mechanical efficiency
volumetric efficiency
isothermal efficiency
adiabatic efficiency
compression index
compression ratio
compressor efficiency
mean effective pressure
as large as possible
as small as possible
about 50% of swept volume
about 100% of swept volume
gauge discharge pressure to the gauge intake pressure
absolute discharge pressure to the ab-solute intake pressure
pressures at discharge and suction cor-responding to same temperature
stroke volume and clearance volume
to accommodate Valves in the cylinder head
to provide cushioning effect
to attain high volumetric efficiency
to provide cushioning effect and also to avoid mechanical bang of piston with cylinder head.