Browse Publications Technical Papers 750859
1975-02-01

An Experimental Investigation of Two-Stroke Internal Combustion Engine Performance 750859

The relation between the power and the pressure-time history at the exhaust port of a high performance two-stroke engine is explored. Through the use of a variable length expansion chamber with five different tailpipes, the effect on power of stuffing pulse arrival time, magnitude and duration was found. The results from this set of tests are compared with those of two side exit expansion chambers and an inverted tailpipe expansion chamber.
Tests were also made to determine how mid-range torque and high speed torque effect of the performance of the motorcycle. An optimum configuration (pipe length and tail pipe length) was found for the 360 Yamaha tested.

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