Development of Ch4−, N2O−, CO−, HCFC’s−, Voc−, NOx− Emissions from Passenger Cars in the Federal Republic of Germany from 1970 to 2010

Abstract

On the basis of the development of the number of passenger cars divided into different combustion and emission class types, into three displacement classes and in to 20 registration years, the relevant mileage on three types of streets - city streets, rural roads and highways — is derived and multiplied by partly measured and partly estimated relevant emission factors for each type of car and street. So it is possible to give a first estimate of the development of the emission of non-CO2-greenhouse-gases. For CFC and HCFC an approach of the development of the possible release into the atmosphere is given too. As an overall result the emissions in the future are going down significantly with the exception of N2O, due to the further penetration of the closed loop three way catalytic converter technology into the passenger car fleet. The reliability - especially of emission factors - is discussed and improvements for these fields with poor data quality is recommended.