Engine cooling device, vehicle, and engine cooling method

Abstract

The application belongs to the technical field of vehicles, and discloses an engine cooling device, a vehicle and an engine cooling method. The engine cooling device comprises a shell, an inner wheel, a fan assembly, a belt pulley and a plurality of clutch assemblies. The clutch assemblies are used to switch and combine or separate the belt pulley and the inner wheel in different states of the engine, so that the engine cooling device is switched between two modes of engine driving and air storage mechanism driving. When the engine is running, the engine drives the belt pulley to drive the fan assembly to dissipate heat of the engine. After the engine is stopped, the air storage mechanism drives the fan assembly to dissipate heat of the engine, so that the engine can be cooled for a period of time after the engine is stopped, the heat of the engine is still rapidly dissipated after the engine is stopped, the engine temperature is rapidly reduced, the service life of plastic parts and moving parts of the engine periphery and the inside is prolonged, and the reliability of the engine is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to an engine cooling device, a vehicle and an engine cooling method. BACKGROUND

[0002] The cooling effect of the engine cooling device in the vehicle can directly affect the performance of the engine. The engine cooling device is usually driven by the engine. During the operation of the engine, the excessively high temperature can reduce the output performance of the engine, and even cause damage to the engine. After the engine is normally stopped or suddenly stopped due to failure, the engine cooling device also loses power and stops working.

[0003] In the current heavy truck, the engine generally has a large displacement and generates a lot of heat. Therefore, the heat needs to be dissipated in time to ensure that the engine works in a relatively reasonable temperature range, so as to ensure the normal operation of the engine. The cooling fan works with the engine, and after the engine is stopped, the fan also stops working. At this time, the engine still has a large amount of heat. The dissipation speed of the heat is greatly reduced due to the stop of the cooling fan, so that the temperature of the engine is difficult to quickly drop. In the long run, some plastic parts around and near the engine will be prematurely aged due to the continuous and repeated baking at high temperature. The moving parts inside the engine body and cylinder cover that need to be cooled may be deformed and shaft sintering due to the failure to dissipate heat in time, which reduces the reliability and indirectly causes sealing leakage and other problems. SUMMARY

[0004] The purpose of the present application is to provide an engine cooling device to solve the technical problem that the existing engine cooling device cannot continue to cool the engine after the engine is stopped.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] The engine cooling device comprises:

[0007] A housing is provided with an air inlet and an air outlet, and the air inlet can be in communication with a gas storage mechanism;

[0008] An inner wheel is rotationally arranged in the housing;

[0009] A fan assembly can be rotated when the gas storage mechanism blows air through the air inlet;

[0010] An inner wheel is rotationally arranged in the housing and fixedly connected with the fan assembly;

[0011] A pulley can be driven by the engine, one end of the pulley is rotationally arranged in the housing and sleeved on the outer side of one end of the inner wheel, and a plurality of accommodating cavities are formed between the pulley and the inner wheel;

[0012] A plurality of clutch assemblies are arranged in the accommodating cavities, and each of the clutch assemblies can selectively couple the pulley and the inner wheel, and when the engine drives the pulley to rotate, the clutch assemblies can couple the inner wheel and the pulley, and the pulley can drive the inner wheel and the fan assembly to rotate, and when the air storage mechanism drives the fan assembly and the inner wheel to rotate, the clutch assemblies can uncouple the inner wheel and the pulley, and the pulley cannot rotate with the inner wheel.

[0013] Preferably, the clutch assembly comprises an elastic member and a rolling body, the accommodating cavity is wedge-shaped, and the accommodating cavity comprises a coupling end and a separation end, one end of the elastic member is connected with the separation end, and the other end of the elastic member can abut against the rolling body, when the engine drives the pulley to rotate, the rolling body moves to the coupling end and can be clamped on the coupling end, and when the air storage mechanism drives the inner wheel to rotate, the rolling body moves to the separation end and compresses the elastic member, and at this time, the rolling body can rotate with the inner wheel.

[0014] Preferably, the elastic member is a compression spring.

[0015] Preferably, the fan assembly comprises a fan wheel, a rotating shaft and a fan, and the fan wheel, the rotating shaft, the fan and the inner wheel are fixedly connected, the fan wheel is located at the air inlet, and the air storage mechanism can drive the fan wheel to rotate.

[0016] Preferably, the engine cooling device further comprises a first bearing, an inner ring of the first bearing is fixedly connected with the inner wheel, and an outer ring of the first bearing is fixedly connected with the shell.

[0017] Preferably, the first bearing is a needle bearing.

[0018] Preferably, the fan assembly further comprises two second bearings, an inner ring of each of the second bearings is fixedly connected with the rotating shaft, and an outer ring of each of the second bearings is fixedly connected with the pulley.

[0019] Preferably, the second bearing is a tapered roller bearing.

[0020] The purpose of the present application is to provide a vehicle to solve the technical problem that the existing vehicle cannot continue to cool the engine after the engine is stopped.

[0021] To achieve this purpose, the present application adopts the following technical solutions:

[0022] The vehicle comprises the above-mentioned engine cooling device, and further comprises:

[0023] An engine is connected with the pulley through a belt, and the engine can drive the pulley to rotate;

[0024] A gas storage mechanism includes a first high-pressure gas tank, and a gas outlet of the first high-pressure gas tank is communicated with the gas outlet;

[0025] An air compressor is drivingly connected with the engine, and a gas inlet of the first high-pressure gas tank is communicated with a gas outlet of the air compressor;

[0026] A control valve is arranged between the first high-pressure gas tank and the gas inlet, and the control valve is configured to control the opening and closing of a gas path between the first high-pressure gas tank and the gas inlet.

[0027] The present application aims to provide an engine cooling method to solve the technical problem that the existing vehicle cannot continue to cool the engine after the engine is stopped.

[0028] To achieve this purpose, the present application adopts the following technical solutions:

[0029] The engine cooling method is used for cooling the engine of the vehicle, and includes:

[0030] When the engine is running, the engine drives the fan assembly to rotate to cool the engine, and the control valve is closed, and the engine can drive the air compressor to fill high-pressure gas into the first high-pressure gas tank;

[0031] When the engine is stopped, the control valve is opened, the first high-pressure gas tank blows high-pressure gas into the gas inlet, and drives the fan assembly to rotate to cool the engine.

[0032] Beneficial effects: the engine cooling device provided by the application comprises a shell, an inner wheel, a fan assembly, a belt pulley and a plurality of clutch assemblies. When the engine is running, the belt pulley is driven to rotate by the engine, the clutch assemblies in the accommodating cavity combine the belt pulley with the inner wheel when the belt pulley serves as the driving wheel, at this time, the inner wheel rotates with the belt pulley and drives the fan assembly to rotate to cool the engine; when the engine is stopped, the driving mechanism stops driving the belt pulley, at this time, the gas storage mechanism is used to blow gas to cool the engine, the gas storage mechanism blows gas into the shell through the gas inlet, and then the gas flows out of the shell through the gas outlet; the flowing gas blows the fan assembly to rotate, at this time, the clutch assemblies release the combination of the inner wheel and the belt pulley, so that the belt pulley does not rotate when the inner wheel rotates with the fan assembly, thereby avoiding damage to the driving mechanism. The engine cooling device provided by the application drives the fan assembly to cool the engine by the engine driving the belt pulley when the engine is running, and drives the fan assembly to cool the engine by the gas storage mechanism after the engine is stopped, so that the engine can be cooled for a period of time after the engine is stopped, the heat of the engine is still quickly dissipated after the engine is stopped, the engine temperature is quickly reduced, the service life of the plastic parts and moving parts of the engine is prolonged, and the reliability of the engine is improved.

[0033] The application also provides a vehicle comprising the above-mentioned engine cooling device, an engine, a gas storage mechanism, an air compressor and a control valve. When the engine is running, the engine drives the engine cooling device as a power source, the belt pulley drives the fan assembly to rotate for cooling, and at the same time, the control valve is kept closed when the engine is running, so that the engine can also drive the air compressor to store gas in the first high-pressure gas tank, the gas pressure in the first high-pressure gas tank gradually increases, and the first high-pressure gas tank serves as a power source for rotating the fan assembly after the engine is stopped; when the engine is stopped, the control valve is opened, and under the atmospheric pressure difference, the high-pressure gas stored in the first high-pressure gas tank is automatically sprayed to drive the fan to rotate and cool the engine. When the engine is running, the engine cooling device cools the engine, and at the same time, the engine can also store gas in the first high-pressure gas tank, so that the first high-pressure gas tank can automatically drive the fan assembly to rotate and cool the engine when the engine is stopped, so that the vehicle has a high degree of automation and can complete the cooling of the engine when the engine is running and stopped without additional operation, the aging speed of the engine parts and the engine peripheral parts is delayed, the service life of the engine is prolonged, and the reliability of the vehicle is improved.

[0034] The application further provides an engine cooling method for cooling the engine of the vehicle, when the engine is running, the engine drives the fan assembly to cool the engine as a power source; when the engine is stopped, the first high-pressure gas storage tank drives the fan assembly to cool the engine as a power source. The engine cooling method can provide good cooling effect for the engine when the engine is running and when the engine is stopped, ensure that the engine can continuously and quickly dissipate heat after the engine is stopped, delay the aging speed of the engine parts and the parts around the engine, prolong the service life of the engine, and improve the reliability of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a structural schematic view of an engine cooling device provided by the embodiment of the application;

[0036] Figure 2 is a sectional view of the engine cooling device provided by the embodiment of the application;

[0037] Figure 3 is a structural schematic view of a belt pulley and a clutch assembly provided by the embodiment of the application;

[0038] Figure 4 is a schematic view of the clutch assembly when the driving mechanism drives the belt pulley to rotate provided by the embodiment of the application;

[0039] Figure 5 is a schematic view of the clutch assembly when the gas storage mechanism drives the fan assembly to rotate provided by the embodiment of the application;

[0040] Figure 6 is a structural schematic view of a rotating shaft provided by the embodiment of the application;

[0041] Figure 7 is a schematic view of an inner wheel provided by the embodiment of the application;

[0042] Figure 8 is a structural schematic view of a vehicle provided by the embodiment of the application;

[0043] Figure 9 is a flow chart of an engine cooling method provided by the embodiment of the application.

[0044] In the drawings:

[0045] 1, housing; 11, air inlet; 12, air outlet; 13, mounting hole;

[0046] 2, inner wheel; 21, first annular protrusion; 22, limiting groove;

[0047] 3, fan assembly; 31, fan wheel; 32, rotating shaft; 321, limiting protrusion; 33, connecting disc; 34, fan; 35, bolt; 36, second bearing;

[0048] 4, belt pulley; 41, accommodating cavity; 411, combined end; 412, separated end; 42, second annular protrusion; 43, wheel groove;

[0049] 5, clutch assembly; 51, elastic member; 52, rolling element;

[0050] 6, first bearing;

[0051] 7, first blocking ring;

[0052] 8, second blocking ring;

[0053] 9, sealing ring;

[0054] 100, engine; 200, air storage mechanism; 201, first high-pressure air storage tank; 202, second high-pressure air storage tank; 300, air compressor; 400, control valve; 500, power supply; 600, switch; 700, gas using device. DETAILED DESCRIPTION

[0055] The application will be described in further detail below with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not to be used to limit the present application. It is also to be understood that, for the purpose of clarity, only those structures related to the present application are shown in the drawings.

[0056] In the description of the present application, unless explicitly defined and limited otherwise, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the present application, unless explicitly defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0058] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0059] The technical solutions of the present application will be further described below in conjunction with the drawings and through specific embodiments.

[0060] The cooling effect of the engine cooling device in a vehicle can directly affect the performance of the engine. The engine cooling device is usually driven by the engine. During engine operation, excessive temperature can reduce the output performance of the engine, and even cause damage to the engine. After the engine operation ends normally or suddenly stops due to failure, the engine cooling device will also lose power and stop working.

[0061] In current heavy trucks, the engine generally has a large displacement and generates a lot of heat. It is necessary to dissipate heat in time to ensure that the engine works in a relatively reasonable temperature range to ensure the normal operation of the engine. The cooling fan follows the engine operation, and the fan also stops working after the engine stops. At this time, the engine still retains a large amount of heat, which greatly reduces the dissipation speed after the cooling fan stops working, causing the temperature of the engine to be difficult to quickly drop. Over time, some plastic parts around and near the engine will prematurely age due to continuous and repeated baking at high temperatures. The moving parts inside the engine body and cylinder head that need to be cooled may be deformed due to overheating and shaft sintering due to the inability to dissipate heat in time, which reduces reliability and indirectly causes sealing leakage and other problems. The present embodiment provides an engine cooling device to solve the above problems.

[0062] Reference Figures 1-3 The present application provides an engine cooling device, comprising a gas storage mechanism 200, a housing 1, an inner wheel 2, a fan assembly 3, a belt pulley 4 and a plurality of clutch assemblies 5. The engine cooling device realizes the cooling effect after the engine 100 stops through the gas storage mechanism 200, ensuring that the engine 100 can also be quickly cooled after stopping, prolonging the service life of the engine 100 parts.

[0063] The shell 1 is provided with an air inlet 11 and an air outlet 12, the air inlet 11 can communicate with the gas storage mechanism 200; the inner wheel 2 is rotationally arranged in the shell 1; the fan assembly 3 is fixedly connected with the inner wheel 2, when the gas storage mechanism 200 blows air through the air inlet 11, the fan assembly 3 can be rotated; the belt pulley 4 can be driven by the engine 100, one end of the belt pulley 4 is rotationally arranged in the shell 1 and is sleeved on the outside of one end of the inner wheel 2, a plurality of accommodating cavities 41 can be formed between the belt pulley 4 and the inner wheel 2; one clutch assembly 5 is arranged in each accommodating cavity 41, the clutch assembly 5 can selectively combine the belt pulley 4 and the inner wheel 2, when the engine 100 drives the belt pulley 4 to rotate, the clutch assembly 5 can combine the inner wheel 2 and the belt pulley 4, the belt pulley 4 can drive the inner wheel 2 and the fan assembly 3 to rotate; when the gas storage mechanism 200 drives the fan assembly 3 and the inner wheel 2 to rotate, the clutch assembly 5 can release the combination of the inner wheel 2 and the belt pulley 4, and the belt pulley 4 will not rotate with the inner wheel 2.

[0064] The engine cooling device drives the belt pulley 4 to rotate by the engine 100 when the engine 100 is running, the clutch assembly 5 in the accommodating cavity 41 combines the belt pulley 4 and the inner wheel 2 when the belt pulley 4 acts as a driving wheel, at this time the inner wheel 2 rotates with the belt pulley 4 and drives the fan assembly 3 to rotate to cool the engine 100; when the engine 100 stops, the driving mechanism stops driving the belt pulley 4, at this time the gas storage mechanism 200 can be used to blow air to cool the engine 100, the gas storage mechanism 200 blows gas into the shell 1 through the air inlet 11, and then flows to the outside of the shell 1 through the air outlet 12, the flowing gas flow drives the fan assembly 3 to rotate, at this time the clutch assembly 5 releases the combination of the inner wheel 2 and the belt pulley 4, so that the belt pulley 4 does not rotate when the inner wheel 2 rotates with the fan assembly 3, avoiding damage to the driving mechanism. The engine cooling device provided by the application drives the fan assembly 3 to cool the engine 100 when the engine 100 is running, and drives the fan assembly 3 to cool the engine 100 after the engine 100 stops, ensuring that the engine 100 can be cooled for a period of time after the engine 100 stops, so that the heat of the engine 100 is quickly dissipated after the engine 100 stops, the temperature of the engine 100 is quickly reduced, the service life of the plastic parts and moving parts of the engine 100 is prolonged, and the reliability of the engine 100 is improved.

[0065] Further, the shell 1 is provided with a plurality of mounting holes 13, the plurality of mounting holes 13 are uniformly and spacedly arranged around the axis of the shell 1, and are used to connect the engine cooling device with other components through threaded connections, which are firm and easy to disassemble, facilitating cleaning and maintenance.

[0066] Reference Figures 4-5The clutch assembly 5 comprises an elastic member 51 and a rolling body 52, the accommodating cavity 41 is wedge-shaped, the accommodating cavity 41 comprises a combination end 411 and a separation end 412, one end of the elastic member 51 is connected with the separation end 412, the other end of the elastic member 51 can abut against the rolling body 52, when the driving mechanism drives the pulley 4 to rotate, the rolling body 52 moves to the combination end 411 and can be clamped on the combination end 411; when the gas storage mechanism 200 drives the inner wheel 2 to rotate, the rolling body 52 moves to the separation end 412 and compresses the elastic member 51, at this time, the rolling body 52 can rotate with the inner wheel 2.

[0067] The size of the rolling body 52 and the accommodating cavity 41 is not limited here, in the embodiment, the axis of the rolling body 52 is parallel to the axis of the inner wheel 2 and the pulley 4, the size of the combination end 411 should be smaller than the diameter of the rolling body 52, the rolling body 52 can be clamped on the combination end 411 when it is in the combination end 411; the size of the separation end 412 should be larger than the diameter of the rolling body 52, the rolling body 52 can rotate without being limited by the accommodating cavity 41 when it is in the separation end 412, and the rolling body 52 can rotate with the inner wheel 2.

[0068] Specifically, when the engine 100 is running, the driving mechanism drives the pulley 4 to rotate, at this time, under the action of inertia and the elastic force of the elastic member 51, the rolling body 52 moves to the combination end 411 and is clamped on the combination end 411, so that the pulley 4 and the inner wheel 2 can be combined together, at this time, the rolling body 52 plays a transmission role, the rotation of the pulley 4 is transmitted to the inner wheel 2 through the rolling body 52, so that the inner wheel 2 rotates with the pulley 4, and the fan assembly 3 also rotates with the inner wheel 2 to cool and heat the engine 100; when the fan assembly 3 is driven by the gas storage mechanism 200, the rotation of the fan assembly 3 drives the rolling body 52 to move to the separation end 412 and compress the spring, at this time, since the size of the separation end 412 is larger than the diameter of the rolling body 52, the rolling body 52 cannot be clamped on the separation end 412, and since the rolling body 52 is smooth on the circumferential side, the rolling body 52 can rotate with the rotation of the inner wheel 2, so that the pulley 4 cannot be driven to rotate, thereby avoiding damage to the driving mechanism in the closed state caused by the rotation of the pulley 4. Through the above-mentioned clutch assembly 5, the driving mechanism and the gas storage mechanism 200 can be quickly switched as the power source in different states of the engine 100, so that the cooling device can achieve the cooling effect when the engine 100 is running and when it is stopped, and the switching can be automatically completed without additional manual operation, which is simple and convenient.

[0069] Meanwhile, the above-mentioned clutch assembly 5 is a one-way clutch structure, which makes the appearance and volume of the engine cooling device not change greatly, and can be applied to more vehicle models, thereby increasing the applicability of the engine cooling device.

[0070] The type of the elastic member 51 is not limited herein, and in the embodiment, the elastic member 51 is a compression spring, which has a large compression stroke, and ensures that the rolling body 52 can accurately switch when the separation end 412 and the combination end 411.

[0071] The specific shape of the rolling body 52 is not limited herein, and in the embodiment, the rolling body 52 is cylindrical, so that the rolling body 52 can only rotate along its own axis, and when the inner wheel 2 rotates, the rolling body 52 can rotate around its own axis, and roll on the surface of the inner wheel 2. The two ends of the rolling body 52 are outwardly protruding and hemispherical, so that the surface of the rolling body 52 is smooth, and the rolling body 52 avoids causing wear to the inner wheel 2 or the belt pulley 4.

[0072] Specifically, the fan assembly 3 includes a fan wheel 31, a rotating shaft 32, and a fan 34, and the fan wheel 31, the rotating shaft 32, the fan 34, and the inner wheel 2 are fixedly connected. The fan wheel 31 is located at the air inlet 11, and the fan wheel 31 can be driven to rotate by the gas storage mechanism 200. The fan wheel 31 can convert the gas blown by the gas storage mechanism 200 into the rotation of the rotating shaft 32, so as to drive the fan 34 to rotate.

[0073] Further, the fan assembly 3 further includes a connecting disc 33, the fan 34 is connected with the rotating shaft 32 through the connecting disc 33, and the fan 34 and the connecting disc 33 are connected through bolts 35. The connection is firm and convenient to disassemble, and the fan 34 is easy to clean or replace.

[0074] The specific type of the fan 34 is not limited herein, and in the embodiment, the fan 34 is a rigid fan 34 commonly used in the art. The rotating speed of the fan 34 is consistent with the rotating speed of the rotating shaft 32, which is reliable and durable, and has low cost. In other embodiments, the fan 34 can also be an electrically controlled silicon oil fan 34, which is reliable and durable, and can adjust the rotating speed.

[0075] Reference Figures 6-7 The specific manner in which the rotating shaft 32 and the inner wheel 2 are fixedly connected is not limited herein, and in the embodiment, the rotating shaft 32 is provided with a limiting protrusion 321, and the inner wheel 2 is provided with a limiting recess 22. The limiting protrusion 321 is inserted into the limiting recess 22, so that the rotating shaft 32 can rotate with the inner wheel 2. When the engine 100 operates, the driving mechanism drives the belt pulley 4 to rotate, the rolling body 52 is in the combination end 411, and the inner wheel 2 is driven to rotate, and the inner wheel 2 drives the rotating shaft 32 to rotate through the limiting protrusion 321 and the limiting recess 22, so that the fan 34 works.

[0076] Further, the fan assembly 3 further comprises a first bearing 6, an inner ring of the first bearing 6 is fixedly connected with the inner wheel 2, and an outer ring of the first bearing 6 is fixedly connected with the shell 1, so that the inner wheel 2 can rotate smoothly with the shell 1, avoiding the influence of jamming on the rotation of the fan 34 or causing damage to the parts; at the same time, since the shaft 32 and the inner wheel 2 are connected through the limiting protrusion 321 and the limiting groove 22, when the gas storage mechanism 200 drives the fan wheel 31 and the shaft 32 to rotate, the inner wheel 2 will passively follow the shaft 32 to rotate, and the first bearing 6 can reduce wear and tear, increase mechanical efficiency, and improve the cooling effect of the engine cooling device when the engine 100 is stopped.

[0077] Here, the specific type of the first bearing 6 is not limited, and in the embodiment, the first bearing 6 is a needle bearing, which has small frictional resistance, small power consumption, high mechanical efficiency, and easy starting, so that the gas storage mechanism 200 can make the fan assembly 3 rotate better, and strengthen the cooling effect of the fan assembly 3 on the engine 100 when the engine 100 is stopped.

[0078] Further, the engine cooling device further comprises an annular first retainer ring 7 and a sealing ring 9, the shell 1 is provided with an annular first mounting groove, the first retainer ring 7 is arranged in the first mounting groove, and the outer surface of the inner wheel 2 is outwardly protruded to form an annular first annular protrusion 21, the first bearing 6 is arranged between the first retainer ring 7 and the first annular protrusion 21, and the first bearing 6 and the first retainer ring 7 cooperate to limit the first bearing 6, avoiding the first bearing 6 moving along the axial direction of the shaft 32. The sealing ring 9 is arranged on one side of the first retainer ring 7, which can play a sealing role to prevent dust from entering the accommodating cavity 41.

[0079] Further, the fan assembly 3 further comprises two second bearings 36, an inner ring of the second bearing 36 is connected with the shaft 32, and an outer ring of the second bearing 36 is connected with the belt pulley 4, when the engine 100 is stopped, the shaft 32 rotates but the belt pulley 4 does not rotate, the second bearing 36 makes the bearing rotate smoothly relative to the belt pulley 4, ensuring that the fan 34 operates efficiently, while avoiding the influence of bearing rotation on the rotation of the belt pulley 4, avoiding damage to the driving mechanism.

[0080] Here, the specific type of the second bearing 36 is not limited, and in the embodiment, the second bearing 36 is a tapered roller bearing, which has stable rotation and strong carrying capacity, can ensure that the gas storage mechanism 200 drives the shaft 32 to rotate without affecting the belt pulley 4, and makes the rotation of the shaft 32 more smooth, and the second bearing 36 cooperates with the first bearing 6, so that the limited gas storage capacity of the gas storage mechanism 200 can make the fan assembly 3 achieve better cooling effect, accelerate the rotation speed and air volume of the fan assembly 3.

[0081] Further, the engine cooling device further comprises two second retaining rings 8, the belt pulley 4 is further provided with a second annular protrusion 42, the second annular protrusion 42 is located between the two second bearings 36, and the two second retaining rings 8 are respectively located on the sides of the two second bearings 36 away from the second annular protrusion 42. The second annular protrusion 42 and the second retaining rings 8 jointly limit the movement of the two second bearings 36, so as to avoid the movement of the second bearings 36 in the axial direction.

[0082] With reference to Figure 8 The embodiment also provides a vehicle comprising the above engine cooling device, and the engine 100 assembly further comprises an engine 100, an air storage mechanism 200, an air compressor 300, and a control valve 400. The engine 100 is connected with the belt pulley 4 through a belt, and the engine 100 can drive the belt pulley 4 to rotate. The air storage mechanism 200 comprises a first high-pressure air tank 201, and the air outlet end of the first high-pressure air tank 201 is communicated with the air outlet 12. The air compressor 300 is drivingly connected with the engine 100, and the air inlet end of the first high-pressure air tank 201 is communicated with the air outlet end of the air compressor 300. The control valve 400 is arranged between the first high-pressure air tank 201 and the air inlet 11, and is configured to control the on-off connection between the first high-pressure air tank 201 and the air inlet 11.

[0083] When the engine 100 is running, the engine 100 drives the engine cooling device as a power source, the belt pulley 4 drives the fan assembly 3 to rotate for heat dissipation. Meanwhile, when the engine 100 is running, the control valve 400 is kept closed, and the engine 100 can also drive the air compressor 300 to store air in the first high-pressure air tank 201, so that the air pressure in the first high-pressure air tank 201 gradually increases. The first high-pressure air tank 201 serves as a power source for rotating the fan assembly 3 after the engine 100 stops. When the engine 100 stops, the control valve 400 is opened, and under the atmospheric pressure difference, the high-pressure gas stored in the first high-pressure air tank 201 can be automatically sprayed out to drive the fan 34 to rotate and cool the engine 100. The engine 100 assembly can store air in the first high-pressure air tank 201 while the engine cooling device cools the engine 100 when the engine 100 is running. When the engine 100 stops, the first high-pressure air tank 201 can automatically drive the fan assembly 3 to rotate and cool the engine 100. Therefore, the vehicle has a high degree of automation, and the cooling of the engine 100 when the engine 100 is running and when the engine 100 stops can be completed without additional operation. The aging speed of the engine 100 and the parts around the engine 100 is delayed, the service life of the engine 100 is prolonged, and the reliability of the vehicle is improved.

[0084] Specifically, one end of the belt pulley 4 extending out of the shell 1 is provided with a wheel groove 43, and the belt pulley 4 is sleeved outside the wheel groove 43. In this way, the friction between the belt pulley 4 and the wheel groove 43 can be enhanced, the mechanical efficiency can be improved, and the belt slip can be avoided.

[0085] Specifically, the engine 100 can enable the power supply 500 to supply power, and the power supply 500 is closed when the engine 100 is stopped. The specific control mode of the control valve 400 is not limited here. In this embodiment, the control valve 400 is electrically controlled, and the control valve 400 is connected with the power supply 500. When the power supply 500 is turned on, the control valve 400 is closed, and the gas in the first high-pressure gas tank 201 cannot be blown out. When the power supply 500 is turned off, the control valve 400 is opened, and at this time the gas in the first high-pressure gas tank 201 can be blown into the shell 1 through the air inlet 11 under the pressure difference, and drive the fan assembly 3 to rotate.

[0086] Further, the vehicle further comprises a pressure limiting valve, which is arranged on the control valve 400, and the pressure limiting valve is provided with a pressure preset value. When the pressure in the first high-pressure gas tank 201 decreases to the preset pressure value, the pressure limiting valve can return to cut off the gas flow.

[0087] Further, the vehicle further comprises a switch 600 arranged between the pressure limiting valve and the engine cooling device. When the engine 100 is frequently started and stopped, and the running time of each time is short, the temperature of the engine 100 is not obvious, or in winter or in a low temperature environment, the lower temperature can better cool the engine 100. At this time, the connection between the first high-pressure gas tank 201 and the air inlet 11 can be manually closed by closing the switch 600 to avoid the engine cooling device starting after the engine 100 is stopped, avoid unnecessary operation of the engine cooling device, reduce the wear and tear of the engine cooling device, and prolong the service life of the engine cooling device.

[0088] Further, the vehicle further comprises a second high-pressure gas tank 202, and the first high-pressure gas tank 201 and the second high-pressure gas tank 202 are not connected. The second high-pressure gas tank 202 is used for other gas devices 700, and the first high-pressure gas tank 201 is used for the engine cooling device. The first high-pressure gas tank 201 and the second high-pressure gas tank 202 are connected with the air compressor 300. When the engine 100 is running, the air compressor 300 can simultaneously charge the first high-pressure gas tank 201 and the second high-pressure gas tank 202, so as to ensure that the first high-pressure gas tank 201 can drive the fan assembly 3 to rotate when the engine 100 is stopped.

[0089] Reference Figure 9 The embodiment also provides an engine 100 cooling method for cooling the engine 100 of the vehicle, and the engine 100 cooling method comprises the following steps:

[0090] When the engine 100 is running, the engine 100 drives the fan assembly 3 to rotate to cool the engine 100, and the control valve 400 is closed, and the engine 100 drives the air compressor 300 to store high-pressure gas into the first high-pressure gas tank 201;

[0091] When the engine 100 is stopped, the control valve 400 is opened, and the first high-pressure gas tank 201 blows high-pressure gas into the air inlet 11 to drive the fan assembly 3 to rotate to cool the engine 100.

[0092] When the engine 100 is running, the engine 100 drives the fan assembly 3 to rotate to cool the engine 100; when the engine 100 is stopped, the first high-pressure gas tank 201 drives the fan assembly 3 to rotate to cool the engine 100. The engine 100 cooling method can provide good cooling effect for the engine 100 when the engine 100 is running and when the engine 100 is stopped, ensure that the engine 100 can continuously and quickly dissipate heat after being stopped, delay the aging speed of the engine 100 and the parts around the engine 100, prolong the service life of the engine 100, and improve the reliability of the vehicle.

[0093] Specifically, when the engine is stopped, the method further comprises:

[0094] When the switch 600 and the control valve 400 are opened, the first high-pressure gas tank 201 drives the fan assembly 3 to rotate.

[0095] When the switch 600 is opened, the passage between the control valve 400 and the air inlet 11 is opened, and the high-pressure gas stored in the first high-pressure gas tank 201 is blown to the fan assembly 3 through the air inlet 11 under the action of atmospheric pressure difference, so that the fan assembly 3 rotates to cool the engine 100. The switch 600 controls the opening and closing of the passage between the first high-pressure gas tank 201 and the air inlet 11, so that the engine cooling device can be artificially controlled to work or not. Without the need to cool the engine 100, the engine cooling device is prevented from working automatically, the wear of the engine cooling device is reduced, and the service life is prolonged.

[0096] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An engine cooling device, characterized by, The utility model relates to a kind of air-cooled engine, including: Shell (1) is provided with air inlet (11) and air outlet (12), the air inlet (11) can be communicated with gas storage mechanism (200); Fan assembly (3), the gas storage mechanism (200) is blown through the air inlet (11), can make the fan assembly (3) rotate; Inner wheel (2), rotation is arranged in the shell (1), is fixedly connected with the fan assembly (3); Pulley (4) can be driven by engine (100), one end of the pulley (4) is rotationally arranged in the shell (1) and is set on the outer side of one end of the inner wheel (2), and a plurality of accommodating cavities (41) are formed between the pulley (4) and the inner wheel (2); A plurality of clutch assemblies (5) are arranged in each of the accommodating cavities (41), the clutch assembly (5) can selectively combine the pulley (4) with the inner wheel (2), when the engine (100) drives the pulley (4) to rotate, the clutch assembly (5) can combine the inner wheel (2) with the pulley (4), the pulley (4) can drive the inner wheel (2) and the fan assembly (3) to rotate;When the gas storage mechanism (200) drives the fan assembly (3) and the inner wheel (2) to rotate, the clutch assembly (5) can release the combination of the inner wheel (2) and the pulley (4), and the pulley (4) will not follow the inner wheel (2) to rotate; Gas storage mechanism (200), including first high-pressure gas tank (201), the gas outlet end of the first high-pressure gas tank (201) and the air inlet (11) are communicated; Control valve (400) is arranged between the first high-pressure gas tank (201) and the air inlet (11), and the control valve (400) is configured to control the on-off of the gas path between the first high-pressure gas tank (201) and the air inlet (11); When the engine (100) stops, the control valve (400) is opened, the first high-pressure gas tank (201) blows high-pressure gas into the air inlet (11), drives the fan assembly (3) to rotate and cools the engine (100).

2. The engine cooling device according to claim 1, characterized by The clutch assembly (5) includes elastic member (51) and rolling body (52), the accommodating cavity (41) is wedge-shaped, the accommodating cavity (41) includes combination end (411) and separation end (412), one end of the elastic member (51) is connected with the separation end (412), the other end of the elastic member (51) can abut with the rolling body (52), when the engine (100) drives the pulley (4) to rotate, the rolling body (52) moves to the combination end (411) and can be clamped in the combination end (411);When the gas storage mechanism (200) drives the inner wheel (2) to rotate, the rolling body (52) moves to the separation end (412) and compresses the elastic member (51), at this time, the rolling body (52) can rotate with the inner wheel (2).

3. The engine cooling arrangement of claim 2, wherein The elastic member (51) is compression spring.

4. The engine cooling device according to claim 1, characterized by The fan assembly (3) comprises a fan wheel (31), a rotating shaft (32) and a fan (34), the fan wheel (31), the rotating shaft (32), the fan (34) and the inner wheel (2) are fixedly connected, the fan wheel (31) is located at the air inlet (11), and the air storage mechanism (200) can drive the fan wheel (31) to rotate.

5. The engine cooling arrangement of claim 4, wherein The engine cooling device further comprises a first bearing (6), an inner ring of the first bearing (6) is fixedly connected with the inner wheel (2), and an outer ring of the first bearing (6) is fixedly connected with the shell (1).

6. The engine cooling arrangement of claim 5, wherein The first bearing (6) is a needle bearing.

7. The engine cooling arrangement of claim 4, wherein The fan assembly (3) further comprises two second bearings (36), inner rings of the second bearings (36) are fixedly connected with the rotating shaft (32), and outer rings of the second bearings (36) are fixedly connected with the belt pulley (4).

8. The engine cooling arrangement of claim 7, wherein The second bearing (36) is a tapered roller bearing.

9. Vehicle comprising the engine cooling device according to any one of claims 1 to 8, characterized in that Further comprising: An engine (100) connected with the belt pulley (4) through a belt, the engine (100) can drive the belt pulley (4) to rotate; An air compressor (300) in driving connection with the engine (100), and an air inlet end of the first high-pressure air tank (201) is in communication with an air outlet end of the air compressor (300); 10. A method of cooling an engine (100) for use in a vehicle as claimed in claim 9, characterised in that, Further comprising: When the engine (100) operates, the engine (100) drives the fan assembly (3) to rotate to cool the engine (100), and the control valve (400) is closed, so that the engine (100) can drive the air compressor (300) to fill high-pressure gas into the first high-pressure air tank (201);

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