Abnormal Combustion in Two-Stroke Motorcycle Engines

With increase in displacement per cylinder, 2-stroke engines, unstable engine revolution and abnormal cylinder noise due to abnormal combustion are frequently experienced. Solution of this abnormal combustion which has close relation with mixture strength becomes very important in connection with countermeasures against poisnous exhaust emission.

This report presents measureing and analysis of engine combustion pressure, studies in causes of abnormal combustion and effect of countermeasures against to this probrem.