Novel gasoline refueling system for automobile

Abstract

A novel automobile gasoline refueling system, which includes a fuel tank and a carbon tank, wherein: a combined gravity valve is arranged in the fuel tank, and the combined gravity valve includes: a large flow gravity valve and a small flow gravity valve, and the small flow gravity The closing plane of the valve is higher than the closing plane of the high-flow gravity valve, and the high-flow gravity valve is connected to the fuel tank; and the flow channel for the carbon tank and the flow channel for refueling, and the flow channel for the carbon tank is connected to the flow channel for the fuel tank. The carbon tank is connected, the refueling channel is connected to the refueling pipe exhaust pipe, and the system is realized through the combined gravity valve to simultaneously realize the control of the refueling process and the evaporative emission control process through the combined gravity valve.

Description

technical field [0001] The invention relates to a novel automobile gasoline refueling system. Background technique [0002] The fuel system is composed of three functions, which are refueling function, fuel storage and supply function, and evaporative emission control function, which correspond to three functional systems, namely refueling system, fuel supply system, and evaporative emission control system; the three systems Many parts of the components are shared. [0003] The refueling system is mainly composed of refueling pipe, fuel tank, fuel tank cap and exhaust pipeline. The process is that when the user refuels, the fuel tank cap is opened to connect the refueling pipe and exhaust pipe to the atmosphere. The oil enters the fuel tank through the refueling pipe, and the fuel tank Moving air from the vent line out of the tank creates a balance for the refueling process. [0004] The evaporative emission control system is mainly composed of a fuel tank, a carbon tank a...

AI Technical Summary

Problems solved by technology

The adsorption process and desorption process ensure that gasoline will not pollute the environment and the carbon canister can be used repeatedly. However, since the amount of oil and gas molecules adsorbed by the carbon canister is different in different periods, the inhaled concentration cannot be confirmed, and the desorption process will be affected to a certain extent. affect the power of the engine

[0005] The disadvantage of the existing technology is: the gravity valve needs to be able to exhaust the gravity valve under the condition that the front, rear, left and right of the vehicle are tilted to the maximum, so as to ensure the stability of the pressure inside and outside the fuel tank

[0006] The amount of refueling in the existing scheme is determined by the immersion vent nozzle. Different refueling rates will add different amounts of oil, which may cause excessive refueling, which will reduce the expansion space of the fuel tank. The gravity valve is designed according to the designed rated volume. This will cause the gravity valve to be submerged in the oil and close when the vehicle is tilted, making it impossible to ventilate

And due to the limit value of the vent nozzle layout, its design is limited by the pipeline connected to it, and there are limitations in the design

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