S0505-2-3 新幹線騒音低減技術の開発(車両・機体・流体機械に関連した騒音問題へのアプローチと対策(2))

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  • S0505-2-3 Development of Noise Reduction Techniques for Shinkansen High-speed Trains

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To increase the speed of Shinkansen trains, it becomes more important to reduce the noise generated from Shinkansen cars. We developed the high-speed test trains "FASTECH360" that have new equipment such as low-noise pantographs, pantograph noise insulation plates and sound-absorbing panels for the noise from the lower area of car bodies. We conducted running tests using "FASTECH360" from June of 2005 to June of 2009. As a result, the noise level of "FASTECH360S"(runs only on Shinkansen line) at the speed of 360km/h is reduced by more than 4 dB compared to that of series E2-1000, present commercial trains, at the speed of 360 km/h (at a distance of 25 m from the track). We also performed the noise analysis of "FASTECH360S" at 360 km/h. Consequently, we estimated that pantograph noise contribution to the overall noise level was reduced by about 7dB compared to that of E2-1000 at 360 km/h and contribution of noise from the lower part of cars to the overall noise level was reduced by about 1dB as well.

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