A experimental test on 2-stroke spark ignition engine with gasoline and methanol-gasoline blends using brass coated piston

The Experiment was conducted on single cylinder two – stroke spark-ignition engine. Make it lesser time in chemical delay in combustion process the catalyst material such as brass was coated on piston crown with 300 µm thickness. The coated piston was tested with pure gasoline and gasoline-methanol blends and compared performance and emission characteristics between conventional piston and brass coated piston in trail- I. With pure gasoline coated piston given better results than a conventional piston engine. The improvement of results the test was conducted with methanol blends in the % volume 10%, 20%, and 30% named as M10, M20, and M30 in the trail-II. Out of three different blends with M20 (20% of methanol and 80% of gasoline) given a better reduction in exhaust emissions like hydrocarbons (HC), carbon monoxide (CO), carbon dioxide (CO2) and NOx. Pure gasoline with brass coated piston enhanced performance results such as brake thermal efficiency, specific fuel consumption, and mechanical efficiencies upon conventional two stroke spark-ignition engine. Observing trail -II results with blends on coated piston 20% volume (M20) given optimum values more than that it is noticed poor performance and emissions characteristics on brass coated piston.