JP2005090508A - Temperature control method for internal combustion engine and cooling system for internal combustion engine - Google Patents

Temperature control method for internal combustion engine and cooling system for internal combustion engine Download PDF

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JP2005090508A
JP2005090508A JP2004262149A JP2004262149A JP2005090508A JP 2005090508 A JP2005090508 A JP 2005090508A JP 2004262149 A JP2004262149 A JP 2004262149A JP 2004262149 A JP2004262149 A JP 2004262149A JP 2005090508 A JP2005090508 A JP 2005090508A
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coolant
hot water
internal combustion
combustion engine
water reservoir
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JP4098765B2 (en
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Eike Willers
ビラース アイク
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Behr Thermot Tronik GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
    • 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
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/20—Indicating devices; Other safety devices concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P2005/105—Using two or more 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F01P2005/125—Driving auxiliary pumps electrically
    • 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
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • 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
    • F01P11/14—Indicating devices; Other safety devices
    • F01P2011/205—Indicating devices; Other safety devices using heat-accumulators
    • 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
    • F01P2023/00—Signal processing; Details thereof
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • F01P2060/045—Lubricant cooler for transmissions
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/08—Cabin heater

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To give preheat to an internal combustion engine of an automobile when cold-started. <P>SOLUTION: The internal combustion engine 10 for the automobile has a hot water storage 25 attached to a cooling liquid circuit. When the internal combustion engine is operated off, an almost all amount of cooling liquid is supplied from the cooling liquid circuit to the hot water storage, and when the internal combustion engine is started, the cooling liquid is returned from the hot water storage to the cooling liquid circuit, again. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、自動車の内燃機関を温度調節する方法と、内燃機関のための冷却システムに関するものであって、内燃機関には液状の冷却液のための冷却液循環回路を有する冷却システムが設けられている。   The present invention relates to a method for adjusting the temperature of an internal combustion engine of an automobile and a cooling system for the internal combustion engine, the internal combustion engine being provided with a cooling system having a coolant circulation circuit for liquid coolant. ing.

内燃機関は、冷間始動後その駆動温度に達するまでは、大量の有害物質の遊離および高い摩擦とそれに結びついた摩耗のような、比較的悪い特性を有する。冷間始動の欠陥は、内燃機関の十分な予熱によって回避することができる。これまでこの目的のために提案された手段、特に冷却液循環回路内へ組み込まれる潜熱貯蔵器または温水貯蔵器は、これまで実際においては受け入れられていない。   Internal combustion engines have relatively bad characteristics, such as the release of a large amount of harmful substances and high friction and the associated wear, until the driving temperature is reached after a cold start. Cold start defects can be avoided by sufficient preheating of the internal combustion engine. So far, the means proposed for this purpose, in particular the latent heat reservoir or hot water reservoir incorporated into the coolant circulation circuit, have not been accepted in practice so far.

特許文献１からは、温水貯蔵器として冷却液循環回路の補償および排気容器を設けることが知られており、同容器は遮断機構によって遮断可能なバイパス導管を介して冷却液ポンプの吸込み側と接続されている。エンジンがＯＦＦにされた場合には、冷却循環回路内にある補償容器の遮断機構が閉成され、始動の際に開放される。   From Patent Document 1, it is known to provide a coolant circulation circuit compensation and an exhaust container as a hot water reservoir, which is connected to the suction side of the coolant pump through a bypass conduit that can be shut off by a shut-off mechanism. Has been. When the engine is turned off, the shutoff mechanism of the compensation container in the cooling circuit is closed and opened at the start.

ドイツ公開公報ＤＥ１４５１８９０German publication DE1451890

本発明の課題は、冷却循環回路の冷却液の量を増大させる必要なしに、冷間始動の際の内燃機関の予熱を可能にすることである。   An object of the present invention is to enable preheating of an internal combustion engine during a cold start without having to increase the amount of coolant in the cooling circuit.

この課題は、内燃機関がＯＦＦにされた場合に、ほぼ全部の量の冷却液が冷却液循環回路から温水貯蔵器へ給送され、内燃機関の始動時に温水貯蔵器から冷却液が再び冷却液循環回路内へ戻されることによって、解決される。   The problem is that when the internal combustion engine is turned off, almost the entire amount of coolant is fed from the coolant circulation circuit to the hot water reservoir, and the coolant is again supplied from the hot water reservoir when the internal combustion engine is started. It is solved by returning it to the circulation circuit.

この種の温水貯蔵器は、常に冷却液によって満たされてはおらず、車両重量を取り立てて言うほど増大させない。他方で、実際には全量の冷却液が温水貯蔵器内へ給送されるので、熱い冷却液が利用されずに冷却液循環回路内へ残ることはないので、内燃機関の予熱のために利用可能な熱エネルギが極めて高くなる。   This type of hot water reservoir is not always filled with coolant and does not increase the vehicle weight as much. On the other hand, since the entire amount of coolant is actually fed into the hot water reservoir, hot coolant is not used and does not remain in the coolant circulation circuit, so it is used for preheating the internal combustion engine. The possible thermal energy is very high.

本発明の他の形態においては、冷却液循環回路内に室内暖房用熱交換器および／またはトランスミッションオイル用熱交換器および／またはエンジンオイル用熱交換器が設けられており、かつこの全部の冷却液循環回路から冷却液が温水貯蔵器内へ給送される。   In another embodiment of the present invention, a heat exchanger for indoor heating and / or a heat exchanger for transmission oil and / or a heat exchanger for engine oil are provided in the coolant circulation circuit, and all of the cooling is performed. Coolant is fed into the hot water reservoir from the liquid circulation circuit.

内燃機関のための冷却システムにおいては、本発明に基づく課題は、冷却液循環回路から分岐した回路内に温水貯蔵器が配置され、温水貯蔵器は、少なくとも冷却液循環回路の容積にほぼ相当する容積を有し、内燃機関がＯＦＦにされた場合に冷却液を冷却液循環回路から温水貯蔵器内へ給送するための手段と、内燃機関がＯＮにされた場合に冷却液を冷却液循環回路内へ戻すための手段とを備えている、いることによって、解決される。   In a cooling system for an internal combustion engine, the problem based on the present invention is that a hot water reservoir is arranged in a circuit branched from the coolant circulation circuit, and the hot water reservoir substantially corresponds to at least the volume of the coolant circulation circuit. Means for supplying coolant from the coolant circulation circuit into the hot water reservoir when the internal combustion engine is turned off, and circulating the coolant when the internal combustion engine is turned on. By means of returning to the circuit.

本発明の他の特徴と利点は、本発明の実施例についての以下の説明から明らかにされる。   Other features and advantages of the present invention will become apparent from the following description of embodiments of the present invention.

図１に示す内燃機関１０は、ラジエータ１１と共に冷却循環回路内に配置されている。冷却液ポンプ１２は、導管１３を介して冷却液を内燃機関１０へ給送する。内燃機関１０を出た冷却液は、導管１４を介してラジエータ１１の入口へ流れる。導管１４からは、サーモスタット弁１６へ通じるバイパス導管１５が分岐しており、そのサーモスタット弁を通して内燃機関１０から来る冷却液を導管１７を介して直接冷却液ポンプ１２によって吸い込むことができる。冷却液が冷たい場合には、サーモスタット弁１６はバイパス導管１５と冷却液ポンプ１２へ通じる導管１７の間の接続を開放するので、内燃機関を出た冷却液は直接また内燃機関１０へ供給される。   An internal combustion engine 10 shown in FIG. 1 is disposed in a cooling circuit together with a radiator 11. The coolant pump 12 feeds the coolant to the internal combustion engine 10 via the conduit 13. The coolant exiting the internal combustion engine 10 flows to the inlet of the radiator 11 through the conduit 14. A bypass conduit 15 leading to the thermostat valve 16 branches from the conduit 14, and the coolant coming from the internal combustion engine 10 can be directly sucked by the coolant pump 12 through the conduit 17 through the thermostat valve. When the coolant is cold, the thermostat valve 16 opens the connection between the bypass conduit 15 and the conduit 17 leading to the coolant pump 12 so that the coolant leaving the internal combustion engine is supplied directly to the internal combustion engine 10 as well. .

サーモスタット弁１６には、ラジエータ１１から来る還流導管１８が接続されている。バイパス導管１５を介して供給される冷却液が予め定められた温度に達するとすぐに、サーモスタット弁１６はバイパス導管を遮断して、還流導管１８を開放することを開始するので、次々とラジエータ１１から来る冷却液が導管１７を介して冷却液ポンプ１２の吸込み側へ達する。サーモスタット弁１６は、バイパス導管１５とクーラー還流導管１８を通して導管１７とそれに伴って内燃機関１０へ供給される、冷却液の量を定める。それによって内燃機関１０は、駆動温度に制御される。   A reflux conduit 18 coming from the radiator 11 is connected to the thermostat valve 16. As soon as the coolant supplied via the bypass conduit 15 reaches a predetermined temperature, the thermostat valve 16 shuts off the bypass conduit and starts to open the reflux conduit 18 so that the radiator 11 in turn. The coolant coming from the coolant reaches the suction side of the coolant pump 12 via the conduit 17. Thermostat valve 16 defines the amount of coolant that is supplied to conduit 17 and concomitantly internal combustion engine 10 through bypass conduit 15 and cooler return conduit 18. Thereby, the internal combustion engine 10 is controlled to the drive temperature.

エンジン出口導管１４からは、熱交換器２０へ通じる導管１９が分岐しており、その熱交換器は車両のための室内暖房用構成部分である。熱交換器２０から流出する冷却液は、混合室の領域においてサーモスタット弁１６へ供給される。   The engine outlet conduit 14 branches off from a conduit 19 leading to a heat exchanger 20, which is an indoor heating component for the vehicle. The coolant flowing out of the heat exchanger 20 is supplied to the thermostat valve 16 in the region of the mixing chamber.

この冷却液循環回路の一番高い箇所に、図示されていない排気弁を介して導管２２が接続されており、その導管は高いところに位置する補償容器２３へ通じている。一点鎖線で示す導管２２内を流れるのは、大体において空気または蒸気である。補償容器２３内に集まる液状の冷却液は、導管２４を介して冷却液循環回路へ戻される。この導管２４は、冷却液ポンプ１２の吸込み側に連通している。   A conduit 22 is connected to the highest portion of the coolant circulation circuit via an exhaust valve (not shown), and the conduit leads to a compensation vessel 23 located at a high position. It is mostly air or steam that flows in the conduit 22 indicated by the alternate long and short dash line. The liquid coolant collected in the compensation container 23 is returned to the coolant circulation circuit via the conduit 24. The conduit 24 communicates with the suction side of the coolant pump 12.

上述した冷却液循環回路からの分岐内に、温水貯蔵器２５が配置されており、その温水貯蔵器の容積は、冷却循環回路内に、すなわち内燃機関１０、ラジエータ１１、熱交換器２０、サーモスタット弁１６および導管１３、１４、１５、１７、１８、１９および２１内に存在しているほぼ全量の冷却液を収容することができるように、定められている。温水貯蔵器２５は、導管２６を介して冷却液ポンプ１２の吸込み側に接続されている。導管２６内には、電動駆動されるポンプ２７と電気的に切り替え可能な弁２８が配置されている。   A hot water reservoir 25 is arranged in the branch from the above-mentioned coolant circulation circuit, and the volume of the hot water reservoir is within the coolant circulation circuit, that is, the internal combustion engine 10, the radiator 11, the heat exchanger 20, and the thermostat. It is defined to accommodate substantially the entire amount of coolant present in the valve 16 and conduits 13, 14, 15, 17, 18, 19 and 21. The hot water reservoir 25 is connected to the suction side of the coolant pump 12 via a conduit 26. In the conduit 26, an electrically driven pump 27 and an electrically switchable valve 28 are arranged.

内燃機関１０がＯＦＦにされた場合には、ポンプ２７がＯＮにされ、そのポンプの駆動は予め定められた期間の間維持される。この期間は、そのポンプ内へ冷却液循環回路の全量の冷却液を吸い込んで、それまでに空になっている、すなわち空気を有する温水貯蔵器２５へ給送することができるように、計算される。ポンプ２７の電動機のスイッチＯＮによって、電気的に操作可能な弁２８、たとえば電磁弁２８も開放される。全量の冷却液は、温水貯蔵器２５内へポンプアップされ、すなわち冷却液循環回路１１が空にされる。温水貯蔵器２５内に含まれている空気は、導管２９を介して流出し、その導管は補償容器２３に接続されている。実際においては、この導管２９内に遮断弁３０を配置すると理にかなっており、その遮断弁も同様に電気的に操作可能であって、かつ弁２８と共に開放し、かつ閉成される。冷却液がポンプ２７によって冷却液循環回路から汲み出される間、空気は導管２２を介してだんだんと冷却液循環回路内へ流れる。   When the internal combustion engine 10 is turned off, the pump 27 is turned on, and the drive of the pump is maintained for a predetermined period. This period is calculated so that the entire amount of coolant in the coolant circulation circuit can be drawn into the pump and delivered to the hot water reservoir 25 that has been emptied so far, i.e. with air. The When the switch of the electric motor of the pump 27 is turned ON, an electrically operable valve 28, for example, an electromagnetic valve 28 is also opened. The entire amount of coolant is pumped up into the hot water reservoir 25, i.e. the coolant circulation circuit 11 is emptied. The air contained in the hot water reservoir 25 flows out through the conduit 29, which is connected to the compensation container 23. In practice, it makes sense to place a shut-off valve 30 in this conduit 29, which is likewise electrically operable and opens and closes with the valve 28. While coolant is being pumped out of the coolant circulation circuit by the pump 27, air gradually flows into the coolant circulation circuit via the conduit 22.

内燃機関１０の始動時に、弁２８、３０は開放される。しかし、内燃機関と共に始動する、電動ポンプとすることのできる、冷却液ポンプ１２は、通常内燃機関１０のクランク軸と駆動接続されており、温水貯蔵器２５から冷却液を吸い込んで、それを内燃機関１０内へ給送し、そこからさらに冷却循環回路内へ戻す。温水貯蔵器２５は冷却液ポンプ１２よりも高い場所にあるので、冷却液は重力に基づいて冷却液ポンプ１２の吸込み側へ流れる。温水貯蔵器２５が空になった後に、弁２８、３０は閉成する。   When the internal combustion engine 10 is started, the valves 28 and 30 are opened. However, the coolant pump 12, which can be an electric pump that starts with the internal combustion engine, is normally connected to the crankshaft of the internal combustion engine 10, sucks the coolant from the hot water reservoir 25, and supplies it to the internal combustion engine. The fuel is fed into the engine 10 and then returned to the cooling circuit. Since the hot water reservoir 25 is located higher than the coolant pump 12, the coolant flows to the suction side of the coolant pump 12 based on gravity. After the hot water reservoir 25 is empty, the valves 28 and 30 are closed.

好ましくは高性能の温水貯蔵器２５が設けられ、その温水貯蔵器はできるだけ、２４時間以内に摂氏約１００°から６０°への温度低下しか行われないように断熱されている。   A high performance hot water reservoir 25 is preferably provided, which is insulated so that as much as possible a temperature drop from about 100 degrees Celsius to 60 degrees Celsius occurs within 24 hours.

全ての熱い冷却液が冷却液循環回路から温水貯蔵器２５内へ移送されるので、内燃機関１０を予熱するためにそれに応じた高い熱エネルギが提供される。さらに、室内暖房用熱交換器２０も内燃機関１０の冷間始動の際に暖かい冷却液を供給されるので、暖房が極めて早期に応答する、という利点が得られる。   Since all hot coolant is transferred from the coolant circulation circuit into the hot water reservoir 25, a correspondingly high thermal energy is provided to preheat the internal combustion engine 10. Further, since the indoor heating heat exchanger 20 is also supplied with a warm coolant when the internal combustion engine 10 is cold-started, there is an advantage that heating responds very quickly.

図示の実施形態の変形例においては、温水貯蔵器は２段階で形成されており、すなわち２つのチャンバを有しており、それらが切り替え可能な供給装置を介して供給を受ける。この場合においては、第１段階において、第１のチャンバが内燃機関から取り出された冷却液の量で充填され、その後切り替えられて、第２の段階においては第２のチャンバがラジエータ１１から来る冷却液で充填され、その冷却液は通常内燃機関から来る冷却液よりも冷たい。従って、異なる温度水準を有する２つの冷却液が混合されることが、防止される。   In a variant of the illustrated embodiment, the hot water reservoir is formed in two stages, i.e. it has two chambers, which are supplied via a switchable supply device. In this case, in the first stage, the first chamber is filled with the amount of coolant removed from the internal combustion engine and then switched, and in the second stage, the second chamber is cooled from the radiator 11. Filled with liquid, the coolant is usually cooler than the coolant coming from the internal combustion engine. Therefore, mixing of two coolants having different temperature levels is prevented.

図２に示す実施例は、同様に、内燃機関１０、ラジエータ１１、冷却液ポンプ１２、サーモスタット弁１６および車両の室内暖房用熱交換器２０を備えた冷却液循環回路を有している。この冷却液循環回路には、排気導管２２と還流導管２４を有する補償容器２３も属している。暖房用熱交換器２０は、エンジン出口導管１４には接続されていない。むしろ、熱交換器は別の導管３１を介して、内燃機関１０から流出する冷却液を供給される。熱交換器２０からサーモスタット弁１６の混合室へ至る導管内に、切り替え可能な制御弁３２が配置されている。   The embodiment shown in FIG. 2 similarly includes a coolant circulation circuit including an internal combustion engine 10, a radiator 11, a coolant pump 12, a thermostat valve 16, and a heat exchanger 20 for heating the vehicle interior of the vehicle. A compensation vessel 23 having an exhaust conduit 22 and a reflux conduit 24 also belongs to this coolant circulation circuit. The heating heat exchanger 20 is not connected to the engine outlet conduit 14. Rather, the heat exchanger is supplied with coolant flowing out of the internal combustion engine 10 via a separate conduit 31. A switchable control valve 32 is arranged in the conduit from the heat exchanger 20 to the mixing chamber of the thermostat valve 16.

車両の室内暖房用熱交換器２０に対して並列に、冷却液循環回路内にトランスミッションオイル用熱交換器３３が設けられている。このトランスミッションオイル用熱交換器３３は、冷却液と、内燃機関１０に属するオートマチックトランスミッション３４のオイルとによって貫流される。さらに、エンジンオイル用熱交換器３５が設けられており、その熱交換器も同様に内燃機関の冷却液とエンジンオイルによって貫流される。   A transmission oil heat exchanger 33 is provided in the coolant circulation circuit in parallel with the vehicle interior heating heat exchanger 20. The transmission oil heat exchanger 33 is flown by the coolant and the oil of the automatic transmission 34 belonging to the internal combustion engine 10. Furthermore, a heat exchanger 35 for engine oil is provided, and the heat exchanger is also passed through by the coolant of the internal combustion engine and the engine oil.

この構造においても、温水貯蔵器２５ａが設けられており、その容積は、冷却液循環回路内に存在しているすべての冷却液量を収容することができるように、設計されている。温水貯蔵器２５ａは、導管２６を介して冷却液ポンプ１２の吸込み側に接続されている。導管２６は、電動で駆動可能なポンプ２７と電気的に切り替え可能な弁２８、たとえば磁気弁を有している。温水貯蔵器は、導管２９と切り替え可能な弁３０を介して補償容器２３に接続されている。   Also in this structure, the hot water reservoir 25a is provided, and the volume thereof is designed so as to be able to accommodate all the amount of the coolant existing in the coolant circulation circuit. The hot water reservoir 25 a is connected to the suction side of the coolant pump 12 through a conduit 26. The conduit 26 has an electrically driveable pump 27 and an electrically switchable valve 28, such as a magnetic valve. The hot water reservoir is connected to the compensation vessel 23 via a conduit 29 and a switchable valve 30.

温水貯蔵器２５ａと、室内暖房用熱交換器およびトランスミッションオイル用熱交換器３３へ通じる導管３１との間に、導管３６が配置されており、その導管は他の切り替え可能な弁３７と電動で駆動可能なポンプ３８を有している。導管３１内には、内燃機関１０への還流を阻止する、図示されていない戻り止め弁が設けられている。   A conduit 36 is arranged between the hot water reservoir 25a and a conduit 31 leading to a heat exchanger 33 for indoor heating and a heat exchanger 33 for transmission oil, which conduit is electrically connected to another switchable valve 37. It has a pump 38 that can be driven. A detent valve (not shown) that prevents recirculation to the internal combustion engine 10 is provided in the conduit 31.

ポンプ２７、弁２８、３０、弁３７およびポンプ３８の駆動は、制御装置３９を介して行われる。制御装置３９は、特にこの目的のために設計された、貯蔵器システムまたは熱管理のための制御装置あるいはエンジン制御装置とすることができる。この制御装置３９は、制御弁３２も駆動し、その制御弁は車両の室内暖房用熱交換器への供給を制御する。   The drive of the pump 27, the valves 28 and 30, the valve 37 and the pump 38 is performed via a control device 39. The controller 39 may be a reservoir system or a controller for thermal management or an engine controller designed specifically for this purpose. The control device 39 also drives the control valve 32, which controls the supply to the heat exchanger for indoor heating of the vehicle.

内燃機関１０が停止した場合に、制御装置３９はポンプ２７をスイッチＯＮして、弁２８と３０を開放する。冷却液は、実際には完全に、温水貯蔵器２５ａ内へポンプアップされ、冷却液循環回路は空にされる。この冷却液循環回路内へ、導管２２を介して補償容器２３から空気が流入する。温水貯蔵器２５ａ内に存在していた空気は、弁３０と導管２９を介して補償容器２３内へ流入する。   When the internal combustion engine 10 is stopped, the control device 39 switches on the pump 27 and opens the valves 28 and 30. The coolant is actually completely pumped into the hot water reservoir 25a and the coolant circulation circuit is emptied. Air flows from the compensation container 23 into the coolant circulation circuit via the conduit 22. Air existing in the hot water reservoir 25 a flows into the compensation container 23 through the valve 30 and the conduit 29.

内燃機関をＯＮにする場合に、冷却液循環回路への冷却液の還流は、図１を用いてすでに説明したように行うことができる。しかしまた、段階を設けて、たとえば制御装置３９によってまず弁３７を開放し、ポンプをスイッチＯＮして、まず熱い冷却液が熱交換器２０と熱交換器３３内へポンピングされ、そこから内燃機関１０へ流れるようにすることも、可能である。弁３０は開放されているので、温水貯蔵器２５ａ内へ空気が流入することができる。弁２８は、遅れて開放することができるので、内燃機関１０がＯＮにされた後に遅延をもって冷却液が温水貯蔵器２５ａから内燃機関１０内へ、そしてそこからクーラー内へポンピングされる。   When the internal combustion engine is turned on, the coolant can be recirculated to the coolant circulation circuit as already described with reference to FIG. However, a stage is also provided, for example by the control device 39 first opening the valve 37 and switching on the pump so that hot coolant is first pumped into the heat exchanger 20 and the heat exchanger 33 from which the internal combustion engine It is also possible to flow to 10. Since the valve 30 is opened, air can flow into the hot water reservoir 25a. Since the valve 28 can be opened late, the coolant is pumped from the hot water reservoir 25a into the internal combustion engine 10 and from there into the cooler with a delay after the internal combustion engine 10 is turned on.

内燃機関を温度調節することができるようにするために、本発明に基づく方法に加えて、あるいは本発明に基づく方法の代わりに、内燃機関がＯＦＦにされた場合に全量のエンジンオイルがホットオイル貯蔵器内へ汲み込まれ、そのホットオイル貯蔵器はそれまでに空になっており、すなわち空気を有しているようにすることができる。その場合には内燃機関の始動の際に、エンジンオイルが空のオイル循環回路内へ、すなわちオイルクーラーとオイル冷却通路内へ戻るようにポンピングされる。オイルクーラーは、空気または好ましくは内燃機関の冷却液を供給される熱交換器とすることができる。ホットオイル貯蔵器は、オイル循環回路の分岐内に配置されて、電動駆動されるオイルポンプを有する。分岐は、好ましくはオイル循環回路に属するオイルポンプの吸込み側に接続される。ホットオイル貯蔵器は、オイル循環回路のオイルポンプよりも高い位置に配置されると、理にかなっている。   In order to be able to regulate the temperature of the internal combustion engine, in addition to or instead of the method according to the invention, the entire amount of engine oil is hot oil when the internal combustion engine is switched off. Pumped into a reservoir, the hot oil reservoir may have been previously emptied, i.e. have air. In that case, when the internal combustion engine is started, the engine oil is pumped back into the empty oil circulation circuit, that is, into the oil cooler and the oil cooling passage. The oil cooler can be a heat exchanger which is supplied with air or preferably a coolant of the internal combustion engine. The hot oil reservoir has an oil pump which is disposed in the branch of the oil circulation circuit and is electrically driven. The branch is preferably connected to the suction side of the oil pump belonging to the oil circulation circuit. The hot oil reservoir makes sense when placed higher than the oil pump in the oil circulation circuit.

本発明に基づく冷却液システムの概略図である。1 is a schematic view of a coolant system according to the present invention. 冷却循環回路内にさらに他の熱交換器を有する冷却液システムの概略図である。It is the schematic of the cooling fluid system which has another heat exchanger in a cooling circuit.

符号の説明Explanation of symbols

１０ 内燃機関
１１ ラジエータ
１２ 冷却液ポンプ
１３、１４、１７、１９、２２、２４、２６、２９、３１、３６ 導管
１５ バイパス導管
１６ サーモスタット弁
１８、２４ 還流導管
２０ 熱交換器
２３ 補償容器
２５、２５ａ 温水貯蔵器
２７，３８ （電動）ポンプ
２８ 弁
３０ 弁
３２ 制御弁
３３ トランスミッションオイル用熱交換器
３４ オートマチックトランスミッション
３５ エンジンオイル用熱交換器
３９ 制御装置 DESCRIPTION OF SYMBOLS 10 Internal combustion engine 11 Radiator 12 Coolant pump 13, 14, 17, 19, 22, 24, 26, 29, 31, 36 Pipe 15 Bypass pipe 16 Thermostat valve 18, 24 Reflux pipe 20 Heat exchanger 23 Compensation vessel 25, 25a Hot water storage 27, 38 (Electric) pump 28 Valve 30 Valve 32 Control valve 33 Heat exchanger for transmission oil 34 Automatic transmission 35 Heat exchanger for engine oil 39 Control device

Claims (14)

冷却液のための冷却液循環回路を備えた冷却システムが付設されている自動車の内燃機関（１０）の温度調節方法であって、
内燃機関（１０）がＯＦＦにされた場合に、ほぼ全部の量の冷却液が冷却液循環回路から、それまでに空にされている温水貯蔵器（２５、２５ａ）内へ給送されて、内燃機関（１０）の始動時に、前記温水貯蔵器から冷却液が再び冷却液循環回路内へ戻されることを特徴とする方法。 A method for adjusting the temperature of an internal combustion engine (10) of an automobile, to which a cooling system having a coolant circulation circuit for coolant is attached,
When the internal combustion engine (10) is turned off, almost the entire amount of coolant is fed from the coolant circulation circuit into the hot water reservoir (25, 25a) that has been emptied so far, A method wherein the coolant is returned from the hot water reservoir back into the coolant circulation circuit when the internal combustion engine (10) is started. 温水貯蔵器（２５、２５ａ）内への冷却液の給送が、内燃機関（１０）のＯＦＦ後に時間遅延されて実施されることを特徴とする請求項１に記載の方法。   2. The method according to claim 1, wherein the feeding of the coolant into the hot water reservoir is performed with a time delay after the internal combustion engine is turned off. 冷却循環回路へ冷却液を戻すことが、内燃機関（１０）の始動後に時間遅延されて実施されることを特徴とする請求項１または２に記載の方法。   The method according to claim 1 or 2, characterized in that the return of the coolant to the cooling circuit is carried out with a time delay after the start of the internal combustion engine (10). 冷却液循環回路内に、室内暖房用熱交換器および／またはトランスミッションオイル用熱交換器および／またはエンジンオイル用熱交換器が配置されており、かつ
冷却液循環回路全体から冷却液が温水貯蔵器（２５、２５ａ）内へ給送されることを特徴とする請求項１から３のいずれか１項に記載の方法。 A heat exchanger for room heating and / or a heat exchanger for transmission oil and / or a heat exchanger for engine oil are arranged in the coolant circulation circuit, and the coolant is supplied from the entire coolant circulation circuit to the hot water storage device. The method according to any one of claims 1 to 3, characterized in that it is fed into (25, 25a). 温水貯蔵器（２５、２５ａ）から冷却液が２つ以上の箇所において同時におよび／または時間遅延して供給されることを特徴とする請求項１から４のいずれか１項に記載の方法。   5. The method according to claim 1, wherein the coolant is supplied from the hot water reservoir (25, 25a) at two or more points simultaneously and / or with a time delay. 内燃機関（１０）とラジエータ（１１）の間に冷却液のための冷却液循環回路を有している、内燃機関（１０）のための冷却システムであって、
冷却液循環回路から分岐した回路内に温水貯蔵器（２５、２５ａ）が配置され、
温水貯蔵器（２５、２５ａ）は、少なくとも冷却液循環回路の容積にほぼ相当する容積を有し、内燃機関（１０）がＯＦＦにされた場合に冷却液を冷却液循環回路から温水貯蔵器（２５、２５ａ）内へ給送するための手段（２７、２８）と、内燃機関（１０）がＯＮにされた場合に冷却液を冷却液循環回路内へ戻すための手段（１２、３７、３８）とを備えている、
ことを特徴とする冷却システム。 A cooling system for an internal combustion engine (10) having a coolant circulation circuit for the coolant between the internal combustion engine (10) and the radiator (11),
A hot water reservoir (25, 25a) is arranged in a circuit branched from the coolant circulation circuit,
The hot water reservoir (25, 25a) has a volume at least approximately equivalent to the volume of the coolant circulation circuit, and when the internal combustion engine (10) is turned off, the coolant is sent from the coolant circulation circuit to the hot water reservoir ( 25, 25a) means for feeding (27, 28) and means for returning the coolant into the coolant circulation circuit when the internal combustion engine (10) is turned on (12, 37, 38). )
A cooling system characterized by that. 温水貯蔵器（２５、２５ａ）へ通じる導管（２６）内に、電気的に駆動可能なポンプ（２７）が配置されていることを特徴とする請求項６に記載の冷却システム。   7. Cooling system according to claim 6, characterized in that an electrically drivable pump (27) is arranged in the conduit (26) leading to the hot water reservoir (25, 25a). 温水貯蔵器（２５、２５ａ）の前段に、電気的に切り替え可能な弁（２８）が接続されていることを特徴とする請求項６または７に記載の冷却システム。   The cooling system according to claim 6 or 7, characterized in that an electrically switchable valve (28) is connected upstream of the hot water reservoir (25, 25a). 温水貯蔵器（２５、２５ａ）へ通じる導管（２６）が、内燃機関（１０）へ冷却液を給送する冷却液ポンプ（１２）の吸込み側において、冷却液循環回路に接続されていることを特徴とする請求項６から８のいずれか１項に記載の冷却システム。   The conduit (26) leading to the hot water reservoir (25, 25a) is connected to the coolant circulation circuit on the suction side of the coolant pump (12) for feeding coolant to the internal combustion engine (10). 9. A cooling system according to any one of claims 6 to 8, characterized in that: 温水貯蔵器（２５、２５ａ）は、冷却ポンプ（１２）よりも高い場所に配置されていることを特徴とする請求項６から９のいずれか１項に記載の冷却システム。   The cooling system according to any one of claims 6 to 9, characterized in that the hot water reservoir (25, 25a) is arranged higher than the cooling pump (12). 温水貯蔵器（２５、２５ａ）および冷却液循環回路の最も高い箇所が、補償容器（２３）に接続されていることを特徴とする請求項６から１０のいずれか１項に記載の冷却システム。   11. Cooling system according to any one of claims 6 to 10, characterized in that the hot water reservoir (25, 25a) and the highest point of the coolant circulation circuit are connected to a compensation vessel (23). 温水貯蔵器（２５、２５ａ）を補償容器（２３）と接続する導管（２９）内に、電気的に切り替え可能な弁（３０）が配置されていることを特徴とする請求項６から１１のいずれか１項に記載の冷却システム。   12. An electrically switchable valve (30) is arranged in the conduit (29) connecting the hot water reservoir (25, 25a) with the compensation vessel (23). The cooling system according to any one of claims. 温水貯蔵器（２５、２５ａ）から、電動のポンプ（３８）と切り替え可能な弁（２７）を有する１本または複数本の導管が、補助装置の１つまたは複数の熱交換器へ通じていることを特徴とする請求項６から１２のいずれか１項に記載の冷却システム。   From the hot water reservoir (25, 25a), one or more conduits with an electric pump (38) and a switchable valve (27) lead to one or more heat exchangers of the auxiliary device. The cooling system according to any one of claims 6 to 12, characterized in that: 少なくとも２つのチャンバを有する温水貯蔵器（２５、２５ａ）が設けられており、前記チャンバが選択的に冷却液で充填され、かつ／または空にすることができることを特徴とする請求項６から１３のいずれか１項に記載の冷却システム。   A hot water reservoir (25, 25a) having at least two chambers is provided, wherein the chambers can be selectively filled with cooling liquid and / or emptied. The cooling system according to any one of the above.
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