Motorcycle fuel supply system with low fuel tank

A technology of fuel supply system and motorcycle, applied in the direction of charging system, engine components, liquid fuel feeder, etc., can solve the problems such as the failure of the engine to start normally, the fuel pumping to the carburetor, etc., so as to solve the problem of difficult or impossible starting. Start-up, simple structure, innovative effect

Inactive Publication Date: 2013-01-16
力帆科技(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention is specially aimed at the motorcycle whose fuel tank is arranged lower than the carburetor. When the negative pressure in the negative pressure valve is insufficient, enough fuel cannot be pumped to the carburetor, resulting in the technical problem that the engine cannot start normally.

Method used

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  • Motorcycle fuel supply system with low fuel tank
  • Motorcycle fuel supply system with low fuel tank
  • Motorcycle fuel supply system with low fuel tank

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Embodiment Construction

[0013] Below by embodiment, in conjunction with accompanying drawing, the present invention is described in further detail:

[0014] Such as image 3 , Figure 4 The low fuel tank motorcycle oil supply system shown is composed of a fuel tank 1, an engine 2, an air filter 3, a carburetor 4, a negative pressure valve 5, an engine intake pipe 6, a fuel tank outlet pipe 7, and a carburetor oil inlet pipe 8. It is composed of negative pressure pipe 9, auxiliary fuel tank 10, auxiliary fuel tank return pipe 11 and first-time fuel filling port 11a. The fuel tank 1 has a fuel filling port 1a for filling the fuel tank 1 with fuel. The engine 2 is provided with an engine intake pipe 6'. The carburetor 4 is connected between the air filter 3 and the engine intake pipe 6, the fuel tank 1 is connected with the negative pressure valve 5 through the fuel tank oil outlet pipe 7, and the negative pressure valve 5 and the carburetor 4 are connected through the carburetor oil inlet pipe 8 Th...

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PUM

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Abstract

The invention discloses a motorcycle fuel supply system with a low fuel tank. The motorcycle fuel supply system with the low fuel tank comprises a fuel tank, an engine, an air filter, a carburetor and a negative pressure valve. The fuel tank is connected with the negative pressure valve through a fuel outlet pipe of the fuel tank and is lower than the carburetor. The negative pressure valve is connected with the carburetor through a fuel intake pipe of the carburetor. The negative pressure valve is connected with an air intake pipe of the engine through a negative pressure pipe. An auxiliary fuel tank is disposed on the fuel intake pipe of the carburetor and is connected with the fuel tank through a fuel return pipe of the auxiliary fuel tank. The auxiliary fuel tank is higher than the carburetor. When negative pressure in the negative pressure valve is insufficient during startup of the engine, the auxiliary fuel tank can supply sufficient fuel to the carburetor to guarantee fast and normal startup of the engine. Therefore, the problem that the engine of the motorcycle with the low fuel tank is difficult to start or fails to start is solved effectively. Additionally, a filling hole for primary use fuel is arranged at the top of the auxiliary fuel tank, so that fast startup of the engine in first use can be guaranteed.

Description

technical field [0001] The invention relates to a motorcycle fuel supply system, in particular to a fuel supply system with a fuel tank lower than a carburetor, especially suitable for scooter motorcycles. Background technique [0002] For scooters, due to the limitation of structure and space arrangement, the arrangement position of the fuel tank will be lower than the carburetor. Such as figure 1 , figure 2 The fuel supply system of the low-fuel-tank motorcycle shown is composed of a fuel tank 1, an engine 2, an air filter 3, a carburetor 4, and a negative pressure valve 5. The carburetor 4 is connected between the air filter 3 and the engine intake pipe 6, the fuel tank 1 is connected with the negative pressure valve 5 through the fuel tank oil outlet pipe 7, and the negative pressure valve 5 and the carburetor 4 are connected through the carburetor oil inlet pipe 8 The negative pressure valve 5 is connected with the engine intake pipe 6 through the negative pressure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/02
Inventor 骆思勇肖丽刘玉玲
Owner 力帆科技(集团)股份有限公司
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