Cross and loop scavenging Disadvantage

Cross scavenging Disadvantage

1. It requires longer  piston skirt to prevent exhaust gas and air leaks from the ports when piston is at TDC .

Loop scavenging Disadvantage

1. Both exhaust port and scavenge port are at the adjacent side of the liner which causes temperature differential problem for the liner material .

Hence , we are using mostly the uniflow scavenging which is having very lesser mixing and better scavenging efficiency.

Source : DA Taylor