similar sequence of events for a loop-scavenged engine. Proper How patterns for the fresh charge are extremely important for good scavenging and charging of the cylinder.<br> Common methods for supercharging or pressurizing the fresh charge are shown in Fig 6-26. In large two-stroke cycle engines, more complex com- binations of these approaches are often used, as shown in Fig. 1-24.<br> 6.6.2 Scavenging Parameters and Models<br>The following overall parameters are used to describe the scavenging process.'3<br>The delivery ratio A:
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