Water channel structure of motorcycle engine cylinder head

Abstract

The application discloses a water channel structure of a motorcycle engine cylinder head, which comprises a cylinder head body, the cylinder head body is provided with a water inlet and a water outlet, the cylinder head body is internally provided with a main cooling water channel and an exhaust channel nose bridge cooling water channel, the main cooling water channel is communicated with the water inlet and the water outlet, the exhaust channel nose bridge cooling water channel is arranged in a nose bridge area between two exhaust channels and is communicated with the main cooling water channel, and an embedded part is additionally arranged in the exhaust channel nose bridge cooling water channel, and the embedded part is used for separating the exhaust channel nose bridge cooling water channel into two cooling water channels. The temperature of the exhaust channel nose bridge, the temperature of the cylinder head body and the temperature of the whole engine are effectively reduced, and the cooling effect of the engine is enhanced.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and more particularly to a water channel structure for a motorcycle engine cylinder head. Background Technology

[0002] The cylinder head of a motorcycle engine is the main heat-generating component, with surface temperatures exceeding 200°C. Excessive heat load on the cylinder head leads to high overall engine temperatures, severely impacting engine power performance and the reliability of internal components, thus reducing engine lifespan and causing increased noise during operation. Therefore, it is crucial to control the engine temperature within acceptable limits during operation.

[0003] Existing water-cooled cylinder heads have their water chambers located within the cylinder head block above the combustion chamber, providing water cooling only around the combustion chamber. This results in a small contact area between the cylinder head block and the cooling water, preventing the rapid removal of heat from the intake and exhaust manifolds, leading to ineffective cooling. When the engine is a high-power engine, the heat generated is even greater, and traditional water-cooled cylinder heads alone cannot meet the engine's operating requirements.

[0004] The drawback of existing technology is that the water channel structure is simple and cannot effectively cool the local overheated areas in the combustion zone of the engine block, resulting in low cooling efficiency. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a water channel structure for the cylinder head of a motorcycle engine to improve the cooling effect.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A water channel structure for a motorcycle engine cylinder head includes a cylinder head body, which has an inlet and an outlet. The cylinder head body has a main cooling channel and an exhaust nose bridge cooling channel. The main cooling channel is connected to the inlet and the outlet. The exhaust nose bridge cooling channel is located in the nose bridge area between two exhaust channels and is connected to the main cooling channel. An insert is added inside the exhaust nose bridge cooling channel to divide the exhaust nose bridge cooling channel into two cooling channels.

[0008] Furthermore, the cylinder head body has an insertion hole that communicates with the exhaust nose bridge cooling water channel, and the insert is at least partially inserted into the insertion hole to divide the exhaust nose bridge cooling water channel into two cooling water paths.

[0009] Furthermore, the insert includes an insertion portion located within the exhaust port nose bridge cooling water channel and an operating portion protruding from the surface of the cylinder head body.

[0010] Furthermore, the insertion part is cylindrical.

[0011] Furthermore, the embedding hole has an internal thread, and the insertion part has an external thread that matches the internal thread.

[0012] Furthermore, the insert is a bolt.

[0013] Furthermore, the insert is located in the middle of the exhaust duct nose bridge cooling water channel.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] This invention utilizes an insert within the exhaust manifold nose cooling channel to divide it into two cooling water paths. As cooling water flows in from the inlet, through the main cooling channel, and out from the outlet, the insert narrows the exhaust manifold nose cooling channel, increasing the water velocity and impact force. Consequently, within the same timeframe, the cooling water absorbs more heat from both sides of the exhaust manifold, thereby enhancing the cooling capacity of the exhaust manifold nose area, reducing its temperature, lowering the cylinder head temperature, and decreasing the overall engine temperature, thus improving engine cooling performance. Attached Figure Description

[0016] Figure 1 One of the schematic diagrams of a water channel structure for a motorcycle engine cylinder head provided by the present invention;

[0017] Figure 2 A second schematic diagram of a water passage structure for a motorcycle engine cylinder head provided by the present invention;

[0018] Figure 3 A third schematic diagram of a water channel structure for a motorcycle engine cylinder head provided by the present invention;

[0019] Figure 4 An internal schematic diagram of the water channel structure of a motorcycle engine cylinder head provided by the present invention;

[0020] Figure 5 A schematic diagram of an insert for a water channel structure in a motorcycle engine cylinder head provided by the present invention;

[0021] In the diagram: 1. Cylinder head body; 11. Water inlet; 12. Water outlet; 13. Main cooling water channel; 14. Exhaust duct nose bridge cooling water channel; 15. Exhaust duct; 16. Embedding hole; 2. Embedded part; 21. Insertion part; 22. Operating part. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," "one," "another," etc., are used to distinguish similar elements, and these terms, as well as other similar terms, are not intended to limit the scope of the invention.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. In the various figures, the same or corresponding elements are represented by corresponding reference numerals (e.g., elements identified by "1XX" and "2XX" have the same structure and similar function).

[0025] Reference Figures 1 to 5 A preferred embodiment of the present invention: A water channel structure for a motorcycle engine cylinder head includes a cylinder head body 1, wherein the cylinder head body 1 is provided with an inlet 11 and an outlet 12, and a main cooling water channel 13 and an exhaust nose bridge cooling water channel 14 are provided within the cylinder head body 1. The main cooling water channel 13 is connected to the inlet 11 and the outlet 12. The exhaust nose bridge cooling water channel 14 is disposed in the nose bridge area between two exhaust channels 15 and is connected to the main cooling water channel 13. An insert 2 is added inside the exhaust nose bridge cooling water channel 14, and the insert 2 is used to divide the exhaust nose bridge cooling water channel 14 into two cooling water paths.

[0026] This invention provides an insert 2 within the exhaust duct nose cooling channel 14, which divides the exhaust duct nose cooling channel 14 into two cooling water paths. As cooling water flows in from the inlet 11, through the main cooling water channel 13, and out from the outlet 12, the insert 2 narrows the exhaust duct nose cooling channel 14, increasing the water velocity and impact force. Consequently, within the same time frame, the cooling water absorbs more heat from both sides of the exhaust duct 15, thereby improving the cooling capacity of the exhaust duct nose area, reducing the temperature of the exhaust duct nose, the cylinder head body 1, and the entire engine temperature, and enhancing the engine cooling effect.

[0027] As a preferred embodiment of the present invention, it may also have the following additional technical features: the cylinder head body 1 is provided with an embedding hole 16 that communicates with the exhaust port nose bridge cooling water channel 14, and the embedding member 2 is at least partially inserted into the embedding hole 16 to divide the exhaust port nose bridge cooling water channel 14 into two cooling water channels.

[0028] In this embodiment, by providing the embedding hole 16, the embedding part 2 can be installed quickly, which is simple to install and easy to operate.

[0029] As a preferred embodiment of the present invention, it may also have the following additional technical features: (Refer to...) Figure 4 The insert 2 includes an insertion part 21 located in the exhaust duct nose bridge cooling water channel 14 and an operating part 22 protruding from the surface of the cylinder head body 1.

[0030] In this embodiment, the exhaust duct nose bridge cooling water channel 14 is divided into two cooling water channels by the insertion part 21, and the operation part 22 is provided to facilitate the adjustment of the insertion depth of the insertion part 21 into the exhaust duct nose bridge cooling water channel 14.

[0031] As a preferred embodiment of the present invention, it may also have the following additional technical features: the insertion part 21 is cylindrical. Of course, the insertion part 21 may also be other shapes, such as square or irregular shapes, which are not specifically limited here.

[0032] As a preferred embodiment of the present invention, it may also have the following additional technical features: the embedding hole 16 has an internal thread, and the insertion part 21 has an external thread that matches the internal thread.

[0033] In this embodiment, the insert 2 and the cylinder head body 1 are connected together by matching external and internal threads, which has the characteristics of low cost and simple assembly.

[0034] As a preferred embodiment of the present invention, it may also have the following additional technical features: the insert 2 is a bolt. Of course, the insert 2 can also be other structures, as long as it can divide the exhaust duct nose bridge cooling water channel 14 into two cooling water channels, which is not specifically limited here.

[0035] As a preferred embodiment of the present invention, it may also have the following additional technical features: the insert 2 is located in the middle of the exhaust duct nose bridge cooling water channel 14. This ensures that the widths of the two cooling water channels are consistent, guaranteeing uniform water velocity on both sides.

[0036] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.

[0037] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A water passage structure of a cylinder head of a motorcycle engine, characterized by, The cylinder head body (1) includes a cylinder head body (1) with an inlet (11) and an outlet (12). The cylinder head body (1) has a main cooling water channel (13) and an exhaust nose bridge cooling water channel (14) inside. The main cooling water channel (13) is connected to the inlet (11) and the outlet (12). The exhaust nose bridge cooling water channel (14) is located in the nose bridge area between two exhaust channels (15) and is connected to the main cooling water channel (13). An insert (2) is added inside the exhaust nose bridge cooling water channel (14). The insert (2) is used to divide the exhaust nose bridge cooling water channel (14) into two cooling water paths. The cylinder head body (1) has an insertion hole (16) that communicates with the exhaust port nose bridge cooling water channel (14). The insert (2) is at least partially inserted into the insertion hole (16) to divide the exhaust port nose bridge cooling water channel (14) into two cooling water channels. The insert (2) includes an insertion part (21) located in the exhaust port nose bridge cooling water channel (14) and an operating part (22) protruding from the surface of the cylinder head body (1); The insertion part (21) is cylindrical; The embedding hole (16) has an internal thread, and the insertion part (21) has an external thread that matches the internal thread.

2. The water channel structure of the motorcycle engine cylinder head as described in claim 1, characterized in that, The insert (2) is a bolt.

3. The water channel structure of the motorcycle engine cylinder head as described in claim 1, characterized in that, The insert (2) is located in the middle of the exhaust duct nose bridge cooling water channel (14).

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