Cylinder Pressure Analysis in High Performance Two-Stroke Engines

The performance of two-stroke, high specific output engines, is influenced considerably by the ignition timing curve. This paper describes the cylinder pressure analysis of a TZ250B Yamaha racing motorcycle engine. Cylinder pressure data was recorded for compression ratios of 7.8 and 9.0, for a range of engine speeds. The analysis of the cylinder pressure was carried out with computer software written in fortran 77 code.