WO2014132798A1 - エンジンの吸気冷却装置及び冷却方法 - Google Patents

エンジンの吸気冷却装置及び冷却方法 Download PDF

Info

Publication number
WO2014132798A1
WO2014132798A1 PCT/JP2014/053230 JP2014053230W WO2014132798A1 WO 2014132798 A1 WO2014132798 A1 WO 2014132798A1 JP 2014053230 W JP2014053230 W JP 2014053230W WO 2014132798 A1 WO2014132798 A1 WO 2014132798A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling water
engine
intake air
circuit
temperature
Prior art date
Application number
PCT/JP2014/053230
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
佳 酒川
横山　裕一
Original Assignee
カルソニックカンセイ株式会社
東京ラヂエーター製造株式会社
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 カルソニックカンセイ株式会社, 東京ラヂエーター製造株式会社 filed Critical カルソニックカンセイ株式会社
Priority to DE112014001021.9T priority Critical patent/DE112014001021T8/de
Priority to CN201480010853.1A priority patent/CN105143633A/zh
Priority to US14/770,719 priority patent/US20160003127A1/en
Publication of WO2014132798A1 publication Critical patent/WO2014132798A1/ja

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0412—Multiple heat exchangers arranged in parallel or in series
    • 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
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0437—Liquid cooled heat exchangers
    • F02B29/0443—Layout of the coolant or refrigerant circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/24—Layout, e.g. schematics with two or more coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • 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
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/182—Arrangements or mounting of liquid-to-air heat-exchangers with multiple heat-exchangers
    • 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
    • F01P2060/02—Intercooler
    • 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
    • F01P2060/16—Outlet manifold
    • 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

  • the present invention relates to an intake air cooling device provided in an engine with a supercharger.
  • An engine with a supercharger that supercharges intake air by exhausting the engine is generally used.
  • the intake air temperature becomes high.
  • an EGR system that recirculates exhaust gas to the intake side is provided, the intake air temperature may further increase. If the intake air temperature becomes high, the fuel efficiency may decrease.
  • a cooling device that lowers the temperature of the supercharged intake air.
  • the cooling device circulates, for example, engine cooling water in the intake passage, and reduces the intake air temperature with the cooling water.
  • US20080066697A includes a second radiator in a second cooling water circuit branched from a part of the cooling water circuit of the engine, and intake air to the engine by the cooling water having a low temperature by the second radiator.
  • An internal combustion engine cooling device for reducing the intake air temperature is described.
  • cooling water temperature is lowered to lower the intake air temperature, low-temperature cooling water flows into the engine.
  • low-temperature coolant temperature flows in when the engine is warmed up, the coolant temperature falls inside the engine, and the engine warm-up is delayed. If the engine warm-up is delayed, there is a problem that the fuel efficiency of the engine decreases.
  • the present invention has been made in view of such problems, and provides an intake air cooling device for an engine that can improve a delay in warming up the engine while including a cooling device that cools intake air of the engine. For the purpose.
  • the cooling water circuit has a first cooling water circuit and a second cooling water circuit, and is cooled by a first intake air cooling device that cools intake air using the cooling water of the first cooling water circuit, and a first exhaust cooling device. And a second intake air cooling device for further cooling the intake air with the cooling water of the second cooling water circuit, wherein the first cooling water circuit distributes the cooling water from the engine through the first intake air cooling device.
  • the second cooling water circuit returns the cooling water from the engine again to the engine through the second intake air cooling device, and returns to the engine from the engine to the first intake air cooling device. From the second intake air cooling device A cooling water towards the engine Te, with a heat exchanger for exchanging heat between the.
  • FIG. 1 is an explanatory diagram of a cooling device centering on an engine according to a first embodiment of the present invention.
  • FIG. 2 is an explanatory diagram of the cooling device centering on the engine of the second embodiment of the present invention.
  • FIG. 3 is a flowchart of processing executed by the controller according to the second embodiment of this invention.
  • FIG. 4 is an explanatory diagram of a cooling device centering on an engine according to a third embodiment of the present invention.
  • FIG. 1 is an explanatory diagram of a cooling device 1 centering on an engine 10 according to a first embodiment of the present invention.
  • the cooling device 1 is mounted on a vehicle, for example, and includes an engine 10 that is a drive source of the vehicle and a supercharger (turbine) 18, and the temperature of the supercharged intake air is reduced to cooling water. (Coolant) is used for proper cooling.
  • the thick arrow indicates the high temperature side cooling water circuit 31
  • the thin arrow indicates the low temperature side cooling water circuit 32
  • the dotted line indicates the flow of exhaust gas in the exhaust pipe 16
  • the alternate long and short dash line indicates the flow of intake air in the intake pipe 14.
  • the cooling device 1 includes an engine 10 and a cooling water circuit 30 for circulating cooling water of the engine 10.
  • a cooling water flow path 11 through which cooling water flows is formed inside the engine 10.
  • the cooling water channel 11 communicates with the cooling water circuit 30.
  • the cooling water passage 11 is provided with a water pump (W / P) 12 and a thermostat (T / S) 13.
  • the water pump 12 circulates the cooling water through the cooling water passage 11 and the cooling water circuit 30.
  • the thermostat 13 bypasses the radiator 41 when the temperature of the cooling water is low, and lowers the cooling water temperature through the radiator 41 when the temperature of the cooling water is high.
  • the intake pipe 14 and the exhaust pipe 16 communicate with the engine 10.
  • the intake pipe 14 is supercharged by the turbine 18.
  • the temperature of the supercharged intake air is reduced by the high temperature side intercooler (first intake air cooling device) 71 and the low temperature side intercooler (second intake air cooling device) 72, and the intake air whose temperature has been reduced is sent to the engine 10.
  • the exhaust pipe 16 discharges the exhaust of the engine 10 via the turbine 18.
  • the exhaust gas rotates the turbine 18, and the intake air in the intake pipe 14 is supercharged by the rotation of the turbine 18.
  • the engine 10 is provided with a fan 19.
  • the fan 19 blows air to the radiator 41 and the sub radiator 42, so that the cooling of the radiator 41 and the sub radiator 42 is promoted.
  • the EGR circuit 20 branches from the exhaust pipe 16.
  • the EGR circuit 20 constitutes an exhaust gas recirculation device (EGR) that recirculates a part of the exhaust gas to the intake air.
  • the EGR circuit 20 includes a first EGR cooler (first exhaust cooling device) 21 on the high temperature side and a second EGR cooler (second exhaust cooling on the same high temperature side, which is located downstream of the first EGR cooler 21. Device) 22, and communicates with the intake pipe 14 via the EGR valve 23.
  • the oxygen concentration in the combustion chamber of the engine 10 can be lowered to lower the combustion temperature, and the generation of oxides such as NOx is suppressed.
  • cooling water flows through the high temperature side intercooler 71 and the low temperature side intercooler 72, respectively, and the temperature of the intake air supercharged by the turbine 18 is lowered. Since the intake air temperature becomes high in some cases and the temperature difference with the cooling water is large, the intake air temperature is lowered in two stages of the high temperature side intercooler 71 and the low temperature side intercooler 72. The intake air whose temperature has been lowered by the high temperature side intercooler 71 is further lowered by the low temperature side intercooler 72.
  • an EGR valve 23 is provided downstream of the high temperature side intercooler 71 and the low temperature side intercooler 72. The EGR valve 23 controls the amount of exhaust gas recirculated to the intake pipe 14 via the EGR circuit 20.
  • the cooling water circuit 30 includes a high temperature side cooling water circuit (first cooling water circuit) 31 and a low temperature side cooling water circuit (second cooling water circuit) 32.
  • the high temperature side cooling water circuit 31 is also located at the downstream side of the radiator (first radiator) 41, the high temperature side first EGR cooler 21 and the first EGR cooler 21 in addition to the cooling water flow path 11 of the engine 10. It is constituted by a cooling water circuit passing through the second EGR cooler 22 on the side.
  • the cooling water sent from the water pump 12 of the engine 10 circulates through the cooling water flow path 11 of the engine and returns to the cooling water flow path of the engine 10 again via the radiator 41. .
  • a part of the cooling water delivered from the water pump 12 exits the engine 10 and is located on the downstream side of the first EGR cooler 21 and the first EGR cooler 21 on the high temperature side, and the second EGR on the same high temperature side. It returns to the cooling water flow path 11 of the engine 10 again via the cooler 22.
  • a part of the cooling water delivered from the water pump 12 exits the engine 10 and returns to the cooling water flow path 11 of the engine 10 again via the heat exchanger 76 and the high temperature side intercooler 71.
  • the low temperature side cooling water circuit 32 includes a thermostat 44, a sub radiator (second radiator) 42, a low temperature side intercooler 72, and a cooling water circuit via a heat exchanger 76.
  • the cooling water sent from the water pump of the engine 10 leaves the engine 10 and is sent to the low temperature side intercooler 72 via the thermostat 44 and the sub radiator 42.
  • the cooling water exiting the low temperature side intercooler 72 returns to the cooling water flow path 11 of the engine 10 again through the heat exchanger 76.
  • the thermostat 44 bypasses the sub radiator 42 when the temperature of the cooling water in the low temperature side cooling water circuit 32 is low, and prevents the cooling water temperature from further decreasing.
  • the low temperature side cooling water circuit 32 is configured such that the cooling water passes through the sub radiator 42 so that the cooling water having a temperature lower than that of the high temperature side cooling water circuit 31 flows.
  • the heat exchanger 76 performs heat exchange between the cooling water output from the engine 10 in the high temperature side cooling water circuit 31 and the cooling water output from the low temperature side intercooler 72 in the low temperature side cooling water circuit 32.
  • the heat exchanger 76 has, for example, a double-pipe structure, and performs heat exchange by configuring the cooling water of the high temperature side cooling water circuit 31 and the cooling water of the low temperature side cooling water circuit 32 to face each other. Do.
  • the cooling device 1 of the first embodiment of the present invention operates as follows with the above-described configuration.
  • the cooling water is circulated through the cooling water passage 11 by the water pump 12. At this time, when the cooling water temperature is low, the thermostat 13 is switched to bypass the radiator 41. With this configuration, the cooling water is heated by the operation of the engine 10, and the cooling water temperature rises.
  • a part of the cooling water flowing through the cooling water flow path 11 flows into the high temperature side cooling water circuit 31 and is located on the downstream side of the first EGR cooler 21 and the first EGR cooler 21 on the high temperature side. Return to the cooling water flow path 11 via the EGR cooler 22. A part of the cooling water in the high temperature side cooling water circuit 31 returns to the cooling water flow path 11 via the high temperature side intercooler 71.
  • the high-temperature side cooling water circuit 31 is configured so that the temperature of the cooling water does not decrease by being in contact with the high-temperature exhaust gas.
  • the drop of the temperature of the cooling water can be suppressed by contacting the supercharged high temperature intake air.
  • a part of the cooling water flowing through the cooling water flow path 11 flows into the low temperature side cooling water circuit 32 and returns to the cooling water flow path 11 via the sub radiator 42, the low temperature side intercooler 72 and the heat exchanger 76.
  • the temperature of the cooling water in the low-temperature side cooling water circuit 32 is lowered by exchanging heat with the outside air by the sub radiator 42.
  • the cooling water whose temperature has been lowered exchanges heat with the intake air supercharged in the low-temperature side intercooler 72, thereby lowering the intake air temperature and raising the cooling water temperature.
  • the temperature of the cooling water exiting the low-temperature side intercooler 72 is further increased by exchanging heat with the cooling water in the high-temperature side cooling water circuit 31 by the heat exchanger 76.
  • the cooling water whose temperature has risen returns to the engine 10 again.
  • the temperature of the cooling water of the high temperature side cooling water circuit 31 is slightly lowered by exchanging heat with the cooling water of the low temperature side cooling water circuit 32 by the heat exchanger 76, but the high temperature supercooled by the high temperature side intercooler 71 is reduced. By performing heat exchange with intake air, the temperature rises and returns to the engine 10 again.
  • the temperature of the intake air supercharged by the low temperature side intercooler 72 is lowered by the cooling water whose cooling water temperature has been lowered in the sub radiator 42.
  • the cooling water whose temperature has been lowered is configured such that the temperature is raised again by passing through the low-temperature intercooler 72 and the heat exchanger 76, and the cooling water whose temperature has risen returns to the engine 10 again.
  • the high temperature side cooling water circuit 31 and the low temperature side cooling water circuit 32 merge and return to the engine 10.
  • the high temperature side cooling water circuit 31 and the low temperature side cooling water circuit 32 are mixed. With such a configuration, in the low-temperature side cooling water circuit 32, the temperature of the cooling water returning to the engine 10 does not decrease, so that the warm-up delay of the engine 10 is improved.
  • the cooling water of the high-temperature side cooling water circuit 31 exiting from the engine 10 and the cooling water of the low-temperature side cooling water circuit 32 exiting from the low-temperature side intercooler 72 are:
  • the heat exchanger 76 is configured to perform heat exchange.
  • the low-temperature side cooling water circuit 32 reduces the temperature of the cooling water by the sub-radiator 42, the temperature of the supercharged intake air can be reduced, and the generation efficiency of the engine can be improved while generating NOx. Can be suppressed.
  • the temperature of the cooling water in the low-temperature side cooling water circuit 32 returning to the engine 10 rises by passing through the heat exchanger 76, so that the delay in warming up the engine 10 is improved. Since the temperature of the cooling water in the high temperature side cooling water circuit 31 flowing through the high temperature side intercooler 71 is lowered by passing through the heat exchanger 76, the intake air temperature can be lowered in the high temperature side intercooler 71.
  • the cooling water exiting the high temperature side intercooler 71 merges with the cooling water in the low temperature side cooling water circuit 32 before the engine 10 and flows to the engine 10, so that the temperature of the cooling water flowing to the engine 10 rises and the engine 10 The warm-up delay is improved.
  • This configuration improves the warm-up delay of the engine 10 even when the engine 10 is cold started.
  • FIG. 3 is an explanatory diagram of the cooling device 1 centering on the engine 10 according to the second embodiment of the present invention.
  • symbol is attached
  • the valve 85 is provided on the inlet side of the heat exchanger 76, and the bypass passage 86 that bypasses the heat exchanger 76 is provided.
  • the cooling water of the low temperature side cooling water circuit 32 flowing through the heat exchanger 76 is controlled by opening and closing the valve 75.
  • FIG. 3 is a flowchart of control of the cooling water circuit executed by the controller 60 according to the second embodiment of the present invention.
  • the controller 60 confirms whether or not the cooling water temperature has reached the valve opening temperature of the thermostat 44 in the low temperature side cooling water circuit 32 (step S10).
  • the cooling water temperature does not reach the valve opening temperature of the thermostat 44, it can be determined that the cooling water temperature is in a low state, and therefore malfunction of the first water temperature meter 81 and the second water temperature meter 82 can be determined. You may confirm not the cooling water temperature but whether the thermostat 44 opened.
  • the controller 60 detects the water temperature TwH on the inlet side of the heat exchanger 76 of the high-temperature side cooling water circuit 31 from the first water temperature gauge 81.
  • a water temperature TwL on the outlet side of the heat exchanger 76 of the low temperature side cooling water circuit 32 is detected from the second water temperature gauge 82. And it is determined whether water temperature TwL is lower than water temperature TwH (step S20).
  • step S30 the controller 60 controls the valve 85 to open.
  • the cooling water of the low temperature side cooling water circuit 32 passes through the heat exchanger 76, and in the heat exchanger 76, the cooling water of the low temperature side cooling water circuit 32 and the high temperature side cooling water circuit
  • the cooling water of 31 performs heat exchange. Thereafter, the process proceeds to step S40.
  • step S40 the controller 60 determines whether or not the water temperature TwL is higher than the water temperature TwH.
  • the process of step S40 is repeated and waits.
  • the valve 85 remains open, and in the heat exchanger 76, the cooling water in the low temperature side cooling water circuit 32 and the cooling water in the high temperature side cooling water circuit 31 perform heat exchange.
  • step S50 the controller 60 controls the valve 85 to be closed.
  • the cooling water in the low-temperature side cooling water circuit 32 does not pass through the heat exchanger 76 but passes through the bypass passage 86, and the high-temperature side cooling water circuit 31 that flows through the heat exchanger 76. There is no heat exchange with the cooling water. Thereafter, the process proceeds to step S60.
  • Step S20 when it is determined that the water temperature TwL is equal to or higher than the water temperature TwH, the process proceeds to Step S50 without performing the processing of Steps S30 and S40, that is, without opening the valve 85, and the controller 60 Control to close.
  • step S60 the controller 60 determines whether or not the operation of the engine 10 has been stopped. If the engine 10 is in operation, the process returns to step 20 and the process is repeated. When the operation of the engine 10 is stopped, the process according to this flowchart is terminated.
  • the controller 60 is based on the temperature of the water temperature TwL of the low temperature side cooling water circuit 32 and the water temperature TwH of the high temperature side cooling water circuit 31 in the heat exchanger 76. Then, it is determined whether or not heat exchange is performed by opening and closing the valve 85.
  • the heat exchange in the heat exchanger 76 is performed. Don't do it.
  • heat exchange with the cooling water having a temperature lower than that of the cooling water in the low-temperature side cooling water circuit 32 is not performed, so that the temperature of the cooling water flowing into the engine 10 does not decrease and the engine warms up. Machine delay is improved.
  • the temperature of the intake air supercharged in the high temperature side intercooler 71 can be further cooled by not performing heat exchange with the cooling water having a higher temperature in the high temperature side cooling water circuit 31.
  • FIG. 4 is an explanatory diagram of the cooling device 1 centering on the engine 10 according to the third embodiment of the present invention.
  • symbol is attached
  • a low temperature side third EGR cooler 24 is provided instead of the high temperature side second EGR cooler 22 in the first or second embodiment, and the low temperature side third EGR cooler 24 is provided with a low temperature side.
  • the cooling water of the cooling water circuit 32 is configured to flow in. Cooling water of the high temperature side cooling water circuit 31 flowing into the high temperature side first EGR cooler 21 provided in the EGR circuit 20 and cooling water of the low temperature side cooling water circuit 32 exiting from the low temperature side third EGR cooler 24.
  • a second heat exchanger 46 for performing heat exchange.
  • the lower the intake air temperature of the engine 10 the higher the efficiency. Therefore, in order to reduce the exhaust gas temperature recirculated by EGR, the low temperature cooling from the sub-radiator 42 to the third EGR cooler 24 on the low temperature side. It was configured to allow water to flow.
  • the cooling water that has exited the sub radiator 42 is sent to the third EGR cooler 24 on the low temperature side.
  • the cooling water that has exited the third EGR cooler 24 on the low temperature side returns to the cooling water flow path 11 of the engine 10 again via the second heat exchanger 46.
  • the second heat exchanger 46 exchanges heat between the cooling water exiting from the engine 10 in the high temperature side cooling water circuit 31 and the cooling water exiting from the third EGR cooler 24 on the low temperature side in the low temperature side cooling water circuit 32. I do.
  • the second heat exchanger 46 has, for example, a double pipe structure, and the cooling water of the high temperature side cooling water circuit 31 and the cooling water of the low temperature side cooling water circuit 32 are opposed to each other. The heat exchange is performed by configuring as described above.
  • the intake pipe 14 is provided with the first EGR cooler 21 on the high temperature side and the third EGR cooler 24 on the low temperature side in order to cool the exhaust gas recirculated by the EGR.
  • the third EGR cooler 24 on the low temperature side is configured to lower the exhaust temperature by the cooling water whose cooling water temperature has decreased in the sub radiator 42. .
  • the high temperature side cooling water circuit 31 is configured so that the temperature of the cooling water does not decrease by contacting with the high temperature exhaust gas. Therefore, even when the engine 10 is cold started, the relatively high temperature cooling water flows. The delay in warming up the engine 10 is improved.
  • the cooling water whose temperature has been lowered by the sub-radiator 42 returns to the cooling water flow path 11 via the low temperature side third EGR cooler 24 and the second heat exchanger 46.
  • the cooling water in the low temperature side cooling water circuit 32 is subjected to heat exchange with the exhaust gas in the low temperature side third EGR cooler 24, thereby lowering the exhaust gas temperature and increasing the cooling water temperature.
  • the temperature of the cooling water exiting the third EGR cooler 24 on the low temperature side is further increased by exchanging heat with the cooling water in the high temperature side cooling water circuit 31 in the second heat exchanger 46.
  • the cooling water whose temperature has risen returns to the engine 10 again.
  • the cooling water in the high temperature side cooling water circuit 31 and the cooling water in the low temperature side cooling water circuit 32 merge before the engine 10 and return to the engine 10.
  • the temperature of the cooling water returning to the engine 10 does not decrease, so that the warm-up delay of the engine 10 is improved.
  • the controller 60 determines whether to bypass the second heat exchanger 46 based on the water temperature of the low temperature side cooling water circuit 32 and the water temperature of the high temperature side cooling water circuit 31. Also good.
  • a valve 65 is provided on the inlet side of the second heat exchanger 46, and a bypass passage 66 that bypasses the second heat exchanger 46 is provided.
  • the cooling water of the low temperature side cooling water circuit 32 flowing through the second heat exchanger 46 is controlled by opening and closing the valve 65.
  • the second heat exchanger 46 includes a third water temperature meter 61 that detects the temperature of the cooling water flowing into the second heat exchanger 46 from the high temperature side cooling water circuit 31 and the low temperature side cooling water circuit 32. And a fourth water temperature meter 62 for detecting the temperature of the cooling water flowing into the water.
  • the controller 60 includes the water temperature TwH3 of the high temperature side cooling water circuit 31 detected by the third water temperature gauge 61 and the water temperature TwL4 of the low temperature side cooling water circuit 32 detected by the fourth water temperature gauge 62. Based on the above, the opening and closing of the valve 65 is controlled.
  • the valve is configured to perform heat exchange in the second heat exchanger 46.
  • Switch 65 the cooling water temperature of the low-temperature side cooling water circuit 32 can be increased, and the engine warm-up delay can be improved without lowering the temperature of the cooling water flowing into the engine 10.
  • the cooling water temperature of the high temperature side cooling water circuit 31 can be lowered, and the exhaust temperature can be further cooled in the first EGR cooler 21 on the high temperature side.
  • the exhaust temperature is lowered by the first EGR cooler 21 on the high temperature side, as in the first and second embodiments. Then, the exhaust temperature can be lowered in the third EGR cooler 24 on the low temperature side by the cooling water in the low temperature side cooling water circuit 32. Even in such a configuration, the temperature of the cooling water that circulates through the high temperature side cooling water circuit 31 and the low temperature side cooling water circuit 32 and returns to the engine 10 is not lowered. Delay in warming up the engine 10 can be improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Supercharger (AREA)
PCT/JP2014/053230 2013-02-27 2014-02-12 エンジンの吸気冷却装置及び冷却方法 WO2014132798A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112014001021.9T DE112014001021T8 (de) 2013-02-27 2014-02-12 Ansaugluft-Kühlvorrichtung für einen Motor und Verfahren zum Kühlen eines Motors
CN201480010853.1A CN105143633A (zh) 2013-02-27 2014-02-12 发动机的进气冷却装置及冷却方法
US14/770,719 US20160003127A1 (en) 2013-02-27 2014-02-12 Intake-air cooling device for engine and method for cooling engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013036644A JP5993759B2 (ja) 2013-02-27 2013-02-27 エンジンの吸気冷却装置
JP2013-036644 2013-02-27

Publications (1)

Publication Number Publication Date
WO2014132798A1 true WO2014132798A1 (ja) 2014-09-04

Family

ID=51428070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/053230 WO2014132798A1 (ja) 2013-02-27 2014-02-12 エンジンの吸気冷却装置及び冷却方法

Country Status (5)

Country Link
US (1) US20160003127A1 (de)
JP (1) JP5993759B2 (de)
CN (1) CN105143633A (de)
DE (1) DE112014001021T8 (de)
WO (1) WO2014132798A1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101610150B1 (ko) * 2014-10-22 2016-04-08 현대자동차 주식회사 냉각 시스템 및 이를 제어하는 방법
JP6064981B2 (ja) * 2014-12-12 2017-01-25 トヨタ自動車株式会社 内燃機関の制御装置
KR101637779B1 (ko) * 2014-12-15 2016-07-07 현대자동차주식회사 차량의 배기열 회수 장치 및 방법
CN105370376A (zh) * 2015-12-24 2016-03-02 玉柴联合动力股份有限公司 一种工程机械用柴油机冷却系统及其控制方法
KR101947977B1 (ko) * 2015-12-30 2019-02-13 바르실라 핀랜드 오이 차지 공기 쿨러를 세정하는 방법 및 내연 엔진
CN105736125A (zh) * 2016-03-17 2016-07-06 潍柴动力股份有限公司 一种发动机进气温度控制系统及控制方法
JP6414194B2 (ja) * 2016-12-26 2018-10-31 トヨタ自動車株式会社 内燃機関の制御装置
JP7139592B2 (ja) * 2017-10-06 2022-09-21 いすゞ自動車株式会社 冷却システム
US20190136746A1 (en) * 2017-11-06 2019-05-09 GM Global Technology Operations LLC Methods for controlling turbocharger compressor air cooling systems
FR3086976B1 (fr) * 2018-10-09 2020-09-25 Renault Sas Systeme de refroidissement pour moteur a combustion interne et procede de pilotage associe
KR20210049490A (ko) * 2019-10-25 2021-05-06 현대자동차주식회사 통합유량제어 밸브를 적용한 차량 열관리 시스템 및 냉각회로 제어 방법
KR20210049491A (ko) 2019-10-25 2021-05-06 현대자동차주식회사 통합유량제어 밸브를 적용한 차량 열관리 시스템 및 냉각회로 제어 방법
KR20210049494A (ko) 2019-10-25 2021-05-06 현대자동차주식회사 통합유량제어 밸브를 적용한 차량 열관리 시스템 및 냉각회로 제어 방법
KR102692485B1 (ko) 2019-10-25 2024-08-07 현대자동차주식회사 통합유량제어 밸브를 적용한 차량 열관리 시스템 및 냉각회로 제어 방법
KR20210049493A (ko) 2019-10-25 2021-05-06 현대자동차주식회사 통합유량제어 밸브를 적용한 차량 열관리 시스템 및 냉각회로 제어 방법
JP7488134B2 (ja) * 2020-07-01 2024-05-21 日本サーモスタット株式会社 冷却システム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010249129A (ja) * 2009-03-27 2010-11-04 Calsonic Kansei Corp チャージエアクーラ及び冷却システム
JP2011522996A (ja) * 2008-06-13 2011-08-04 スカニア シーブイ アクチボラグ 過給燃焼機関の冷却装置
JP2012211545A (ja) * 2011-03-31 2012-11-01 Mitsubishi Heavy Ind Ltd 定置用内燃機関の吸気冷却装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2066884B1 (de) * 2006-09-22 2011-08-24 Renault Trucks Kühlkreislauf für den verbrennungsmotor eines kraftfahrzeugs
US8434433B2 (en) * 2007-02-20 2013-05-07 Modine Manufacturing Company Heat exchanger system and method of operating the same
US20090078220A1 (en) * 2007-09-25 2009-03-26 Ford Global Technologies, Llc Cooling System with Isolated Cooling Circuits
DE102008015283B3 (de) * 2008-03-20 2009-09-03 Continental Automotive Gmbh Verfahren und Steuervorrichtung zum Starten einer Brennkraftmaschine, welche eine Heizeinrichtung zum Erhitzen einer Kühlflüssigkeit aufweist
US8215381B2 (en) * 2009-04-10 2012-07-10 Ford Global Technologies, Llc Method for controlling heat exchanger fluid flow

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011522996A (ja) * 2008-06-13 2011-08-04 スカニア シーブイ アクチボラグ 過給燃焼機関の冷却装置
JP2010249129A (ja) * 2009-03-27 2010-11-04 Calsonic Kansei Corp チャージエアクーラ及び冷却システム
JP2012211545A (ja) * 2011-03-31 2012-11-01 Mitsubishi Heavy Ind Ltd 定置用内燃機関の吸気冷却装置

Also Published As

Publication number Publication date
DE112014001021T5 (de) 2015-12-03
JP5993759B2 (ja) 2016-09-14
US20160003127A1 (en) 2016-01-07
JP2014163336A (ja) 2014-09-08
CN105143633A (zh) 2015-12-09
DE112014001021T8 (de) 2015-12-31

Similar Documents

Publication Publication Date Title
JP5993759B2 (ja) エンジンの吸気冷却装置
CN107304725B (zh) 发动机系统以及使用发动机系统控制发动机的方法
JP4877057B2 (ja) 内燃機関の冷却系装置
JP4802811B2 (ja) エンジンの冷却水回路
JP2011508851A (ja) 排気ガス再循環冷却回路
JP2009216028A (ja) 内燃機関の冷却装置
KR101779273B1 (ko) 엔진 흡기 열관리 장치 및 관련된 열관리 방법
JP6007128B2 (ja) 排気再循環装置の冷却装置
US11125190B2 (en) Methods and system for an engine system
JP2014009617A (ja) 内燃機関の冷却装置
JP2016000971A (ja) 過給機付き内燃機関システム
WO2013080980A1 (ja) エンジンの冷却装置及びその冷却方法
WO2013011768A1 (ja) エンジンの冷却回路
WO2013011767A1 (ja) エンジンの冷却回路
JP2012082723A (ja) 内燃機関の冷却装置
JP2020180574A (ja) 内燃機関の冷却装置
JP4060697B2 (ja) Ｅｇｒガスの冷却装置
JP5918474B2 (ja) Ｅｇｒ装置
JP5918475B2 (ja) Ｅｇｒ装置
JP2011185245A (ja) 内燃機関の冷却装置
JP5360980B2 (ja) 内燃機関の暖機促進装置
JP5983453B2 (ja) 吸気冷却装置
JP7160182B2 (ja) 熱交換システム
JP2013113168A (ja) エンジンの冷却装置
JP2020090903A (ja) 内燃機関の制御装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201480010853.1

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14756584

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 14770719

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 112014001021

Country of ref document: DE

Ref document number: 1120140010219

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14756584

Country of ref document: EP

Kind code of ref document: A1