A carbon canister cut-off valve suitable for automobile fuel evaporative emission system

Abstract

The invention discloses a carbon tank stop valve suitable for an automobile fuel evaporation and emission system. The carbon tank stop valve comprises a valve body, a valve cover, a base and a valve plate, wherein the valve body is of a cylindrical structure, a valve cavity is hollow in the valve body, and the valve plate is arranged in the valve cavity, the valve cover and the base are respectively arranged at two ends of the valve body, an air inlet pipe and an air outlet pipe are arranged on the valve cover, the air inlet pipe communicates with a carbon tank, the air outlet pipe communicates with a combustion chamber of an engine, a rotating rod is arranged on the valve cover, the valve plate is fixed on a rotating rod, internal threads are arranged on the valve cover, external threadsare arranged on the valve body, the valve cover and the valve body are mutually matched through threads, the base is of an annular structure, an annular inner groove of the base is matched with the valve body and is fixedly welded at the bottom of the valve body, a fixing screw is arranged on the base, the rotating rod is mounted on a rotating shaft of a driving motor, and the driving motor is connected with a controller. According to the carbon tank stop valve, the air inlet pipe and the air outlet pipe are opened and closed through rotation of the valve plate, and oil and gas in and out of the carbon tank can be effectively controlled.

Description

technical field [0001] The invention relates to the technical field of automobile oil and gas emission, in particular to a carbon tank cut-off valve suitable for an automobile fuel evaporation emission system. Background technique [0002] From the perspective of saving fuel and protecting the environment, people set up a carbon canister, which is filled with activated carbon with strong adsorption. The excess fuel vapor in the fuel tank is no longer discharged into the atmosphere, but a pipe is introduced to activate Canister. Activated carbon absorbs fuel vapor. When the car is running, the shut-off valve of the activated carbon tank is opened in good time, and the absorbed fuel vapor is re-injected into the intake manifold to achieve the purpose of saving fuel and environmental protection. [0003] In actual use, the canister shut-off valve has only two states, closed or open, and cannot control the flow of the canister, causing inconvenience to use. Contents of the in...

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Problems solved by technology

[0003] In actual use, the carbon canister shut-off valve has only two states, closed or open, and cannot control the flow of the carbon canister, causing inconvenience to use

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