Novel carbon tank structure meeting requirements of complex vehicle body

Abstract

A novel carbon tank structure meeting a complex vehicle body comprises a shell, a bottom cover, an adsorption opening structure, an atmosphere outlet structure and a leakage diagnosis module. A first cavity, a second cavity, a third cavity, a fourth cavity and a flow channel are arranged in the shell side by side. In the using process of an automobile, oil steam in the fuel tank is discharged through the air outlet of the fuel tank, enters the shell along the adsorption opening structure to be subjected to hydrocarbon adsorption treatment and then is discharged from the atmosphere outlet structure, and the leakage diagnosis module monitors the pressure of the shell in real time, so that the situations of leakage and the like are found in time. The first cavity, the second cavity, the third cavity and the fourth cavity are formed in the shell, the first cavity, the second cavity and the third cavity are filled with the carbon powder, compared with a traditional automobile carbon tank with two cavities, oil vapor flows through the carbon powder in the first cavity, the second cavity and the third cavity, the path length of the carbon powder is lengthened, and therefore the carbon powder in the first cavity, the second cavity and the third cavity is more uniform. And the oil steam can be fully adsorbed by the carbon powder.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a novel carbon canister structure that satisfies complex vehicle bodies. Background technique [0002] The vehicle carbon canister structure is used as the exhaust passage of the fuel system, and its main function is to absorb the fuel vapor generated by volatilization in the fuel system, so as to prevent the vehicle's hydrocarbon emissions from exceeding the standard. [0003] Moreover, after the carbon canister absorbs oil vapor, the engine will perform negative pressure extraction on the carbon canister during operation, so that the adsorbed hydrocarbons are reused by the engine again, and the carbon powder in the carbon canister can be continuously used. [0004] At present, the carbon canister structure used in the market has the following shortcomings: 1) The traditional automobile carbon canister structure is generally a two-chamber carbon powder cavity, and the oil vapor flows ...

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Problems solved by technology

[0004] At present, the carbon tank structure used in the market has the following shortcomings: 1) The traditional car carbon tank structure is generally a two-cavity carbon powder cavity, and the oil vapor flows through a short path. In the process, oil vapor is difficult to be fully absorbed by the carbon powder, and it is easy to overflow into the atmosphere and cause excessive emissions; 2) The layout of the carbon tank structure on the vehicle is generally more flexible. The location of the carbon tank structure will be given priority. Therefore, in many cases, the body boundary of the carbon tank structure is relatively strict, such as being arranged on the side of the fuel tank or in the wheelhouse close to the fuel pipe, etc., which greatly increases The difficulty of disassembling and assembling the carbon canister structure

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