Motor vehicle fuel evaporative pollutant control system
A technology for controlling systems and pollutants, applied in the direction of charging systems, machines/engines, and adding non-fuel substances to fuel, etc., can solve the problem of affecting the stability of vehicle idling, the increase of carburetor process costs, and engine work. Instability and other problems to achieve the effect of reducing impact, facilitating adjustment, and reducing emissions
Inactive Publication Date: 2009-09-23
CHONGQING LONCIN MOTOR
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Problems solved by technology
After desorption, the fuel vapor mixer is relatively thin. After the carburetor participates in the mixing, the concentration of the mixture gas entering the engine will be low. Such mixture gas participating in the combustion may make the engine idling unstable and cause the engine to work incorrectly. Stability, affecting the vehicle idle speed stability
Moreover, setting the fuel evaporation and desorption port on the carburetor will lead to an increase in the carburetor process and its cost, which is not conducive to reducing the production cost of the entire vehicle
Method used
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[0012] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0013] like figure 1 As shown, the carbon canister 15 adopts a canister with a storage volume of 200ml to ensure that it has sufficient adsorption capacity, and the mass of normally adsorbed fuel vapor is about 20 grams. The intake adsorption port 7 of the carbon canister 15 is connected to the fuel tank vent pipe 2 through the first pipeline 4, the gasoline cut-off valve 3 is installed on the first pipeline 4, and the pressure control valve 6 of the carbon canister 15 is connected to the gas tank through the second pipeline 8. The engine intake pipe 12 is connected, and the gas outlet and desorption port 5 of the carbon canister 15 is connected with the air filter 10 through the third pipeline 9 . The connection point between the third pipeline 9 and the air filter 10 is located on the air outlet pipe of the carburetor 14 and the air filter. The first pipe...
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The invention relates to a motor vehicle fuel evaporative pollutant control system comprising a carbon canister and a gasoline cut-off valve, an air inlet absorption port of the carbon canister is connected with an oil tank vent pipe by a first pipeline, the gasoline cut-off valve is arranged on the first pipeline, a pressure control valve of the carbon canister is connected with an air inlet pipe of a motor by a second pipeline, and an air outlet desorption port of the carbon canister is communicated with an air path of a carburetor by a third pipeline. The adoption of the technical proposal can not only reduce the emission of fuel evaporative pollutants, but also reduce the impacts of the fuel evaporative pollutants on the working condition emission and reduce the processing cost of the carburetor, thereby leading the exhaust emission of motor vehicles to achieve the requirement of being more environment-friendly.
Description
technical field [0001] The invention belongs to the technical field of motor vehicle pollutant emission control, and in particular relates to a fuel evaporation pollutant control system on a motor vehicle. Background technique [0002] Due to diurnal ventilation and heat soak loss, the fuel system of motor vehicles will produce fuel evaporation pollutants, which are hydrocarbons and cannot be directly discharged into the atmosphere. National standards for pollutant discharge limits. [0003] Existing motor vehicles are equipped with a carbon canister in the fuel system to adsorb fuel evaporation pollutants. The carbon canister is connected between the fuel tank and the carburetor, and the fuel evaporation pollutants discharged from the fuel tank enter the carbon canister for adsorption, and then enter the carburetor. The carburetor is mixed with air to form a mixture that enters the carburetor, and then enters the engine for combustion through the intake pipe. After desorp...
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Inventor 唐程李庆峰李国强李刚白汪洋高中华袁旭东
Owner CHONGQING LONCIN MOTOR