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http://dx.doi.org/10.14775/ksmpe.2019.18.6.069

Influence of Back Pressure of an Exhaust System on Quietness at Low-Speed Rotation  

Kang, Il-Seok (Department of Mechanical System Engineering, Chonbuk National University)
Yang, Sung-Mo (Department of Mechanical System Engineering, Chonbuk National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.18, no.6, 2019 , pp. 69-75 More about this Journal
Abstract
In recent years, the driving performance and exhaust sound quality in automobiles have been recognized as important factors, as they maximize the driving fun to fulfil the demands of customers. Therefore, many automobile manufacturers are studying various exhaust pipe shapes to improve sound quality and optimize exhaust pressure. The objective of the exhaust pipe design is to maximize the engine efficiency using optimal exhaust pressure settings. In this study, an exhaust system was fabricated with different junction shapes, and the results were analyzed through various experiments. The exhaust gas pressure acting inside the exhaust pipe was measured using a pressure transducer. Meanwhile, the vibration generated in the vehicle was measured in three axial directions and analyzed. The ground noise generated in the indoor and outdoor of the vehicle was measured, and the noise generated at the maximum output was measured and analyzed.
Keywords
Back Pressure; Exhaust Pipe; Vibration; Junction Chamber; Muffler;
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