TY - GEN
T1 - Measurement of sound power level of electric vehicles in steady low speed travelling
AU - Yamauchi, Katsuya
AU - Yabuno, Moe
N1 - Funding Information:
The authors would like to thank Kamikaze Tanaka for his efforts and expertize in the measurements. This work was supported by the Japanese Society for the Promotion of Science (JSPS), Grant-in-Aid for Scientific Research (B), Grant Number 16H03021.
Funding Information:
The authors would like to thank Kamikaze Tanaka for his efforts and expertize in the measurements. This work was supported by the Japanese Society for the Promotion of Science S(PSJ), Grant-in-Aid for Scientific Research (B), Grant uNbemr 1063H. 021
PY - 2019
Y1 - 2019
N2 - The vehicles that are propelled by electric motors are becoming popular, and the number of production is rapidly increasing recently. While the electric and hybrid electric vehicles (EV, HEV) has major population in such vehicle, fuel cell vehicles (FCV) are also introduced in the family. The propulsion noise of such vehicles are lower than conventional internal combustion engine vehicles (ICEV), particularly at low speeds. It is a keen interest to examine the noise reduction effect of such vehicles. In order to introduce EVs into the noise prediction models, such as ASJ RTN-Model or CNOSSOS-EU, it is necessary to know the sound power level emitted by an electric vehicle and to develop a model of sound power level depending on the vehicle speed. In this research, several measurements on sound power level were carried out on a dense asphalt pavement. The result showed that the sound power level of test EVs in 20 to 30 km/h speed range were 2 to 4 dB lower than the ICEV. Additionally, the comparison of the frequency analysis was conducted to evaluate the effect of Acoustic Vehicle Alerting System (AVAS) to improve the auditory detectability by pedestrians.
AB - The vehicles that are propelled by electric motors are becoming popular, and the number of production is rapidly increasing recently. While the electric and hybrid electric vehicles (EV, HEV) has major population in such vehicle, fuel cell vehicles (FCV) are also introduced in the family. The propulsion noise of such vehicles are lower than conventional internal combustion engine vehicles (ICEV), particularly at low speeds. It is a keen interest to examine the noise reduction effect of such vehicles. In order to introduce EVs into the noise prediction models, such as ASJ RTN-Model or CNOSSOS-EU, it is necessary to know the sound power level emitted by an electric vehicle and to develop a model of sound power level depending on the vehicle speed. In this research, several measurements on sound power level were carried out on a dense asphalt pavement. The result showed that the sound power level of test EVs in 20 to 30 km/h speed range were 2 to 4 dB lower than the ICEV. Additionally, the comparison of the frequency analysis was conducted to evaluate the effect of Acoustic Vehicle Alerting System (AVAS) to improve the auditory detectability by pedestrians.
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M3 - Conference contribution
AN - SCOPUS:85084163622
T3 - INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering
BT - INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering
A2 - Calvo-Manzano, Antonio
A2 - Delgado, Ana
A2 - Perez-Lopez, Antonio
A2 - Santiago, Jose Salvador
PB - SOCIEDAD ESPANOLA DE ACUSTICA - Spanish Acoustical Society, SEA
T2 - 48th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2019 MADRID
Y2 - 16 June 2019 through 19 June 2019
ER -