The control system of evaporative emissions including a box of charcoal for small internal combustion engines

摘要

"System of control of evaporative emissions including a box of charcoal for small internal combustion engines.The present invention relates to a control system of evaporative emissions for small internal combustion engines.Including a box of charcoal that is in fluid communication with the air space above the liquid fuel within the carburetor of the engine, and the air space above the liquid fuel ifThe fuel tank of the engine.The box contains charcoal charcoal media, and when the engine is not operating, the fuel vapor from the carburetor and the fuel tank migrate to, and are caught in.The means of charcoal of charcoal box.The box of charcoal may comprise a separate component, or may be integrally formed with a component of the engine such as the air purifier, the carburetor.Or the body of the fuel tank, for example.During operation of the engine.The vacuum in the carburetor induces a flow of atmospheric air through the charcoal box to purge the fuel vapor collected by means of charcoal.And the fuel vapors pass into the engine for consumption.In another method, a control system of evaporative emissions including a box of charcoal is supplied to an engine that includes a fuel injection system.