- Cross-flow scavenging
- Loop scavenging
Cross-flow scavenging
In cross-flow scavenging, a stream of air is directed from the intake port across the cylinder and out the exhaust port. This type of scavenging is often used in smaller engines, such as those found in lawnmowers and motorcycles.
Loop scavenging
In loop scavenging, a stream of air is directed from the intake port around the cylinder head and back down the cylinder before exiting through the exhaust port. This type of scavenging is often used in larger engines, such as those found in cars and trucks.
Each of these systems has its own advantages and disadvantages. For example, cross-flow scavenging is generally more efficient, while loop scavenging provides better cylinder filling at low engine speeds.
The type of scavenging system used in a two-cycle engine depends on the specific application and design requirements.
