Plastic auxiliary fuel tank of two-wheeled motorcycle
By designing a plastic auxiliary fuel tank that connects to the front fuel tank of a two-wheeled motorcycle, the fuel tank capacity is increased, solving the problem of insufficient motorcycle range, achieving longer driving range and self-rescue capability, simplifying the installation process, and enhancing the resistance to deformation and lightweight performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIBET KAIYUE TECH CO LTD
- Filing Date
- 2024-12-31
- Publication Date
- 2026-04-21
AI Technical Summary
Existing motorcycles have limited fuel tank capacity, resulting in insufficient range, requiring frequent fuel level checks, and the possibility of needing roadside assistance due to insufficient fuel.
Design a plastic auxiliary fuel tank for two-wheeled motorcycles. By connecting it to the front fuel tank, it increases the additional fuel tank capacity. It is made of HDPE material and has an arc-shaped structure. It utilizes the narrow space and combines rubber pads for fastening to achieve stable fuel delivery and storage.
It improves the motorcycle's range, simplifies the installation process, enhances its resistance to deformation, reduces its weight, improves system utilization efficiency, and ensures that fuel is not lacking under harsh working conditions.
Smart Images

Figure CN224146079U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of motorcycle parts, and specifically relates to plastic auxiliary fuel tanks for two-wheeled motorcycles. Background Technology
[0002] The power source of a gasoline-powered motorcycle is mainly provided by the motorcycle fuel tank. Therefore, the motorcycle fuel tank is an essential component of the motorcycle. However, due to the limitation of installation space, the existing fuel tanks are usually only a single tank with limited capacity. The fuel tank is generally limited to a fixed amount and a fixed range, resulting in insufficient range. During the journey, it is necessary to check the fuel level of the tank at any time. When the fuel is low, the alarm usually indicates that the range is short and it is necessary to refuel in time. If refueling is not done in time, it is necessary to wait for roadside assistance. Utility Model Content
[0003] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a plastic auxiliary fuel tank for two-wheeled motorcycles. The technical problem to be solved by this utility model is: how to improve the range of motorcycles.
[0004] The above-mentioned technical objectives of this utility model can be achieved through the following technical solutions:
[0005] A plastic auxiliary fuel tank for a two-wheeled motorcycle includes: a front fuel tank, a fuel pump, an auxiliary fuel tank, a fuel system, and an engine. The fuel system includes a fuel line, a fuel connector, a fuel pump, and an electronic fuel injection (EFI) pipe. The key feature is that the front fuel tank and the auxiliary fuel tank are connected via a fixed through-hole; the fuel connector connects the auxiliary fuel tank's fuel line to the front fuel tank; and the fuel pump is secured to the auxiliary fuel tank with screws, delivering fuel from the auxiliary fuel tank to the motorcycle's EFI pipe.
[0006] Furthermore, the auxiliary fuel tank is made of HDPE.
[0007] Furthermore, the auxiliary fuel tank has an arc-shaped structure.
[0008] Furthermore, the auxiliary fuel tank has a fuel capacity of 4 liters for a driving range.
[0009] Furthermore, the auxiliary fuel tank is connected to the vehicle frame via three fixed positions.
[0010] Furthermore, the auxiliary fuel tank is connected to the vehicle frame via three fixed positions using rubber pads.
[0011] In summary, the beneficial effects of this utility model compared to the prior art are as follows:
[0012] 1. Through the design of a three-dimensional frame structure, it serves as a plastic auxiliary fuel tank, effectively improving the vehicle's mileage and avoiding roadside assistance measures for insufficient fuel, thereby enhancing the self-rescue capability under harsh working conditions.
[0013] 2. By designing structural features, the plastic auxiliary fuel tank structure is connected, reducing the need for screw fixing and simplifying the installation steps for fixing the plastic auxiliary fuel tank.
[0014] 3. Improve the deformation resistance of the plastic auxiliary fuel tank through structural topology optimization.
[0015] 4. By optimizing the structural topology, the weight of the plastic auxiliary fuel tank is reduced, thus improving the lightweight and performance-focused design.
[0016] 5. Through structural design, a plastic auxiliary fuel tank is incorporated into the mileage system, improving system utilization efficiency. Attached Figure Description
[0017] Figure 1 This is a diagram showing the overall layout and structure of the auxiliary fuel tank.
[0018] Figure 2 This is a front view of the overall connection method of the auxiliary fuel tank.
[0019] Figure 3 Left view of the overall connection method of the auxiliary fuel tank
[0020] Figure 4 Top view of the overall connection method of the auxiliary fuel tank;
[0021] Figure 5 This is the main view of the auxiliary fuel tank;
[0022] Figure 6 This is a bottom view of the auxiliary fuel tank.
[0023] Figure 7 This is a rear view of the auxiliary fuel tank.
[0024] Reference numerals: (1) front fuel tank; (2) fuel pump; (3) auxiliary fuel tank; (4) fuel system; (5) engine; Detailed Implementation
[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0026] like Figure 1 As shown, the plastic auxiliary fuel tank structure of this utility model includes: a front fuel tank (1), a fuel pump (2), an auxiliary fuel tank (3), a fuel circuit system (4), and an engine (5).
[0027] like Figures 2-4As shown, the auxiliary fuel tank connection method is as follows: the front fuel tank (1) and the auxiliary fuel tank (2) are connected through a fixed through hole. The entire fixed frame adopts a fixed mounting point structure design. The auxiliary fuel tank is made of HDPE, mainly for lightweight design, and facilitates the connection of the module part with the body cover to make the body appearance light. The front fuel tank (1) is also the main fuel tank. The engine (5) and the auxiliary fuel tank (3) adopt a strip arc structure. Its function is to utilize the small space to hide in the narrow space of the whole vehicle, making the stability of the whole vehicle stronger. Features 2-4 are fuel pipes connected to the main fuel tank for oil supply, which serves to It ensures that the auxiliary fuel tank maintains a fuel level of over 98%. Feature 2-6 is the fuel connector that fixes the auxiliary fuel tank, and its main purpose is to allow fuel to flow into the auxiliary fuel tank through this location. Feature 2-7 is the fuel pump, which mainly delivers fuel to the electronic fuel injection pipes 2-13 / 2-14 through pipe 2-8. Features 2-9 / 2-10 / 2-11 / 2-12 expel gas from the auxiliary fuel tank through the vent pipe. During use, the auxiliary fuel tank is always kept full. The front fuel tank is low on fuel, indicating that it is in refueling mode. The auxiliary fuel tank stores 4L of fuel for the driving range.
[0028] like Figure 4-6 The auxiliary fuel tank is connected as follows: The three mounting points of the auxiliary fuel tank (3) are fastened to the frame with I-beam adhesive and screw plates through the mounting through holes 3-1 / 3-2 / 3-3 respectively, and are clamped to the frame with rubber gaskets to form a load-bearing structure; the threaded hole 3-7 in the auxiliary fuel tank (3) is connected to the fuel inlet pipe fixing joint to input fuel into the auxiliary fuel tank (3) and the through hole 3-6 in the auxiliary fuel tank (3) is fixed with screws to allow the fuel tank to vent. The fuel pump in the auxiliary fuel tank (3) is fastened to the auxiliary fuel tank through the through hole 3-5 with screws, and outputs fuel to the electronic fuel injection pipe through the fuel pipe.
[0029] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A plastic auxiliary fuel tank for a two-wheeled motorcycle, comprising a front fuel tank (1), a fuel pump (2), an auxiliary fuel tank (3), a fuel system (4), and an engine (5), wherein the fuel system (4) comprises a fuel pipe, a fuel connector, a fuel pump (2), and electronic fuel injection pipes (2-13, 2-14), characterized in that: The auxiliary fuel tank (3) is connected to the fuel line of the front fuel tank (1) through a fixed through hole (3-6) and a fuel connector (2-6); The fuel pump (2) is fixedly installed on the fuel pump mounting position (3-5) of the auxiliary fuel tank (3). The fuel inlet of the fuel pump (2) is connected to the inside of the auxiliary fuel tank (3), and its fuel outlet is connected to the electronic injection pipe (2-13, 2-14) through the fuel pipe (2-8), thereby connecting the auxiliary fuel tank (3) to the fuel supply path of the engine (5). The auxiliary oil tank (3) is equipped with vent pipes (2-9, 2-10, 2-11, 2-12); The auxiliary fuel tank (3) is connected and fixed to the motorcycle frame through multiple mounting points (3-1, 3-2, 3-3).
2. The two-wheeled motorcycle plastic sub-tank according to claim 1, characterized in that: The auxiliary oil tank (3) is made of HDPE.
3. The two-wheeled motorcycle plastic sub-tank according to claim 1, characterized in that: The auxiliary oil tank (3) has a strip-shaped structure.
4. The two-wheeled motorcycle plastic sub-tank according to claim 1, characterized in that: The auxiliary fuel tank (3) has a capacity of 4L for driving distance.
5. The two-wheeled motorcycle plastic sub-tank according to claim 1, characterized in that: The auxiliary fuel tank (3) is connected to the vehicle frame through three mounting points (3-1, 3-2, 3-3), and rubber pads are provided at the connection points.