Air protection system of engine

Abstract

The invention discloses an engine air protection system which comprises a first air guide part, a second air guide part and a third air guide part, air is formed through the first air guide part and the second air guide part and guided to a first target area, heat dissipation is conducted on an engine or target equipment in the first target area, and the engine or target equipment in the first target area can be adjusted by operating an adjusting part. The air is guided by the adjusting piece to flow out at different angles, at the moment, the area of the area where the air flowing out of the second air guiding piece acts can be changed, and then the heat dissipation device adapts to heat dissipation operation of engines and target equipment of different sizes or different specifications, and the third air guiding piece is used for guiding the air to flow towards the second target area. When the first target area is subjected to heat dissipation operation, heat which cannot be covered by the first target area is more accurately dissipated, so that the heat dissipation effect of the whole engine compartment is improved, heat dissipation operation is stably and reliably provided, the vehicle performance is improved, vehicle development is facilitated, and the applicability of the air protection system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of engine thermal management, and in particular to an engine wind protection system. Background Art

[0002] The wind shield is one of the parts of heavy-duty vehicles. It is installed between the vehicle engine radiator and the cooling fan. The interior of the wind shield provides a channel for directional air flow, and the air passes through the radiator during the flow to enhance the radiator's heat dissipation capacity, and assists in cooling the engine by discharging the air to the engine cylinder.

[0003] In the prior art, the engine wind protection system is that the same model of automobile will be equipped with engines of different displacements or volumes during production. Moreover, with the development of technology and changes in the market, different types of new energy vehicles, such as pure electric vehicles, hybrid electric vehicles, plug-in hybrid vehicles, extended-range electric vehicles and fuel cell vehicles, can all be developed based on one model. When faced with engines of different displacements or volumes, or even different power layouts, the air outlet position of the fan wind shield of the existing engine is fixed, and can only dissipate heat at a fixed position of the engine, which will result in the heat dissipation effect of the engine failing to meet the set heat dissipation requirements. Summary of the invention

[0004] In view of the defects existing in the prior art, the present application provides an engine wind protection system to solve the problem of low applicability of the wind protection system in the prior art.

[0005] The above-mentioned purpose of the present application is mainly achieved through the following technical solutions:

[0006] A wind protection system for an engine, the wind protection system comprising:

[0007] a first air guide member, wherein a first channel is provided in the first air guide member;

[0008] a second air guide, the second air guide being arranged at one end of the first air guide, and the second air guide being provided with a second channel connected with the first channel so that air can flow from the first channel to the second channel, and the second air guide being provided with an adjusting member, and the adjusting member being movably connected with the second air guide to guide the air in the second channel to flow out to the first target area at different angles;

[0009] A third air guide member, one end of which is fixedly connected to the second air guide member, and the other end of which can extend to the second target area. A third channel connected to the second channel is provided in the third air guide member to allow air to flow to the first target area and / or the second target area.

[0010] In an optional embodiment, the adjusting member includes two groups of air guides, which are rotatably connected to the second air guide, and the two groups of air guides can rotate synchronously towards each other so that the air in the second channel can expand and flow out or gather and flow out toward the first target area.

[0011] In an optional embodiment, the air guide portion includes a plurality of air guide plates arranged in parallel and at intervals, and a connecting rod connecting the plurality of air guide plates.

[0012] In an optional embodiment, each of the air guide plates is rotatably arranged on the second air guide member via a hole pin connection.

[0013] In an optional embodiment, the adjusting member further includes a first driving member, and the first driving member is simultaneously connected to the air guiding portion and drives the air guiding portion to rotate synchronously.

[0014] In an optional embodiment, the first driving member includes a first slide fixed on the second air guide member, the first slide is provided with a traction part that can move back and forth, a push-pull rod and a swing rod are respectively provided between the traction part and each of the air guide parts, the push-pull part is hinged to the traction part and the swing rod, the swing rod is fixedly connected to the air guide part, and when the traction part slides back and forth on the first slide, the traction part drives the swing rod to rotate towards each other through the push-pull rod.

[0015] In an optional embodiment, the second air guide member is provided with a side air outlet connected to the third air guide member, the second air guide member is provided with an air collecting member, the air collecting member is provided with an air collecting space connected to the side air outlet, and the windward side of the air collecting member is provided with an openable and closable wind shield, when the wind shield is opened, air can enter the air collecting space and the third channel in sequence.

[0016] In an optional embodiment, the second air guide member is further provided with a second driving member connected to and controlling the opening and closing of the wind shield.

[0017] In an optional embodiment, a rubber seal is provided between the first air guide member and the second air guide member, a fixing frame is provided on the first air guide member, a plurality of fixing ears are provided on the fixing frame, and a fan assembly for driving directional air flow is provided in the second air guide member.

[0018] In an optional embodiment, a mounting bracket is provided between the second air guide member and the fan assembly, and a flexible shock-absorbing sleeve is provided between the mounting bracket and the second air guide member.

[0019] Compared with the prior art, the advantages of this application are:

[0020] The engine wind protection system in the present application includes a first air guide member, a second air guide member and a third air guide member. The first air guide member is provided with a first channel, the second air guide member is provided at one end of the first air guide member, and the second air guide member is provided with a second channel connected with the first channel, so that air can flow from the first channel to the second channel, the second air guide member is provided with an adjusting member, and the adjusting member is movably connected with the second air guide member to guide the air in the second channel to flow out to the first target area at different angles, one end of the third air guide member is fixedly connected to the second air guide member, and the other end can extend to the second target area, the third air guide member is provided with a third channel connected with the second channel, so that air flows to the first target area and / or the second target area. In actual arrangement, the first air guide member and the second air guide member form air guidance to the first target area, and the engine or target in the first target area is adjusted. The target equipment can be cooled, and the adjusting member can be operated to guide the air to flow out at different angles. At this time, the area of ​​the air flowing out of the second air guide member will change, thereby adapting to the cooling operation of engines and target equipment of different volumes or specifications. Moreover, the third air guide member is used to guide the air in the second channel to flow to the second target area. While cooling the first target area, the cooling operation of the second target area can also be selectively performed separately or simultaneously. In the case of vehicles with different power layouts, the wind protection system can be used to more accurately dissipate the heat that cannot be covered by the first target area, thereby improving the cooling effect of the entire engine compartment. Under the same vehicle model, engine systems of different specifications and volumes or engine systems of different energy types can provide heat dissipation operations stably and reliably, improve vehicle performance, facilitate vehicle development, and improve the applicability of the wind protection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic structural diagram of a wind protection system in a first direction is provided for an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of the wind protection system in the second direction is provided for the embodiment of the present application;

[0024] Figure 3 An explosion schematic diagram of a wind protection system is provided for an embodiment of the present application;

[0025] Figure 4A partial structural schematic diagram of a second air guide member is provided for an embodiment of the present application;

[0026] Figure 5 A partial structural schematic diagram of a first driving member is provided for an embodiment of the present application;

[0027] Figure 6 A structural schematic diagram of some components of the second air guide member is provided for an embodiment of the present application;

[0028] Figure 7 A structural schematic diagram of the end of a mounting frame is provided for an embodiment of the present application;

[0029] In the figure: 101, first air guide member; 102, second air guide member; 103, third air guide member; 201, air guide part; 202, air guide plate; 203, connecting rod; 204, first driving member; 301, first slideway; 302, traction part; 303, push-pull rod; 304, swing rod; 401, air collecting member; 402, wind shield plate; 403, side air outlet; 404, second driving member; 405, screw assembly; 501, rubber sealing member; 502, fixed frame; 503, fixed ear; 504, fan assembly; 505, mounting bracket; 506, flexible shock-absorbing sleeve. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0031] like Figure 1 , Figure 2 As shown, Figure 1 A schematic diagram of the structure of the wind protection system in the first direction is provided for the embodiment of the present application. Figure 2 A structural schematic diagram of a wind protection system in a second direction is provided for an embodiment of the present application, a wind protection system for an engine, the wind protection system comprising a first wind guide 101, a second wind guide 102, and a third wind guide 103, wherein:

[0032] like Figure 1 , Figure 2As shown, a first channel is provided in the first air guide member 101, and the first air guide member 101 is installed on the vehicle frame through connecting fixings, and is fixedly arranged correspondingly according to the arrangement and combination of the engine and related heat-generating components in the vehicle body, and a through-arrangement is provided between the two ends of the first air guide member 101 to form a smooth and continuous first channel, so that the air for heat dissipation can smoothly enter the first channel of the first air guide member 101, and under the aggregation and guidance of the first air guide member 101, can flow out from the other end of the first channel for heat exchange operation.

[0033] like Figure 1 , Figure 2 As shown, the second air guide member 102 is arranged at one end of the first air guide member 101, and the second air guide member 102 is provided with a second channel connected to the first channel, so that air can flow from the first channel to the second channel, and the second air guide member 102 is provided with an adjusting member, and the adjusting member is movably connected to the second air guide member 102, so as to guide the air in the second channel to flow out to the first target area at different angles.

[0034] like Figure 1 , Figure 2 As shown, correspondingly, the second air guide member 102 is fixedly connected to one end of the air outlet of the first air guide member 101, and in order to maintain the installation stability of the second air guide member 102, the second air guide member 102 can be directly fixedly connected to the frame, and a through-connection is provided between the two ends of the second air guide member 102 to form a second channel stably connected to the first channel, and the air enters the second channel from the first channel to perform the restraint and guidance operation of the adjusting member on the second air guide member 102 on the air.

[0035] It should be noted that the movable adjustment of the adjustment member on the second air guide member 102 can guide the air in the second channel to flow out at different angles according to the set requirements, and blow the air out in a gathered state or an outwardly expanded state, thereby adjusting the blown air to meet the heat dissipation needs of engines of different specifications.

[0036] like Figure 1 , Figure 2 As shown, one end of the third air guide member 103 is fixedly connected to the second air guide member 102, and the other end can extend to the second target area. A third channel connected to the second channel is provided in the third air guide member 103 to allow air to flow to the first target area and / or the second target area.

[0037] The air passes through the first channel and the second channel in sequence and then blows toward the heat-generating component. According to operational needs and heat dissipation purposes, the third air guide 103 can be operated to make the air pass through the first channel, the second channel and the third channel in sequence and then blow toward the heat-generating component, thereby making greater use of the directional constraint of the heat-generating air to the heat-generating area and improving the precise implementation of the heat-dissipating operation.

[0038] In an optional embodiment, the working principle of the wind protection system of the engine in the present application is: the wind protection system includes a first wind guide 101, a second wind guide 102 and a third wind guide 103, the first wind guide 101 is provided with a first channel, the second wind guide 102 is provided at one end of the first wind guide 101, and the second wind guide 102 is provided with a second channel connected to the first channel, so that air can flow from the first channel to the second channel, the second wind guide 102 is provided with an adjusting member, and the adjusting member is movably connected to the second wind guide 102 to guide the air in the second channel to flow out to the first target area at different angles, one end of the third wind guide 103 is fixedly connected to the second wind guide 102, and the other end can extend to the second target area, the third wind guide 103 is provided with a third channel connected to the second channel, so that air flows to the first target area and / or the second target area, in actual arrangement, through the first wind guide 101 and the second wind guide 102 The air is guided to the first target area, and the engine or target equipment in the first target area is cooled. The adjusting member can be operated to guide the air to flow out at different angles. At this time, the area acted on by the air flowing out of the second air guide member 102 will change, thereby adapting to the heat dissipation operation of engines and target equipment of different volumes or specifications. Moreover, the third air guide member 103 is used to guide the air in the second channel to flow to the second target area. While the heat dissipation operation is being performed on the first target area, the heat dissipation operation of the second target area can also be selectively performed separately or simultaneously. In the case of vehicle models with different power layouts, the use of the wind protection system can more accurately dissipate the heat that cannot be covered by the first target area, thereby improving the heat dissipation effect of the entire engine compartment. Under the same vehicle model, engine systems of different specifications and volumes or engine systems of different energy types can provide heat dissipation operations stably and reliably, improve vehicle performance, facilitate vehicle development, and improve the applicability of the wind protection system.

[0039] like Figure 2 , Figure 3 as well as Figure 4 As shown, Figure 3 A schematic diagram of an explosion of a wind protection system is provided for the embodiment of the present application. Figure 4A partial structural schematic diagram of the second air guide member 102 is provided for an embodiment of the present application. In an optional embodiment, the adjusting member includes two groups of air guide portions 201, and the two groups of air guide portions 201 are rotatably connected to the second air guide member 102, and the two groups of air guide portions 201 can rotate synchronously towards each other to allow the air in the second channel to expand and flow out or gather and flow out toward the first target area.

[0040] Specifically, when operating the adjustment member, the operating adjustment portion rotates on the second air guide member 102, and rotates to different angles through the air guide member 201, thereby forming a directional constraint and guidance for the blown air. When the two groups of air guide members 201 are adjusted and rotated at the same time, the relative angle between the two groups of air guide members 201 also changes synchronously, thereby allowing the air blown out of the second air guide member 102 to expand outward or gather.

[0041] In parallel, the adjustment member can also be set as a pipe section that can be stretched outward or retracted inward, and the air outlet area can be changed by operating the pipe section to expand outward or retract inward, so as to change the area of ​​the heat exchange operation area.

[0042] like Figure 2 , Figure 4 As shown, in an optional embodiment, the air guide portion 201 includes a plurality of air guide plates 202 arranged in parallel and at intervals, and a connecting rod 203 connecting the plurality of air guide plates 202 .

[0043] Specifically, a plurality of parallel and spaced air guide plates 202 form an air guide portion 201, and the gaps between the air guide plates 202 are spaces for air to flow out. As the angles of adjacent air guide plates 202 change, the air blown out from the gaps between the air guide plates 202 can be constrained to a target direction and position, thereby achieving the effect of air guiding.

[0044] Each air guide portion 201 is connected to a plurality of air guide plates 202 via a connecting rod 203. Under the action of the connecting rod 203, each air guide plate 202 is kept rotating in the same direction and at the same angle at the same time, thereby improving uniformity. Moreover, in controlling the air guide portion 201, the driving components of the air guide portion 201 can be simply and conveniently set, and a single air guide plate 202 can be controlled as a power input. Under the action of the air guide plate 202 and the connecting rod 203, the synchronous rotation of the plurality of air guide plates 202 can be operated.

[0045] In an optional embodiment, each of the air guide plates 202 is rotatably disposed on the second air guide member 102 via a hole pin connection.

[0046] like Figure 4 , Figure 5 As shown, Figure 5A partial structural schematic diagram of the first driving member 204 is provided for an embodiment of the present application. In an optional embodiment, the adjusting member further includes a first driving member 204, and the first driving member 204 is simultaneously connected to the air guide portion 201 and drives the air guide portion 201 to rotate synchronously.

[0047] like Figure 4 , Figure 5 As shown, in an optional embodiment, the first driving member 204 includes a first slide 301 fixed on the second air guide member 102, and a reciprocating traction part 302 is provided on the first slide 301, and a push-pull rod 303 and a swing rod 304 are respectively provided between the traction part 302 and each of the air guide parts 201, and the push-pull part is hinged to the traction part 302 and the swing rod 304, respectively, and the swing rod 304 is fixedly connected to the air guide part 201, and when the traction part 302 slides reciprocatingly on the first slide 301, the traction part 302 drives the swing rod 304 to rotate toward each other through the push-pull rod 303.

[0048] The traction part 302 reciprocates on the first slideway 301 , and drives the swing rod 304 on the air guide part 201 to rotate through the push-pull rod 303 on the traction part 302 , so as to form a desired rotation state.

[0049] It should be noted that the displacement operation of the traction part 302 on the first slideway 301 can be completed by a linear drive displacement of the traction part 302 through a screw structure, or by a linear push-pull displacement of the traction part 302 through an electric drive push mechanism.

[0050] The first driving member 204 can also directly use a driving motor to operate. The first driving member 204 outputs power to the two air guides 201 at the same time, and can use the arrangement of the number of meshing gears and gears to drive the two air guides 201 to rotate synchronously.

[0051] like Figure 6 As shown, Figure 6 A structural schematic diagram of some components of the second air guide member 102 is provided for an embodiment of the present application. In an optional embodiment, the second air guide member 102 is provided with a side air outlet 403 connected to the third air guide member 103, and the second air guide member 102 is provided with an air collecting member 401. The air collecting member 401 is provided with an air collecting space connected to the side air outlet 403, and the windward side of the air collecting member 401 is provided with an openable and closable wind shield plate 402. When the wind shield plate 402 is opened, air can enter the air collecting space and the third channel in sequence.

[0052] The second air guide member 102 is connected to the third air guide member 103 through the side air outlet 403, and the air enters the third channel of the third air guide member 103 through the side air outlet 403. The wind shield 402 is operated to be opened or closed according to the layout or operating conditions. When the wind shield 402 is opened, the air in the second channel can flow into the air collecting space of the air collecting member 401, and after continuously passing through the third channel, it flows out from one end of the third air guide member 103 to perform heat dissipation on the second target area. When the wind shield 402 is closed, one side of the air collecting space is blocked by the wind shield 402, and the air in the second channel directly flows out from the second air guide member 102 to perform heat dissipation on the first target area. Different heat dissipation control operations can be performed under different working conditions.

[0053] like Figure 6 As shown, in an optional embodiment, the second air guide member 102 is further provided with a second driving member 404 connected to and controlling the opening and closing of the wind shield 402. The second driving member 404 is connected to and controls the opening or closing of the wind shield 402. When the wind shield 402 is arranged to rotate to open and close, the second driving member 404 can use a rotating motor. When the wind shield 402 is arranged to translate to open and close, the second driving member 404 can use a linear drive.

[0054] like Figure 1 , Figure 2 as well as Figure 3 As shown, in an optional embodiment, a rubber seal 501 is provided between the first air guide 101 and the second air guide 102, a fixing frame 502 is provided on the first air guide 101, a plurality of fixing ears 503 are provided on the fixing frame 502, and a fan assembly 504 for driving directional air flow is provided in the second air guide 102.

[0055] The fan assembly 504 provides power for directional air flow and can improve heat dissipation capacity under different working conditions. The rubber seal 501 ensures the connection reliability between the first air guide 101 and the second air guide 102 and improves the stability of directional air flow. The shape of the fixed frame 502 and the number and position of the fixed ears 503 are all arranged according to the corresponding fixed points of the frame.

[0056] like Figure 1 , Figure 2 as well as Figure 3 As shown, in an optional embodiment, a mounting frame 505 is provided between the second air guide member 102 and the fan assembly 504, and a flexible shock-absorbing sleeve 506 is provided between the mounting frame 505 and the second air guide member 102. Figure 7 As shown, Figure 7A structural schematic diagram of the end of the mounting frame 505 is provided for the embodiment of the present application. When the fan assembly 504 is in dynamic operation, the mounting frame 505 provides a stable connection foundation, and the flexible shock-absorbing sleeve 506 can provide a transmission buffer between the relative vibration generated by the fan assembly 504 and the second air guide member 102, thereby avoiding the overall vibration of the second air guide member 102 and improving reliability.

[0057] It should be understood that the terms first, second, etc. are only used to distinguish descriptions and should not be understood as indicating or suggesting relative importance. Although the terms first, second, etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another unit. For example, the first unit may be referred to as the second unit, and similarly, the second unit may be referred to as the first unit without departing from the scope of the exemplary embodiments of the present invention.

[0058] It should be understood that the term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another relationship between associated objects, indicating that two relationships may exist. For example, A / and B can represent two situations: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0059] It should be understood that in the description of the present invention, the terms "upper", "vertical", "inside", "outside" and the like indicate orientations or positional relationships that are customarily placed when the disclosed product is used, or are orientations or positional relationships that are customarily understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0060] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The terms used herein are only used to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates the opposite meaning. It should also be understood that the terms "include", "comprising", "including", and / or "comprising" when used herein specify the existence of the claimed features, integers, steps, operations, units, and / or components, and do not exclude the existence or increase of one or more other features, quantities, steps, operations, units, components, and / or their combinations.

[0062] Specific details are provided in the following description to facilitate a complete understanding of the exemplary embodiments. However, it should be understood by those of ordinary skill in the art that the exemplary embodiments may be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail to avoid making the exemplary embodiments unclear.

[0063] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[0064] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field.

Claims

1. An engine wind protection system, characterized in that: The wind protection system comprises: a first air guide member, wherein a first channel is provided in the first air guide member; a second air guide, the second air guide being arranged at one end of the first air guide, and the second air guide being provided with a second channel connected with the first channel so that air can flow from the first channel to the second channel, and the second air guide being provided with an adjusting member, and the adjusting member being movably connected with the second air guide to guide the air in the second channel to flow out to the first target area at different angles; A third air guide member, one end of which is fixedly connected to the second air guide member, and the other end of which can extend to the second target area. A third channel connected to the second channel is provided in the third air guide member to allow air to flow to the first target area and / or the second target area.

2. The engine wind protection system as claimed in claim 1, characterized in that: The regulating member includes two groups of air guides, which are rotatably connected to the second air guide, and the two groups of air guides can rotate synchronously towards each other, so that the air in the second channel can expand and flow out or gather and flow out toward the first target area.

3. The wind protection system for an engine as claimed in claim 2, characterized in that: The wind guide portion includes a plurality of wind guide plates which are arranged in parallel and at intervals, and a connecting rod connecting the plurality of wind guide plates.

4. The engine wind protection system as claimed in claim 3, characterized in that: Each of the air guide plates is rotatably arranged on the second air guide member through a hole pin connection.

5. The engine wind protection system as claimed in claim 2, characterized in that: The adjusting member also includes a first driving member, which is simultaneously connected to the air guiding portion and drives the air guiding portion to rotate synchronously.

6. The wind protection system for an engine as claimed in claim 5, characterized in that: The first driving member includes a first slide fixed on the second air guide member, the first slide is provided with a traction part that can move back and forth, a push-pull rod and a swing rod are respectively provided between the traction part and each of the air guide parts, the push-pull part is hinged on the traction part and the swing rod, the swing rod is fixedly connected to the air guide part, and when the traction part slides back and forth on the first slide, the traction part drives the swing rod to rotate toward each other through the push-pull rod.

7. The engine wind protection system as claimed in claim 1, characterized in that: The second air guide member is provided with a side air outlet connected to the third air guide member, the second air guide member is provided with an air collecting member, the air collecting member is provided with an air collecting space connected to the side air outlet, and the windward side of the air collecting member is provided with an openable and closable wind shield plate, when the wind shield plate is opened, air can enter the air collecting space and the third channel in turn.

8. The engine wind protection system as claimed in claim 7, characterized in that: The second wind guide member is also provided with a second driving member connected to and controlling the opening and closing of the wind shield.

9. The engine wind protection system as claimed in claim 1, characterized in that: A rubber seal is provided between the first air guide and the second air guide. A fixing frame is provided on the first air guide. A plurality of fixing ears are provided on the fixing frame. A fan assembly for driving directional air flow is provided in the second air guide.

10. The engine wind protection system as claimed in claim 9, characterized in that: A mounting frame is provided between the second air guide member and the fan assembly, and a flexible shock-absorbing sleeve is provided between the mounting frame and the second air guide member.

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