WO2018020776A1 - Système d'alimentation en huile - Google Patents

Système d'alimentation en huile Download PDF

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Publication number
WO2018020776A1
WO2018020776A1 PCT/JP2017/017875 JP2017017875W WO2018020776A1 WO 2018020776 A1 WO2018020776 A1 WO 2018020776A1 JP 2017017875 W JP2017017875 W JP 2017017875W WO 2018020776 A1 WO2018020776 A1 WO 2018020776A1
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WO
WIPO (PCT)
Prior art keywords
engine
oil
heat exchanger
air
supply system
Prior art date
Application number
PCT/JP2017/017875
Other languages
English (en)
Japanese (ja)
Inventor
功 畔柳
位司 安田
幸一 原田
則義 宮嶋
國方　裕平
真樹 原田
雄史 川口
吉章 山本
孝博 宇野
Original Assignee
株式会社デンソー
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to JP2018529370A priority Critical patent/JP6601564B2/ja
Priority to CN201780038506.3A priority patent/CN109312848B/zh
Publication of WO2018020776A1 publication Critical patent/WO2018020776A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • 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
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • 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
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/10—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • 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
    • 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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • F16H59/72—Inputs being a function of gearing status dependent on oil characteristics, e.g. temperature, viscosity
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • This disclosure relates to an oil supply system that heats or cools automatic transmission oil (hereinafter referred to as “AT oil”) used in an automatic transmission of a vehicle.
  • AT oil automatic transmission oil
  • an oil supply system that heats or cools AT oil used in an automatic transmission of a vehicle.
  • the oil supply system cools AT oil to an appropriate temperature during normal operation of the engine, maintains the viscosity of AT oil, and prevents deterioration.
  • the conventional oil supply system heats AT oil using engine cooling water during engine warm-up operation, thereby reducing the viscosity of AT oil.
  • the energy consumption of the oil pump for circulating the AT oil is reduced, and the frictional resistance of the gear mechanism of the automatic transmission is reduced. Therefore, the oil supply system can improve fuel efficiency during engine warm-up operation.
  • the engine system described in Patent Document 1 described above can warm the engine and engine oil using air compressed by a compressor during engine warm-up operation, but does not heat AT oil. Absent.
  • This disclosure is intended to provide an oil supply system capable of heating AT oil without using engine cooling water during engine warm-up operation.
  • an oil supply system for heating or cooling AT oil used in an automatic transmission connected to an engine includes: An oil pump that discharges AT oil pumped from the oil pan; Piping for supplying AT oil discharged from the oil pump to each part of the hydraulic mechanism of the automatic transmission, or discharging AT oil from each part of the hydraulic mechanism; A heat exchanger is provided in a place where the air that has been heated during engine warm-up operation flows in the engine room, and performs heat exchange between the AT oil supplied through the pipe and the heated air.
  • the heat exchanger can heat the AT oil by using the air heated by the engine warm-up operation without using the engine cooling water during the engine warm-up operation.
  • the viscosity of the AT oil is reduced, so that the energy consumption of the oil pump for circulating the AT oil is reduced and the frictional resistance of the gear mechanism of the automatic transmission is reduced. Therefore, this oil supply system can improve fuel efficiency during engine warm-up operation.
  • the oil supply system 1 of the present embodiment supplies AT oil to various hydraulic mechanisms provided in the automatic transmission 2, heats AT oil when the engine 3 is warmed up, and supplies AT oil during normal operation of the engine 3. It can be cooled.
  • Fig. 1 is a schematic diagram inside the engine room.
  • the engine 3 illustrated in FIG. 1 is, for example, a reciprocating engine.
  • the engine 3 draws a mixture of air and fuel from a suction passage 4 into a cylinder (not shown) by reciprocating movement of a piston (not shown), compresses and burns the mixture, and then burns the mixture.
  • the generated exhaust gas is discharged from the exhaust passage 5.
  • the engine 3 can obtain torque by converting the reciprocating motion of the piston into a rotational motion by a crankshaft (not shown).
  • the engine 3 of this embodiment includes a supercharger.
  • the supercharger has a turbine 6 provided in the exhaust passage 5 of the engine 3 and a compressor 7 provided in the intake passage 4.
  • the supercharger rotates the compressor 7 by the torque of the turbine 6 rotated by the flow of exhaust gas, compresses the air in the intake passage 4 and supplies the compressed air to the engine 3.
  • a water-cooled intercooler 8 and a throttle valve 9 are provided on the engine 3 side from the compressor 7.
  • the water-cooled intercooler 8 increases the combustion efficiency of the engine 3 by cooling the high-temperature and high-pressure supercharged air compressed by the compressor 7 and increasing the air density.
  • the throttle valve 9 adjusts the amount of intake air taken into the engine 3.
  • the water jacket 10, the radiator 11, the water pump 12, the thermostat 13, and the water-cooled heat exchanger 23 provided in the engine main body and the engine head are connected by a pipe 15 or the like to constitute a cooling device.
  • a fan 16 is provided on the side of the radiator 11 on the engine 3 side.
  • the water pump 12 is driven by torque transmitted from the crankshaft of the engine 3.
  • the cooling water circulates through the cooling device.
  • the cooling water absorbs heat from the engine 3 when flowing through the water jacket 10, thereby cooling the engine 3 and radiating heat to the air when flowing through the radiator 11.
  • the cooling water and the AT oil exchange heat with the water-cooled heat exchanger 23 to cool the AT oil.
  • the automatic transmission 2 is connected to the crankshaft of the engine 3.
  • the automatic transmission 2 has a function of automatically switching the torque and the rotational speed output from the engine 3 according to the rotational speed and load of the engine 3 and transmitting them to the drive wheel side.
  • the automatic transmission 2 has various hydraulic mechanisms such as a torque converter and a gear mechanism (not shown).
  • the oil supply system 1 of this embodiment includes an oil pump 20, a pipe 21 connected to the oil pump 20, and two heat exchangers 22 and 23 connected by the pipe 21.
  • the oil pump 20 pumps up AT oil from the oil pan 24 of the automatic transmission 2 and discharges the AT oil to a pipe 21 connected to a hydraulic mechanism.
  • the pipe 21 supplies AT oil to each part of the hydraulic mechanism of the automatic transmission 2.
  • the pipe 21 discharges AT oil from each part of the hydraulic mechanism.
  • Two heat exchangers 22 and 23 are connected in series to the pipe 21.
  • the first heat exchanger 22 is an air-cooled heat exchanger installed in the bypass passage 25.
  • the first heat exchanger 22 will be referred to as a bypass passage heat exchanger 22.
  • the bypass passage 25 connects a portion of the intake passage 4 closer to the engine 3 than the compressor 7 and a portion of the intake passage 4 opposite to the engine 3 with respect to the compressor 7.
  • a switching valve 26 is provided in the bypass passage 25.
  • the switching valve 26 can switch between a communication state and a cutoff state between a portion of the intake passage 4 closer to the engine 3 than the compressor 7 and the bypass passage 25.
  • the switching valve 26 can also adjust the flow-path cross-sectional area of the bypass passage 25 of the site
  • bypass passage 25 provided with the bypass passage heat exchanger 22 is a place where the temperature of the air rises during the warm-up operation of the engine 3 in the engine room.
  • the bypass passage heat exchanger 22 can exchange heat between the AT oil supplied through the pipe 21 and the heated air flowing through the bypass passage 25.
  • the second heat exchanger 23 is a water-cooled heat exchanger 23 that constitutes the above-described cooling device.
  • This water-cooled heat exchanger 23 exchanges heat between the AT oil supplied through the pipe 21 and the cooling water of the engine 3 during normal operation of the engine 3, so that the AT oil has a temperature suitable for use of the hydraulic mechanism. It is possible to cool down.
  • the switching valve 26 provided in the bypass passage 25 is opened, and the portion of the intake passage 4 closer to the engine 3 than the compressor 7 communicates with the bypass passage 25.
  • a part of the air compressed by the compressor 7 and heated from the portion of the intake passage 4 closer to the engine 3 than the compressor 7 to the bypass passage 25 flows. Therefore, heat exchange between the heated air flowing through the bypass passage 25 and the AT oil is performed by the bypass passage heat exchanger 22, and the AT oil is heated. As a result, the viscosity of the AT oil decreases. Therefore, the energy consumed by the oil pump 20 during the warm-up operation of the engine 3 is reduced, and the frictional resistance of the gear mechanism of the automatic transmission 2 is reduced.
  • the switching valve 26 adjusts the flow passage cross-sectional area of the bypass passage 25. It is also possible to reduce the flow rate of the air flowing through the bypass passage 25. Thereby, the heating amount of AT oil by the bypass passage heat exchanger 22 can be adjusted.
  • the switching valve 26 provided in the bypass passage 25 is closed, and the inflow of air from the intake passage 4 to the bypass passage 25 is blocked. Thereby, the temperature rise of the AT oil flowing through the bypass passage heat exchanger 22 is prevented.
  • the oil supply system 1 according to the first embodiment described above has the following operational effects.
  • bypass passage heat exchanger 22 is installed in a place where air that has been heated during the warm-up operation of the engine 3 flows in the engine room. Heat exchange with the air.
  • the bypass passage heat exchanger 22 can heat the AT oil by using the air heated by the warm-up operation of the engine 3 without using the engine coolant during the warm-up operation of the engine 3. Is possible.
  • the viscosity of the AT oil is reduced, so that the energy consumption of the oil pump 20 is reduced and the frictional resistance of the gear mechanism of the automatic transmission 2 is reduced. Therefore, the oil supply system 1 can improve the fuel efficiency when the engine 3 is warmed up.
  • bypass passage heat exchanger 22 is provided in the passage through which the air compressed by the compressor 7 flows as a place where the temperature of the engine 3 is increased during the warm-up operation of the engine 3.
  • the bypass passage heat exchanger 22 can heat the AT oil using the heat of the air.
  • the oil supply system 1 includes a switching valve 26 that switches between a communication state and a blocking state between the intake passage 4 and the bypass passage 25 and adjusts a flow passage cross-sectional area of the bypass passage 25. .
  • the switching valve 26 blocks the inflow of air from the intake passage 4 to the bypass passage 25, thereby preventing an increase in the temperature of the AT oil flowing through the bypass passage heat exchanger 22. It is possible. Therefore, it is possible to prevent the AT oil from being deteriorated due to the temperature rise.
  • bypass passage heat exchanger 22 and the water-cooled heat exchanger 23 are connected in series by the pipe 21.
  • the oil supply system 1 cools the AT oil by the water-cooled heat exchanger 23 and circulates the AT oil in the bypass passage heat exchanger 22 to increase the temperature.
  • the deterioration of AT oil can be prevented.
  • the bypass passage 25 has an opening 27 through which outside air can be introduced.
  • the switching valve 28 of the second embodiment is a door type switching valve 28 provided in the vicinity of the opening 27.
  • the switching valve 28 switches a communication state and a blocking state between a portion of the intake passage 4 closer to the engine 3 than the compressor 7 and the bypass passage 25, and a communication state and a blocking state between the space outside the opening 27 and the bypass passage 25. It is possible to switch states.
  • a door-type switching valve 28 that is an example of the switching valve 28 is referred to as a switching door 28.
  • the switching valve 28 is not limited to a door type, and various types such as a slide type or a rotary type can be adopted.
  • the switching door 28 provided in the bypass passage 25 communicates the intake passage 4 and the bypass passage 25, and the space outside the opening 27 and the bypass passage 25. Block the air flow between them.
  • the bypass passage heat exchanger 22 exchanges heat between the heated air flowing through the bypass passage 25 and the AT oil, thereby heating the AT oil.
  • the switching door 28 provided in the bypass passage 25 blocks the inflow of air from the intake passage 4 to the bypass passage 25, and the space outside the opening 27. It communicates with the bypass passage 25. As a result, the outside air is introduced from the opening 27 into the bypass passage 25 as indicated by an arrow 101. Therefore, in the bypass passage heat exchanger 22, heat exchange between the outside air and the AT oil is performed, and the AT oil is cooled to a temperature suitable for use of the hydraulic mechanism.
  • the bypass passage heat exchanger 22 can cool the AT oil by the air flowing through the bypass passage 25 during normal operation of the engine 3. it can.
  • the oil supply system 1 of the third embodiment does not include a bypass passage heat exchanger 22 and a water-cooled heat exchanger 23. Instead, the oil supply system 1 includes an air-cooled heat exchanger 29 provided in the engine room. This heat exchanger 29 will be referred to as an engine room heat exchanger 29.
  • the fan 16 provided on the side of the engine 3 of the radiator 11 can be switched between a forward rotation operation and a reverse rotation operation.
  • a normal rotation operation air flows from the radiator 11 side to the engine 3 side as indicated by a broken arrow 102.
  • the fan 16 performs the reverse rotation operation air flows from the engine 3 side or the exhaust passage 5 side to the radiator 11 side as indicated by a solid arrow 103.
  • the engine room heat exchanger 29 is provided in the engine room at a place where air flows when the fan 16 rotates forward and backward.
  • the engine room heat exchanger 29 is provided in a place where air flows in the forward rotation operation and the reverse rotation operation of the fan 16 in the engine room.
  • the oil supply system 1 causes the fan 16 to reversely rotate during the warm-up operation of the engine 3, and uses the heat of the air heated by the engine 3 or the exhaust passage 5 to cause the AT oil to be discharged by the engine room heat exchanger 29. Can be heated.
  • the oil supply system 1 can cool the AT oil by the engine room heat exchanger 29 by using the air introduced from outside the vehicle by causing the fan 16 to rotate forward during normal operation of the engine 3.
  • the water-cooled heat exchanger 23 described in the first and second embodiments may be connected in series with the engine room heat exchanger 29.
  • the oil supply system 1 of the fourth embodiment includes a bypass passage heat exchanger 22 described in the first and second embodiments, and an engine room heat exchanger 29 described in the third embodiment. It has.
  • the bypass passage heat exchanger 22 and the engine room heat exchanger 29 are connected in series by a pipe 21.
  • the fan 16 performs a reverse rotation operation.
  • air flows from the engine 3 side or the exhaust passage 5 side through the engine room heat exchanger 29 to the radiator 11 side. Therefore, the engine room heat exchanger 29 exchanges heat between the heated air flowing in the engine room and the AT oil, and the AT oil is heated. As a result, the viscosity of the AT oil decreases. Therefore, the energy consumed by the oil pump 20 during the warm-up operation of the engine 3 is reduced, and the frictional resistance of the gear mechanism of the automatic transmission 2 is reduced.
  • the fan 16 performs forward rotation.
  • air flows from the outside of the vehicle through the radiator 11 and the engine room heat exchanger 29 to the engine 3 side. Therefore, heat exchange between the air introduced into the engine room from outside the vehicle and the AT oil is performed by the engine room heat exchanger 29, and the AT oil is cooled to a temperature suitable for use of the hydraulic mechanism.
  • the water-cooled heat exchanger 23 described in the first and second embodiments is connected in series with the bypass passage heat exchanger 22 and the engine room heat exchanger 29. May be.
  • the oil supply system 1 includes the switching door 28 described in the second embodiment in the bypass passage 25 with respect to the configuration described in the fourth embodiment. .
  • the fan 16 performs a reverse rotation operation.
  • air flows from the engine 3 side or the exhaust passage 5 side through the engine room heat exchanger 29 to the radiator 11 side. Therefore, the engine room heat exchanger 29 exchanges heat between the heated air flowing in the engine room and the AT oil, and the AT oil is heated. As a result, the viscosity of the AT oil decreases. Therefore, the energy consumed by the oil pump 20 during the warm-up operation of the engine 3 is reduced, and the frictional resistance of the gear mechanism of the automatic transmission 2 is reduced.
  • the fan 16 performs forward rotation.
  • air flows from the outside of the vehicle through the radiator 11 and the engine room heat exchanger 29 to the engine 3 side. Therefore, heat exchange between the air introduced into the engine room from outside the vehicle and the AT oil is performed by the engine room heat exchanger 29, and the AT oil is cooled to a temperature suitable for use of the hydraulic mechanism.
  • the water-cooled heat exchanger 23 described in the first and second embodiments is connected in series with the bypass passage heat exchanger 22 and the engine room heat exchanger 29. May be.
  • the oil supply system 1 of the sixth embodiment does not include the water-cooled heat exchanger 23 in contrast to the configuration described in the second embodiment.
  • the oil supply system 1 of the seventh embodiment includes a heat exchanger 30 provided in a portion of the intake passage 4 between the compressor 7 and the water-cooled intercooler 8.
  • This heat exchanger 30 is referred to as an intake passage heat exchanger 30.
  • air compressed by the compressor 7 and heated is supplied to a portion where the intake passage heat exchanger 30 is provided. Therefore, it can be said that the portion of the intake passage 4 where the intake passage heat exchanger 30 is provided is a place where the temperature of the air rises during the warm-up operation of the engine 3 in the engine room.
  • the intake passage heat exchanger 30 can exchange heat between the heated air flowing through the intake passage 4 and the AT oil.
  • the oil supply system 1 of the seventh embodiment includes an engine room heat exchanger 29 and a water-cooled heat exchanger 23 in addition to the intake passage heat exchanger 30.
  • the intake passage heat exchanger 30, the engine room heat exchanger 29, and the water-cooled heat exchanger 23 are connected in series by a pipe 21.
  • the fan 16 performs a reverse rotation operation.
  • air flows from the engine 3 side or the exhaust passage 5 side through the engine room heat exchanger 29 to the radiator 11 side. This air is heated by the heat released from the engine 3 or the exhaust passage 5. Therefore, the engine room heat exchanger 29 exchanges heat between the heated air flowing in the engine room and the AT oil, thereby heating the AT oil.
  • the fan 16 performs forward rotation.
  • air flows from the outside of the vehicle through the radiator 11 and the engine room heat exchanger 29 to the engine 3 side. Therefore, heat exchange between the air introduced into the engine room from outside the vehicle and the AT oil is performed by the engine room heat exchanger 29, and the AT oil is cooled to a temperature suitable for use of the hydraulic mechanism.
  • the intake passage heat exchanger 30 As described above, in the oil supply system 1 of the seventh embodiment, during normal operation of the engine 3, heat exchange between the heated air flowing through the intake passage 4 and the AT oil is performed by the intake passage heat exchanger 30. Is called. As a result, the high-temperature and high-pressure supercharged air that is compressed by the compressor 7 and flows through the intake passage 4 is cooled. Therefore, by increasing the air density of the supercharged air introduced into the engine 3, it is possible to increase the combustion efficiency of the engine 3 and improve fuel efficiency. Furthermore, according to this configuration, it is possible to cool the supercharged air flowing through the intake passage 4 by using both the intake passage heat exchanger 30 and the water-cooled intercooler 8, so that the water-cooled intercooler 8 The physique can be reduced in size.
  • the one or more heat exchangers 22, 23, 29, 30 for cooling or heating the AT oil are installed in the piping on the upstream side of the hydraulic mechanism of the automatic transmission 2.
  • it may be installed in a downstream pipe.
  • the oil supply system heats or cools AT oil used in an automatic transmission connected to an engine, and includes an oil pump. , With piping and heat exchanger.
  • the oil pump discharges AT oil pumped up from the oil pan to the pipe.
  • the pipe supplies AT oil discharged from the oil pump to each part of the hydraulic mechanism of the automatic transmission, or discharges AT oil from each part of the hydraulic mechanism.
  • the heat exchanger is provided in a place where air that has been heated during engine warm-up operation flows in the engine room, and performs heat exchange between the AT oil supplied through the piping and the heated air.
  • the engine includes a supercharger having a turbine provided in the exhaust passage of the engine and a compressor that compresses air in the intake passage with the torque of the turbine and supplies the compressed air to the engine.
  • the heat exchanger is provided in a passage through which the air compressed by the compressor flows as a place where the temperature of the air rises during the warm-up operation of the engine.
  • the heat exchanger can heat the AT oil using the heat of the air.
  • the oil supply system further includes a bypass passage and a switching valve.
  • the bypass passage connects a portion of the intake passage closer to the engine than the compressor and a portion of the intake passage closer to the compressor than the engine.
  • the switching valve switches a communication state and a blocking state between the intake passage and the bypass passage, or adjusts a flow passage cross-sectional area of the bypass passage.
  • the heat exchanger is provided in the bypass passage as a place where the temperature of the air rises during the warm-up operation of the engine, and performs heat exchange between the air flowing through the bypass passage and the AT oil.
  • this oil supply system can heat the AT oil using the heat of the air flowing through the bypass passage when the engine is warming up.
  • this oil supply system can prevent an increase in the temperature of the AT oil flowing through the heat exchanger by blocking the inflow of air from the intake passage to the bypass passage by the switching valve during normal operation of the engine. is there. Therefore, it is possible to prevent the AT oil from being deteriorated due to the temperature rise.
  • the bypass passage has an opening through which outside air can be introduced.
  • the switching valve switches a communication state and a blocking state between a portion of the intake passage closer to the engine than the compressor and the bypass passage, and switches a communication state and a blocking state between the opening and the bypass passage.
  • this oil supply system can shut off the air flow between the intake passage and the bypass passage by the switching valve, and can take outside air into the bypass passage from the opening.
  • the heat exchanger can cool AT oil with the air which flows through a bypass channel at the time of normal operation of an engine.
  • the forward rotation operation for flowing air from the radiator side to the engine side for cooling the cooling water of the engine and the reverse flow for flowing air from the engine side or the exhaust passage side to the radiator side are performed.
  • a fan that can be switched between rotating operation is further provided.
  • the heat exchanger is provided in a place where air flows during the forward rotation operation and the reverse rotation operation of the fan in the engine room as a place where the air temperature rises during the warm-up operation of the engine.
  • this oil supply system causes air to flow from the engine side or the exhaust passage side to the radiator side by the reverse rotation operation of the fan, and the heat of the air heated by the engine or the exhaust passage Can be used to heat the AT oil.
  • this oil supply system can cool AT oil using air introduced from outside the vehicle by normal rotation of the fan during normal operation of the engine.
  • bypass passage heat exchanger and the engine room heat exchanger are connected by piping.
  • this oil supply system can heat AT oil by the bypass passage heat exchanger and the engine room heat exchanger during the warm-up operation of the engine.
  • this oil supply system can cool the AT oil by the engine room heat exchanger using air introduced from outside the vehicle by the forward rotation of the fan during normal operation of the engine.
  • the heat exchanger is provided in a portion of the intake passage between the compressor and the engine as a place where the temperature of the air rises during the warm-up operation of the engine. Heat exchange with AT oil is performed.
  • the heat exchanger can heat the AT oil using the heat of the air compressed by the compressor and flowing through the intake passage.
  • the oil supply system further includes a water-cooled heat exchanger capable of cooling AT oil supplied through the piping with engine coolant.
  • the heat exchanger and the water-cooled heat exchanger are connected by piping.
  • this oil supply system cools AT oil with a water-cooled heat exchanger during normal operation of the engine, and circulates AT oil in the heat exchanger to prevent deterioration of AT oil due to temperature rise. Can be prevented.
  • the intake passage heat exchanger, the engine room heat exchanger, and the water-cooled heat exchanger are connected by piping.
  • the oil supply system can heat the AT oil by the intake passage heat exchanger and the engine room heat exchanger during the warm-up operation of the engine.
  • the oil supply system can cool the air flowing in the intake passage after being compressed by the compressor by the intake passage heat exchanger during normal operation of the engine. Thereby, while improving a fuel consumption, the intercooler attached accompanying the supercharger can be reduced in size.
  • the AT oil heated by heat exchange with the air flowing through the intake passage in the intake passage heat exchanger is cooled by the engine room heat exchanger and the water-cooled heat exchanger. Therefore, this oil supply system can cool the AT oil while cooling the air flowing through the intake passage during the normal operation of the engine.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Transportation (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • General Details Of Gearings (AREA)
  • Supercharger (AREA)
  • Control Of Transmission Device (AREA)

Abstract

Système d'alimentation en huile (1) pourvu d'une pompe à huile (20), d'une tuyauterie (21) et d'un échangeur de chaleur (22). La pompe à huile (20) rejette de l'huile AT pompée vers le haut à partir d'un carter d'huile (24). La tuyauterie (21) apporte l'huile AT rejetée de la pompe à huile (20) à un mécanisme hydraulique d'une transmission automatique (2) ou élimine l'huile AT du mécanisme hydraulique. L'échangeur de chaleur (22) est disposé dans le compartiment moteur où l'air chauffé pendant le fonctionnement du moteur chauffé (3) s'écoule et mène un échange de chaleur entre ledit air chauffé et l'huile AT apportée par l'intermédiaire de la tuyauterie (21).
PCT/JP2017/017875 2016-07-27 2017-05-11 Système d'alimentation en huile WO2018020776A1 (fr)

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KR20210047060A (ko) * 2019-10-21 2021-04-29 현대자동차주식회사 차량용 과급 시스템 및 그 제어 방법

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