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Reduction of Disagreeable Idle Sound in Two-Stroke Engines
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English
Abstract
A periodic impulsive sound at idle is occasionally described as ‘disagreeable’ in two-stroke engines. The relation between combustion conditions, piston vibrations, and the disagreeable sound is analyzed to clarify the phenomena. Some means to alleviate disagreeable sound are then proposed through stabilized combustion, high rigidity sound transfer systems, and refined skirt profiles. Experimental results are shown for the effects on main three factors evaluating disagreeable sound-loudness, impulsiveness, and frequency characteristics. In addition, piston behavior is measured, and the relation between piston motion and disagreeable sound is discussed in this paper.
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Citation
Gotoh, T. and Maeda, O., "Reduction of Disagreeable Idle Sound in Two-Stroke Engines," SAE Technical Paper 930981, 1993, https://doi.org/10.4271/930981.Also In
References
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