Motorcycle engine cylinder head heat dissipation structure

Abstract

The utility model relates to a motorcycle engine cylinder head heat radiation structure, including cylinder head body. Through the shape design of cylinder head and the optimization layout of cooling fin, formed two effective through air ducts around the high temperature exhaust pipe on the cylinder head. It has increased two through air ducts, can effectively take away the heat of high temperature exhaust port, and reduced the heat exchange area of high temperature exhaust and cylinder head, effectively improved the air cooling heat radiation effect of cylinder head.

Description

Technical Field

[0001] This utility model belongs to the field of engine component technology, specifically relating to a cooling structure for a motorcycle engine cylinder head. Background Technology

[0002] The cooling duct area of ​​a motorcycle engine cylinder head experiences extremely high heat loads, making it prone to overheating and deformation, a major cause of damage to the cylinder head and related components. Therefore, ensuring sufficient cooling space and intensity in this area is a key aspect of cylinder head structural design. To address this issue, a new motorcycle engine cylinder head cooling duct structure has emerged on the market.

[0003] The specific structure of the aforementioned motorcycle engine cylinder head is as follows: The cylinder head contains a cooling air duct, which consists of a main air duct and branch air ducts connected to it. The air inlet of the main air duct is located on the outside of the cylinder head and communicates with the outside air. The main air duct runs along the inner wall of the cylinder head and blows air towards the inner wall. In this structure, the airflow through the cooling air duct is small, the heat dissipation area is small, and the heat dissipation effect is poor. Internal parts cannot be adequately cooled, which exacerbates wear between internal components, thereby reducing engine performance and overall service life. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a motorcycle engine cylinder head heat dissipation structure with a large heat dissipation area and good heat dissipation effect.

[0005] The purpose of this utility model can be achieved through the following technical solution: a cooling air duct structure for a motorcycle engine cylinder head, including a cylinder head body, characterized in that: a first cooling fin is provided on one side of the cylinder head exhaust port, and an air inlet is provided at the top of the exhaust port; a second cooling fin is provided at the spark plug mounting position of the cylinder head, and an air outlet is provided on the side of the spark plug mounting position; and a ventilation hole is provided at the bottom of the cylinder head.

[0006] The motorcycle engine cylinder head cooling duct structure is characterized in that: the number of first cooling fins is multiple, and their shape is arc-shaped.

[0007] The motorcycle engine cylinder head cooling duct structure is characterized in that: the second cooling fin extends from the spark plug installation position to the cylinder head cover mating surface.

[0008] The cooling air duct structure of the motorcycle engine cylinder head is characterized by: ventilation holes arranged longitudinally, in multiple quantities.

[0009] The motorcycle engine cylinder head cooling duct structure is characterized by the following: through the shape design of the cylinder head and the optimized layout of the heat sink, two effective ventilation ducts are formed around the high-temperature exhaust pipe on the cylinder head. The first duct enters from the air inlet at the top of the cylinder head exhaust port, passes through the duct between the exhaust port and the cylinder head bolt hole, and is blown out from the air outlet at the spark plug installation position. The second duct enters from the heat sink on the left side of the cylinder head exhaust port, passes through the ventilation hole at the bottom of the cylinder head, and is blown out from the side of the cylinder head.

[0010] This utility model relates to a motorcycle engine cylinder head cooling duct structure. Through the design of the cylinder head shape and the optimized layout of the heat sink, two effective through-flow ducts are formed around the high-temperature exhaust pipe on the cylinder head. The addition of two through-flow ducts increases the heat dissipation area and effectively removes heat from the high-temperature exhaust port. Furthermore, it reduces the heat exchange area between the high-temperature exhaust and the cylinder head, effectively improving the air-cooling performance of the cylinder head. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the cooling air duct structure of the cylinder head of the motorcycle engine in this invention.

[0013] Figure 2 for Figure 1 The left view;

[0014] Figure 3 for Figure 1 A bottom view;

[0015] Figure 4 This is a cross-sectional view of the cooling air duct structure of the cylinder head of the motorcycle engine of this invention; Detailed Implementation

[0016] Referring to the attached drawings, a cooling air duct structure for a motorcycle engine cylinder head includes a cylinder head body (1), a first cooling fin (3) on one side of the cylinder head exhaust port (2), an air inlet (4) on the top of the exhaust port (2); a second cooling fin (6) on the cylinder head spark plug mounting position (5), an air outlet (7) on the side of the spark plug mounting position (5); and a ventilation hole (8) at the bottom of the cylinder head.

[0017] The number of first heat sinks (3) is multiple, and their shape is arc.

[0018] The second heat sink (6) extends from the spark plug mounting position (5) to the cylinder head cover mating surface.

[0019] The ventilation holes (8) are arranged longitudinally, and there are multiple of them.

[0020] Through the shape design of the cylinder head (1) and the optimized layout of the heat sink, two effective ventilation channels are formed around the high-temperature exhaust pipe on the cylinder head (1). The first channel enters from the air inlet (4) at the top of the cylinder head exhaust port (2), passes through the channel between the exhaust port and the cylinder head bolt hole, and is blown out from the air outlet (7) at the spark plug installation position. The second channel enters from the heat sink on the left side of the cylinder head (1) exhaust port, passes through the ventilation hole (8) at the bottom of the cylinder head, and is blown out from the side of the cylinder head.

[0021] The cooling duct structure of this motorcycle engine cylinder head, through the shape design of the cylinder head (1) and the optimized layout of the heat sink, forms two effective through-flow ducts around the high-temperature exhaust pipe on the cylinder head (1). By adding two through-flow ducts, the heat dissipation area is increased, and the heat at the high-temperature exhaust port can be effectively removed. Moreover, the heat exchange area between the high-temperature exhaust and the cylinder head is reduced, which effectively improves the air-cooling effect of the cylinder head.

[0022] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the structure of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A cooling structure for a motorcycle engine cylinder head, comprising a cylinder head body, characterized in that: A first heat sink is provided on one side of the cylinder head exhaust port, and an air inlet is provided on the top of the exhaust port; a second heat sink is provided at the spark plug mounting position on the cylinder head, and an air outlet is provided on the side of the spark plug mounting position; a ventilation hole is provided at the bottom of the cylinder head.

2. The motorcycle engine cylinder head cooling structure according to claim 1, characterized in that: The first heat sink consists of multiple fins, each in an arc shape.

3. The motorcycle engine cylinder head cooling structure according to claim 1, characterized in that: The second heat sink extends from the spark plug mounting position to the cylinder head cover mating surface.

4. The motorcycle engine cylinder head cooling structure according to claim 1, characterized in that: The ventilation openings are arranged longitudinally, and there are multiple of them.

Images