Measurement of noise from electrical vehicles and internal combustion engine vehicles under urban driving conditions
Danish Road Directorate
Wednesday 3 june, 2015, 10:40 - 11:00
0.2 Berlin (90)
As part of the electormobility+ project COMPETT controlled pass by (CPB) noise measurement where carried out in 2014. This was done in order to investigate differences in pass by noise from electrical vehicles (EV) and internal combustion engine vehicles (ICE) under urban driving conditions. The measurements where done on two EVís and two similar ICEís. The measurements were done with an electrical and an ordinary CitroŽn Berlingo and a Nissan Leaf and a VW Golf Variant. The CitroŽnís and the Nissan was lent by the dealer while the VW is one of the cars in the fleet of the Danish Road Directorate. The tires on the electrical Berlingo were Michelin Agiglis the other cars were supplied with Michelin Energy saver. The urban driving conditions investigated was steady driving at 10, 20, 30, 40, 50 and 60 km/h, deceleration by engine breaking from 60, 50, 40, 30 and 20 km/h and acceleration at various degrees. These measurements should make it possible to investigate the noise levels from EVís and ICEís at diving conditions such as: coming up to and going away from a crossing, diving along at steady state in parking lots, on open streets and in streets with low speed restriction etc. The study shows that at low speeds in decelerating by engine breaking and steady driving the Evís emits about 5 dB less noise than ICEís, but at speeds above 30 km/h the noise levels from EVís and similar ICEís are similar as well.
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