2 Stroke Expansion Chamber Explained how 2 Stroke Exhausts make More Power!

In this Video I look at the pressure waves generated in an exhaust pipe on a two stroke engine. I try 3 types of pipe: A 4 stoke pipe, a diffuser only pipe and then a traditional 2 stroke expansion pipe. After simulating each pipe I then look at the finite amplitude pressure waves inside each pipe. There is the Right pressure wave and the Left pressure wave and the sum of these two waves which is the Superposition wave. I also look at compression waves and expansion waves as shown in Prof. Gordon Blair's book: Design and Simulation of Two-Stroke Engines.
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1:24 - WaveViewer2T (Movie2T) overview - Right waves and Left waves and the Superposition wave
3:43 - Compression and Expansion pressure wave explanation
6:24 - EngMod2T simulation
7:06 - The 4 stroke pipe, a diffuser only pipe and the 2 stroke expansion pipe
7:14 - 4 Stroke pipe - WaveViewer2T wave results
8:14 - Diffuser only pipe - WaveViewer2T wave results
9:22 - Expansion pipe - WaveViewer2T wave results
10:35 - The results of the test displayed in the power output graph
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