Fuel oil evaporation control and oil level indication buoy structure for motorcycle

Abstract

A fuel oil evaporation control and oil level indication buoy structure for a motorcycle comprises a float bowl (4), a steam tube (5), a support (1), an outer ring (2), an inner ring (3) and an outlet (6) on the float bowl. The structure improves reliability of a fuel oil evaporation control system, and the safety of the total motorcycle is enhanced. Simultaneously, space utilization rate and reliability of the fuel oil evaporation system are greatly improved, space is greatly saved, modification to an oil tank of the motorcycle is small, and the buoy structure is installed conveniently.

Description

technical field [0001] The invention relates to a motorcycle fuel evaporation control and oil level indicating floating structure, in particular to a motorcycle equipped with a fuel evaporation control system. technical background [0002] The state-issued Motorcycle National III Standards has made clear restrictions on fuel evaporative emissions. In order to successfully pass the emission test and consistency test of the regulations, a fuel evaporation system must be installed. As the key to controlling fuel evaporative emissions, the fuel evaporation system has a great influence on its performance and function. However, due to the current motorcycles, especially domestic riding motorcycles, due to their limited space structure, the installation location and space are not enough, and the layout of the fuel evaporation system pipeline and the installation of parts have very high requirements, so that the entire fuel evaporation Installation of the system on the original mot...

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Problems solved by technology

[0004] 1. The installation of the fuel evaporation system increases the internal parts of the fuel tank, and its installation space is more cramped. If the position of the steam pipe is improper, it may interfere with the float and cause the float to lose its function

[0005] 2. The opening position of the steam pipe is fixed. Since it cannot be guaranteed that the opening is above the liquid level and facing upward in any case, when the vehicle is dumped or the fuel volume is too large, the fuel is easily poured back into the steam pipe and then enters the carbon tank. The working ability of the toner is reduced and the life is shortened

On the other hand, if the steam pipe is not designed properly, the fuel may be stored in the steam pipe. If it cannot be evaporated or removed in time, the internal pressure will drop due to the closed space inside the fuel tank and the drop of the oil level during the running of the vehicle. Under the action of external air pressure, Fuel cannot flow out of the fuel tank, causing fuel supply problems, and the engine will suddenly shut down, posing a great safety hazard

[0006] 4. Because the fuel vapor forms air resistance in the steam pipe or the fuel pours back to block the steam pipe, if the motorcycle is left standing for a long time or the pressure cannot be balanced during driving, the fuel may enter the carburetor under the action of internal pressure, causing the carburetor to fail , Intake pipe oil intake, etc.

[0007] The above reasons and possible problems have caused the reliability and safety of the motorcycle to decline after the fuel evaporation system is installed, and there have been various problems such as no fuel, steam pipes entering oil, and oil level indication failures.

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