WO2023082677A1 - 发动机风冷系统及具有其的车辆 - Google Patents

发动机风冷系统及具有其的车辆 Download PDF

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Publication number
WO2023082677A1
WO2023082677A1 PCT/CN2022/104458 CN2022104458W WO2023082677A1 WO 2023082677 A1 WO2023082677 A1 WO 2023082677A1 CN 2022104458 W CN2022104458 W CN 2022104458W WO 2023082677 A1 WO2023082677 A1 WO 2023082677A1
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WIPO (PCT)
Prior art keywords
engine
guide
air
deflector
supercharger
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PCT/CN2022/104458
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English (en)
French (fr)
Inventor
吴乃鹏
郭超
陈明
高井辉
杨庆敖
韩小强
Original Assignee
中国第一汽车股份有限公司
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Application filed by 中国第一汽车股份有限公司 filed Critical 中国第一汽车股份有限公司
Publication of WO2023082677A1 publication Critical patent/WO2023082677A1/zh

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    • 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
    • F01P1/00—Air cooling
    • F01P1/06—Arrangements for cooling other engine or machine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/05—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
    • 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
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • 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
    • F01P1/00—Air cooling
    • F01P2001/005—Cooling engine rooms

Definitions

  • the invention relates to the technical field of vehicle manufacturing, in particular to an engine air cooling system and a vehicle with the same.
  • This application claims the priority of the patent application submitted to the State Intellectual Property Office of China on November 15, 2021, with the application number 202111349011.7, and the title of the invention is "Engine Air Cooling System and Vehicle with It".
  • the power density of the engine gradually increases, and the heat dissipation of the engine increases.
  • the supercharger and the exhaust pipe are arranged in the middle of the V angle, which makes it more difficult to dissipate heat, and the temperature increase of the engine room is more obvious.
  • the surface temperature of the exhaust system can reach hundreds of degrees Celsius, and the space in the engine compartment is small, so it is necessary to arrange various parts such as wiring harnesses, cooling water pipes, ventilation pipes, and sound insulation cotton. At the same time, most of the materials around the exhaust system cannot withstand High temperature of hundreds of degrees Celsius.
  • the parts are kept at a sufficient distance from the surface of the exhaust system, making it difficult to arrange the parts in the engine compartment which is empty and narrow, and the production cost is increased due to the need to use heat insulating materials when covering the heat insulation layer.
  • the main purpose of the present invention is to provide an engine air cooling system and a vehicle with the same, so as to solve the problem of high cost of the engine cooling system in the prior art.
  • an engine air cooling system includes: an engine compartment, the engine compartment has an air inlet for the engine compartment;
  • the flow structure is arranged inside the engine compartment, and the flow guide structure has a guide channel, which communicates with the intake port of the engine compartment, so as to direct the airflow from the intake port of the engine compartment to the exhaust pipe and the supercharger, so as to reduce the exhaust gas tube and booster temperature.
  • the air guide structure includes a first air guide structure, the first air guide structure is connected to the front end surface of the engine body, and the first air guide structure is arranged opposite to the air inlet of the engine compartment.
  • the engine body has a mounting surface
  • the exhaust pipe and the supercharger are arranged on the mounting surface
  • the flow guide structure also includes: a second flow guide structure, at least two second flow guide structures, two second flow guide structures The structures are arranged oppositely, and the two second flow guide structures are both connected to the installation surface, and the exhaust pipe and the supercharger are located between the two second flow guide structures.
  • the second deflector structure is a deflector body, and the deflector surface of the deflector body is arranged along the vertical direction.
  • the installation surface is a V-shaped structure, and the exhaust pipe and the supercharger are arranged between two opposite surfaces of the installation surface.
  • the flow guide structure also includes: a flow guide cover, the flow guide cover is arranged in the engine compartment, the flow guide cover is arranged on the outside of the engine body, the first flow guide structure and the second flow guide structure, and the inside of the flow guide cover
  • a diversion channel is formed between the surface and the first diversion structure and the second diversion structure, the diversion cover has a diversion inlet connected to the engine compartment inlet, and the diversion inlet is opposite to the first diversion structure ground setting.
  • wind deflector is integrated with the engine compartment.
  • the air deflector cover includes a deflector section arranged in the vertical direction, the air guide air inlet is opened on the deflector section, and the front end face is arranged opposite to the deflector section.
  • the first diversion structure includes: an arc-shaped diversion body, the arc-shaped diversion body is connected to the front end surface, the arc surface of the arc-shaped diversion body is protruded toward the side of the diversion air inlet, and the arc-shaped diversion body The distance from the surface of the main body to the front end surface is set variably along the vertical direction.
  • a vehicle includes an engine air-cooling system, the engine air-cooling system is the above-mentioned engine air-cooling system, the vehicle includes an air intake grille, the air intake grille is located at the front end of the vehicle, and the engine The cabin air inlet communicates with the air intake channel of the air intake grille, so as to guide the airflow from the vehicle traveling direction into the guide channel for heat exchange with the exhaust pipe and the supercharger.
  • the air flow passes through the exhaust pipe and the supercharger to cool the surface of the exhaust pipe and the supercharger, thereby realizing the cooling of the surface of the exhaust pipe and the supercharger.
  • it is only necessary to increase the flow guide structure, without changing the original structure of the engine compartment, and at the same time, it does not need to use heat insulating materials, which reduces the manufacturing cost.
  • Fig. 1 shows the schematic structural view of the first embodiment of the engine air cooling system according to the present invention
  • Fig. 2 shows the structural representation of the second embodiment of the engine air cooling system according to the present invention
  • Fig. 3 shows the schematic structural view of the third embodiment of the engine air cooling system according to the present invention.
  • Fig. 4 shows the schematic structural view of the fourth embodiment of the engine air cooling system according to the present invention.
  • Fig. 5 shows the structural representation of the fifth embodiment of the engine air cooling system according to the present invention.
  • Fig. 6 shows the schematic structural view of the sixth embodiment of the engine air cooling system according to the present invention.
  • Fig. 7 shows a schematic structural view of the first embodiment of the first flow guiding structure according to the present invention
  • FIG. 8 shows a schematic structural diagram of a second embodiment of the first flow guiding structure according to the present invention.
  • Fig. 9 shows a schematic structural diagram of a third embodiment of the first flow guide structure according to the present invention.
  • the first diversion structure 211.
  • the curved diversion body 211.
  • the second deflector structure 221.
  • the deflector body 221.
  • an engine air cooling system is provided.
  • the engine air cooling system includes: engine compartment, the engine compartment has an engine compartment air intake; engine, the engine is arranged in the engine compartment, the engine includes an engine body 10, and the engine body 10 is provided with an exhaust pipe 11 and a supercharger 12; Flow structure 20, the flow guide structure 20 is arranged inside the engine compartment, the flow guide structure 20 has a flow guide channel 30, and the flow guide channel 30 communicates with the air inlet of the engine compartment to guide the airflow from the air inlet of the engine compartment to the exhaust pipe 11 and the supercharger 12 to reduce the temperature of the exhaust pipe 11 and the supercharger 12.
  • the air flow passes through the exhaust pipe and the supercharger to cool the surface of the exhaust pipe and the supercharger, thereby realizing the cooling of the surface of the exhaust pipe and the supercharger.
  • the diversion structure needs to be added, and the original structure of the engine compartment does not need to be changed.
  • the engine compartment directly Connected with the bottom plate of the car, after the airflow enters the engine compartment, it enters the ground through the bottom plate, and the airflow is discharged out of the car body.
  • the air guiding structure 20 includes a first air guiding structure 21 connected to the front end of the engine body 10 , and the first air guiding structure 21 is arranged opposite to the air inlet of the engine compartment.
  • a protruding cylindrical block is arranged on the engine body, the end face of the cylindrical block is the front end face of the engine, and the first flow guide structure 21 is connected with the front end face and arranged opposite to the engine compartment air inlet, It is convenient for the airflow to be guided by the first air guide structure 21 after entering from the air inlet of the engine compartment, so that more airflow passes through the exhaust pipe 11 and the supercharger 12 to achieve a better heat exchange effect.
  • the engine body 10 has a mounting surface, the exhaust pipe 11 and the supercharger 12 are arranged on the mounting surface, and the flow guide structure 20 also includes a second flow guide structure 22, and there are at least two second flow guide structures 22, two second The flow guide structures 22 are arranged oppositely, and the two second flow guide structures 22 are both connected to the installation surface, and the exhaust pipe 11 and the supercharger 12 are located between the two second flow guide structures 22 .
  • the airflow is restricted from passing through the two second air guide structures 22, and the exhaust pipe 11 and the supercharger 12 located in the second air guide structure 22 are fully in contact with the airflow, so as to obtain more Good heat transfer effect.
  • the second deflector structure is a deflector body 221 , and the deflector surface of the deflector body 221 is arranged along the vertical direction.
  • the deflector body 221 is arranged vertically, which can block the dispersion of the airflow on the horizontal plane, gather the airflow between the two deflector bodies 221, and flow toward the exhaust pipe 11 and the supercharger 12 along the horizontal direction.
  • the installation surface has a V-shaped structure, and the exhaust pipe 11 and the supercharger 12 are arranged between two opposite surfaces of the installation surface.
  • the supercharger 12 is arranged between the mounting surfaces of the V-shaped structure for supercharging the intake air of the engine, and the exhaust pipe 11 is designed at the rear end of the supercharger 12 for processing and guiding the exhaust gas of the engine. to allow the engine exhaust to enter the air.
  • the power density of the V-type engine is relatively large, and the heat dissipation pressure of the exhaust pipe 11 and the supercharger 12 is also relatively large.
  • An air-cooling system is arranged on the V-type engine, which is conducive to obtaining more stable engine performance.
  • the deflector structure 20 also includes a deflector cover 23, the deflector cover 23 is arranged in the engine compartment, the deflector cover 23 is set on the outside of the engine body 10, the first deflector structure 21 and the second deflector structure 22, and the deflector A guide channel 30 is formed between the inner surface of the cover 23 and the first guide structure 21 and the second guide structure 22;
  • the air port 24 is disposed opposite to the first flow guiding structure 21 .
  • the arrangement of the air deflector 23 can guide the air flow entering the engine compartment, and the air guide channel 30 is formed between the air deflector 23 and the first air guide structure 21 and the second air guide structure 22, so that the air flow Flow along the guide channel 30 to the exhaust pipe 11 and the supercharger 12 to realize the cooling effect on the exhaust pipe 11 and the supercharger 12 .
  • the diversion air intake 24 provided on the air guide cover 23 can make the air flow enter the air guide channel 30 smoothly after entering from the air intake of the engine compartment.
  • the wind deflector 23 is integrated with the engine compartment.
  • the wind deflector 23 is integrated with the engine compartment, which can make the gap between the wind deflector 23 and the engine compartment smaller, so that the volume of the engine compartment is smaller, and it is integrated during manufacture. It is beneficial to save manufacturing costs and improve production efficiency. In practical applications, the wind deflector 23 and the engine compartment can be manufactured separately and then assembled.
  • the deflector cover 23 includes a deflector segment 231 arranged vertically, the deflector air inlet 24 is opened on the deflector segment 231 , and the front end thereof is disposed opposite to the deflector segment 231 .
  • the front end face and the deflector section 231 are arranged opposite to each other to achieve a better guiding effect on the airflow.
  • the shape of the guide air inlet 24 can be square, circular, oval, polygonal or other special shapes.
  • the first air guiding structure 21 includes an arc-shaped air guiding body 211, which is connected to the front end surface, and the arc surface of the arc-shaped air guiding body 211 is protrudingly arranged toward the side of the air guiding air inlet 24, The distance from the surface of the arc-shaped flow guiding body 211 to the front end surface is set to vary along the vertical direction.
  • the arrangement of the arc-shaped air guide body 211 can facilitate the flow of airflow along the surface of the arc-shaped air guide body 211, and the arc surface of the arc-shaped air guide body 211 is protruded toward the air guide air inlet 24, so that the airflow can enter the engine
  • the rear edge of the cabin enters the diversion passage along the protruding part.
  • the arc-shaped flow guide body 211 may be bent from a thin metal plate.
  • the distance from the surface of the arc-shaped flow guide body 211 to the front end surface is set to gradually increase and then gradually decrease along the vertical direction upward.
  • the distance from the surface of the arc-shaped flow guide body 211 to the front end surface gradually increases and decreases gradually, which can make the surface of the arc-shaped flow guide body 211 smooth, facilitate the flow of air along the surface of the arc-shaped flow guide body 211, and better realize the Direction of airflow.
  • the position on the outer surface of the arc-shaped air guiding body 211 farthest from the front end surface is set close to the lower edge of the air guiding air inlet 24 .
  • Such setting can make more air flow enter the engine compartment and then enter the air guide channel through the outer surface of the arc-shaped air guide body 211 .
  • the position of the outer surface of the arc-shaped air guiding body 211 farthest from the front end surface may be lower than the lower edge of the air guiding air inlet 24 .
  • the position of the outer surface of the arc-shaped air guiding body 211 farthest from the front end is located below the geometric center of the air guiding air inlet 24 .
  • This setting can make more air flow enter the engine compartment because the outer surface of the arc-shaped air guide body 211 is blocked from the farthest position from the front end to enter the air guide channel, so that more air flows through the exhaust pipe 11 and the supercharger 12, Get better heat transfer effect.
  • At least part of the outer peripheral side of the arc-shaped air guiding body 211 is provided with curling edges 25 , and the surface of the curling edges 25 facing the air guiding air inlet 24 forms an air guiding surface.
  • curling edges 25 are provided on the outer peripheral sides of all the arc-shaped air guiding bodies 211 , so that the arc-shaped air guiding bodies 211 have a better air guiding effect and avoid mutual interference between airflows.
  • a cavity is formed between the arc-shaped air guide body 211 and the front end surface of the engine, and the outer surface of the arc-shaped air guide body 211 facing the air inlet of the engine compartment forms an air guide surface, and at least part of the arc-shaped air guide
  • the outer peripheral side of the main body 211 is provided with a curling edge 25, which is used to block the cavity. The cavity is blocked.
  • At least one side of the arc-shaped flow guiding body 211 is provided with a sealing baffle 40, and the sealing baffle 40 is used to seal off the cavity.
  • sealing baffles 40 are provided on both sides of the arc-shaped guide body 211 , and the sealing baffles 40 are used to seal off the cavity.
  • the sealing baffle 40 may be a thin metal plate.
  • the second air guide structure 22 is connected to the installation surface and the top of the air guide cover 23, or the lower end of the second air guide structure 22 is connected to the installation surface, and the upper end of the second air guide structure 22 is connected to the top of the air guide cover 23.
  • the top of is set with a distance.
  • a vehicle is provided, the vehicle includes an engine air cooling system, and the engine air cooling system is the engine air cooling system in the above embodiments.
  • the vehicle includes an air intake grille
  • the air intake grille is located at the front end of the vehicle
  • the intake port of the engine compartment communicates with the air intake passage of the air intake grille to guide the airflow from the direction of travel of the vehicle into the guide from the front of the vehicle.
  • Heat exchange is performed with the exhaust pipe 11 and the supercharger 12 in the flow passage 30 .
  • this setting is more cost-effective than the traditional cooling method, and the engine cooling system is simple in structure, no need to modify the cooling system of the existing engine, avoiding the need to increase the gap between parts in the engine compartment The problem of difficult engine compartment layout caused by the distance.
  • Above-mentioned engine air-cooling system can be applied to automobile, and the engine of automobile can be V-type engine, and V-type engine has smaller height and length size, and volume is smaller, and is more convenient to arrange when being applied to automobile, and V-type engine can be easy to expand Cylinder diameters are used to increase displacement and power, and V-type engines are also suitable for higher cylinder counts. Due to the relative arrangement of the cylinders in the V-type engine, part of the vibration can be offset to make the engine run more smoothly, and the V-type engine has broad application prospects in mid-to-high-end models.
  • the engine air-cooling system is set up to guide the airflow into the engine compartment during the running of the car, and guide the airflow to places where the temperature is high during operation, such as the exhaust pipe 11 and the supercharger 12, and the exhaust pipe 11 and supercharger 12 for cooling down.
  • the cylinders of the V-type engine are two rows and designed at a V-shaped angle
  • the supercharger 12 is designed in the middle of the V-shaped angle, and is connected in series between the engine and the exhaust pipe 11. It is used to recover exhaust energy and supercharge the intake air of the engine.
  • the exhaust pipe 11 is designed at the rear end of the supercharger 12, and is used for processing and guiding the exhaust gas of the engine so that the exhaust gas of the engine is discharged into the air.
  • the car also has an air intake grille (not shown in the figure) designed at the front end of the car, and the air intake grille is used to guide the airflow from the traveling direction of the car.
  • the engine air cooling system of an automobile includes an engine compartment (not shown in the figure), an engine body 10 , an arc guide body 211 , a guide plate body 221 and a guide cover 23 .
  • the engine body has a front end face, and the wind deflector 23 is integrated with the engine compartment.
  • the wind deflector 23 includes a deflector segment 231 arranged in the vertical direction, and the deflector air inlet 24 is opened on the deflector segment 231 and guides
  • the flow inlet 24 is arranged opposite to the engine compartment air inlet (not shown in the figure) opened on the engine compartment, and the deflector section 231 is arranged opposite to the front end surface of the engine.
  • the distance from the surface of the arc-shaped flow guide body 211 to the front end surface is gradually increased and then gradually decreased along the vertical direction, and the outer surface of the arc-shaped flow guide body 211 is located at the farthest position from the front end surface at the guide air inlet 24 below the geometric center.
  • the lower end of the deflector body 221 is connected with the mounting surface of the V-shaped structure on the engine body 10, the upper end of the deflector body 221 is arranged with a distance from the top of the deflector cover 23, and the deflector surface of the deflector body 221 is along the Vertical orientation setting.
  • a flow guide channel 30 is formed between the inner surface of the flow guide cover 23 and the arc-shaped flow guide body 211 and the flow guide plate body 221 .
  • the airflow enters the engine compartment through the engine compartment air inlet and the guide air intake 24, enters the guide channel 30 along the arc surface of the arc guide body 211, and exits the engine compartment after passing through the exhaust pipe 11 and the supercharger 12.
  • the arrangement of the air guide channel 30 makes as much air flow as possible contact with the exhaust pipe 11 and the supercharger 12 . Achieve maximum cooling effect.
  • the technical solution of the application can make full use of the natural wind generated during the driving process of the car, and does not need to change the structure and use of the engine.
  • the heat insulation material effectively reduces the manufacturing cost and realizes a stable and good cooling effect.
  • V-type engines such as in-line engines (i.e. L-type engines), W-type engines, horizontally opposed engines (i.e. H-type engines), rotor Type engine (that is, R type engine) and VR type engine.
  • a kind of SUV (Sport/Suburban Utility Vehicle, sports multipurpose SUV vehicle) vehicle is provided, the engine of this vehicle has the engine air cooling system in the above-mentioned embodiment, the engine of this vehicle can be It is a V-type engine, and the cylinders provided by the V-type engine are two rows and designed at a V-shaped angle.
  • the supercharger 12 is designed in the middle of the V-shaped angle, and is connected in series between the engine and the exhaust pipe 11 for recovery. Exhaust energy, pressurizing the intake air of the engine.
  • the exhaust pipe 11 is designed at the rear end of the supercharger 12, and is used for processing and guiding the exhaust gas of the engine so that the exhaust gas of the engine is discharged into the air.
  • the engine air cooling system includes an engine compartment (not shown in the figure), an engine body 10 , an arc-shaped guide body 211 , a guide plate body 221 and a guide cover 23 .
  • the engine body has a front end face, and the wind deflector 23 is integrated with the engine compartment.
  • the wind deflector 23 includes a deflector segment 231 arranged in the vertical direction, and the deflector air inlet 24 is opened on the deflector segment 231 and guides
  • the flow inlet 24 is arranged opposite to the engine compartment air inlet (not shown in the figure) opened on the engine compartment, and the deflector section 231 is arranged opposite to the front end surface of the engine.
  • the distance from the surface of the arc-shaped flow guide body 211 to the front end surface is gradually increased and then gradually decreased along the vertical direction, and the outer surface of the arc-shaped flow guide body 211 is located at the farthest position from the front end surface at the guide air inlet 24 below the geometric center.
  • the lower end of the deflector body 221 is connected with the mounting surface of the V-shaped structure on the engine body 10, the upper end of the deflector body 221 is arranged with a distance from the top of the deflector cover 23, and the deflector surface of the deflector body 221 is along the Vertical orientation setting.
  • a flow guide channel 30 is formed between the inner surface of the flow guide cover 23 and the arc-shaped flow guide body 211 and the flow guide plate body 221 .
  • the airflow enters the engine compartment through the engine compartment air inlet and the guide air intake 24, enters the guide channel 30 along the arc surface of the arc guide body 211, and exits the engine compartment after passing through the exhaust pipe 11 and the supercharger 12.
  • the setting of the air guide channel 30 makes as much air flow as possible contact with the exhaust pipe 11 and the supercharger 12 to achieve the maximum cooling effect.
  • the SUV vehicle also has an air intake grille (not shown in the figure) designed at the front end of the SUV vehicle, and the air intake grille is used to guide the airflow from the traveling direction of the SUV vehicle.
  • the technical solution of the present application can make full use of the natural wind generated during the running of the SUV vehicle, without changing the engine structure and using heat insulation materials, effectively reducing the manufacturing cost, and achieving a stable and good cooling effect.
  • the vehicle for which the engine air cooling system in the above embodiment is applicable includes a car, and the engine of the car may be a V-type engine, and the V-type engine has two rows of cylinders arranged in the form of a V-type engine.
  • the V-shaped included angle design, the supercharger 12 is designed in the middle of the V-shaped included angle, connected in series between the engine and the exhaust pipe 11, and is used for recovering exhaust energy and supercharging the intake air of the engine.
  • the exhaust pipe 11 is designed at the rear end of the supercharger 12, and is used for processing and guiding the exhaust gas of the engine so that the exhaust gas of the engine is discharged into the air.
  • the engine air cooling system includes an engine compartment (not shown in the figure), an engine body 10 , an arc-shaped guide body 211 , a guide plate body 221 and a guide cover 23 .
  • the engine body has a front end face, and the wind deflector 23 is integrated with the engine compartment.
  • the wind deflector 23 includes a deflector segment 231 arranged in the vertical direction, and the deflector air inlet 24 is opened on the deflector segment 231 and guides
  • the flow inlet 24 is arranged opposite to the engine compartment air inlet (not shown in the figure) opened on the engine compartment, and the deflector section 231 is arranged opposite to the front end surface of the engine.
  • the distance from the surface of the arc-shaped flow guide body 211 to the front end surface is gradually increased and then gradually decreased along the vertical direction, and the outer surface of the arc-shaped flow guide body 211 is located at the farthest position from the front end surface at the guide air inlet 24 below the geometric center.
  • the lower end of the deflector body 221 is connected with the mounting surface of the V-shaped structure on the engine body 10, the upper end of the deflector body 221 is arranged with a distance from the top of the deflector cover 23, and the deflector surface of the deflector body 221 is along the Vertical orientation setting.
  • a flow guide channel 30 is formed between the inner surface of the flow guide cover 23 and the arc-shaped flow guide body 211 and the flow guide plate body 221 .
  • the airflow enters the engine compartment through the engine compartment air inlet and the guide air intake 24, enters the guide channel 30 along the arc surface of the arc guide body 211, and exits the engine compartment after passing through the exhaust pipe 11 and the supercharger 12.
  • the setting of the air guide channel 30 makes as much air flow as possible contact with the exhaust pipe 11 and the supercharger 12 to achieve the maximum cooling effect.
  • the car also has an air intake grille (not shown in the figure) designed at the front end of the car, and the air intake grille is used to guide the airflow from the traveling direction of the car.
  • the technical solution of the application can make full use of the natural wind generated during the running of the car, without changing the engine structure and using heat insulating materials, effectively reducing the manufacturing cost, and achieving a stable and good cooling effect.
  • the vehicle for which the engine air cooling system in the above embodiment is applicable includes an MPV (Multi-Purpose Vehicle, multi-purpose vehicle) vehicle, and the engine that the MPV vehicle has can be a V-type engine, V
  • the cylinders provided by the type engine are two rows and are designed at a V-shaped angle, and the supercharger 12 is designed in the middle of the V-shaped angle, and is connected in series between the engine and the exhaust pipe 11 for recovering exhaust energy. Intake is pressurized.
  • the exhaust pipe 11 is designed at the rear end of the supercharger 12, and is used for processing and guiding the exhaust gas of the engine so that the exhaust gas of the engine is discharged into the air.
  • the engine air cooling system includes an engine compartment (not shown in the figure), an engine body 10 , an arc-shaped guide body 211 , a guide plate body 221 and a guide cover 23 .
  • the engine body has a front end face, and the wind deflector 23 is integrated with the engine compartment.
  • the wind deflector 23 includes a deflector segment 231 arranged in the vertical direction, and the deflector air inlet 24 is opened on the deflector segment 231 and guides
  • the flow inlet 24 is arranged opposite to the engine compartment air inlet (not shown in the figure) opened on the engine compartment, and the deflector section 231 is arranged opposite to the front end surface of the engine.
  • the distance from the surface of the arc-shaped flow guide body 211 to the front end surface is gradually increased and then gradually decreased along the vertical direction, and the outer surface of the arc-shaped flow guide body 211 is located at the farthest position from the front end surface at the guide air inlet 24 below the geometric center.
  • the lower end of the deflector body 221 is connected with the mounting surface of the V-shaped structure on the engine body 10, the upper end of the deflector body 221 is arranged with a distance from the top of the deflector cover 23, and the deflector surface of the deflector body 221 is along the Vertical orientation setting.
  • a flow guide channel 30 is formed between the inner surface of the flow guide cover 23 and the arc-shaped flow guide body 211 and the flow guide plate body 221 .
  • the airflow enters the engine compartment through the engine compartment air inlet and the guide air intake 24, enters the guide channel 30 along the arc surface of the arc guide body 211, and exits the engine compartment after passing through the exhaust pipe 11 and the supercharger 12.
  • the setting of the air guide channel 30 makes as much air flow as possible contact with the exhaust pipe 11 and the supercharger 12 to achieve the maximum cooling effect.
  • the MPV vehicle also has an air intake grille (not shown in the figure) designed at the front end of the MPV vehicle, and the air intake grille is used to guide the airflow guide from the traveling direction of the MPV vehicle.
  • the technical solution of the present application can make full use of the natural wind generated during the running of the MPV vehicle, without changing the engine structure and using heat insulation materials, effectively reducing the manufacturing cost, and achieving a stable and good cooling effect.
  • spatially relative terms may be used here, such as “on !, “over !, “on the surface of !, “above”, etc., to describe The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as “above” or “above” other devices or configurations would then be oriented “beneath” or “above” the other devices or configurations. under other devices or configurations”. Thus, the exemplary term “above” can encompass both an orientation of “above” and “beneath”. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

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Abstract

本发明提供了一种发动机风冷系统及具有其的车辆。发动机风冷系统包括：发动机舱，发动机舱具有发动机舱进气口；发动机，发动机设置于发动机舱内，发动机包括发动机本体，发动机本体上设置有排气管和增压器；导流结构，导流结构设置于发动机舱内部，导流结构具有导流通道，导流通道与发动机舱进气口连通，以将来自发动机舱进气口的气流导向排气管和增压器，以降低排气管和增压器的温度。本发明的技术方案通过设置导流结构，使得气流经过排气管和增压器，对排气管和增压器表面进行冷却，实现排气管和增压器表面的降温。相比于现有技术，不需要改变发动机舱的原有结构且不需要使用隔热材料，降低了生产制造成本。

Description

发动机风冷系统及具有其的车辆 技术领域
本发明涉及车辆制造技术领域，具体而言，涉及一种发动机风冷系统及具有其的车辆。本申请要求于2021年11月15日提交至中国国家知识产权局、申请号为202111349011.7、发明名称为“发动机风冷系统及具有其的车辆”的专利申请的优先权。
背景技术
随着车辆动力性日益增强，发动机的功率密度逐渐增大，发动机散热量增加。对于V型发动机，增压器和排气管布置在V角中间，散热的难度更高，机舱温度增加更明显。
发动机在工作过程中排气系统表面温度可达到几百摄氏度，而发动机舱内空间狭小，需要布置线束、冷却水管、通气管，隔音棉等多种零件，同时排气系统周边的材料大多不能承受几百摄氏度的高温。
现有技术中，在布置排气系统附近的零件时，为了避免零件表面温度过高，一般采用的方法有：
(1)零件与排气系统表面保持足够的距离；
(2)零件或排气系统表面包覆隔热层。
采用上述方法，使得零件与排气系统表面保持足够距离使得空闲狭小的发动机舱内零件布置困难，包覆隔热层时由于需使用隔热材料，增加生产成本。
发明内容
本发明的主要目的在于提供一种发动机风冷系统及具有其的车辆，以解决现有技术中发动机冷却系统成本较高的问题。
为了实现上述目的，根据本发明的一个方面，提供了一种发动机风冷系统。发动机风冷系统包括：发动机舱，发动机舱具有发动机舱进气口；发动机，发动机设置于发动机舱内，发动机包括发动机本体，发动机本体上设置有排气管和增压器；导流结构，导流结构设置于发动机舱内部，导流结构具有导流通道，导流通道与发动机舱进气口连通，以将来自发动机舱进气口的气流导向排气管和增压器，以降低排气管和增压器的温度。
进一步地，导流结构包括第一导流结构，第一导流结构与发动机本体的前端面连接，第一导流结构与发动机舱进气口相对地设置。
进一步地，发动机本体具有安装面，排气管和增压器设置于安装面上，导流结构还包括：第二导流结构，第二导流结构至少为两个，两个第二导流结构相对地设置，且两个第二导流结构均与安装面连接，排气管和增压器位于两个第二导流结构之间。
进一步地，第二导流结构为导流板体，导流板体的导流面沿竖直方向设置。
进一步地，安装面为V型结构，排气管和增压器设置于安装面相对的两个面之间。
进一步地，导流结构还包括：导流罩，导流罩设置于发动机舱内，导流罩罩设于发动机本体、第一导流结构和第二导流结构的外侧，导流罩的内表面与第一导流结构和第二导流结构之间形成导流通道，导流罩具有与发动机舱进气口连通的导流进气口，导流进气口与第一导流结构相对地设置。
进一步地，导流罩与发动机舱一体设置。
进一步地，导流罩包括沿竖直方向设置的导流板段，导流进气口开设于导流板段上，前端面与导流板段相对地设置。
进一步地，第一导流结构包括：弧形导流本体，弧形导流本体与前端面连接，弧形导流本体的弧面朝向导流进气口一侧凸出地设置，弧形导流本体的表面至前端面的距离沿竖直方向变化地设置。
根据本发明的另一个方面，提供了一种车辆，车辆包括发动机风冷系统，发动机风冷系统为上述的发动机风冷系统，车辆包括进气格栅，进气格栅位于车辆的前端，发动机舱进气口与进气格栅的进气通道连通，以将来自车辆行进方向的气流导入导流通道内与排气管和增压器进行热交换。
应用本发明的技术方案，通过设置导流结构，使得气流经过排气管和增压器，对排气管和增压器表面进行冷却，实现排气管和增压器表面的降温。相比于现有技术，仅需要增加导流结构，不需要改变发动机舱的原有结构，同时，不需要使用隔热材料，降低了生产制造成本。
附图说明
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1示出了根据本发明的发动机风冷系统的第一实施例的结构示意图；
图2示出了根据本发明的发动机风冷系统的第二实施例的结构示意图；
图3示出了根据本发明的发动机风冷系统的第三实施例的结构示意图；
图4示出了根据本发明的发动机风冷系统的第四实施例的结构示意图；
图5示出了根据本发明的发动机风冷系统的第五实施例的结构示意图；
图6示出了根据本发明的发动机风冷系统的第六实施例的结构示意图；
图7示出了根据本发明的第一导流结构的第一实施例的结构示意图；
图8示出了根据本发明的第一导流结构的第二实施例的结构示意图；
图9示出了根据本发明的第一导流结构的第三实施例的结构示意图。
其中，上述附图包括以下附图标记：
10、发动机本体；11、排气管；12、增压器；
20、导流结构；
21、第一导流结构；211、弧形导流本体；
22、第二导流结构；221、导流板体；
23、导流罩；231、导流板段；24、导流进气口；25、卷边；
30、导流通道；
40、密封挡板。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便这里描述的本申请的实施方式例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
现在，将参照附图更详细地描述根据本申请的示例性实施方式。然而，这些示例性实施方式可以由多种不同的形式来实施，并且不应当被解释为只限于这里所阐述的实施方式。应 当理解的是，提供这些实施方式是为了使得本申请的公开彻底且完整，并且将这些示例性实施方式的构思充分传达给本领域普通技术人员，在附图中，为了清楚起见，有可能扩大了层和区域的厚度，并且使用相同的附图标记表示相同的器件，因而将省略对它们的描述。
结合图1至图9所示，根据本申请的具体实施例，提供了一种发动机风冷系统。
发动机风冷系统包括：发动机舱，发动机舱具有发动机舱进气口；发动机，发动机设置于发动机舱内，发动机包括发动机本体10，发动机本体10上设置有排气管11和增压器12；导流结构20，导流结构20设置于发动机舱内部，导流结构20具有导流通道30，导流通道30与发动机舱进气口连通，以将来自发动机舱进气口的气流导向排气管11和增压器12，以降低排气管11和增压器12的温度。
应用本发明的技术方案，通过设置导流结构，使得气流经过排气管和增压器，对排气管和增压器表面进行冷却，实现排气管和增压器表面的降温。相比于现有技术，仅需要增加导流结构，不需要改变发动机舱的原有结构，同时，不需要使用隔热材料，降低了生产制造成本，同时，如图6所示，发动机舱直接与车的底板相连，气流进入发动机舱后，通过底板进入地面，即将气流排出车体。
具体地，导流结构20包括第一导流结构21，第一导流结构21与发动机本体10的前端面连接，第一导流结构21与发动机舱进气口相对地设置。如图1所示，在发动机本体上设置有一凸起的圆柱块，圆柱块所处端面即为发动机的前端面，第一导流结构21与前端面连接并与发动机舱进气口相对设置，可便于气流从发动机舱进气口进入后由第一导流结构21进行导向，使得更多的气流经过排气管11和增压器12，实现更好的换热效果。
发动机本体10具有安装面，排气管11和增压器12设置于安装面上，导流结构20还包括第二导流结构22，第二导流结构22至少为两个，两个第二导流结构22相对地设置，且两个第二导流结构22均与安装面连接，排气管11和增压器12位于两个第二导流结构22之间。通过设置两个第二导流结构22，限制气流从两个第二导流结构22中通过，位于个第二导流结构22的排气管11和增压器12与气流充分接触，获得更好的换热效果。
优选地，第二导流结构为导流板体221，导流板体221的导流面沿竖直方向设置。导流板体221沿竖直方向设置，可阻挡气流在水平面上的分散，将气流聚集于两个导流板体221之间，沿水平方向流向排气管11和增压器12。
可选择地，安装面为V型结构，排气管11和增压器12设置于安装面相对的两个面之间。增压器12设置在V型结构的安装面之间，用于对发动机进气进行增压，排气管11设计在增压器12的后端，用于将发动机排气进行处理和引导，以使发动机排气进入空气。V型发动机的功率密度较大，排气管11和增压器12的散热压力也较大，在V型发动机上设置风冷系统，有利于获得更稳定的发动机性能。
导流结构20还包括导流罩23，导流罩23设置于发动机舱内，导流罩23罩设于发动机本体10、第一导流结构21和第二导流结构22的外侧，导流罩23的内表面与第一导流结构21 和第二导流结构22之间形成导流通道30，导流罩23具有与发动机舱进气口连通的导流进气口24，导流进气口24与第一导流结构21相对地设置。如图5所示，导流罩23的设置可对进入发动机舱的气流进行导向，导流罩23与第一导流结构21和第二导流结构22之间形成导流通道30，使得气流沿导流通道30流向排气管11和增压器12，实现对排气管11和增压器12的冷却效果。同时，导流罩23上开设的导流进气口24，可以使得气流从发动机舱进气口进入后顺利进入导流通道30。
优选地，导流罩23与发动机舱一体设置。在本申请的实施例中，导流罩23与发动机舱一体设置，可使得导流罩23与发动机舱之间的间隙更小，使得发动机舱的体积更小，在制造时一体化制成，有利于节省制造成本，提升生产效率。在实际应用中，可分别制造导流罩23和发动机舱后再进行装配。
具体地，导流罩23包括沿竖直方向设置的导流板段231，导流进气口24开设于导流板段231上，前端面与导流板段231相对地设置。如图5所示，前端面与导流板段231相对地设置极可实现对气流更好的引导效果，具体地，导流进气口24的形状可以为方形、圆形、椭圆形、多边形或其它异形形状。
优选地，第一导流结构21包括弧形导流本体211，弧形导流本体211与前端面连接，弧形导流本体211的弧面朝向导流进气口24一侧凸出地设置，弧形导流本体211的表面至前端面的距离沿竖直方向变化地设置。弧形导流本体211的设置可便于气流沿弧形导流本体211的表面进行流通，且弧形导流本体211的弧面朝向导流进气口24一侧凸出地设置，便于气流进入发动机舱后沿凸出部分进入导流通道。具体地，弧形导流本体211可以由金属薄板弯曲而成。
如图5所示，弧形导流本体211的表面至前端面的距离，沿竖直方向向上先逐渐增加后逐渐减小地设置。弧形导流本体211的表面至前端面的距离逐渐增大和逐渐减小，可使得弧形导流本体211的表面平滑，便于气流沿弧形导流本体211的表面流通，更好地实现对气流的导向作用。
具体地，弧形导流本体211外表面距离前端面最远位置处靠近导流进气口24的下边沿处设置。这样设置可使得较多的气流进入发动机舱后经弧形导流本体211外表面进入导流通道。可选择地，弧形导流本体211外表面距离前端面最远位置处可以为低于导流进气口24的下边沿的设置。
优选地，弧形导流本体211外表面距离前端面最远位置处位于导流进气口24的几何中心的下方。这样设置可使得更多的气流进入发动机舱后由于弧形导流本体211外表面距离前端面最远位置的阻挡进入导流通道，使得更多的气流经过排气管11和增压器12，获得更好的换热效果。
进一步地，至少部分的弧形导流本体211的外周侧设置有卷边25，卷边25的朝向导流进气口24一侧的表面形成导流面。在本申请的一个实施例中，全部弧形导流本体211的外周侧设置卷边25，可使得弧形导流本体211具有更好的导流效果，避免气流之间互相干扰。
具体地，弧形导流本体211与发动机的前端面之间形成空腔，弧形导流本体211的朝向发动机舱进气口一侧的外表面形成导流面，至少部分的弧形导流本体211的外周侧设置有卷边25，卷边25用于封堵空腔，可选择地，在本申请的一个实施例中，全部的弧形导流本体211的外周侧设置卷边25将空腔封堵。
可选择地，弧形导流本体211的至少一侧设置有密封挡板40，密封挡板40用于将空腔封堵。在本申请的一个实施例中，弧形导流本体211的两侧均设置密封挡板40，密封挡板40用于将空腔封堵。在实际应用时，密封挡板40可以为金属薄板。
可选地，第二导流结构22与安装面和导流罩23的顶部连接，或者，第二导流结构22的下端与安装面连接，第二导流结构22的上端与导流罩23的顶部具有距离地设置。当第二导流结构22与安装面和导流罩23的顶部连接时，可避免气流在流通时水平方向扩散，使得流经排气管11和增压器12的气流量更大。
根据本申请的另一具体实施例，提供了一种车辆，车辆包括发动机风冷系统，发动机风冷系统为上述实施例中的发动机风冷系统。
具体地，车辆包括进气格栅，进气格栅位于车辆的前端，发动机舱进气口与进气格栅的进气通道连通，以将来自车辆行进方向的气流从车辆的正前方导入导流通道30内与排气管11和增压器12进行热交换。通过将发动机舱进气口与进气格栅的进气通道连通，车辆行进时行进方向产生的气流(即自然风)可以通过进气格栅进入发动机舱用于对排气管11和增压器12进行冷却散热，这一设置相比于传统的冷却方式更节约成本，且发动机冷却系统结构简单，无需再对现有发动机的冷却系统进行改动，避免了在发动机舱中增加零件之间的距离而造成的发动机舱布置困难的问题。
上述发动机风冷系统可应用于汽车，汽车的发动机可以为V型发动机，V型发动机具有较小的高度和长度尺寸，体积较小，应用于汽车时更便于布置，且V型发动机可便于扩大汽缸直径来提高排量和功率，V型发动机也适合较高的汽缸数。由于V型发动机中的汽缸相对布置，可抵消部分振动，使得发动机运转更平顺，V型发动机在中高档车型中具有广阔的应用前景。
设置发动机风冷系统，通过对汽车行进过程中进入发动机舱的气流进行导流，将气流引导至排气管11和增压器12等在运行过程中温度较高的地方，对排气管11和增压器12进行降温冷却。
具体地，如图1所示，V型发动机所具有的气缸为两列且呈V型夹角设计，增压器12设计在V型夹角中间，串联在发动机和排气管11之间，用于回收排气能量，对发动机进气进行增压。排气管11设计在增压器12后端，用于将发动机排气进行处理并引导，使发动机排气排入空气。汽车还具有设计在汽车前端的进气格栅(图中未示出)，进气格栅用于对来自汽车行进方向的气流导进行导流。
如图5所示，汽车的发动机风冷系统包括发动机舱(图中未示出)、发动机本体10、弧形导流本体211、导流板体221和导流罩23。
发动机本体具有前端面，导流罩23与发动机舱一体化设置，导流罩23包括沿竖直方向设置的导流板段231，导流进气口24开设于导流板段231上且导流进气口24与开设于发动机舱上的发动机舱进气口(图中未示出)相对设置，导流板段231与发动机的前端面相对地设置。弧形导流本体211的表面至前端面的距离沿竖直方向向上先逐渐增加后逐渐减小地设置，且弧形导流本体211外表面距离前端面最远位置处位于导流进气口24的几何中心的下方。导流板体221的下端与发动机本体10上的V型结构的安装面连接，导流板体221的上端与导流罩23的顶部具有距离地设置，导流板体221的导流面沿竖直方向设置。
导流罩23的内表面与弧形导流本体211、导流板体221之间形成导流通道30。气流通过发动机舱进气口和导流进气口24进入发动机舱，沿弧形导流本体211的弧形表面进入导流通道30，经过排气管11和增压器12后排出发动机舱，导流通道30的设置使得尽量多的气流与排气管11和增压器12接触。实现最大冷却降温效果。
相比于水冷系统、增大发动机舱中零件距离或者增加隔热材料以实现降温效果的设置，本申请的技术方案可以充分利用汽车行进过程中产生的自然风，且不需要改变发动机结构和使用隔热材料，有效降低了生产制造成本，且实现了稳定良好的冷却降温效果。
可选择地，上述发动机风冷系统可应用于除V型发动机以外的其他发动机机型，例如直列型发动机(即L型发动机)、W型发动机、水平对置型发动机(即H型发动机)、转子型发动机(即R型发动机)和VR型发动机。
根据本申请的另一个实施例，提供了一种SUV(Sport/Suburban Utility Vehicle，运动型多用途SUV车辆)车辆，该车辆的发动机具有上述实施例中的发动机风冷系统，该车辆的发动机可以为V型发动机，V型发动机所送具有的气缸为两列且呈V型夹角设计，增压器12设计在V型夹角中间，串联在发动机和排气管11之间，用于回收排气能量，对发动机进气进行增压。排气管11设计在增压器12后端，用于将发动机排气进行处理并引导，使发动机排气排入空气。
具体地，如图1所示，发动机风冷系统包括发动机舱(图中未示出)、发动机本体10、弧形导流本体211、导流板体221和导流罩23。
发动机本体具有前端面，导流罩23与发动机舱一体化设置，导流罩23包括沿竖直方向设置的导流板段231，导流进气口24开设于导流板段231上且导流进气口24与开设于发动机舱上的发动机舱进气口(图中未示出)相对设置，导流板段231与发动机的前端面相对地设置。弧形导流本体211的表面至前端面的距离沿竖直方向向上先逐渐增加后逐渐减小地设置，且弧形导流本体211外表面距离前端面最远位置处位于导流进气口24的几何中心的下方。导流板体221的下端与发动机本体10上的V型结构的安装面连接，导流板体221的上端与导流罩23的顶部具有距离地设置，导流板体221的导流面沿竖直方向设置。
导流罩23的内表面与弧形导流本体211、导流板体221之间形成导流通道30。气流通过发动机舱进气口和导流进气口24进入发动机舱，沿弧形导流本体211的弧形表面进入导流通道30，经过排气管11和增压器12后排出发动机舱，导流通道30的设置使得尽量多的气流与排气管11和增压器12接触，实现最大冷却降温效果。
SUV车辆还具有设计在SUV车辆前端的进气格栅(图中未示出)，进气格栅用于对来自SUV车辆行进方向的气流导进行导流。本申请的技术方案可以充分利用SUV车辆行进过程中产生的自然风，且不需要改变发动机结构和使用隔热材料，有效降低了生产制造成本，且实现了稳定良好的冷却降温效果。
在本申请的另一个实施例中，上述实施例中的发动机风冷系统适用的交通工具中包括轿车，轿车具有的发动机可以为V型发动机，V型发动机所送具有的气缸为两列且呈V型夹角设计，增压器12设计在V型夹角中间，串联在发动机和排气管11之间，用于回收排气能量，对发动机进气进行增压。排气管11设计在增压器12后端，用于将发动机排气进行处理并引导，使发动机排气排入空气。
具体地，如图1所示，发动机风冷系统包括发动机舱(图中未示出)、发动机本体10、弧形导流本体211、导流板体221和导流罩23。
发动机本体具有前端面，导流罩23与发动机舱一体化设置，导流罩23包括沿竖直方向设置的导流板段231，导流进气口24开设于导流板段231上且导流进气口24与开设于发动机舱上的发动机舱进气口(图中未示出)相对设置，导流板段231与发动机的前端面相对地设置。弧形导流本体211的表面至前端面的距离沿竖直方向向上先逐渐增加后逐渐减小地设置，且弧形导流本体211外表面距离前端面最远位置处位于导流进气口24的几何中心的下方。导流板体221的下端与发动机本体10上的V型结构的安装面连接，导流板体221的上端与导流罩23的顶部具有距离地设置，导流板体221的导流面沿竖直方向设置。
导流罩23的内表面与弧形导流本体211、导流板体221之间形成导流通道30。气流通过发动机舱进气口和导流进气口24进入发动机舱，沿弧形导流本体211的弧形表面进入导流通道30，经过排气管11和增压器12后排出发动机舱，导流通道30的设置使得尽量多的气流与排气管11和增压器12接触，实现最大冷却降温效果。
轿车还具有设计在轿车前端的进气格栅(图中未示出)，进气格栅用于对来自轿车行进方向的气流导进行导流。本申请的技术方案可以充分利用轿车行进过程中产生的自然风，且不需要改变发动机结构和使用隔热材料，有效降低了生产制造成本，且实现了稳定良好的冷却降温效果。
在本申请的另一个实施例中，上述实施例中的发动机风冷系统适用的交通工具中包括MPV(Multi-Purpose Vehicle，多用途汽车)车辆，MPV车辆具有的发动机可以为V型发动机，V型发动机所送具有的气缸为两列且呈V型夹角设计，增压器12设计在V型夹角中间，串联在发动机和排气管11之间，用于回收排气能量，对发动机进气进行增压。排气管11设计在增压器12后端，用于将发动机排气进行处理并引导，使发动机排气排入空气。
具体地，如图1所示，发动机风冷系统包括发动机舱(图中未示出)、发动机本体10、弧形导流本体211、导流板体221和导流罩23。
发动机本体具有前端面，导流罩23与发动机舱一体化设置，导流罩23包括沿竖直方向设置的导流板段231，导流进气口24开设于导流板段231上且导流进气口24与开设于发动机舱上的发动机舱进气口(图中未示出)相对设置，导流板段231与发动机的前端面相对地设置。弧形导流本体211的表面至前端面的距离沿竖直方向向上先逐渐增加后逐渐减小地设置，且弧形导流本体211外表面距离前端面最远位置处位于导流进气口24的几何中心的下方。导流板体221的下端与发动机本体10上的V型结构的安装面连接，导流板体221的上端与导流罩23的顶部具有距离地设置，导流板体221的导流面沿竖直方向设置。
导流罩23的内表面与弧形导流本体211、导流板体221之间形成导流通道30。气流通过发动机舱进气口和导流进气口24进入发动机舱，沿弧形导流本体211的弧形表面进入导流通道30，经过排气管11和增压器12后排出发动机舱，导流通道30的设置使得尽量多的气流与排气管11和增压器12接触，实现最大冷却降温效果。
MPV车辆还具有设计在MPV车辆前端的进气格栅(图中未示出)，进气格栅用于对来自MPV车辆行进方向的气流导进行导流。本申请的技术方案可以充分利用MPV车辆行进过程中产生的自然风，且不需要改变发动机结构和使用隔热材料，有效降低了生产制造成本，且实现了稳定良好的冷却降温效果。
为了便于描述，在这里可以使用空间相对术语，如“在……之上”、“在……上方”、“在……上表面”、“上面的”等，用来描述如在图中所示的一个器件或特征与其他器件或特征的空间位置关系。应当理解的是，空间相对术语旨在包含除了器件在图中所描述的方位之外的在使用或操作中的不同方位。例如，如果附图中的器件被倒置，则描述为“在其他器件或构造上方”或“在其他器件或构造之上”的器件之后将被定位为“在其他器件或构造下方”或“在其他器件或构造之下”。因而，示例性术语“在……上方”可以包括“在……上方”和“在……下方”两种方位。该器件也可以其他不同方式定位(旋转90度或处于其他方位)，并且对这里所使用的空间相对描述作出相应解释。
除上述以外，还需要说明的是在本说明书中所谈到的“一个实施例”、“另一个实施例”、“实施例”等，指的是结合该实施例描述的具体特征、结构或者特点包括在本申请概括性描述的至少一个实施例中。在说明书中多个地方出现同种表述不是一定指的是同一个实施例。进一步来说，结合任一实施例描述一个具体特征、结构或者特点时，所要主张的是结合其他实施例来实现这种特征、结构或者特点也落在本发明的范围内。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种发动机风冷系统，其特征在于，包括：
    发动机舱，所述发动机舱具有发动机舱进气口；
    发动机，所述发动机设置于所述发动机舱内，所述发动机包括发动机本体(10)，所述发动机本体(10)上设置有排气管(11)和增压器(12)；
    导流结构(20)，所述导流结构(20)设置于所述发动机舱内部，所述导流结构(20)具有导流通道(30)，所述导流通道(30)与所述发动机舱进气口连通，以将来自所述发动机舱进气口的气流导向所述排气管(11)和所述增压器(12)，以降低所述排气管(11)和所述增压器(12)的温度。
  2. 根据权利要求1所述的发动机风冷系统，其特征在于，所述导流结构(20)包括第一导流结构(21)，所述第一导流结构(21)与所述发动机本体(10)的前端面连接，所述第一导流结构(21)与所述发动机舱进气口相对地设置。
  3. 根据权利要求2所述的发动机风冷系统，其特征在于，所述发动机本体(10)具有安装面，所述排气管(11)和增压器(12)设置于所述安装面上，所述导流结构(20)还包括：
    第二导流结构(22)，所述第二导流结构(22)至少为两个，两个所述第二导流结构(22)相对地设置，且两个所述第二导流结构(22)均与所述安装面连接，所述排气管(11)和所述增压器(12)位于两个所述第二导流结构(22)之间。
  4. 根据权利要求3所述的发动机风冷系统，其特征在于，所述第二导流结构为导流板体(221)，所述导流板体(221)的导流面沿竖直方向设置。
  5. 根据权利要求3所述的发动机风冷系统，其特征在于，所述安装面为V型结构，所述排气管(11)和所述增压器(12)设置于所述安装面相对的两个面之间。
  6. 根据权利要求3所述的发动机风冷系统，其特征在于，所述导流结构(20)还包括：
    导流罩(23)，所述导流罩(23)设置于所述发动机舱内，所述导流罩(23)罩设于所述发动机本体(10)、所述第一导流结构(21)和所述第二导流结构(22)的外侧，所述导流罩(23)的内表面与所述第一导流结构(21)和所述第二导流结构(22)之间形成所述导流通道(30)，所述导流罩(23)具有与所述发动机舱进气口连通的导流进气口(24)，所述导流进气口(24)与所述第一导流结构(21)相对地设置。
  7. 根据权利要求6所述的发动机风冷系统，其特征在于，所述导流罩(23)与所述发动机舱一体设置。
  8. 根据权利要求6所述的发动机风冷系统，其特征在于，所述导流罩(23)包括沿竖直方向设置的导流板段(231)，所述导流进气口(24)开设于所述导流板段(231)上，所述前端面与所述导流板段(231)相对地设置。
  9. 根据权利要求6所述的发动机风冷系统，其特征在于，所述第一导流结构(21)包括：
    弧形导流本体(211)，所述弧形导流本体(211)与所述前端面连接，所述弧形导流本体(211)的弧面朝向所述导流进气口(24)一侧凸出地设置，所述弧形导流本体(211)的表面至所述前端面的距离沿竖直方向变化地设置。
  10. 一种车辆，所述车辆包括发动机风冷系统，其特征在于，所述发动机风冷系统为权利要求1-9中任一项所述的发动机风冷系统，所述车辆包括进气格栅，所述进气格栅位于所述车辆的前端，所述发动机舱进气口与所述进气格栅的进气通道连通，以将来自所述车辆行进方向的气流导入所述导流通道(30)内与所述排气管(11)和所述增压器(12)进行热交换。
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