Three Korea test sites and four Europe test sites are selected. The pass by noise test is done according to a 2001/43/EC regulation. Although the ISO surface has a very specific track composition, it does not reduce the variation of pass by noise measurements over the surface of test ...
Pass-by noise testing as certification has been a very important test for a while now, as it can keep automotive manufacturers from selling their new models on the market. For years, regulations have been adapted to better reflect the average usage of a vehicle in urban areas. To protect pu...
Three Korea test sites and four Europe test sites are selected. The pass by noise test is done according to a 2001/43/EC regulation. Although the ISO surface has a very specific track composition, it does not reduce the variation of pass by noise measurements over the surface of test ...
Pass-by Noise Testing System Product Datasheet We offer complete pass-by (drive-by) noise testing systems suitable for both cars and motorcycles. The systems are based around a compact, customised Peli case that mounts on/in the vehicle and a trackside PC and sound meters. With a wireless ...
One specific domain of the NVH behavior is the acoustic and in this case the noise emitted by the accelerating road vehicle. In this contribution there are two important aspects. The first are the requirements on the measurement environment "acoustic roller test bench". This article is a short...
pass-by Pass-ByNoise 1 Pass-ByNoise Twoby-productsfromvehicle:•Pollution:CO,NOx,NMOG,•Noise WhyPass-ByNoise?•Customersconcernnoisepollution•Governmentsregulatethenoisestandard •1stgovernmentforpass-bynoisehappenedinRomePeriod•1964:ISOR362 2 EEC(EuropeEconomicCommittee)Standards 1970:82dB...
test teams mask on the vehicle prototype one particular source, for example an extensive muffler/silencer is applied on the exhaust. By subtracting the corresponding noise levels from the original configuration without masking, they can calculate the contribution of the exhaust to the overall n...
Pass-by Noise is one of these aspects in order to improve noise vehicle as a whole. As a result, this paper will show opportunities that Pass-by Noise test can get in a new development of Commercial Vehicles, presenting the methodology, NVH improvements, Quiet Truck and Frequency Analysis ...
The indoor simulated pass-by noise measurement system is the measurement tool to evaluate the pass-by noise at the test laboratory, without doing measurement at the field. This measurement system can overcome the limitations of the field... Y Ryu - 《Proc of the Icsv》 被引量: 4发表: 2005...
The moving frame acoustic holography was improved to visualize the pass-by noise and predict its level. The proposed method allowed us to visualize tire and engine noise generated by pass-by test based on the following assumption; the noise can be assumed to be quasistationary. This is first ...