Single-ball anti-slope valve for motorcycle fuel steam collection system

Abstract

The invention discloses a single-ball anti-slope valve for a motorcycle fuel stream collection system. The valve comprises a top plate and a bottom plate structure, wherein the top plate is a plane plate; the bottom plate structure is composed of two slope panels and has a V-shaped structure which is low in the middle and high at two sides; a ball is arranged on the bottom plate structure; two sealing rings are arranged on the left and right sides of the ball, vertically fixed on the slope panels of the bottom plate structure respectively, and fixedly connected with the top plate; the diameter of the ball is greater than the inner diameter of the sealing rings but less than the outer diameter of the sealing rings; a vent hole is arranged at the rear end of the anti-slope valve close to the top plate; and the anti-slope valve is communicated with a stream collection pipe through the vent hole. The valve has the advantages of simple structure, low cost and reliable operation.

Description

technical field [0001] The invention belongs to the technology used on fuel vehicles, in particular to a single-ball anti-roll valve used in a motorcycle fuel vapor collection system. 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...

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

Images