Pedal hybrid motorcycle engine with counter shaft mechanism

Abstract

A pedal hybrid motorcycle engine with a balance shaft mechanism, comprising a cylinder head, a cylinder body, left and right box bodies, the inside of the left and right box bodies is provided with a crankshaft assembly through a crankshaft assembly hole; one end of the crankshaft assembly is provided with a CVT driving disc assembly, the other end is provided with an ISG magneto; the balance shaft assembly is arranged above the front of the crankshaft assembly through a balance shaft assembly hole; a plurality of bolt holes are arranged near the edge of the balance shaft assembly hole; the distance between the center of the bolt hole and the edge of the balance shaft assembly hole is A; the distance between the center of the balance shaft assembly hole and the center of the crankshaft assembly hole is E; the included angle between the center line of the balance shaft in the vertical direction and the center line of the crankshaft assembly hole and the balance shaft assembly hole is b; the included angle between the center line of the crankshaft assembly hole and the balance shaft assembly hole and the cylinder block joint surface is d. The balance shaft assembly is introduced into the moped hybrid engine, the original vehicle grade is improved, the driving comfort is improved, the engine suspension position is not changed, and the engine frame is universal with the existing unbalanced shaft engine.

Description

Technical Field

[0001] This utility model relates to motorcycle engine technology, specifically to a pedal hybrid motorcycle engine with a balance shaft mechanism. Background Technology

[0002] In the domestic market, non-hybrid motorcycles with balance shaft engines employ a separate starter motor and magneto design. The starter motor is responsible for starting the engine, while the traditional magneto generates electricity and provides a signal. Each motor performs its specific function, and the energy transfer process typically involves: electrical signal → starter motor → double gear → disc gear → traditional magneto → ..., powered by gasoline / diesel combustion. Hybrid scooter engines, however, eliminate both the starter motor and traditional magneto, adding only an ISG magneto. The energy transfer process is: electrical signal → controller → ISG magneto → ... However, hybrid scooter engines have more complex operating conditions. Compared to single-fuel engines, the power coupling and switching between the engine and electric motor may generate more additional impact vibrations, affecting the vehicle's agility and comfort, reducing product competitiveness and reliability. Currently, engines with balance shaft structures exist in non-hybrid motorcycles, but are not yet used in hybrid scooter engines. Summary of the Invention

[0003] In view of the aforementioned technical problems, the purpose of this utility model is to propose a pedal hybrid motorcycle engine with a balance shaft mechanism.

[0004] The purpose of this utility model is achieved through the following technical solution. According to this utility model, a pedal-powered hybrid motorcycle engine with a balance shaft mechanism includes a cylinder head, a cylinder block, left and right housings, an engine suspension, and a main bracket mounting hole. A crankshaft assembly is installed inside the left and right housings through a crankshaft assembly hole. One end of the crankshaft assembly is equipped with a CVT drive disc assembly, and the other end is equipped with an ISG magneto. A balance shaft assembly is installed inside the left and right housings through a balance shaft assembly hole, and the balance shaft assembly is located in front of and above the crankshaft assembly. Several bolt holes are provided near the edge of the balance shaft assembly hole. The distance between the center of the bolt hole and the edge of the balance shaft assembly hole is A; the distance between the center of the balance shaft assembly hole and the center of the crankshaft assembly hole is E. When the engine has a small displacement, the value of A is 5mm≤A≤9mm, E≤the diameter of the crankshaft assembly hole, and the angle b between the line connecting the centers of the crankshaft assembly hole and the balance shaft assembly hole and the vertical centerline of the balance shaft assembly hole is 10°~30°. When the engine has a medium or large displacement, the value of A is A≥6mm, E≤the distance between the cylinder block mating surface and the center of the crankshaft assembly hole, and the angle d between the line connecting the centers of the crankshaft assembly hole and the balance shaft assembly hole and the cylinder block mating surface is 20°~30°.

[0005] Based on the aforementioned technical solution, this utility model has the following beneficial effects: introducing the balance shaft assembly into the hybrid engine of the scooter improves the original model's grade, enhances driving comfort, accelerates the development speed of new products, and reduces the potential for additional impact vibrations during the power coupling and switching process between the engine and the electric motor; however, it does not change the engine suspension position, making it compatible with existing non-balance shaft engine frames, greatly improving the frame's versatility, reducing design costs, and reducing the storage and management costs of similar components such as the frame.

[0006] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of a small-displacement pedal hybrid motorcycle engine with a balance shaft mechanism, according to the first embodiment of this utility model.

[0008] Figure 2 This is a cross-sectional view of the first embodiment of the present invention - a small-displacement pedal hybrid motorcycle engine with a balance shaft mechanism.

[0009] Figure 3 This is a schematic diagram of the structure of the crankshaft assembly holes and balance shaft assembly holes in the left and right housings of a small-displacement pedal hybrid motorcycle engine with a balance shaft mechanism, according to the first embodiment of this utility model.

[0010] Figure 4 This is a schematic diagram of the CVT drive disc assembly structure of a small-displacement pedal hybrid motorcycle engine with a balance shaft mechanism, according to the first embodiment of this utility model.

[0011] Figure 5 This is a schematic diagram of the heat dissipation structure of a small-displacement pedal hybrid motorcycle engine with a balance shaft mechanism, according to the first embodiment of this utility model.

[0012] Figure 6 This is a schematic diagram of the structure of a medium-to-high displacement pedal hybrid motorcycle engine with a balance shaft mechanism, according to the second embodiment of this utility model.

[0013] Figure 7 This is a cross-sectional view of the second embodiment of the present invention - a medium-to-high displacement pedal hybrid motorcycle engine with a balance shaft mechanism.

[0014] Figure 8This is a schematic diagram of the heat dissipation structure of a medium-to-high displacement scooter hybrid motorcycle engine with a balance shaft mechanism, according to the second embodiment of this utility model.

[0015] Figure 9 This is a schematic diagram of the structure of the crankshaft assembly holes and balance shaft assembly holes in the left and right housings of a medium-to-high displacement scooter hybrid motorcycle engine with a balance shaft mechanism, according to the second embodiment of this utility model.

[0016] Figure 10 This is a schematic diagram of the CVT drive disc assembly in a medium-to-high displacement scooter hybrid motorcycle engine with a balance shaft mechanism, according to the second embodiment of this utility model.

[0017] Reference numerals: 1. Cylinder head, 2. Cylinder block, 3. Left and right housings, 4. Balance shaft assembly, 401. Bolt hole, 5. Crankshaft assembly, 6. Engine suspension, 7. Main bracket mounting hole, 8. ISG magneto, 9. Balance shaft assembly hole, 10. Crankshaft assembly hole, 11. Air intake cover, 12. Left housing cover, 13. CVT drive disc assembly, 14. Oil separator, 15. Fan, 16. Radiator tank, 17. Radiator cover, 18. Water pipe, 19. Right housing cover, 20. Cylinder housing mating surface. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Please see Figures 1 to 5 This is a schematic diagram of the first embodiment of the present invention - a small-displacement scooter hybrid motorcycle engine with a balance shaft mechanism. The existing small-displacement scooter hybrid motorcycle engine includes a cylinder head 1, a cylinder block 2, left and right housings 3, an engine suspension 6, a main bracket mounting hole 7, an ISG magneto 8, an air intake cover 11, a left housing cover 12, a CVT drive disc assembly 13, an oil separator 14, a fan 15, a radiator water tank 16, a radiator cover 17, and a right housing cover 19. The functions of the aforementioned components and the connection relationships between the components are existing technologies and will only be briefly described here: The crankshaft assembly 5 is provided inside the left and right housings 3 through the crankshaft assembly hole 10. One end of the crankshaft assembly is provided with a CVT drive disc assembly, and the other end is provided with an ISG magneto.

[0019] Based on the aforementioned existing structure, in this embodiment, a balance shaft assembly is provided inside the left and right housings through the balance shaft assembly hole 9, and the balance shaft assembly is located in front of and above the crankshaft assembly 5; a number of bolt holes 401 are provided near the edge of the balance shaft assembly hole, and the aforementioned bolt holes 401 and multiple bolt holes in other positions are used together for the combination and fixation of the left and right housings, housings and housing covers, the distance between the center of the bolt hole 401 and the edge of the balance shaft assembly hole 9 is A, and the distance between the center of the balance shaft assembly hole 9 and the center of the crankshaft assembly hole 10 is E.

[0020] In the first embodiment of this utility model, i.e., when the engine has a small displacement, please refer to... Figure 3 The distance A between the center of bolt hole 401 and the edge of the balance shaft assembly hole is 5mm ≤ A ≤ 9mm; to ensure the compactness of the left and right engine housings, the distance E between the center of balance shaft assembly hole 9 and the center of crankshaft assembly hole 10 should be ≤ the diameter of the crankshaft assembly hole; to make the engine with balance shaft structure more versatile for the chassis, while keeping the engine suspension unchanged, the angle b between the line connecting the centers of the crankshaft assembly hole and the balance shaft assembly hole and the center line of the balance shaft assembly hole in the vertical direction is 10°~30°.

[0021] Please see Figures 6 to 10 This is a schematic diagram of the second embodiment of the present invention - a medium-to-high displacement scooter hybrid motorcycle engine with a balance shaft mechanism. Existing medium-to-high displacement scooter hybrid motorcycle engines include a cylinder head 1, a cylinder block 2, left and right housings 3, an engine suspension 6, a main bracket mounting hole 7, an ISG magneto 8, an air intake cover 11, a left housing cover 12, a CVT drive disc assembly 13, an oil separator 14, a radiator tank 16, water pipes 18, and a right housing cover 19. The functions of the aforementioned components and the connections between them are existing technologies and will only be briefly described here: A crankshaft assembly 5 is installed inside the left and right housings 3 through a crankshaft assembly hole 10. One end of the crankshaft assembly is equipped with the CVT drive disc assembly 13, and the other end is equipped with the ISG magneto 8. The radiator tank 16 is connected to the left and right housings through water pipes 18 and is mounted on the motorcycle frame.

[0022] Based on the aforementioned existing structure, in this embodiment, a balance shaft assembly is provided inside the left and right housings through the balance shaft assembly hole 9, and the balance shaft assembly is located in front of and above the crankshaft assembly 5; a number of bolt holes 401 are provided near the edge of the balance shaft assembly hole, and the aforementioned bolt holes 401 and multiple bolt holes in other positions are used together for the combination and fixation of the left and right housings, housings and housing covers, the distance between the center of the bolt hole 401 and the edge of the balance shaft assembly hole 9 is A, and the distance between the center of the balance shaft assembly hole 9 and the center of the crankshaft assembly hole 10 is E.

[0023] In the second embodiment of this utility model, when the engine has a medium to high displacement, the increased engine displacement corresponds to an increase in the power of the ISG magneto and an increase in the size of the left and right housings. To ensure both increased engine displacement and motorcycle riding comfort, please refer to [the relevant documentation / reference needed]. Figure 9The distance A between the center of the bolt hole and the edge of the balance shaft assembly hole should be ≥ 6mm. To ensure the compactness of the engine housing, the distance E between the center of the balance shaft assembly hole 9 and the center of the crankshaft assembly hole 10 should be ≤ the distance between the cylinder block 2 and the cylinder housing mating surface between the cylinder block 2 and the left and right housings 3 and the center of the crankshaft assembly hole 10. To make the balance shaft engine more versatile for the chassis and keep the engine suspension unchanged, the angle d between the line connecting the centers of the crankshaft assembly hole 10 and the balance shaft assembly hole 9 and the cylinder housing mating surface 20 should be 20°~30°.

[0024] Installing a balance shaft structure in a scooter hybrid equipped with an ISG magneto enhances the original model's quality and improves riding comfort. It also reduces the power coupling between the engine and electric motor, minimizing potential additional impact and vibration during switching. This accelerates new product development and minimizes changes to the overall engine layout, thus reducing design costs. Furthermore, by only adding the balance shaft assembly while keeping the cylinder block and engine suspension positions unchanged, the frame's versatility is greatly improved. Adaptive modifications to the engine's internal structure are made based on its displacement to avoid excessive changes to the overall engine layout and maintain riding comfort when the engine displacement increases.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the design and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A pedal-powered hybrid motorcycle engine with a balance shaft mechanism, comprising a cylinder head (1), a cylinder block (2), left and right housings (3), an engine suspension (6), and a main bracket mounting hole (7), wherein a crankshaft assembly (5) is provided inside the left and right housings (3) through a crankshaft assembly hole (10), and a CVT drive disc assembly (13) is provided at one end of the crankshaft assembly (5) and an ISG magneto (8) is provided at the other end; characterized in that: The left and right housings are equipped with balance shaft assemblies (4) through balance shaft assembly holes (9) and the balance shaft assembly is located in front of and above the crankshaft assembly; a number of bolt holes (401) are provided near the edge of the balance shaft assembly hole (9), the distance between the center of the bolt hole and the edge of the balance shaft assembly hole is A, and the distance between the center of the balance shaft assembly hole and the center of the crankshaft assembly hole is E; When the engine has a small displacement, the value of A is 5mm≤A≤9mm, E≤the diameter of the crankshaft assembly hole, and the angle b between the center line connecting the crankshaft assembly hole (10) and the balance shaft assembly hole (9) and the center line of the balance shaft assembly hole (9) in the vertical direction is 10°~30°. When the engine has a medium or large displacement, the value of A is A≥6mm, E≤the distance between the cylinder box mating surface (20) and the center of the crankshaft assembly hole, and the angle d between the center line connecting the crankshaft assembly hole (10) and the balance shaft assembly hole (9) and the cylinder box mating surface (20) is 20°~30°.

Images