Motorcycle engine capable of rapidly dissipating heat

Abstract

The invention relates to the technical field of motorcycle engines, and provides a fast heat dissipation motorcycle engine which comprises an upper case and a lower case, the upper case is installed at the top of the lower case and is internally through, and a power output shaft in butt joint with the output end of an engine body is arranged in the center of the case wall of one side of the lower case. A speed reduction transmission part in butt joint with the power output shaft is further installed in the lower machine box, an air outlet is formed in the bottom of the lower machine box, a cooling fan is installed in the air outlet, and the cooling fan is connected with the speed reduction transmission part. The heat dissipation scheme of the motorcycle engine is a set of highly-integrated, self-driven and intelligent heat management solution. A plurality of functional modules of air cooling self-dispersing heat dissipation, liquid cooling intelligent adjustment, precise air filtration and efficient transmission reversing are creatively and organically integrated, and the comprehensive effects that basic heat dissipation is guaranteed, dynamic heat dissipation can be adjusted, and the internal environment is clean are achieved on the premise of not depending on external additional energy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motorcycle engines, in particular to a motorcycle engine with rapid heat dissipation. BACKGROUND

[0002] As the core power source of the whole vehicle, the motorcycle engine generates a large amount of heat due to fuel combustion and component friction during operation. If the heat cannot be dissipated in time and effectively, it will lead to high engine temperature, and further cause a series of problems such as lubricating oil performance degradation, intensified thermal deformation of parts, accelerated wear, seal failure, etc., which seriously affect the power output stability, fuel economy, reliability and service life of the engine.

[0003] At present, the common motorcycle engine heat dissipation methods mainly include:

[0004] Natural air cooling: relying on the air flow when the motorcycle is running and the heat dissipation fins of the engine shell to dissipate heat. This method has simple structure and low cost, but the heat dissipation efficiency completely depends on the vehicle speed. In the low-speed and high-load working conditions (such as climbing and urban congestion), the air flow is insufficient, which easily leads to overheating of the engine.

[0005] Forced air cooling: blowing air to the engine cylinder, cylinder head and other parts by a fan directly or indirectly driven by the crankshaft. This method is improved compared with natural air cooling, but the air flow is usually dispersed, the air duct design is not systematic, and the fan speed is strongly related to the engine speed. The heat dissipation capacity is still limited at low speed. At the same time, the fan is directly exposed to the outside, which is easy to suck in dust and debris.

[0006] In addition, the air intake system of the existing air-cooled engine mainly serves the engine combustion chamber, and there is often a lack of effective filtering measures for the air entering the engine box for cooling the transmission components and the internal space. Dust, sand and other pollutants entering the box with cooling air will accelerate the wear of gears, bearings and other transmission components, affecting their service life and running smoothness.

[0007] Therefore, there are the following contradictions and deficiencies in the prior art that need to be solved urgently: how to provide a high-efficiency, active, non-vehicle-speed-dependent and internal-clean-protected heat dissipation solution for motorcycle engines (especially small and medium displacement and cost-sensitive application scenarios) without excessively increasing system complexity, cost and weight. This requires the heat dissipation system to be self-driven, form high-efficiency directional air flow, effectively isolate external pollutants, and dynamically adjust the heat dissipation intensity according to the engine load to further improve the heat dissipation adaptability. SUMMARY

[0008] In order to overcome the defects of the prior art, the purpose of the present application is to provide a motorcycle engine with rapid heat dissipation.

[0009] To achieve the object, the technical scheme of the present application is implemented as follows: a motorcycle engine with rapid heat dissipation comprises an upper engine case and a lower engine case, the upper engine case is installed on the top of the lower engine case and is internally through, a power output shaft is arranged at the center of one side wall of the lower engine case and is opposite to the output end of the engine body, a speed reduction transmission member is also installed in the lower engine case and is opposite to the power output shaft, an air outlet is formed at the bottom of the lower engine case, a heat dissipation fan is installed in the air outlet and is connected with the speed reduction transmission member; a liquid cooling liquid supply assembly is assembled on the side of the outer portion of the upper engine case, the liquid cooling liquid supply assembly is connected with the liquid guide channel in the internal portion of the spiral flow guide heat dissipation fin arranged on the wall of the upper engine case; a photoelectric type rotating speed sensor is also installed in the lower engine case, the rotating speed of the output end of the engine body is monitored in real time and is transmitted to the liquid cooling liquid supply assembly; a temperature control system is further included, the temperature control system comprises an intelligent temperature control unit, the intelligent temperature control unit is electrically connected with the photoelectric type rotating speed sensor and the liquid cooling liquid supply assembly, and is used for dynamically adjusting the working state of the liquid cooling liquid supply assembly according to the rotating speed of the engine.

[0010] Preferably, the speed reduction transmission member comprises a planetary gear pair and a steering transmission gear pair, the center of the planetary gear pair is opposite to the power output shaft, the input end of the steering transmission gear pair is connected with the planetary gear pair, and the output end is connected with the heat dissipation fan.

[0011] Preferably, the planetary gear pair comprises a gear one, a gear two and a gear ring one, the gear one is fixedly sleeved on the power output shaft, the gear two is surrounded and engaged around the gear one, and the gear ring one is engaged on the outer side of the three gear twos, and the gear ring one is used as the power output end structure of the steering transmission gear pair.

[0012] Preferably, the steering transmission gear pair comprises a gear ring two, a gear three, a butt joint shaft, a bevel gear one, a bevel gear two and a rotating shaft, the gear ring two is connected with the output end of the planetary gear pair, the gear three is engaged with the inner ring of the gear ring two, the front end of the butt joint shaft is opposite to the gear three, the rear end is opposite to the bevel gear one, the bevel gear two is vertically engaged with the bevel gear one, the top end of the rotating shaft is opposite to the center of the bevel gear two, and the bottom end is opposite to the shaft center of the heat dissipation fan.

[0013] Preferably, the top end of the upper engine case is provided with an air inlet, the internal portion of the air inlet is clamped with an air inlet filter member, and the internal wall of the upper engine case is provided with a spiral flow guide heat dissipation fin.

[0014] Preferably, the air inlet filter member comprises a clamping frame and a filter core group, the clamping frame is inserted into the air inlet, the filter core group is installed in the internal portion of the clamping frame and is composed of a first filter core, a second filter core, a third filter core and a fourth filter core, and the first filter core, the second filter core, the third filter core and the fourth filter core are sequentially distributed from top to bottom.

[0015] Preferably, the primary filter core is a metal wire woven mesh layer with a mesh aperture of 0.8-1.2 mm; the secondary filter core is a non-woven fabric filter layer; the tertiary filter core is an activated carbon fiber felt layer; and the quaternary filter core is a high polymer microporous filter membrane layer with an average pore size of 5-10 microns.

[0016] Preferably, the liquid cooling liquid supply assembly comprises a circulating liquid pump and a liquid guide pipe, the circulating liquid pump is arranged outside the upper machine box, and the liquid guide pipe has two liquid guide pipes respectively connected to the liquid inlet end and the liquid outlet end of the circulating liquid pump and connected to the liquid guide channels arranged in the spiral liquid guide cooling fins.

[0017] Preferably, the intelligent temperature control unit is internally provided with a control module and a data storage module, and the control module is configured to: when the photoelectric speed sensor detects that the engine speed exceeds a first preset threshold, control the circulating liquid pump to operate at a first gear power; and when it is detected that the engine speed exceeds a higher second preset threshold, control the circulating liquid pump to switch to a second gear power with higher flow rate, so as to realize stepwise active liquid cooling based on the engine load state.

[0018] The beneficial effects of the present application are embodied in:

[0019] I. Dual cooling of air cooling and liquid cooling, greatly improved cooling efficiency and adaptability

[0020] Power self-driven air cooling, stable and reliable basic cooling: ingeniously utilizing the engine's own power output, the built-in reduction drive system drives the cooling fan, realizing "self-power supply" of the cooling system without additional energy consumption. Through forced suction by the fan, a directional air duct of "top air inlet-bottom air outlet" is formed in the box, and the air flow intensity and stability are much higher than those of traditional passive cooling, which can effectively prevent engine overheating, especially in low-speed and high-load conditions, and solves the pain point of traditional air cooling relying on vehicle speed.

[0021] Intelligent liquid cooling cooperation, dynamic adaptation to load changes: the newly added liquid cooling liquid supply assembly cooperates with the liquid guide channels of the spiral liquid guide cooling fins to form a liquid cooling circulation loop. The photoelectric speed sensor captures the engine speed (indirectly reflecting the load size) in real time, and the intelligent temperature control unit adjusts the pumping power and cooling liquid flow rate of the circulating liquid pump in a stepwise manner according to the preset speed threshold - low-power liquid cooling assistance at low load, high-power intensified cooling at high load, realizing "on-demand cooling" and avoiding energy waste and excessive cooling.

[0022] Dual cooling synergistic effect: air cooling is responsible for the basic cooling of the box interior space and the transmission components, and liquid cooling directly acts on the high-temperature box wall through the spiral liquid guide cooling fins, and the two form a complement, the cooling efficiency is significantly improved compared with single air cooling, and the engine temperature can be stably controlled in the best working interval.

[0023] II. Structure integration optimization, scientific and reasonable transmission and layout

[0024] Compact reduction gear design: two-stage transmission scheme combining planetary gear pair and steering transmission gear pair, which not only realizes the adaptation of high engine speed to the optimal working speed of the fan, but also completes 90-degree power steering through bevel gear structure, so that the cooling fan can be installed at the bottom of the lower case, and the overall structure is compact, efficient and reliable in power transmission without occupying too much space.

[0025] Multi-system integration: organically integrating the air cooling system (cooling fan, transmission parts), liquid cooling system (circulating liquid pump, liquid guide pipe), filtration system (intake filter), monitoring and control system (speed sensor, intelligent temperature control unit) with the engine case to form a complete thermal management ecosystem. The layout of each component is reasonable, avoiding the structural complexity problem caused by external pipelines or equipment, and improving the overall integrity and installation convenience of the engine.

[0026] Spiral flow guide fin multifunctional design: the spiral flow guide cooling fin not only increases the heat dissipation surface area of air cooling and prolongs the airflow path to enhance heat exchange, but also provides a heat transfer carrier for liquid cooling through the internal liquid guide channel, achieving "one fin dual use" and maximizing the heat dissipation efficiency in limited space.

[0027] Three, systematic air duct design, sufficient and clean heat exchange

[0028] Air duct path optimization: top air intake (multi-stage filtration), spiral flow guide, and bottom air exhaust air duct design, which conforms to the physical characteristics of hot air rising, cooperates with fan forced suction, reduces airflow short circuit and vortex, and ensures that cooling air flows through the main heat source area for more complete heat exchange.

[0029] Four-stage precision filtration for internal cleanliness: The intake filter uses a four-stage composite structure of "metal wire mesh (coarse filter) - non-woven fabric (medium filter) - activated carbon fiber felt (adsorption) - high molecular microporous filter membrane (fine filter)", which can comprehensively intercept large particle impurities, fine dust, oil mist and odors, effectively protect the transmission components such as gears and bearings, and the engine body from abrasive wear, and improve the running smoothness and service life. The filter core group adopts a clamping design for easy daily maintenance and replacement.

[0030] Four, intelligent temperature control for precise improvement of engine performance

[0031] Load adaptive adjustment: The intelligent temperature control unit based on the step control strategy of engine speed (load) makes the liquid cooling heat dissipation intensity precisely match the engine heat production demand, avoiding the "insufficient heat dissipation" or "excessive energy consumption" problem of traditional fixed power heat dissipation systems, especially suitable for complex conditions such as climbing, heavy load, and long-time driving.

[0032] Guarantee the best working condition: the combination of double heat dissipation and intelligent temperature control can effectively control the engine temperature, avoid the problems such as lubricating oil performance degradation, part thermal deformation, seal failure caused by overheating, and guarantee the stability of engine power output and fuel economy.

[0033] Enhance environmental adaptability and durability: the heat dissipation system enables the motorcycle engine to have stronger heat dissipation capacity in severe working conditions such as hot climate and continuous high load, thereby widening the safe working range; at the same time, the clean working environment and stable temperature control greatly reduce the engine failure rate and improve the environmental adaptability and long-term durability of the vehicle.

[0034] In summary, the heat dissipation scheme of the motorcycle engine described in the application is a highly integrated, self-driven and intelligent heat management solution. It creatively integrates multiple functional modules such as "air-cooled self-driven heat dissipation, liquid-cooled intelligent regulation, precise air filtration and efficient transmission reversing" to achieve the comprehensive effect of "guaranteed basic heat dissipation, adjustable dynamic heat dissipation and clean internal environment" without relying on external additional energy. Its core value lies in the synergistic effect of air cooling and liquid cooling and intelligent temperature control strategy, which significantly improves the heat dissipation efficiency and adaptability, and protects the internal mechanism through multiple filtration, not only directly improving the power performance and fuel economy of the engine, but also fundamentally enhancing the working reliability, environmental adaptability and service life of the engine. It has important practical value and technical significance for improving the comprehensive competitiveness of motorcycle products. BRIEF DESCRIPTION OF DRAWINGS

[0035] In the drawings:

[0036] Figure 1 is a half cutaway structural schematic diagram of the application;

[0037] Figure 2 is a structural schematic diagram of the speed reduction transmission of the application;

[0038] Figure 3 is a structural schematic diagram of the planetary gear pair of the application;

[0039] Figure 4 is a structural schematic diagram of the steering transmission gear pair of the application;

[0040] Figure 5 is a half cutaway structural schematic diagram of the air intake filter of the application;

[0041] Figure 6 is a structural schematic diagram of the filter core group of the application;

[0042] Figure 7 is a connection structure schematic diagram of the liquid cooling liquid supply assembly and the internal liquid guide channel of the spiral guide flow heat dissipation fin of the application;

[0043] Figure 8 Fig. 1 is a structural schematic diagram of the temperature control system of the present application;

[0044] Reference signs:

[0045] 1, upper machine box; 2, lower machine box; 3, power output shaft; 4, speed reduction transmission; 5, cooling fan; 6, air inlet filter; 7, spiral guide cooling fin; 8, liquid cooling liquid supply assembly; 9, photoelectric speed sensor;

[0046] 11, air inlet;

[0047] 21, air outlet;

[0048] 41, planetary gear pair; 42, steering transmission gear pair;

[0049] 411, gear one; 412, gear two; 413, gear ring one;

[0050] 421, gear ring two; 422, gear three; 423, butt joint shaft; 424, bevel gear one; 425, bevel gear two; 426, rotating shaft;

[0051] 61, clamping frame; 62, filter core group;

[0052] 621, first-stage filter core; 622, second-stage filter core; 623, third-stage filter core; 624, fourth-stage filter core;

[0053] 71, liquid guide channel;

[0054] 81, circulating liquid pump; 82, liquid guide pipe; 83, intelligent temperature control unit; 831, control module; 832, data storage module. DETAILED DESCRIPTION

[0055] The application will be described in further detail below with reference to the drawings and embodiments. It is apparent that the described embodiments are only a part of the embodiments of the application, and not all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0056] It should be noted that if the application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0057] Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

[0058] like Figures 1 to 8 As shown, this embodiment of the invention provides a motorcycle engine with rapid heat dissipation. Its core lies in the dual heat dissipation mode of "air-cooled self-drive + liquid-cooled intelligent adjustment", combined with efficient air duct and precision filtration, to achieve rapid, stable and clean heat dissipation of the engine.

[0059] Specifically, the engine includes an upper housing 1 and a lower housing 2. The upper housing 1 is mounted on top of the lower housing 2, and the two are internally connected, together forming the engine's housing structure. A power output shaft 3 is provided at the center of one side wall of the lower housing 2. This shaft is used to connect with the output end of the engine body (such as a crankshaft) to output power.

[0060] To achieve air-cooling, a reduction gear 4 is installed inside the lower casing 2, which is connected to the power output shaft 3. Simultaneously, an air outlet 21 is provided at the bottom of the lower casing 2, and a cooling fan 5 is installed inside this outlet 21. This cooling fan 5 is connected to the power output shaft 3 via the aforementioned reduction gear 4. When the engine is running, the rotational power of the power output shaft 3 is transmitted to the cooling fan 5 through the reduction gear 4, driving the cooling fan 5 to rotate and forcibly drawing air outward from the bottom of the lower casing 2, expelling hot air from the casing and forming an airflow path from the inside out.

[0061] As a preferred transmission scheme, the reduction gear 4 includes a planetary gear pair 41 and a steering gear pair 42. The central input portion of the planetary gear pair 41 is directly connected to the power output shaft 3, achieving single-stage reduction and torque increase. The input end of the steering gear pair 42 is connected to the output end of the planetary gear pair 41, and its output end is ultimately connected to the shaft of the radiator fan 5. This two-stage transmission design can both reduce the high speed of the engine to a speed suitable for the fan's operation and change the direction of power transmission to accommodate the installation layout of the radiator fan 5.

[0062] Further, the specific structure of the planetary gear pair 41 includes: gear one 411, gear two 412 and gear ring one 413. The gear one 411 is fixedly sleeved on the power output shaft 3 as a sun gear. The three gear twos 412 are evenly surrounded and engaged with the gear one 411 as planet gears. The gear ring one 413 is engaged with the outside of the three gear twos 412 as a planet carrier or a fixed ring gear (according to the specific design, the gear ring one 413 is preferably a rotatable output member here). In the embodiment, the rotating motion of the gear ring one 413 is taken as a power output and transmitted to the next stage of the steering transmission gear pair 42.

[0063] For the steering transmission gear pair 42, one specific implementation includes: gear ring two 421, gear three 422, butt joint shaft 423, bevel gear one 424, bevel gear two 425 and rotating shaft 426. The gear ring two 421 is connected with the output end (i.e. the gear ring one 413) of the planetary gear pair 41 to obtain power. The gear three 422 is engaged with the inner ring of the gear ring two 421. The front end of the butt joint shaft 423 is butted with the gear three 422 and the rear end is butted with the bevel gear one 424. The bevel gear one 424 is perpendicularly engaged with the bevel gear two 425 to change the power transmission direction by 90 degrees. The top end of the rotating shaft 426 is butted with the center of the bevel gear two 425 and the bottom end extends downward and is butted with the shaft center of the cooling fan 5. Finally, the power is driven by the gear pair to rotate the cooling fan 5 in its mounting plane.

[0064] In order to form a complete and efficient cooling air duct, an air inlet 11 is formed at the top end of the upper machine box 1. External cooling air can enter the engine box body through the air inlet 11. An air inlet filter 6 is clamped in the air inlet 11 to filter the air entering the engine and prevent dust, impurities and the like from entering to protect the internal transmission components and the engine body. In addition, a spiral flow guide cooling fin 7 is arranged on the inner side wall of the upper machine box 1. The fin is internally provided with a through liquid guide channel 71, which is used to enhance the air cooling heat exchange and also as a heat transfer carrier for liquid cooling circulation.

[0065] One specific structure of the air inlet filter 6 includes a clamping frame 61 and a filter core group 62. The clamping frame 61 is detachably inserted into the air inlet 11 for easy maintenance and replacement. The filter core group 62 is installed in the inside of the clamping frame 61 and adopts a multi-layer composite filter design. From top to bottom, the filter core group 62 is sequentially arranged with: a first filter core 621, a second filter core 622, a third filter core 623 and a fourth filter core 624.

[0066] The functions and specifications of the filter cores of each layer are as follows:

[0067] The first filter core 621 adopts a metal wire woven mesh layer with a mesh aperture designed between 0.8-1.2 mm, mainly used for intercepting leaves, flying insects and larger particulate matters.

[0068] Secondary filter core 622: non-woven fabric filter layer, which can effectively filter medium-sized dust and particles.

[0069] Tertiary filter core 623: activated carbon fiber felt layer, which not only can adsorb finer dust, but also can adsorb part of oil mist and odor in the air.

[0070] Quaternary filter core 624: high molecular microporous filter membrane layer, with an average pore size of 5-10 microns, as a precision filter layer, which can ensure the cleanliness of air entering the engine interior and effectively protect precision components.

[0071] To realize liquid cooling and intelligent adjustment, a liquid cooling supply assembly 8 is installed on the side of the upper machine box 1, which includes a circulating liquid pump 81 and a liquid guide pipe 82. The circulating liquid pump 81 is fixedly installed on the outer side wall of the upper machine box 1, and the liquid guide pipe 82 is provided with two, which are respectively connected to the liquid inlet end and the liquid outlet end of the circulating liquid pump 81, and the other end of the two liquid guide pipes 82 are connected with the liquid guide channel 71 inside the spiral guide heat dissipation fin 7, forming a closed liquid cooling circulation loop. The cooling liquid flows in the liquid guide channel 71 under the drive of the circulating liquid pump 81, absorbs the heat of the engine box through the spiral guide heat dissipation fin 7, and realizes liquid cooling.

[0072] An optical speed sensor 9 is also installed in the lower machine box 2, the detection end of which faces the engine body output end (or power output shaft 3), which is used to monitor the engine speed signal in real time, and transmit the monitoring data to the intelligent temperature control unit 83 of the temperature control system in real time.

[0073] The temperature control system includes an intelligent temperature control unit 83, which can be integrated and installed on the circulating liquid pump 81 housing or the outer side of the upper machine box 1, and has a control module 831 and a data storage module 832 built-in. The intelligent temperature control unit 83 and the optical speed sensor 9 and the circulating liquid pump 81 are electrically connected through wires. The data storage module 832 pre-stores the speed-temperature control strategy and the corresponding first preset threshold (such as 3000r / min) and second preset threshold (such as 6000r / min); the control module 831 receives the real-time speed signal transmitted by the optical speed sensor 9, and compares it with the preset threshold:

[0074] When the engine speed is lower than the first preset threshold, it is determined that the engine is in a low load working condition, the control module 831 controls the circulating liquid pump 81 to stop running or maintain the lowest power standby, and only relies on the air cooling system to realize heat dissipation;

[0075] When the engine speed is monitored to exceed the first preset threshold and be lower than the second preset threshold, it is determined that the engine is in a medium load working condition, and the control module 831 controls the circulating liquid pump 81 to run at a first gear power, and the cooling liquid circulates at a medium flow rate, and the auxiliary air cooling enhances the heat dissipation effect;

[0076] When the engine speed is monitored to exceed the second preset threshold, it is determined that the engine is in a high load working condition, and the control module 831 controls the circulating liquid pump 81 to switch to a second gear power operation, and the cooling liquid circulates at a maximum flow rate, and the liquid cooling heat dissipation is strengthened to ensure that the engine temperature rapidly decreases.

[0077] The working process of the application is as follows:

[0078] Air cooling circulation: After the engine is started, power is transmitted to the speed reducer 4 through the power output shaft 3, the power is increased in torque through the planetary gear pair 41, and the direction is changed through the transmission gear pair 42, and finally the heat dissipation fan 5 is driven to rotate at high speed. The forced suction force generated by the heat dissipation fan 5 causes external cold air to enter from the air inlet 11 at the top of the upper machine box 1, and after being purified by the four-stage air filter 6, it enters the inside of the box. Under the guidance of the spiral guide heat dissipation fin 7, the cold air flows downward along the spiral path, prolongs the contact time with the high-temperature box wall and fin, and after fully absorbing heat, it is discharged from the air outlet 21 at the bottom of the lower machine box 2 by the heat dissipation fan 5, completing the air cooling circulation.

[0079] Liquid cooling circulation and intelligent adjustment: The optical speed sensor 9 monitors the engine speed in real time and transmits it to the intelligent temperature control unit 83. The control module 831 dynamically adjusts the working state of the circulating liquid pump 81 according to the comparison result of the speed signal and the preset threshold: in a medium load, the first gear liquid cooling circulation assists in heat dissipation; in a high load, the second gear liquid cooling circulation strengthens heat dissipation. The cooling liquid flows in the liquid guide channel 71, and absorbs the heat of the box through the spiral guide heat dissipation fin 7, realizing collaborative heat dissipation with air cooling.

[0080] Dual heat dissipation collaboration: The air cooling system is responsible for the basic heat dissipation of the box interior space and the transmission components, and the liquid cooling system dynamically supplements the heat dissipation intensity according to the load demand, and the two form a high-efficiency, self-adaptive heat dissipation system, ensuring that the engine can maintain the best working temperature under different working conditions.

[0081] The above only describes the preferred embodiments of the application and is not intended to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

[0082] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0083] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A motorcycle engine with rapid heat dissipation, comprising an upper casing (1) and a lower casing (2), characterized in that, The upper casing (1) is installed on top of the lower casing (2) and is internally connected. A power output shaft (3) is provided at the center of one side wall of the lower casing (2) and is connected to the output end of the engine body. A reduction transmission component (3) is also installed in the lower casing (2) and is connected to the power output shaft (3). An air outlet (21) is opened at the bottom of the lower casing (1). A cooling fan (5) is installed in the air outlet (21). The cooling fan (5) is connected to the reduction transmission component (3). A liquid cooling supply assembly (8) is also installed on the outer side of the upper casing (1). The liquid cooling supply assembly (8) is connected to the liquid channel (71) inside the spiral flow cooling fins (7) provided on the wall of the upper casing (1). A photoelectric speed sensor (9) is also installed in the lower casing (2).

2. A motorcycle engine with rapid heat dissipation according to claim 1, characterized in that, The speed reduction transmission component (4) includes a planetary gear pair (41) and a steering transmission gear pair (42). The center of the planetary gear pair (41) is connected to the power output shaft (3). The input end of the steering transmission gear pair (42) is connected to the planetary gear pair (41), and the output end is connected to the cooling fan (5).

3. A motorcycle engine with rapid heat dissipation according to claim 2, characterized in that, The planetary gear pair (41) includes gear one (411), gear two (412) and gear ring one (413). Gear one (411) is fixedly sleeved on the power output shaft (3). Gear two (412) has three rings that mesh around gear one (411). Gear ring one (413) meshes with the three outer sides of gear two (412). Gear ring one (413) serves as the power output end structure of the steering transmission gear pair (42).

4. A motorcycle engine with rapid heat dissipation according to claim 1, characterized in that, The steering transmission gear pair (42) includes a second gear ring (421), a third gear (422), a docking shaft (423), a first bevel gear (424), a second bevel gear (425), and a rotating shaft (426). The second gear ring (421) is connected to the output end of the planetary gear pair (41). The third gear (422) meshes with the inner ring of the second gear ring (421). The front end of the docking shaft (423) is connected to the third gear (422), and the rear end is connected to the first bevel gear (424). The second bevel gear (425) meshes perpendicularly with the first bevel gear (424). The top end of the rotating shaft (426) is connected to the center of the second bevel gear (425), and the bottom end is connected to the shaft of the cooling fan (5).

5. A motorcycle engine with rapid heat dissipation according to claim 1, characterized in that, An air inlet (11) is provided at the top of the upper casing (1), and an air filter (6) is snapped into the inside of the air inlet (11).

6. A motorcycle engine with rapid heat dissipation according to claim 5, characterized in that, The intake filter (6) includes a snap-fit ​​frame (61) and a filter element assembly (62). The snap-fit ​​frame (61) is inserted into the intake port (11). The filter element assembly (62) is installed inside the snap-fit ​​frame (61) and is composed of a primary filter element (621), a secondary filter element (622), a tertiary filter element (623), and a quaternary filter element (624). The primary filter element (621), secondary filter element (622), tertiary filter element (623), and quaternary filter element (624) are arranged in a top-to-bottom order.

7. A motorcycle engine with rapid heat dissipation according to claim 5, characterized in that, The first-stage filter element (621) is a metal wire woven mesh layer with a mesh size of 0.8-1.2 mm; the second-stage filter element (622) is a non-woven fabric filter layer; the third-stage filter element (623) is an activated carbon fiber felt layer; and the fourth-stage filter element (624) is a polymer microporous filter membrane layer with an average pore size of 5-10 micrometers.

8. A motorcycle engine with rapid heat dissipation according to claim 1, characterized in that, The liquid cooling supply assembly (8) includes a circulating liquid pump (81) and a liquid guide pipe (82). The circulating liquid pump (81) is mounted outside the upper chassis (1). The liquid guide pipe (82) has two parts that are respectively connected to the inlet end and the outlet end of the circulating liquid pump (81) and are respectively connected to the liquid guide channel (71) inside the spiral heat dissipation fin (7).

9. A motorcycle engine with rapid heat dissipation according to any one of claims 1-8, characterized in that, It also includes a temperature control system, which includes an intelligent temperature control unit (83). The intelligent temperature control unit (83) is electrically connected to a photoelectric speed sensor (9) and a circulating fluid pump (81). It is used to receive the engine speed signal monitored in real time by the photoelectric speed sensor (9) and dynamically adjust the pumping power and coolant flow rate of the circulating fluid pump (81) according to a preset speed-temperature control strategy.

10. A motorcycle engine with rapid heat dissipation according to claim 9, characterized in that, The intelligent temperature control unit (83) has a built-in control module (831) and a data storage module (832). The control module (831) is configured to: when the photoelectric speed sensor (9) detects that the engine speed exceeds the first preset threshold, control the circulating liquid pump (81) to run at the first power level; when the engine speed is detected to exceed the second preset threshold, control the circulating liquid pump (81) to switch to the second power level with a higher flow rate, thereby realizing stepped active liquid cooling based on the engine load state.

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