it is properly designed

best quality fuel is used

can not work as it is impossible

flywheel size is proper

1 valve

2 valves

3 valves

4 valves

uniform throughout the mixture

chemically correct mixture

about 3-5% rich mixture

about 10% rich mixture

instantaneous and rapid burning of the first part of the charge

instantaneous atuo iginition of last part of charge

delayed burning of the first part of the charge

reduction of delay period

controlling valve opening/closing

governing

injection

carburettion