary to provide a circuit for passing and bypassing the heat exchanger 20 separately from the circuit for passing and bypassing the engine coolant through the radiator 10, the number of pipes and the number of switching valves can be reduced. And the circuit configuration can be simplified.
(3) Since the heat exchanger 20 is provided in the lower tank 12 of the radiator 10, the number of parts can be reduced and the arrangement space can be saved. In this regard, when the heat exchanger 20 is provided outside the lower tank 12, it is necessary to add a pipeline from the lower tank 12 to the heat exchanger 20, the number of parts increases, and an arrangement space is also required. become.
(4) When the present invention is applied to an existing circuit in which an oil cooler is disposed downstream of the radiator 10, a pipeline bypassed from the upstream of the radiator 10 may be connected to the upstream side of the oil cooler. A function as an oil warmer can be easily provided. For example, for an oil cooler built in the lower tank 12, the oil cooler can be used as an oil warmer simply by additionally processing the inflow portion 12 a in the oil tank 12.

なお、上記実施の形態では、エンジン１，管路３，８，ラジエータ１０，管路１４により冷却水の循環回路を形成するとともに、管路９によりラジエータ１０のバイパス回路を形成し、ラジエータ１０のロアタンク１２内に熱交換器を配設するようにしたが、ラジエータ１０の熱交換部（フィン部１３）の下流側で、かつ、バイパス回路９の合流点よりも下流側に配設するのであれば、熱交換器２０の配置は上述したものに限らず、熱交換器２０をインタンク式としなくてもよい。換言すれば循環回路のフィン部１３の下流に熱交換器２０を配設し、この熱交換器２０の上流側で、かつフィン部１３の下流側の循環回路にバイパス回路９を合流させるのであれば、回路構成は上述したものに限らない。   In the above embodiment, the engine 1, the pipes 3, 8, the radiator 10, and the pipe 14 form a cooling water circulation circuit, and the pipe 9 forms a bypass circuit of the radiator 10, so that the radiator 10 Although the heat exchanger is disposed in the lower tank 12, it may be disposed on the downstream side of the heat exchange portion (fin portion 13) of the radiator 10 and on the downstream side of the junction of the bypass circuit 9. For example, the arrangement of the heat exchanger 20 is not limited to that described above, and the heat exchanger 20 may not be an in-tank type. In other words, the heat exchanger 20 is disposed downstream of the fin portion 13 of the circulation circuit, and the bypass circuit 9 is joined to the circulation circuit upstream of the heat exchanger 20 and downstream of the fin portion 13. For example, the circuit configuration is not limited to that described above.

サーモスタット４により管路８側と管路９側の冷却水の流量割合を変更するようにしたが、流量割合変更手段はこれに限らない。例えばサーモスタット４の代わりに電磁切換弁を設け、温度センサにより検出された冷却水温の検出値に応じて電磁切換弁を切り換えるようにしてもよい。熱交換器２０によりＡＴＦを加熱または冷却したが、ＡＴＦ以外の潤滑油（例えばＭＴ車のミッションオイル等）を加熱または冷却してもよい。   Although the flow rate ratio of the cooling water on the pipe line 8 side and the pipe line 9 side is changed by the thermostat 4, the flow rate ratio changing means is not limited to this. For example, an electromagnetic switching valve may be provided instead of the thermostat 4 and the electromagnetic switching valve may be switched according to the detected value of the coolant temperature detected by the temperature sensor. Although the ATF is heated or cooled by the heat exchanger 20, lubricating oil other than ATF (for example, mission oil for MT vehicles) may be heated or cooled.

すなわち、本発明の特徴、機能を実現できる限り、本発明は実施の形態の油温制御に限定されない。なお、以上の説明はあくまで一例であり、発明を解釈する際、上記実施形態の記載事項と特許請求の範囲の記載事項の対応関係になんら限定も拘束もされない。   That is, the present invention is not limited to the oil temperature control according to the embodiment as long as the features and functions of the present invention can be realized. The above description is merely an example, and when interpreting the invention, there is no limitation or restriction on the correspondence between the items described in the embodiment and the items described in the claims.

本発明の実施の形態に係る油温制御装置の構成を示す図。The figure which shows the structure of the oil temperature control apparatus which concerns on embodiment of this invention. 図１のII-II線断面図。II-II sectional view taken on the line of FIG. 本実施の形態に係る油温制御装置の回路構成を模式的に示す図。The figure which shows typically the circuit structure of the oil temperature control apparatus which concerns on this Embodiment.

符号の説明Explanation of symbols

１ エンジン
４ サーモスタット
３，８，９，１４ 管路
１０ ラジエータ
１２ ロアタンク
１３ フィン部
２０ ＡＴＦ用熱交換器
１２ａ 流入部
１２ｂ 流出部 1 Engine 4 Thermostat 3, 8, 9, 14 Pipe 10 Radiator 12 Lower tank 13 Fin section 20 ATF heat exchanger 12a Inflow section 12b Outflow section

Claims (2)

エンジンから送出された冷却水を、熱交換部を有するラジエータに導き、この熱交換部を通過後の冷却水をエンジンに戻す冷却水の循環回路と、
前記熱交換部の上流側の前記循環回路から分岐し、前記熱交換部の下流側の前記循環回路に合流するバイパス回路と、
冷却水の温度に応じて、前記循環回路を介して前記熱交換部を通過する流れと前記バイパス回路を介して前記熱交換部をバイパスする流れの流量割合を変更する流量割合変更手段と、
前記バイパス回路の合流点よりも下流側の前記循環回路に配設され、冷却水との熱交換により潤滑油を加熱または冷却するオイル用熱交換器とを備えることを特徴とする油温制御装置。 Cooling water sent out from the engine is guided to a radiator having a heat exchanging section, and a cooling water circulation circuit for returning the cooling water after passing through the heat exchanging section to the engine
A bypass circuit branched from the circulation circuit on the upstream side of the heat exchange unit and joined to the circulation circuit on the downstream side of the heat exchange unit;
According to the temperature of the cooling water, the flow rate ratio changing means for changing the flow rate ratio of the flow passing through the heat exchange unit via the circulation circuit and the flow bypassing the heat exchange unit via the bypass circuit;
An oil temperature control device, comprising: an oil heat exchanger disposed in the circulation circuit downstream of the junction of the bypass circuit and configured to heat or cool the lubricating oil by heat exchange with cooling water. . 請求項１に記載の油温制御装置において、
前記オイル用熱交換器は、前記熱交換部の下流のラジエータのロアタンク内に収容され、
前記ロアタンクの一端部に、前記バイパス回路を通過した冷却水をロアタンク内に流入する流入部が設けられ、他端部に、ロアタンク内の冷却水を流出する流出部が設けられることを特徴とする油温制御装置。 In the oil temperature control device according to claim 1,
The oil heat exchanger is accommodated in a lower tank of a radiator downstream of the heat exchange unit,
One end of the lower tank is provided with an inflow part through which the cooling water that has passed through the bypass circuit flows into the lower tank, and the other end is provided with an outflow part through which the cooling water in the lower tank flows out. Oil temperature control device.
JP2005197461A 2005-07-06 2005-07-06 Device for controlling oil temperature Pending JP2007016651A (en)

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KR101047752B1 (en) 2009-11-05 2011-07-07 현대자동차주식회사 Valves for Heat Exchange of Fluids
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CN103422968A (en) * 2013-09-10 2013-12-04 无锡市豫达换热器有限公司 Efficient and energy-saving heat exchanger based on embedded technology
JP2014081251A (en) * 2012-10-16 2014-05-08 Sanki Eng Co Ltd Water cooled type transmission oil heat exchanger test system
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CN109483181A (en) * 2019-01-08 2019-03-19 南京红鼎汽车零部件有限公司 Speed-changer tube cooler and the speed-changer tube cooler technological process of production
CN111247360A (en) * 2017-10-23 2020-06-05 五十铃自动车株式会社 Thermal control device

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101047752B1 (en) 2009-11-05 2011-07-07 현대자동차주식회사 Valves for Heat Exchange of Fluids
KR101134974B1 (en) * 2009-11-23 2012-04-09 현대자동차주식회사 Coolant control system of engine
CN102403090A (en) * 2011-11-16 2012-04-04 无锡马山永红换热器有限公司 Oil-water cooler
JP2014081251A (en) * 2012-10-16 2014-05-08 Sanki Eng Co Ltd Water cooled type transmission oil heat exchanger test system
US20160290189A1 (en) * 2013-03-19 2016-10-06 Yanmar Co., Ltd. Internal combustion engine and cogeneration system
US10180090B2 (en) * 2013-03-19 2019-01-15 Yanmar Co., Ltd. Internal combustion engine and cogeneration system
CN103422968A (en) * 2013-09-10 2013-12-04 无锡市豫达换热器有限公司 Efficient and energy-saving heat exchanger based on embedded technology
US9796244B2 (en) 2014-01-17 2017-10-24 Honda Motor Co., Ltd. Thermal management system for a vehicle and method
CN111247360A (en) * 2017-10-23 2020-06-05 五十铃自动车株式会社 Thermal control device
CN111247360B (en) * 2017-10-23 2024-02-23 五十铃自动车株式会社 Thermal control device
CN109483181A (en) * 2019-01-08 2019-03-19 南京红鼎汽车零部件有限公司 Speed-changer tube cooler and the speed-changer tube cooler technological process of production

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