Integral cavity division partition plate and carbon tank thereof

Abstract

The invention relates to an integral cavity division partition plate and a carbon tank thereof. The integral cavity division partition plate comprises an upper supporting plate, a lower supporting plate and a plurality of reinforcing rib plates, wherein both ends of the reinforcing rib plates are connected with the upper supporting plate and the lower supporting plate correspondingly, and the plurality of reinforcing rib plates are integrally formed with the upper supporting plate and the lower supporting plate. The integral cavity division partition plate is reasonable in structure and simplein the assembly process, and can effectively improve the utilization rate of carbon powder, and reduce the quantity of HC emission.

Description

technical field [0001] The invention belongs to the field of fuel evaporation control systems, and in particular relates to an integral sub-chamber partition and a carbon tank thereof. Background technique [0002] Gasoline used in automobiles is very easy to volatilize into the atmosphere. To solve this problem, countries around the world have introduced environmental regulations to limit the amount of gasoline vapor emitted into the atmosphere. At this stage, the United States and China have introduced emission regulations to control the amount of gasoline vapor emitted when refueling vehicles. In order to meet this requirement, the volume of carbon tanks generally designed has increased by 1.5 to 2.5 times, which requires a larger reserve for the carbon tank. design space. One state is that the length-to-diameter ratio of the canister design will be greater than 5.6 due to the design space limit. If the carbon powder is directly filled in the space with the length-to-dia...

AI Technical Summary

Problems solved by technology

One state is that the length-to-diameter ratio of the canister design will be greater than 5.6 due to the design space limit. If the carbon powder is directly filled in the space with the length-to-diameter ratio greater than 5.6, the utilization efficiency of the carbon powder will decrease, and even 2DBL will be caused. HC emissions exceeded the limit requirements during the test

Another situation is that the same chamber needs to be filled with two different types of activated carbon powder. If the chamber is not divided, different activated carbon powders are easily mixed together, and the design purpose of different HC concentration differences cannot be achieved, which will cause 2DBL test. HC emissions exceed limit requirements

[0003] The Chinese patent with the application number 201721768801.8 discloses an isolation structure for separating two kinds of carbon powder, which includes an upper isolation sheet and a lower isolation sheet, and the upper isolation sheet and the lower isolation sheet are fastened and connected. This connection method not only increases In order to avoid the tediousness of the canister assembly process, the unsupported structure in the middle will make the connection structure of the whole device relatively fragile, prone to the risk of deformation or breakage

Carefully observe the appended figure 1 It can be found that the gap structure of the upper spacer and the lower spacer is a plurality of concentric ring gaps. When the airflow passes through the isolation structure, the cooling effect of the carbon powder is not obvious, and there is no substantial impact on the adsorption / desorption efficiency.

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