217 A STUDY ON NOISE-GENERATION CHARACTERISTICS OF 4-CYLINDER DIESEL ENGINE USING SINGLE EXPLOSION EXCITATION(O.S.3 Noise and Sound Control I)

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概要

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• Mechanism of combustion-noise generation was investigated for the reduction of engine noise in diesel engines. In order to clarify characteristics of noise generation induced by the combustion impact in each cylinder, a multi-cylinder diesel engine was tested in the present study. A transient noise-generation model was introduced for multi-cylinder engine considering accumulation and damping of vibration energy in engine structure. Transient characteristics of combustion noise were investigated through the model. Damping coefficient and transmission radiation coefficient for the combustion impact in each cylinder was experimentally obtained. In consequence, each cylinder had its own characteristics of combustion-noise generation. Transient noise-generation model was verified for a multi-cylinder engine.

• 一般社団法人日本機械学会の論文
• 2005-05-31

著者

• KOJIMA Naoya

  Department of Applied Biochemistry, Tokai University

• Kojima Naoya

  Department Of Mechanical Engineering Yamaguchi University

• Kojima Naoya

  Department Of Applied Biochemistry Institute Of Glycotechnology Tokai University

• Mikami Masato

  Department of Cardiology, Sendai City Hospital

• MORIUE Osamu

  Department of Mechanical Engineering, Yamaguchi University

• Moriue Osamu

  Department Of Aeronautics And Astronautics University Of Tokyo : (current Address) Zarm Applied Spac

• Moriue Osamu

  Department Of Mechanical Engineering Science Kyushu University

• SERA Keita

  Department of Mechanical Engineering, Yamaguchi University

• Mikami Masato

  Department Of Cardiology Sendai City Hospital

• Mikami Masato

  Department Of Mechanical Engineering Yamaguchi University

• Sera Keita

  Department Of Mechanical Engineering Yamaguchi University

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