Total views : 1076

Design and Optimization of Critical Parameters of a Muffler for Noise Reduction

Affiliations

  • School of Mechanical and Building Sciences (SMBS), VIT University, Chennai Campus, Chennai – 600127, Tamil Nadu, India
  • Department of Automobile Engineering, Karpaga Vinayaga College of Engineering and Technology, Chennai - 600024, Tamil Nadu, India

Abstract


Objective: The main aim of this paper is redesigning Muffler internal layout to improve the attenuation based on the critical parameters. Analyzing the baseline muffler design, the area of improvement is identified as frequency range of 250Hz–800Hz. Methods: By keeping t h e volume of muffler constant and varying the critical parameters such as perforation size, length of perforations on the pipe, length of intermediate pipes and the position of baffles thirty iterations were performed. Finding: The exhaust gas flow path was modified in the new concept for better attenuation. Second and fourth chambers were made as expansion chambers. First and third chambers were made as Helmholtz chambers. With this basic flow path, further fine tuning was done by varying the critical parameters. Applications: With this current design and optimistic characteristic, the candidate’s muffler design can be used as noise reduction muffler in automobile industries.

Keywords

Acoustics, Muffler, Sensitivity Analysis, Transmission Loss.

Full Text:

 |  (PDF views: 318)

References


  • Munjal ML. Acoustics of ducts and Mufflers with Applications to Exhaust and Ventilation System Design, 1st(edn). Wiley-Inter science: US. 1987; 1–328.
  • Potente P, Daniel D. General Design Principles for an Automotive Muffler. Proceedings of acoustics Australian Acoustical Society, Western Australia. 2005; 1–6.
  • Sherekar V, Dhamangaonkar PR. Design Principles for an Automotive Muffler. International Jou r na l of Appl i e d Engineering Research. 2014; 9(4):483–89.
  • Rahman M, Sharmin T, Hassan AFE, Al Nur M. Design and Construction of a Muffler for Engine Exhaust Noise Reduction. Proceedings of the International Conference on Mechanical Engineering. Dhaka, Bangladesh. 2005; 11(3):85–91.
  • Vaidya PPV, Hujare H. Optimization of Sound Pressure Level of Air Intake System by using GT-Power. International Journal of Emerging Science and Engineering.2014; 2(8):9–11.
  • Tao Z, Seybert AF. A Review of Current Techniques for Measuring Muffler Transmission Loss. Society of Automotive Engineers. 2003; 1–5.
  • Kim KS, Choi DS. Study on Vibration Characteristics through Torsion Spring Constants within Automobile Muffler. Indian Journal of Science and Technology. 2015 Jan 1; 8(S1):210–5.
  • Pal S, Golan TS, Kumar V, Jain V, Ramdas N, Sharma OP.Design of a Muffler and Effect of Resonator length for 3 Cylinder SI Engine. IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE). 2014; 11(3):1–7.
  • Allam S. Numerical Assessment and Shape Optimization of Dissipative Muffler and Its Effecton I.C. Engine Acoustic Performance, American Journal of Vehicle Des. 2014; 2(1):22–31.
  • Pujari NV, Mahajan SR, Mohite YB. Optimization of Silencer- An Integrated Approach of Acoustic Performances and Back pressure. International Journal of Emerging Science and Engineering. 2013; 3(22):1–3.
  • Shah S, Sasisankaranarayana K, Kalyankumar S, Hatti H, Thombare DG. A Practical Approach towards Muffler Design, Development and Prototype Validation, SAE International. 2010; 1 – 1 1 .
  • Gopan MB, Annamalai K. Optimizing the Back Pressure of 4 Stroke Engine by using Baffle Plates in Tail Pipe. Indian Journal of Science and Technology. 2015 Nov; 8(31):1–6.
  • Lou H, Tse C, Chen YNC. Modeling and Applications of Partially Perforated Intruding Tube Mufflers. Applied Acoustics. 1995; 44(4):99–116.

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.