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Appl. Sci. 2018, 8(11), 2275; https://doi.org/10.3390/app8112275

Inter-Laboratory Correlation Exercise with Portable Emissions Measurement Systems (PEMS) on Chassis Dynamometers

1
Joint Research Centre–European Commission, via E. Fermi 2749, 21027 Ispra, VA, Italy
2
Innovhub-SSI—SSC, via Galileo Galilei 1, 20097 San Donato Milanese, MI, Italy
3
FCA—Powertrain Engineering Cento, via Ferrarese 29, 44042 Cento, FE, Italy
4
FCA—Powertrain Engineering Pomigliano, via ex-Aeroporto, 80038 Pomigliano d’Arco, NA, Italy
5
FCA—Product Engineering Sangone, strada del Drosso 145, 10135 Torino, TO, Italy
6
Ferrari SpA, via Musso 2, 41053 Maranello, MO, Italy
7
Automobili Lamborghini SpA, via Modena 12, 40019 S. Agata Bolognese, BO, Italy
8
Landi Renzo, via Nobel 2, 42025 Cavriago, RE, Italy
9
Horiba, via Giovani Batista Feroggio 30, 10128 Torino, TO, Italy
10
Istituto Motori CNR, Viale Marconi 8, 80125 Napoli, NA, Italy
11
CUNA, Corso Galileo Ferraris 61, 10128 Torino, TO, Italy
*
Author to whom correspondence should be addressed.
Received: 22 October 2018 / Revised: 12 November 2018 / Accepted: 13 November 2018 / Published: 17 November 2018
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Abstract

The recently introduced Real Driving Emissions (RDE) light-duty vehicle emissions regulation requires testing with Portable Emissions Measurement Systems (PEMS) during type approval and in-service conformity. The studies on the accuracy of PEMS today are limited. An inter-laboratory correlation exercise with PEMS took place in Italy in 2017. Eight laboratories measured exhaust emissions from a Golden Euro 6 gasoline vehicle with a Golden PEMS installed in it, along with the individual lab’s own PEMS, following the regulated laboratory method (bags from the dilution tunnel). The data of the exercise were used to estimate the repeatability and reproducibility of the methodology with PEMS. The statistical analysis estimated reproducibility of 2.9% (bags) to 5.5% (lab PEMS) for CO2, 20–25% for CO (all methods), 23–31% for NOx (all methods), and 29% (tunnel, Golden PEMS) to 39% (lab PEMS) for particle number. The mean differences of the PEMS to the regulated method were ±1.5 g/km (or ±1%) for CO2, <16 mg/km (or <5%) for CO, <4 mg/km (or <11%) for NOx and 1 × 1011 particles/km (40%) for particle number. The results of this study confirm the satisfactory performance of PEMS and the permissible tolerances introduced in RDE regulation. View Full-Text
Keywords: vehicle emissions; real-driving emissions (RDE); Portable Emissions Measurement Systems (PEMS); validation test; round robin; repeatability; reproducibility vehicle emissions; real-driving emissions (RDE); Portable Emissions Measurement Systems (PEMS); validation test; round robin; repeatability; reproducibility
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Giechaskiel, B.; Casadei, S.; Mazzini, M.; Sammarco, M.; Montabone, G.; Tonelli, R.; Deana, M.; Costi, G.; Di Tanno, F.; Prati, M.V.; Clairotte, M.; Di Domenico, A. Inter-Laboratory Correlation Exercise with Portable Emissions Measurement Systems (PEMS) on Chassis Dynamometers. Appl. Sci. 2018, 8, 2275.

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