Power and Exhaust

Combustion occurs (Fig. 3) soon after the intake charge enters the power cylinder from the crossover passage. This means that the start of combustion occurs after the power cylinder passes through its top dead center position (ATC).

Figure 3 - Start of Combustion

The resulting combustion drives the power cylinder down (Fig. 4).

Figure 4 - Power Stroke

Exhaust gases are than pumped out of the power cylinder through a poppet valve (Fig. 5) to start the cycle over again.

Figure 5 - Exhaust Stroke

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