Improved fuel evaporation structure

Abstract

The utility model provides an improved fuel oil evaporation structure which comprises a main oil tank, an auxiliary oil tank, a motorcycle frame body, an activated carbon tank, a fuel oil filter and a carbon tank electromagnetic valve and further comprises a dumping valve, a first evaporation oil pipe, a second evaporation oil pipe, a third evaporation oil pipe and a fourth evaporation oil pipe. According to the fuel oil evaporation structure, the arrangement of the fuel oil evaporation structure is optimized, a fuel oil pipeline is shortened, wiring in the middle of the pipeline is reduced, and therefore the flowing resistance of fuel oil flowing is reduced, and the fuel oil evaporation structure has the advantages of being energy-saving, environment-friendly, energy-saving, environment-friendly, energy-saving, environment-friendly, energy-saving, environment-friendly, energy-saving, environment-friendly, energy-saving and environment-friendly. Moreover, as the connection points of the pipelines are reduced, the leakage of fuel steam is reduced, the pipelines are reduced, the material cost in production is reduced, and the later maintenance cost is also reduced; meanwhile, the utilization rate of the space in the vehicle is higher.

Description

An improved fuel evaporation structure Technical Field

[0001] This utility model belongs to the technical field of fuel evaporation system and relates to an improved fuel evaporation structure. Background Technology

[0002] With increasingly stringent global emission regulations, fuel vaporization system emission control has become a key indicator of vehicle environmental performance. A traditional motorcycle fuel vaporization system consists of a fuel tank, activated carbon canister, carbon canister solenoid valve, and tilt valve. Its layout must balance fuel vapor adsorption efficiency, system sealing, and adaptability to the overall vehicle space.

[0003] However, existing fuel evaporation systems often do not change with the movement of the fuel tank, thus adopting a decentralized layout, with the evaporation system generally located at the rear of the vehicle.

[0004] The existing technology has an overly dispersed evaporator arrangement and fuel tank, resulting in excessively long pipelines that affect fuel supply efficiency.

[0005] Long pipelines are prone to fuel vapor condensation due to temperature differences, which affects the adsorption efficiency of activated carbon canisters; excessively long and multi-ended pipeline designs increase the risk of leakage, and the complex process increases production and manufacturing costs. Summary of the Invention

[0006] The purpose of this utility model is to provide an improved fuel evaporation structure, which aims to solve the problems of poor vehicle environmental performance and increased wiring and maintenance costs caused by excessively long pipelines and unreasonable layout.

[0007] The objective of this utility model can be achieved through the following technical solution: an improved fuel evaporation structure, including a main fuel tank, an auxiliary fuel tank, a motorcycle frame, an activated carbon canister, a fuel filter, and a carbon canister solenoid valve, and also including a tilt valve, an evaporation oil pipe one, an evaporation oil pipe two, an evaporation oil pipe three, and an evaporation oil pipe four. One end of the evaporation oil pipe one is connected to the evaporation oil pipe two through the tilt valve. The evaporation oil pipe two is connected to the inlet of the activated carbon canister and is connected to the evaporation oil pipe three through the activated carbon canister. One end of the evaporation oil pipe three is connected to the inlet of the carbon canister solenoid valve. The carbon canister solenoid valve is connected to the engine throttle valve installed on the motorcycle frame through the evaporation oil pipe four.

[0008] In the aforementioned improved fuel evaporation structure, the top of the auxiliary fuel tank is provided with a fuel evaporation outlet, and a sealing cap is installed at the fuel evaporation outlet. One end of the sealing cap is sealed and connected to the first evaporation oil pipe. The purpose of this arrangement is to allow the fuel evaporated inside the main fuel tank and the auxiliary fuel tank to enter the first evaporation oil pipe through the fuel evaporation outlet and the sealing cap, so that the evaporated fuel can enter the activated carbon canister along the second evaporation oil pipe.

[0009] In the aforementioned improved fuel evaporation structure, a one-way fuel outlet valve is installed at the fuel inlet of the main fuel tank. One end of the one-way fuel outlet valve is equipped with a fuel pipe connector, which is connected to a fuel filter via a fuel supply line. The fuel filter is connected to the engine throttle valve mounted on the motorcycle frame via a fuel supply line. The purpose of this arrangement is to deliver fuel from the main fuel tank to the engine throttle valve through the one-way fuel outlet valve, fuel pipe connector, and fuel supply line, where it is burned and converted into mechanical energy.

[0010] In the aforementioned improved fuel evaporation structure, a clamp is installed on the body of the activated carbon canister, which is connected to the motorcycle frame via bolts on the curved beam pipe. This design aims to secure the activated carbon canister effectively, avoiding spatial interference with the second and third evaporation oil pipes.

[0011] In the aforementioned improved fuel evaporation structure, a right-angle bracket is installed at the top of the carbon canister solenoid valve, and the carbon canister solenoid valve is threaded onto one side of the motorcycle frame main beam tube via the right-angle bracket; an angle plate bracket is inserted into the mounting hole of the tilt valve, and the tilt valve is welded to the other side of the motorcycle frame main beam tube via the angle plate bracket. This arrangement aims to improve the utilization of interior space, resulting in a compact and orderly arranged overall structure.

[0012] Compared with the prior art, the advantages of the improved fuel evaporation structure of this utility model are as follows: by optimizing the arrangement of the fuel evaporation structure, shortening the fuel pipeline, and reducing the number of connections in the pipeline, the flow resistance of fuel flow is reduced. Furthermore, because the number of pipeline connections is reduced, fuel vapor leakage is reduced. The reduction of pipelines lowers material costs in production and also reduces later maintenance costs. At the same time, it makes the utilization rate of vehicle interior space higher. Attached Figure Description

[0013] Figure 1 is a three-dimensional structural diagram of an improved fuel evaporation structure according to the present invention.

[0014] Figure 2 is a schematic diagram of the improved fuel evaporation structure of this utility model, showing the connection of evaporation oil pipe one and evaporation oil pipe two to a tilting valve.

[0015] Figure 3 is an enlarged structural schematic diagram of section A in Figure 1 of an improved fuel evaporation structure according to this utility model.

[0016] In the diagram: 1. Main fuel tank; 2. Auxiliary fuel tank; 3. Motorcycle frame; 4. Fuel evaporation outlet; 5. Tilting valve; 6. Fuel filter; 7. Activated carbon canister; 8. Carbon canister solenoid valve; 9. Evaporation oil pipe one; 10. Evaporation oil pipe two; 11. Evaporation oil pipe three; 12. Evaporation oil pipe four; 13. Sealing oil cap; 14. Angle plate bracket; 15. Right angle bracket; 16. Clamp; 17. Oil pipe connector; 18. One-way oil outlet valve. Detailed Implementation

[0017] 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.

[0018] As shown in Figures 1, 2 and 3, this utility model discloses an improved fuel evaporation structure;

[0019] The improved fuel evaporation structure includes a main fuel tank 1, an auxiliary fuel tank 2, a motorcycle frame 3, an activated carbon canister 7, a fuel filter 6, and a carbon canister solenoid valve 8. The main fuel tank 1 is installed on the fuel tank rack inside the motorcycle frame, and the auxiliary fuel tank 2 is installed on the side of the main beam tube of the motorcycle frame 3. The auxiliary fuel tank 2 is connected to the main fuel tank 1 through a fuel pipe.

[0020] A one-way fuel outlet valve 18 is installed at the fuel inlet of the main fuel tank 1. One end of the one-way fuel outlet valve 18 is provided with a fuel pipe connector 17. The fuel pipe connector 17 is connected to the fuel filter 6 through the fuel supply line. The fuel filter 6 is connected to the engine throttle valve installed on the motorcycle frame 3 through the fuel supply line. A clamp 16 is installed on the body of the activated carbon canister 7. The activated carbon canister 7 is connected to the motorcycle frame 3 by a bend tube bolt.

[0021] Example 1: As shown in Figure 2, the fuel evaporation structure also includes a tilt valve 5, an evaporation oil pipe 1 9, an evaporation oil pipe 2 10, an evaporation oil pipe 3 11, and an evaporation oil pipe 4 12. A fuel evaporation outlet 4 is provided at the top of the auxiliary fuel tank 2. A sealing oil cap 13 is installed at the fuel evaporation outlet 4. One end of the sealing oil cap 13 is sealed and connected to the evaporation oil pipe 1 9. A tilt valve 5 is installed at one end of the evaporation oil pipe 1 9. An evaporation oil pipe 2 10 is installed at the outlet of the tilt valve 5. One end of the evaporation oil pipe 2 10 is connected to the inlet of the activated carbon canister 7. An evaporation oil pipe 3 11 is installed at the top of the activated carbon canister 7. One end of the evaporation oil pipe 3 11 is connected to the inlet of the carbon canister solenoid valve 8. The outlet of the carbon canister solenoid valve 8 is connected to the evaporation oil pipe 4 12. The evaporation oil pipe 4 12 is connected to the engine throttle valve installed on the motorcycle frame 3.

[0022] As a variation of Embodiment 1, the fuel filter 6 has a one-way valve port that can be connected to the evaporation oil pipe 12. The outlet of the carbon canister solenoid valve 8 is connected to the evaporation oil pipe 12. The evaporation oil pipe 12 is directly connected to the one-way valve port of the fuel filter 6, which enables the fuel entering the engine throttle valve to be clean.

[0023] Furthermore, to ensure the orderly arrangement of the carbon canister solenoid valve 8 and the tilt valve 5 and improve the utilization of the interior space, a right-angle bracket 15 is installed on the top of the carbon canister solenoid valve 8. The carbon canister solenoid valve 8 is threaded onto one side of the main beam tube of the motorcycle frame 3 via the right-angle bracket 15. An angle plate bracket 14 is inserted into the mounting hole of the tilt valve 5, and the tilt valve 5 is welded to the other side of the main beam tube of the motorcycle frame 3 via the angle plate bracket 14. The tilt valve 5 and the auxiliary fuel tank 2 are located on the same side.

[0024] In terms of location, the activated carbon canister 7 and the fuel filter 6 are located at the front left of the frame (the fuel filter 6 is fixed between the two curved beam tubes of the frame).

[0025] Working principle: Fuel is added to the main fuel tank 1 through the auxiliary fuel tank 2 and fuel line. The fuel in the main fuel tank 1 is delivered to the engine throttle valve through the one-way fuel outlet valve 18, fuel line connector 17 and fuel supply line, where it is burned and converted into mechanical kinetic energy. Due to the heat generated by combustion, the fuel in the main fuel tank 1 evaporates. The evaporated fuel in the main fuel tank 1 flows through the auxiliary fuel tank 2 through the first evaporation fuel line 9, the tilt valve 5, and the second evaporation fuel line 10 into the activated carbon canister 7, where it is adsorbed by the activated carbon. If there is water vapor in the adsorption, it will be discharged through the drain hole at the bottom of the activated carbon canister 7.

[0026] When the motorcycle engine is running, the ECU (Electronic Control Unit) will control the carbon canister solenoid valve 8 at the appropriate time. After the carbon canister solenoid valve 8 is opened, the evaporated fuel adsorbed by the activated carbon canister 7 will enter the engine throttle valve through the evaporation oil pipe 3 11, the carbon canister solenoid valve 8, and the evaporation oil pipe 4 12. The evaporated fuel enters the engine for combustion, thereby controlling the emission of hydrocarbons.

[0027] When the vehicle is tilted, the tilt valve 5 will automatically close the passage between the auxiliary fuel tank 2 and the activated carbon canister 7 to prevent fuel from leaking into the atmosphere through the activated carbon canister 7.

[0028] This solution reduces the length of pipelines and the number of connections, reduces fuel vapor leakage, lowers production and maintenance costs, and improves the utilization of interior space.

[0029] The reduction in pipeline length lowers flow resistance, thereby improving the adsorption and desorption efficiency of the carbon canister; shorter pipeline length also reduces the likelihood of fuel vapor condensing in the pipeline.

[0030] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. An improved fuel evaporation structure, comprising a main fuel tank (1), an auxiliary fuel tank (2), a motorcycle frame (3), an activated carbon canister (7), a fuel filter (6), and a carbon canister solenoid valve (8), characterized in that, It also includes a tilt valve (5), an evaporator oil pipe one (9), an evaporator oil pipe two (10), an evaporator oil pipe three (11) and an evaporator oil pipe four (12). One end of the evaporator oil pipe one (9) is connected to the evaporator oil pipe two (10) through the tilt valve (5). The evaporator oil pipe two (10) is connected to the inlet of the activated carbon canister (7) and is connected to the evaporator oil pipe three (11) through the activated carbon canister (7). One end of the evaporator oil pipe three (11) is connected to the inlet of the carbon canister solenoid valve (8). The carbon canister solenoid valve (8) is connected to the engine throttle valve installed on the motorcycle frame (3) through the evaporator oil pipe four (12).

2. The improved fuel evaporation structure according to claim 1, characterized in that, The top of the auxiliary oil tank (2) is provided with a fuel evaporation outlet (4), and a sealing oil cap (13) is installed at the fuel evaporation outlet (4). One end of the sealing oil cap (13) is sealed to the evaporation oil pipe (9).

3. The improved fuel evaporation structure according to claim 1, characterized in that, A one-way oil outlet valve (18) is installed at the oil port of the main oil tank (1). One end of the one-way oil outlet valve (18) is provided with an oil pipe connector (17). The oil pipe connector (17) is connected to the fuel filter (6) through the oil supply line. The fuel filter (6) is connected to the engine throttle valve installed on the motorcycle frame (3) through the oil supply line.

4. The improved fuel evaporation structure according to claim 1, characterized in that, The activated carbon canister (7) is equipped with a clamp (16) on its body, and the activated carbon canister (7) is connected to the motorcycle frame (3) by a bend pipe bolt.

5. The improved fuel evaporation structure according to claim 1, characterized in that, The top of the carbon canister solenoid valve (8) is equipped with a right-angle bracket (15), and the carbon canister solenoid valve (8) is threaded onto the other side of the main beam tube of the motorcycle frame (3) through the right-angle bracket (15).

6. The improved fuel evaporation structure according to claim 1, characterized in that, An angle plate bracket (14) is inserted into the mounting hole of the tilt valve (5), and the tilt valve (5) is welded to one side of the main beam tube of the motorcycle frame (3) through the angle plate bracket (14).

7. An improved fuel evaporation structure according to claim 1, characterized in that, The main fuel tank (1) is installed on the fuel tank frame inside the motorcycle frame, and the auxiliary fuel tank (2) is installed on the side of the main beam tube of the motorcycle frame (3). The auxiliary fuel tank (2) is connected to the main fuel tank (1) through an oil pipe.

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