Evaluation of Passenger Car Noise Nuisance in Urban Traffic 801432

The present paper reports the urban driving statistical survey achieved by CCMC on a twenty three passenger car sample, driven in four European towns. Statistics of engine speed as well as statistics of power utilized have been worked out and related to mechanical characteristics of the vehicles.
From these preliminary works, CCMC has derived the engine speeds and loads which define, at best, the noisiness of the different passenger cars. These engine speeds and loads should be used during certification tests in order to get a better evaluation of their noise nuisance.
These works have been used as a basis for the drafting of various practical procedures. One of them has been elaborated in the 8th working group of SCI TC 43 of ISO and is now proposed as an international standard.


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