SI Engine carburator

spark ignition engine

                                     WATCH VEDIO HOW TO WORK SPARK IGNITION SYSTEM

A simple device for mixture preparation in a spark ignition engine (vaporizing carburetor) with the ability to provide the engine with a homogeneous and correctly proportioned combustible mixture for different operating conditions has been tested in this study. This carburetor works on the principle of adiabatic vaporization of liquid gasoline fuel before introduction into the engine cylinder. This vaporization is achieved by passing atmospheric air, induced by engine suction, through the fuel.

The performance and exhaust gas emissions of the engine were studied using different percentages of methanol–gasoline blends as well as pure gasoline, using both conventional and vaporizing carburetors. Results have shown that the vaporizing carburetor has numerous advantages over conventional carburetors. The advantages include improvement in fuel economy and exhaust emission, which can be attributed to the leaning out of the mixture that could be prepared by using the vaporizing carburetor. The vaporizing carburetor was found to be suitable for use with fuel blends. This is due to the high quality of mixture preparation and mixing of different fuels.