Oil storage structure for preventing oil from entering carbon canister

Abstract

The invention relates to an oil storage structure for preventing oil from entering a carbon canister. The oil storage structure comprises an oil tank and the carbon canister connected with the oil tank, and is characterized in that an oil storage box is arranged between the oil tank and the carbon canister; an oil outlet on the oil storage box is higher than an oil inlet on the oil storage box; and the whole body of the oil storage box is of a wedge shape. The oil storage structure provided by the invention can realize the effect of storing liquid-state gasoline and the liquid-state gasoline cannot enter the carbon canister, so that the carbon canister is prevented from losing efficiency; the oil storage box has an enough oil storage space; the liquid-state gasoline is stored in one side,close to the oil inlet, in the oil storage box, so that the liquid-state gasoline is effectively prevented from entering the carbon canister; gasoline steam can freely pass and the flow speed of the gasoline steam is effectively reduced; and when the oil storage box is jolted along a vehicle, the liquid-state gasoline can be effectively stopped in a region, close to the oil inlet, of the oil storage box, so that a condition that the liquid-state gasoline in the oil storage box flows into the region close to the oil outlet due to shaking is avoided.

Description

technical field [0001] The invention relates to an automobile fuel supply system, in particular to an oil storage structure for preventing oil from entering a carbon tank. Background technique [0002] In order to reduce the emission and fuel consumption of automobiles and meet the national standards for evaporative emission of automobile fuel, a carbon canister is arranged between the gasoline tank and the engine, such as figure 1 As shown, the vent valve of the crude oil tank 1 communicates with the air inlet of the original carbon tank 2 through the original connecting pipe 3, and the gasoline vapor in the crude oil tank 1 enters the original carbon tank 2 through the original connecting pipe 3. The canister can store gasoline vapor in the fuel tank; however, liquid gasoline cannot enter the canister. Once liquid gasoline enters the canister, it will cause the canister to fail and affect the evaporative emission of the vehicle. In some models, the carbon canister is arra...

AI Technical Summary

Problems solved by technology

However, some models are limited by the space layout, and the top of the fuel tank cannot be equipped with a canister, so the canister has to be placed on the lower floor of the vehicle body. During the shaking, the gasoline in the fuel tank will sway a lot, and a small amount of liquid gasoline will enter the canister through the vent valve during the sloshing process, causing the canister to fail.

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