Dual-clutch engine for motorcycle

Abstract

The double-clutch engine comprises a first clutch and a second clutch which are symmetrically arranged left and right, an input shaft of the first clutch is a first input shaft, an input shaft of the second clutch is a second input shaft, the first input shaft and the second input shaft are separated from each other, a first shifting gear set is arranged on the first input shaft, and a second shifting gear set is arranged on the second input shaft. A second shifting gear set is arranged on the second input shaft, and the first input shaft and the second input shaft are integrally located between the first clutch and the second clutch. The two clutches are independently arranged on the left side and the right side of the engine and are convenient to disassemble and maintain.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle engine technology, and in particular to a dual-clutch engine for motorcycles. Background Technology

[0002] Most motorcycle engines currently sold on the market use a single-clutch structure, while some use a traditional dual-clutch structure. A traditional dual-clutch structure includes a double-layered main shaft consisting of nested hollow and solid shafts, and two clutches coaxially mounted on the same side of the main shaft. The hollow and solid shafts are each driven by a separate clutch. Figure 1 The dual-clutch mechanism described above has a complex structure and high manufacturing costs. Furthermore, if one clutch fails, the entire engine casing needs to be disassembled for troubleshooting. If parts need to be replaced, both clutches' corresponding main shafts and gears must be completely disassembled and reassembled. This makes repairs difficult and expensive. Summary of the Invention

[0003] In order to solve the above problems, the purpose of this utility model is to provide a dual-clutch engine for motorcycles, wherein the two clutches are independently set on the left and right sides of the engine.

[0004] A dual-clutch engine for motorcycles includes a first clutch and a second clutch arranged symmetrically on the left and right. The input shaft of the first clutch is a first input shaft, and the input shaft of the second clutch is a second input shaft. The first input shaft and the second input shaft are separated from each other. A first shift gear set is provided on the first input shaft, and a second shift gear set is provided on the second input shaft. The first input shaft and the second input shaft are located as a whole between the first clutch and the second clutch.

[0005] Preferably, the first input shaft and the second input shaft are coaxially arranged, with the second input shaft extending along the length of the first input shaft.

[0006] Preferably, the engine housing includes a bottom shell, a first side shell, a second side shell, a first upper shell, and a second upper shell that are detachably connected to each other. A first clutch is located inside the first side shell, a second clutch is located inside the second side shell, a first input shaft and a first shift gear set are located in the mounting space formed by a part of the bottom shell and the first upper shell, and a second input shaft and a second shift gear set are located in the mounting space formed by a part of the bottom shell and the second upper shell.

[0007] Preferably, the engine housing is provided with at least two support plates corresponding to the first input shaft and the second input shaft, the at least two support plates being located at both ends of the first input shaft or the second input shaft in the axial direction, and bearings for mounting the first input shaft or the second input shaft are provided thereon.

[0008] This invention, by employing the aforementioned solution, places the two clutches on opposite sides of the engine, allowing for maintenance and replacement by simply removing the cover of a single clutch. Furthermore, compared to a traditional dual-clutch transmission, it eliminates the need for additional processing costs, facilitates maintenance and replacement, and provides a more even weight distribution, which helps suppress engine vibration. Because the clutches are positioned at both ends, the number of gears controlled by a single clutch is reduced, allowing for a clearer engine gear selection. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a dual-clutch structure in the prior art;

[0010] Figure 2 This is a schematic diagram of the structure of this application.

[0011] Reference numerals: 1 First clutch, 2 Bearing, 3 Engine housing, 4 First input shaft, 5 First shift gear set, 6 Second shift gear set, 7 Second input shaft, 8 Second clutch. Detailed Implementation

[0012] The embodiments of this utility model are described in detail below.

[0013] like Figure 2 As shown, this embodiment provides a dual-clutch engine for a two-wheeled motorcycle, including a first clutch 1 and a second clutch 8. The two clutches control odd-numbered gears and even-numbered gears respectively, so that the two clutches can operate synchronously during gear shifting to improve shifting efficiency. The first clutch 1 and the second clutch 8 are symmetrically arranged on the left and right sides of the engine. The input shaft of the first clutch 1 is a first input shaft 4, and the input shaft of the second clutch 8 is a second input shaft 7. The first input shaft 4 and the second input shaft 7 are separated from each other. The first input shaft 4 is provided with a first shift gear set 5, and the second input shaft 7 is provided with a second shift gear set 6. The first input shaft 4 and the second input shaft 7 are located as a whole between the first clutch 1 and the second clutch 8.

[0014] With the above configuration, the two clutches and the input shaft are independently arranged, resulting in a simple structure. The arrangement of the clutches, their corresponding input shafts, and the transmission gear sets is clear, facilitating troubleshooting. Preferably, the engine housing 3 includes a bottom shell, a first side shell, a second side shell, a first upper shell, and a second upper shell, all detachably connected to each other. The first clutch 1 is located within the first side shell, and the second clutch 8 is located within the second side shell. The first input shaft 4 and the first shift gear set 5 are located within the mounting space formed by a portion of the bottom shell and the first upper shell, and the second input shaft 7 and the second shift gear set 6 are located within the mounting space formed by a portion of the bottom shell and the second upper shell. When it is necessary to inspect or repair the clutches or shift gear sets, the corresponding side shells can be removed, making inspection and repair convenient. In this embodiment, the engine housing 3 is provided with at least two support plates corresponding to the first input shaft 4 and the second input shaft 7, respectively. The at least two support plates are located at both ends of the first input shaft 4 or the second input shaft 7 in the axial direction, and bearings 2 for mounting the first input shaft 4 or the second input shaft 7 are provided on them. The support plate serves two purposes: firstly, it acts as a fixing seat for the first input shaft 4 and the second input shaft 7; secondly, it strengthens the engine housing 3, ensuring its strength. Preferably, the support plate is mounted on the bottom shell, providing support for the bearing 2 and the input shafts from the bottom. This results in a more stable support structure and requires higher overall strength from the bottom shell.

[0015] In this embodiment, the first input shaft 4 and the second input shaft 7 are coaxially arranged, with the second input shaft 7 extending along the length of the first input shaft 4. This arrangement reduces the space occupied within the engine compartment and results in a more rational layout.

[0016] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A dual-clutch engine for motorcycles, characterized in that, It includes a first clutch and a second clutch arranged symmetrically on the left and right. The input shaft of the first clutch is the first input shaft, and the input shaft of the second clutch is the second input shaft. The first input shaft and the second input shaft are separated from each other. The first input shaft is provided with a first shift gear set, and the second input shaft is provided with a second shift gear set. The first input shaft and the second input shaft are located as a whole between the first clutch and the second clutch.

2. The dual-clutch engine for motorcycles according to claim 1, characterized in that, The first input shaft and the second input shaft are coaxially arranged, with the second input shaft extending along the length of the first input shaft.

3. The dual-clutch engine for motorcycles according to claim 1, characterized in that, The engine housing includes a bottom shell, a first side shell, a second side shell, a first upper shell, and a second upper shell that are detachably connected to each other. A first clutch is located inside the first side shell, a second clutch is located inside the second side shell, a first input shaft and a first shift gear set are located in the mounting space formed by a part of the bottom shell and the first upper shell, and a second input shaft and a second shift gear set are located in the mounting space formed by a part of the bottom shell and the second upper shell.

4. The dual-clutch engine for motorcycles according to claim 3, characterized in that, The engine housing is provided with at least two support plates corresponding to the first input shaft and the second input shaft, respectively. The at least two support plates are located at both ends of the first input shaft or the second input shaft in the axial direction, and are provided with bearings for mounting the first input shaft or the second input shaft.

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