What are the two types of scavenging systems used in two-cycle engines?

The two types of scavenging systems used in two-cycle engines are cross-flow and loop scavenging. In cross-flow scavenging, the fresh charge enters the engine from one side and exits through the opposite side, promoting efficient exhaust removal. Loop scavenging, on the other hand, directs the fresh charge in a circular motion around the combustion chamber, helping to minimize the loss of fresh fuel during exhaust. Both systems aim to enhance engine efficiency and performance by optimizing the intake and exhaust processes.