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Harmful exhaust components and particles mass and number emission during the actual drive of a passenger car in accordance with the RDE procedure

Sokolnicka Barbara, Fuć Paweł, Szymlet Natalia, Siedlecki Maciej, Grzeszczyk Rafał

Combustion Engines

2019

R. 58, nr 3

198--202

The article presents toxic exhaust components emission measurement results as well as solid particles mass and number. The test involved a direct gasoline injection engine, in which special attention should be paid to the particulates number emission. Small diameters of nanoparticles make them particularly dangerous to human health. Nowadays, vehicle engines are constantly improved and modernized as a result of the need to meet existing exhaust gas emission standards. One of the few ways to determine the actual content of toxic and harmful compounds in the exhaust gases is the RDE (Real Driving Emissions) procedure, the requirements of which apply from 2016 for new vehicles, and from 2019 will apply to all registered passenger cars. The RDE procedure does not replace the WLTP (World Light-Duty Vehicle Test Procedure), but complements it. The tests on the dynamometer are separated from external conditions such as traffic volume or congestion and are not a sufficient indicator of emissions in real traffic conditions.

Challenges and solutions for modern gasoline engine applications

Friedl H., Fraidl G., Kapus P.

Silniki Spalinowe

2011

R. 50, nr 3

Future CO2 scenarios raise the need for a systematic view on the best fitting solution for the whole drivetrain. A wide range of different technical solutions are available to suit the individual demands. Out of this large variety, short-termed this may be a direct injected downsized turbocharged gasoline engine as one of the most promising solutions to be applied in large volume production. On the other extreme there may be an electric powertrain, considered to be more long-termed. For both approaches and for all solutions in between there are challenges which have to be overcome. This paper deals with specific challenges of named two powertrain applications and describes the technical solutions for it: - For the gasoline direct injected engine (GDI) the forthcoming EURO 6 emission standards, especially with respect to particulate number PN emissions, is considered to be a challenge. - For electric vehicles the limited operation range due to battery weight and cost is a hard trade-off which has to be matched. So called Range Extender RE units with combustion engines may be a solution for this. By systematical evaluation of potential solutions and by means of appropriate development tools and methodology the challenges for development of future leading powertrain can be overcome.