Single ball valve type motorcycle fuel steam collecting system

Abstract

The invention discloses a single ball valve type motorcycle fuel steam collecting system, which comprises an oil tank, a steam collecting tube, an anti-roll valve and a carbon tank, and is characterized in that: the anti-roll valve is arranged inside the oil tank and fixed on the top of the oil tank; an air inlet is formed at the front end of the anti-roll valve; the rear end of the valve is fixedly connected to the front end of the steam collecting tube and is communicated with the steam collecting tube; the anti-roll valve comprises a top plate and a V-shaped bottom plate structure which consists of two oppositely arranged inclined panels; a rolling ball is arranged at the bottom of the bottom plate; a sealing ring is arranged on the left and right sides of the rolling ball respectively; the sealing rings are vertically fixed on a corresponding inclined panel at the bottom respectively; and an air hole is formed at the rear end of the anti-roll valve close to the top plate. The single ball valve type motorcycle fuel steam collecting system has the advantages of preventing fuel from flowing into the fuel steam collecting tube and guaranteeing the normal collection of fuel steam by the collecting tube and normal adsorption effect of the carbon tank, along with simple structure, low cost, reliable work and long service life.

Description

technical field [0001] The invention belongs to the technology used on motorcycles, in particular to a fuel vapor collection system for motorcycles. Background technique [0002] At present, most motorcycle fuel vapor collection systems include fuel tanks, fuel vapor collection pipes, adsorption pipes, and carbon canisters. Fuel vapor collection pipes are generally made of corrosion-resistant metal materials, such as copper, and their front ends are fixed on the top of the fuel tank. like figure 1 As shown, the fuel vapor collection pipe 2 is fixed in the fuel tank by welding its front end to the top of the fuel tank 1. The front end of the collection pipe 2 is the fuel vapor collection port. Because it is close to the top wall of the fuel tank, when the motorcycle is working normally Can always be above the fuel liquid level, the lower end of the fuel vapor collection pipe 2 passes through the tank body of the fuel tank 1 and is connected with the air inlet of the anti-du...

AI Technical Summary

Problems solved by technology

[0003] Although the fuel vapor in the fuel tank enters the carbon tank after being collected, and is absorbed by the carbon tank and then enters the engine for use, which achieves a certain fuel-saving effect, but there are still the following deficiencies: the traditional anti-roll valve is installed outside the fuel tank. Only when the car body is completely dumped can it play an anti-tilt role, and because the valve body is generally made of plastic, it is easy to damage

When the motorcycle rolls or the road conditions are bumpy when driving, the fuel tank tilts too much so that the collection port of the fuel vapor collection pipe is submerged in the fuel, causing the fuel in the fuel tank to directly enter the fuel vapor collection pipe. When the motorcycle is reset, it enters The fuel in the fuel vapor collection pipe will enter the anti-dump valve and pass through the air passage in it to finally flow into the carbon canister. After the carbon canister is supersaturated with fuel, not only the temperature rises sharply, which seriously affects its service life, but also makes the adsorption function of fuel vapor invalid. , the fuel will also leak out through the vent hole set at the bottom of the carbon tank; at the same time, part of the fuel may remain in the collection system and cause pipeline blockage, resulting in loss of fuel vapor collection function

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