Particle emissions from Euro 6 diesel cars during real world driving conditions

CO, NOx, HC and Particle mass have been monitored in different vehicle emission standards and Particle number (PN) has been added to standards recently. The EU has proposed a solid particle PN limit in Euro 5b and Euro 6. The PN limit for low duty vehicles (LDVs) is set to be 6.0 × 1011 (#/km). Within the recent decades of the European Union, there has been an overall reduction in emissions of air pollutants. It can however be reported that emissions of diesel engines that are measured within laboratory conditions are different from what is happening in real world driving condition. To combat this issue, a more realistic measurement method called Portable Emission Measurement System (PEMS) is recommended. There are very low amounts of real world emission data from PEMS for passenger cars [1]. Also, the available reports mostly concentrated on gaseous emissions such as NOx [2] and particle emissions from diesel passenger cars in real world is rarely studied. The aim of this research is to study particle numbers from diesel vehicles during the real world driving and compare it with recently introduced Euro 6 particle number limit. SAS regression tool was utilised to present trends within the vehicle speed and the particle number, while presenting interesting data on vehicle operation habits for speed