Combustion and Exhaust Emission Improvement in a 3-Cylinder Mpfi Engine Through Downsizing

This research aims to compare the potential and existing conditions of a small-sized spark ignition (SI) engine with 1.0-liter capacity suitable for cylinder deactivation. The deactivation strategy is used solve issues inefficient combustion increased exhaust emission under part loading. Consequently, possibility implementing in terms decreased pollution has been assessed. A computerized, 1.0-liter, 4-stroke, water-cooled, spark-ignition an open control unit (ECU) multi-point fuel injection (MPFI) was trials. Both modes were tested at 2500 revolutions per minute (RPM) loads 15, 30, 45 N-m. plug injector deactivate cylinder. results show that when highest possible load used, peak pressure 55.78% higher, maximum heat release rate 53.96% more mode than traditional mode. In mode, mass fraction consumed larger each crank angle point, suggesting faster efficiency. mean gas temperature permits catalytic converter perform efficiently after downsizing. When compared conventional carbon monoxide (CO) almost non-existent full load, unburned hydrocarbon (UHC) reduced by 92.89%, oxides nitrogen (NOx) are 35% Furthermore, experiment indicated that, employed beneficial standard better stability lesser emissions.