The volumetric efficiency of a well designed S.I. engine is in the range of
Option (A)
40% – 50%
Option (B)
50% – 60%
60% – 70%
70% – 90%
Correct Option:
Question Solution:
The normal range of volumetric efficiency at full throttle for SI engine is between 80 to 85% where as for CI engines it is between 85 to 90%. Gas engine have much lower volumetric efficiency since gaseous fuel displaces air and therefore the breathing capacity of the engine is reduced.