What are Scavenging Parameters?

Delivery Ratio:

Ratio of volume of air delivered by scavenging to displacement volume. It is denoted by L. It can be mathematically expressed as-

L=Vdel/Vdisplacement

Sacvenging Efficiency:

Measure of the success is during the cycle of residual gases from the procedding cycle.

It is denoted by ns and mathematically expressed as a

ns=Vrea/Vch

=Vrea/(Vrea+Vrea)

Trapping Efficiency:

ns=Vrea/Vdu

Relative cylinder Charge:

Ratio of (air retained +residual gas) to displacement volume. It is mathematically expressed as a

Crcl=(Vret+Vres)/ Vdisplacement

=Vcharge/Vdisplacement

Excess air factor:

Excess air factro=( Crcl - 1 )

Charging efficiency:

ncr=Vrct/Vdisplacement

Comments

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