An engine

Abstract

This invention provides an engine comprising a cylinder block, a cylinder head body, and a spark plug body. The cylinder block houses a camshaft and a crankshaft, with the camshaft positioned above the crankshaft. The cylinder head body has a first side and a second side, with the first side positioned above the second side. The cylinder head body has a connecting seat and a mounting hole. The connecting seat is located on the first side and accommodates a tappet. The mounting hole is located on the second side, and the spark plug body is inserted into the mounting hole. This engine abandons the conventional design of mounting the spark plug above the tappet, solving the problems of inconvenient spark plug maintenance due to limited space in conventional designs, and the need to sacrifice fuel tank volume to accommodate the spark plug. As a result, the spark plug body's mounting position is more convenient for maintenance compared to conventional structures, and the overall engine space utilization is more rational, allowing for increased fuel tank volume within the same external dimensions.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to an engine. Background Technology

[0002] In traditional single-cylinder engines, the camshaft is typically positioned diagonally below the crankshaft, and correspondingly, the tappets are located below the valves. Consequently, the spark plugs are mounted on the cylinder head above the tappets. This spark plug arrangement can lead to inconvenient maintenance due to limited space. To address this, fuel tank volume is typically sacrificed to accommodate the spark plugs. Therefore, this paper proposes an engine design to solve both the inconvenience of spark plug maintenance due to limited space and the need to sacrifice fuel tank volume to reposition the spark plugs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an engine in which the installation position of the spark plug body is more convenient for maintenance compared with the conventional structure, and the space utilization of the whole engine is more reasonable, and the fuel tank volume can be increased under the same external dimensions.

[0004] To achieve the above objectives, this utility model provides an engine, including a cylinder block, a camshaft, a crankshaft, and a tappet, wherein the camshaft is located above the crankshaft; a cylinder head body, disposed on the cylinder block and inclined toward one side of the cylinder block, the cylinder head body having a first side and a second side opposite to each other, the first side being located above the second side, the cylinder head body having a connecting seat and a mounting hole, the connecting seat being located on the first side and used to accommodate the tappet, the mounting hole being located on the second side; and a spark plug body, inserted into the mounting hole.

[0005] Preferably, the tail end of the spark plug body is tilted downwards.

[0006] Preferably, the connecting seat has two push rod cavities.

[0007] Preferably, the cylinder head body has an intake side and an exhaust side, and the cylinder head body is provided with a first air duct that extends through the cylinder head body in a direction from the intake side toward the exhaust side.

[0008] Preferably, the cylinder head body is provided with a second air duct that communicates with the first air duct, and the second air duct extends along the second side toward the first side.

[0009] Preferably, the mounting hole is located inside the second air duct.

[0010] Preferably, the cylinder block is provided with an oil dipstick, which is located below the cylinder head body and is arranged on the same side as the spark plug body.

[0011] Preferably, it also includes a muffler and an exhaust pipe, the muffler being located above the cylinder block and the exhaust pipe being located on the exhaust side and connected to the muffler and the cylinder head body respectively.

[0012] Preferably, the exhaust pipe is located near the air outlet end of the first air duct.

[0013] Preferably, the cylinder body is provided with a support frame for supporting the muffler.

[0014] The beneficial effects of this utility model are:

[0015] This utility model discloses an engine in which the camshaft is positioned above the crankshaft, and the positions of the valves, rocker arms, and tappets are adaptively adjusted. Since the connecting seat for accommodating the tappets is located on the first side, the spark plug body is installed below the tappet. This eliminates the conventional design where the spark plug is installed above the tappet, solving the problems of inconvenient spark plug maintenance due to limited space in conventional designs, and the need to sacrifice fuel tank volume to make room for the spark plug. As a result, the spark plug body's installation position is more convenient for maintenance compared to conventional structures, and the overall engine space utilization is more rational, allowing for increased fuel tank volume within the same external dimensions. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of an engine provided in an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional schematic diagram of the engine;

[0019] Figure 3 This is a schematic diagram of the cylinder head body.

[0020] Figure 4 A structural schematic diagram of the cylinder head body from another perspective;

[0021] Figure 5 A schematic diagram of the structure of the muffler and cylinder block;

[0022] Figure 6 for Figure 5 A structural schematic diagram from another perspective under the condition;

[0023] Figure label:

[0024] 10. Cylinder block; 11. Camshaft; 12. Crankshaft; 13. Tappet; 14. Support bracket; 20. Cylinder head body; 21. First side; 22. Second side; 23. Connecting seat; 231. Tappet chamber; 24. Mounting hole; 25. Intake side; 26. Exhaust side; 27. First air duct; 28. Second air duct; 30. Spark plug body; 40. Cylinder head cover body; 50. Oil dipstick; 60. Muffler; 70. Exhaust pipe. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0026] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0027] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] like Figure 1-6 As shown, in one embodiment of this utility model, an engine is provided, including a cylinder block 10, a cylinder head body 20, and a spark plug body 30. The cylinder block 10 contains a camshaft 11 and a crankshaft 12, with the camshaft 11 positioned above the crankshaft 12. The cylinder head body 20 is mounted on the cylinder block 10 and tilted towards one side of the cylinder block 10. The cylinder head body 20 has a first side 21 and a second side 22, with the first side 21 located above the second side 22. The cylinder head body 20 has a connecting seat 23 and a mounting hole 24. The connecting seat 23 is located on the first side 21 and is used to accommodate a tappet 13. The mounting hole 24 is located on the second side 22, and the spark plug body 30 is inserted into the mounting hole 24.

[0032] This embodiment discloses an engine in which the positions of the valves, rocker arms, and tappets 13 are adaptively adjusted by placing the camshaft 11 above the crankshaft 12. Since the connecting seat 23 for accommodating the tappet 13 is located on the first side 21, the spark plug body 30 is installed below the tappet 13. This eliminates the conventional design where the spark plug is installed above the tappet 13, solving the problems of inconvenient spark plug maintenance due to limited space in conventional designs, and the need to sacrifice fuel tank volume to make room for the spark plug. As a result, the installation position of the spark plug body 30 is more convenient for maintenance compared to conventional structures, and the overall space utilization of the engine is more rational, allowing for increased fuel tank volume within the same external dimensions.

[0033] In one embodiment, a cylinder head cover body 40 is mounted on the cylinder head body 20, and the tail end of the spark plug body 30 is inclined downward, that is, the distance between the spark plug body 30 and the cylinder head cover body 40 gradually increases in the direction towards the tail end of the spark plug body 30. In this way, there is enough space between the tail end of the spark plug body 30 and the cylinder head cover body 40 to meet the maintenance requirements of the spark plug body 30.

[0034] In one embodiment, the connecting seat 23 has two tappet chambers 231. By concentrating the two tappet chambers 231 within the connecting seat 23, the space occupied by the cylinder head body 20 is reduced, thereby making the overall layout of the machine more compact.

[0035] In one embodiment, the cylinder head body 20 has an intake side 25 and an exhaust side 26. The cylinder head body 20 is provided with a first air duct 27, which extends through the cylinder head body 20 along the direction from the intake side 25 toward the exhaust side 26. The cylinder head body 20 has a first side 21, a second side 22, an intake side 25, and an exhaust side 26 on its four sides. During operation, the cooling airflow blows toward the cylinder head body 20 along the direction from the intake side toward the exhaust side 26. As the cooling airflow flows through the cylinder head body 20, it carries away some of the heat from the cylinder head body 20, thereby cooling the cylinder head body 20.

[0036] A portion of the cooling airflow will be blown into the first air duct 27, which will cool the internal sidewalls of the cylinder head body 20. At the same time, the first air duct 27 will improve the flow of the cooling airflow through the cylinder head body 20, and the area of ​​heat exchange between the cylinder head body 20 and the cooling airflow will be larger. In this way, the cooling and heat dissipation effect of the cylinder head body 20 will be improved.

[0037] In one embodiment, the cylinder head body 20 is provided with a second air duct 28 communicating with the first air duct 27, and the second air duct 28 extends along the second side 22 toward the first side 21. Cooling airflow can flow inside the cylinder head body 20 through the second air duct 28. The design of the second air duct 28 further increases the area for heat exchange between the cylinder head body 20 and the cooling airflow, thus further improving the cooling and heat dissipation effect of the cylinder head body 20.

[0038] In one embodiment, the mounting hole 24 is located inside the second air duct 28. As the cooling airflow flows through the second air duct 28, it will carry away some of the heat from the spark plug body 30, enabling the spark plug body 30 to operate at normal operating temperature.

[0039] In one embodiment, the cylinder block 10 is provided with an oil dipstick 50, which is located below the cylinder head body 20 and is arranged on the same side as the spark plug body 30. By designing the oil dipstick 50 and the spark plug body 30 on the same side, it is convenient to maintain the spark plug body 30 and the engine oil, thereby further improving the maintainability of the entire machine.

[0040] In one embodiment, the engine further includes a muffler 60 and an exhaust pipe 70. The muffler 60 is located above the cylinder block 10, and the exhaust pipe 70 is located on the exhaust side 26, connecting the muffler 60 and the cylinder head body 20. Since the cylinder head body 20 is inclined towards one side of the cylinder block 10, this provides space for the installation position of the muffler 60, resulting in a more compact overall engine layout. The cylinder block 10 is provided with a support frame 14 for supporting the muffler 60, thus enabling the muffler 60 to be securely mounted on the cylinder block 10.

[0041] In one embodiment, the exhaust pipe 70 is close to the first air duct 27. The air blown out from the first air duct 27 will blow towards the exhaust pipe 70, thereby carrying away the heat of the exhaust pipe 70, reducing the temperature of the exhaust pipe 70, and reducing the heat radiation of the exhaust pipe 70.

[0042] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An engine characterized by, include: The cylinder block (10) is provided with a camshaft (11), a crankshaft (12) and a tappet (13), wherein the camshaft (11) is located above the crankshaft (12); A cylinder head body (20) is disposed on the cylinder body (10) and inclined toward one side of the cylinder body (10). The cylinder head body (20) has a first side (21) and a second side (22) opposite to each other. The first side (21) is located above the second side (22). The cylinder head body (20) is provided with a connecting seat (23) and a mounting hole (24). The connecting seat (23) is located on the first side (21) and is used to accommodate the tappet (13). The mounting hole (24) is located on the second side (22). The spark plug body (30) is inserted into the mounting hole (24).

2. The engine of claim 1, wherein The tail end of the spark plug body (30) is tilted downward.

3. The engine of claim 1, wherein The connecting seat (23) is provided with two push rod (13) cavities.

4. The engine of claim 1, wherein The cylinder head body (20) has an intake side (25) and an exhaust side (26) opposite to each other. The cylinder head body (20) is provided with a first air duct (27), which runs through the cylinder head body (20) along the direction from the intake side (25) toward the exhaust side (26).

5. The engine of claim 4, wherein, The cylinder head body (20) is provided with a second air duct (28) that communicates with the first air duct (27), and the second air duct (28) extends along the second side (22) toward the first side (21).

6. The engine according to claim 5, characterized in that, The mounting hole (24) is located inside the second air duct (28).

7. The engine of any one of claims 1-6, wherein, The cylinder block (10) is provided with an oil dipstick (50), which is located below the cylinder head body (20) and is arranged on the same side as the spark plug body (30).

8. An engine according to any one of claims 4-6, characterised in that It also includes a muffler (60) and an exhaust pipe (70), the muffler (60) being located above the cylinder block (10) and the exhaust pipe (70) being located on the exhaust side (26), and being connected to the muffler (60) and the cylinder head body (20) respectively.

9. The engine of claim 8, wherein The exhaust pipe (70) is located near the air outlet of the first air duct (27).

10. The engine of claim 8, wherein The cylinder (10) is provided with a support frame (14) for supporting the muffler (60).

Images