Single-cylinder air cooling cylinder body
By setting ventilation holes on the exhaust and intake sides of the motorcycle air-cooled cylinder block and distributing transverse fins on the longitudinal reinforcement ribs, the problem of longitudinal reinforcement ribs blocking cold air is solved, the heat dissipation ability is improved and vibration is reduced Noise extends the engine life.
Patent Information
- Application Number
- CN202421192246.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The longitudinal reinforcement between the transverse fins of existing motorcycle air-cooled engines blocks the cold air, resulting in a high thermal load on the cylinder and poor heat dissipation effect.
A single-cylinder air-cooled cylinder block is designed, and ventilation holes are provided on the exhaust and intake sides of the cylinder block, and transverse heat sinks and ventilation holes are distributed on the longitudinal reinforcement ribs. The ventilation holes are arranged opposite to the chain cavity, and the longitudinal direction is The reinforcement ribs are arranged between the transverse heat sinks to form an overall structure and optimize the spatial layout to improve the heat dissipation effect.
By adding ventilation holes and optimizing the layout of the heat sink, the engine's heat dissipation ability is improved, the engine's thermal load is reduced, the vibration noise is improved, and the engine's life is extended.
Smart Images
Figure CN222228694U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motorcycle engines, in particular to a single-cylinder air-cooled cylinder body. Background Art
[0002] There are two types of engine cooling systems: water-cooled engines and air-cooled engines. Most motorcycles use air-cooled engines, which rely on fans to generate wind sources and guide the wind direction through wind shields to take away the heat generated by the combustion of the engine cylinders. The structural feature of this engine is that the cylinder liner is processed into a heat sink to increase the heat dissipation area and improve the heat dissipation effect.
[0003] Chinese patent document CN212642888U discloses a motorcycle air-cooled engine cylinder block, comprising a cylinder body, a piston cavity is arranged inside the cylinder body, a sprocket chamber is arranged outside the cylinder body, and a piston cavity wall is between the piston cavity and the sprocket chamber; the characteristic is that: an air groove is opened on the piston cavity wall, and the air groove is a through-type, which passes from one side of the cylinder body to the other side to form a cooling air channel.
[0004] Chinese patent document CN218542421U discloses an air-cooled general-purpose gasoline engine cylinder block, including a cylinder body, the outer wall of which is fixed with a plurality of groups of annular heat sinks, both sides of which are provided with inclined air guide ducts, the bottom surface of the heat sink is the windward surface, and the top surface is the leeward surface, the leeward surface of the heat sink is provided with a plurality of groups of air guide platforms, the air guide platforms are also inclined, and the top surface is in the same plane as the bottom surface of the air guide duct, both sides of the rear end of the heat sink are fixed with air guide arc plates; a rear reinforcement strip is vertically provided in the middle of the rear end of the cylinder body, and a plurality of front reinforcement strips are fixed to the front end of the cylinder body.
[0005] The prior art has the following deficiencies: in the prior art, longitudinal reinforcing ribs are arranged between the transverse heat sinks, but the cold air on the exhaust side is blocked by the longitudinal reinforcing ribs and cannot effectively take away the heat of the cylinder body, resulting in a high thermal load on the cylinder body. Utility Model Content
[0006] The utility model provides a single-cylinder air-cooled cylinder block with good heat dissipation capability, comprising a cylinder body, a cylinder hole and a chain cavity, wherein the cylinder hole is located in the middle of the cylinder body, the chain cavity is located on the side of the cylinder body, and the outer wall of the cylinder body is provided with multiple layers of transverse heat dissipation fins and multiple longitudinal reinforcing ribs, and is characterized in that ventilation holes are provided on both the exhaust side and the intake side of the cylinder body, and the ventilation holes are located on the longitudinal reinforcing ribs.
[0007] Preferably, the ventilation holes are respectively located at a corner on the exhaust side away from the chain cavity and a corner on the intake side away from the chain cavity.
[0008] Preferably, two of the longitudinal reinforcing ribs are arranged on a corner away from the chain cavity on the exhaust side, and the ventilation holes are arranged on both of the longitudinal reinforcing ribs; one of the longitudinal reinforcing ribs is arranged on a corner away from the chain cavity on the intake side, and the ventilation holes are arranged on the longitudinal reinforcing ribs.
[0009] Preferably, the longitudinal reinforcing ribs are arranged between each layer of transverse heat sinks, and the longitudinal reinforcing ribs in the same vertical direction form a whole.
[0010] In order to facilitate ventilation and heat dissipation, the ventilation holes on the exhaust side and the intake side are horizontally connected between each layer.
[0011] In order to miniaturize the overall structure, the size of the transverse heat sink gradually decreases from top to bottom. The upper part of the cylinder body is close to the combustion chamber and has a large heat dissipation demand, so the size is large, which optimizes the space layout without affecting the heat dissipation effect.
[0012] In order to improve the vibration noise of the cylinder body, each layer of the transverse heat sink is provided with a notch, with the cylinder hole as the center, and the notch is located on the opposite side of the chain cavity.
[0013] Preferably, the notch is an arc-shaped notch.
[0014] The utility model has the following beneficial effects:
[0015] 1. The utility model has ventilation holes arranged on both the exhaust side and the intake side of the cylinder body. The cooling wind from the exhaust side can reach the intake side through the ventilation holes and take away the heat on the cylinder body. The utility model can improve the heat dissipation capacity of the air-cooled cylinder body of the motorcycle engine, reduce the heat load of the engine, and increase the life of the engine.
[0016] 2. The distance between the longitudinal reinforcement ribs at the two corners of the exhaust side and the intake side is relatively far, resulting in a low modal frequency of the transverse heat sink between the two longitudinal reinforcement ribs. Therefore, a circular arc notch is dug on the transverse heat sink at this point to increase the modal frequency by reducing the suspended length of the transverse heat sink, thereby improving the vibration noise of the cylinder block. The utility model has the advantages of ingenious structural design, convenient and reliable use, and low cost. At the same time, it ensures that the modal frequency of the cylinder block is high enough, reduces vibration noise, and improves the sound quality of the engine. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of an embodiment of a single-cylinder air-cooled cylinder block of the utility model;
[0018] Figure 2 for Figure 1 A top view of
[0019] Figure 3 for Figure 1 Left view of;
[0020] Figure 4 for Figure 1 Rear view of. DETAILED DESCRIPTION
[0021] The following is further described in detail through specific implementation methods:
[0022] 1. The reference numerals in the drawings of the specification include: cylinder body 1, cylinder hole 2, chain cavity 3, cylinder liner 4, transverse heat sink 5, longitudinal reinforcing rib 6, arc-shaped notch 7, exhaust side 8, intake side 9, ventilation hole 10, ventilation hole 1 101, ventilation hole 2 102, ventilation hole 3 103.
[0023] Example 1
[0024] like Figure 1-4 As shown, a single-cylinder air-cooled cylinder block includes a cylinder body 1, a cylinder hole 2 and a chain cavity 3, wherein the cylinder hole 2 is located in the middle of the cylinder body 1 and is installed with a cylinder sleeve 4, and the chain cavity 3 is located on the side of the cylinder body 1, and the outer wall of the cylinder body 1 is provided with 6 layers of transverse heat sinks 5 and a plurality of longitudinal reinforcing ribs 6, and a circular arc-shaped notch 7 is provided at a corresponding position of each layer of the transverse heat sink 5, and the circular arc-shaped notch 7 is located on the opposite side of the chain cavity 3 with the cylinder hole 2 as the center, and the other two sides of the cylinder body 1 are the exhaust side 8 and the intake side 9, and the exhaust side 8 and the intake side 9 of the cylinder body 1 are both provided with ventilation holes 10, and the ventilation holes 10 are located on the longitudinal reinforcing ribs 6.
[0025] The longitudinal reinforcing ribs 6 are distributed on the exhaust side 8 and the intake side 9 of the cylinder body 1. Two longitudinal reinforcing ribs 6 are arranged on a corner of the exhaust side 8 of the cylinder body 1 away from the chain cavity 3, that is, the lower left corner in the top view, and the longitudinal reinforcing ribs 6 are evenly distributed on the rest of the exhaust side 8. Only two longitudinal reinforcing ribs 6 at a corner of the exhaust side 8 are each provided with a row of ventilation holes 10, which are a row of ventilation holes one 101 and a row of ventilation holes two 102 respectively; a longitudinal reinforcing rib 6 with ventilation holes three 103 is arranged on a corner of the intake side 9 of the cylinder body 1 away from the chain cavity 3, that is, the upper left corner in the top view, and the longitudinal reinforcing ribs 6 are evenly distributed on the rest of the intake side 9.
[0026] The longitudinal reinforcing ribs 6 are arranged between each layer of transverse heat sink fins 5 , and the longitudinal reinforcing ribs 6 in the same vertical direction form a whole.
[0027] The ventilation hole 1 101 and the ventilation hole 2 102 on the exhaust side 8 are laterally connected with the ventilation hole 3 103 on the intake side 9 between each layer, that is, the ventilation hole 1 101 and the ventilation hole 2 102 on the same layer are laterally connected with the ventilation hole 3 103 on the same layer.
[0028] The size of the transverse heat sink 5 gradually decreases from top to bottom, and the sizes of the ventilation hole 101, ventilation hole 2 102 and ventilation hole 3 103 gradually decrease from top to bottom. The upper part of the cylinder body is close to the combustion chamber and has a large heat dissipation demand, so the size is large, which optimizes the space layout without affecting the heat dissipation effect.
[0029] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.
Claims
1. A single-cylinder air-cooled cylinder block, comprising a cylinder body (1), a cylinder hole (2) and a chain cavity (3), wherein the cylinder hole (2) is located in the middle of the cylinder body (1), the chain cavity (3) is located on the side of the cylinder body (1), and the outer wall of the cylinder body (1) is provided with multiple layers of transverse cooling fins (5) and multiple longitudinal reinforcing ribs (6), characterized in that: The exhaust side (8) and the intake side (9) of the cylinder body (1) are both provided with ventilation holes (10), and the ventilation holes (10) are located on the longitudinal reinforcing ribs (6).
2. The single-cylinder air-cooled cylinder block according to claim 1, characterized in that: The ventilation holes (10) are respectively located at a corner on the exhaust side (8) away from the chain chamber (3) and at a corner on the intake side (9) away from the chain chamber (3).
3. The single-cylinder air-cooled cylinder block according to claim 2, characterized in that: Two longitudinal reinforcing ribs (6) are arranged at a corner of the exhaust side (8) away from the chain cavity (3), and the ventilation holes (10) are arranged on both of the longitudinal reinforcing ribs (6); one longitudinal reinforcing rib (6) is arranged at a corner of the intake side (9) away from the chain cavity (3), and the ventilation holes (10) are arranged on the longitudinal reinforcing rib (6).
4. The single-cylinder air-cooled cylinder block according to claim 3, characterized in that: The longitudinal reinforcing ribs (6) are arranged between each layer of transverse heat sink fins (5), and the longitudinal reinforcing ribs (6) in the same vertical direction form a whole.
5. The single-cylinder air-cooled cylinder block according to claim 4, characterized in that: The ventilation holes (10) on the exhaust side (8) and the intake side (9) are in transverse communication between the layers.
6. The single-cylinder air-cooled cylinder block according to any one of claims 1 to 5, characterized in that: The size of the transverse heat sink (5) gradually decreases from top to bottom.
7. The single-cylinder air-cooled cylinder block according to claim 6, characterized in that: A notch is provided on each layer of the transverse heat sink (5), with the cylinder hole (2) as the center, and the notch is located on the opposite side of the chain cavity (3).
8. The single-cylinder air-cooled cylinder block according to claim 7, characterized in that: The notch is an arc-shaped notch (7).