Comparison of Portable Emissions Measurement Systems (PEMS) with Laboratory Grade Equipment
Source abstract
Abstract
Real-driving emissions (RDE) testing with portable emissions measurement systems (PEMS) during the type approval and in-service conformity of light-duty vehicles was recently introduced in the European Union legislation. In this paper, three PEMS were compared with laboratory analyzers connected to the tailpipe and the dilution tunnel. The tests were conducted with two Euro 6 vehicles (one gasoline and one diesel) performing the World harmonized Light vehicles Test Cycle (WLTC) and a pre-recorded RDE cycle on a chassis dynamometer. The results showed that the differences of the PEMS gas analyzers compared to the laboratory references were typically within 2% for CO2 and 5% for NOx. The CO2 and NOx mass emissions were within 10% and 15%, respectively, with only a few exceptions. The exhaust flow rate measurements were within 10% at low speeds (urban conditions), and 5% at higher speeds. These results confirm the legislated permitted tolerances and the 2017 PEMS uncertainty estimates.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Vehicle emissions and performance · Air Quality and Health Impacts · Air Quality Monitoring and Forecasting
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
LAETA, IDMEC, Instituto Superior Técnico, University of Lisbon Av. Rovisco Pais, 1049-001 Lisboa, Portugal
European Commission–Joint Research Centre, Directorate for Energy, Transport and Climate, Sustainable Transport Unit, 21027 Ispra, VA, Italy
Center for Innovation, Technology and Policy Research (IN+/IST), University of Lisbon–Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal
ADEM/ISEL/IPL, Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emídio Navarro 1, 1959-007 Lisbon, Portugal
Funding
National Council of Scientific and Technological Development (CNPq – Brazil)
References (16)
Show source-provided references
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