Selected problems of real driving emissions measurement

The article compares driving test data using the latest legislative proposals applicable to passenger cars. Real Driving Emissions procedures have been introduced in the Commission Regulation (EU) 2016/427. Currently, quantitative RDE requirements have been established to limit emissions from exhaust systems in all operating conditions in accordance with the road emission limits set out in Regulation (EC) No. 715/2007. Several measurements were performed on the same test route in accordance with the RDE test guidelines, which requires a number of criteria to be met. These criteria include the length of the measuring segments, their overall test timeshare, and the dynamic characteristics of the drive. A mobile device for reading the EOBD System information was used to record the engine and vehicle operating parameters during tests. This allowed for the monitoring of parameters such as: load value, engine speed and vehicle velocity. The obtained results were then analysed for their compatibility with the RDE procedure requirements. Despite the same research route, the obtained results were not the same. The analysis also uses the two-dimensional operating time-share characteristics expressed in vehicle velocity and acceleration co-ordinates. As a result, it was possible to compare the dynamic properties, share of operating time and, consequently, to check the validity of conducted drive tests in terms of their practicability and emission values.

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Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).