DESIGN AND CONSTRUCTION OF A MUFFLER （消声器的设计和施工）.pdfVIP

Proceedings of the International Conference on Mechanical Engineering 2005 (ICME2005) 28- 30 December 2005, Dhaka, Bangladesh ICME05-TH-47 DESIGN AND CONSTRUCTION OF A MUFFLER FOR ENGINE EXHAUST NOISE REDUCTION M. Rahman, T. Sharmin, A F M E. Hassan, and M. Al Nur Department of Mechanical Engineering Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh ABSTRACT An inherent drawback of IC engines is that it is a major source of noise pollution. That is why the reduction of exhaust noise from engines is, now-a-days, an important issue. Attaching a muffler in the exhaust pipe is the most effective means of reducing noise. But muffler requires specific design and construction considering various noise parameters produced by the engine. In our country, the conventional design does not include much of a parametric noise analysis or other engine characteristics. A muffler for stationary petrol engine has been designed and manufactured. The performance characteristics, i.e. noise reduction capability of the muffler, has been tested and compared with that of the conventional muffler. The result has been found to be quit satisfactory. Keywords: Muffler, Engine exhaust noise reduction, Design 1. INTRODUCTION experimenting with electronic noise suppressi