Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Influence of Back Pressure of an Exhaust System on Quietness at Low-Speed Rotation

저속 회전 시 배기시스템의 배압이 정숙성에 미치는 영향

  • Kang, Il-Seok (Department of Mechanical System Engineering, Chonbuk National University) ;
  • Yang, Sung-Mo (Department of Mechanical System Engineering, Chonbuk National University)
  • 강일석 (전북대학교 기계시스템공학과) ;
  • 양성모 (전북대학교 기계시스템공학과)
  • Received : 2019.05.20
  • Accepted : 2019.05.28
  • Published : 2019.06.30
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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.

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References

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