A plug-in hybrid electric vehicle on-board oil and gas recovery system and method

Abstract

The invention provides a vehicle-mounted oil and gas recovery system and method for a plug-in hybrid vehicle. The vehicle-mounted oil and gas recovery system includes a fuel tank, a carbon tank, and an oil-gas cooling circulation system connected to the fuel tank and the carbon tank. The oil-gas cooling circulation system includes a two-phase vortex tube, Elastic airbag and liquid collector; when the isolation valve of the oil tank is opened, the oil and gas enter the two-phase vortex tube for cooling and separation, and the low-temperature oil and gas enters the elastic airbag through the cold end of the two-phase vortex tube, and enters the oil tank after pressure relief, and the condensed liquid The fuel enters the liquid collector through the liquid separation shell, and enters the fuel tank after the pressure relief is completed. The high temperature oil gas enters the carbon tank through the hot end of the two-phase vortex tube for adsorption; Start the engine to desorb the canister. The invention can reduce the saturation degree of the carbon tank of the plug-in hybrid electric vehicle, reduce the number of starting the engine due to forced desorption of the carbon tank, and effectively reduce evaporative emission and refueling emission.

Description

technical field [0001] The invention belongs to the technical field of hybrid vehicles, and in particular relates to a vehicle-mounted oil gas recovery system and method for a plug-in hybrid vehicle. Background technique [0002] my country has a huge number of vehicles, most of which are gasoline vehicles, and environmental pollution problems such as smog and haze caused by vehicle exhaust emissions and evaporative emissions are becoming increasingly serious. In recent years, plug-in hybrid vehicles have developed rapidly, and compared with traditional gasoline vehicles, exhaust emissions have been greatly reduced. However, the problem of evaporative emissions from plug-in hybrid vehicles is still severe. If plug-in hybrid vehicles do not start for a long time, the oil and gas adsorbed in the carbon tank cannot be desorbed, resulting in a high degree of saturation of the carbon tank and the inability to absorb more oil and gas; refueling At this time, more oil and gas in t...

AI Technical Summary

Problems solved by technology

However, the problem of evaporative emissions from plug-in hybrid vehicles is still severe. If plug-in hybrid vehicles do not start for a long time, the oil and gas adsorbed in the carbon tank cannot be desorbed, resulting in a high degree of saturation of the carbon tank and the inability to absorb more oil and gas; refueling When the fuel tank breaks through the carbon tank, more oil and gas are discharged into the atmosphere, causing environmental pollution

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