Motorcycle fuel evaporation control system

Abstract

The invention discloses a motorcycle fuel evaporation control system, comprising a fuel tank, a fuel tank lock installation seat, a lock cover, a lock body, a sealing gasket, an adsorption tube, a carbon canister, a desorption tube, a carburetor, a fuel tube and a fuel switch, wherein the outlet of the carbon canister is connected with the carburetor by the desorption tube; the fuel inlet of the carburetor is connected with the fuel switch at the bottom of the fuel tank by the fuel tube; the fuel tank lock installation seat is fixed on a refill opening installation seat at the top of the fuel tank and is hinged with the lock cover; the bottom of the lock cover is fixed with a panel at the top of the lock body by the sealing gasket; and the gas outlet of a pressure balance channel is arranged on the panel and is communicated with the inlet of the carbon canister by a pipeline. The system not only can balance the pressure inside and outside the fuel tank and ensure the fuel tank to normally supply fuel to the carburetor via a fuel tank switch, but also can adsorb the fuel vapor, prevent the fuel vapor from being exhausted into the atmosphere to pollute the environment and avoid fuel waste, and has the characteristics of reasonable design, easy implementation, reliable performance, low cost, strong universality, etc.

Description

technical field [0001] The invention belongs to the technical field of motorcycles, and in particular relates to a fuel evaporation control system on motorcycles. Background technique [0002] The motorcycle fuel tank lock is installed on the fuel filler mounting seat on the top of the fuel tank, which locks the fuel tank filler and plays the role of oil gas collection and sealing. Such as image 3 As shown, the fuel tank lock is composed of four parts: a fuel tank lock mounting base 2, a lock cover 3, a lock body 4 and a gasket 5, wherein the fuel tank lock mounting base 2 is fastened to the fuel filler mounting base 1a of the fuel tank 1 by bolts. A lock cover 3 is arranged on the fuel tank lock mounting seat 2, and the lock cover 3 is hingedly connected with the fuel tank lock mounting seat 2, and the lock cover 3 can be overturned relative to the fuel tank lock mounting seat 2. The lock body 4 is located below the lock cover 3, and a gasket 5 is arranged therebetween, a...

AI Technical Summary

Problems solved by technology

[0004] 1. The anti-roll valve needs to be processed separately, and it needs to be equipped with accessories such as hoops, which increases the production cost of the motorcycle

[0005] 2. Different models of motorcycles have different fuel tank structures. The elbows connected to the openings in the fuel tanks of the above scheme have poor versatility, strange shapes, difficult processing, and high production costs. The versatility is also poor, which also increases the transformation cost

[0006] 3. The anti-dump valve is outside the fuel tank. When the fuel level in the fuel tank is high, although the elbow can prevent the fuel from splashing into the fuel evaporation pipe, when the motorcycle tilts or falls, the fuel may still Entering the fuel evaporation tube through the elbow, it cannot flow back to the fuel tank, which will cause pipeline blockage, on the one hand, the function of absorbing oil vapor will be invalid; Normal oil supply of the oiler

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