Measurement of Gaseous Exhaust Emissions of Light-Duty Vehicles in Preparation for Euro 7: A Comparison of Portable and Laboratory Instrumentation

Victor Valverde, Yosuke Kondo, Yoshinori Otsuki, Torsten Krenz, Anastasios Melas, Ricardo Suarez-Bertoa and Barouch Giechaskiel ()
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Victor Valverde: European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
Yosuke Kondo: HORIBA Ltd., Shiga 520-0102, Japan
Yoshinori Otsuki: HORIBA Ltd., Shiga 520-0102, Japan
Torsten Krenz: HORIBA Europe GmbH, 42799 Leichlingen, Germany
Anastasios Melas: European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
Ricardo Suarez-Bertoa: European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
Barouch Giechaskiel: European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy

Energies, 2023, vol. 16, issue 6, 1-20

Abstract: The European Union’s ambition to reach climate neutrality and a toxic-free environment by 2050 entails, among other things, cleaner road vehicles. The European Commission’s proposal for the next regulatory emissions standard, Euro 7, requires the measurement of pollutants currently not regulated on the road. In this study we compared a prototype portable emissions measurement system (PEMS) measuring CO 2 , CO, NO, NO 2 , N 2 O, NH 3 , CH 4 , and HCHO based on infrared laser absorption modulation (IRLAM), and two Fourier transform infrared (FTIR) spectrometers with laboratory grade analyzers. To this end, one Euro 6d Diesel, one Euro 6d gasoline, and one Euro 4 gasoline vehicle were tested at −7 °C and 23 °C with various driving cycles covering traffic conditions to highway dynamic driving. The results demonstrated that the differences among the instruments were small: ±1 mg/km for HCHO, N 2 O, and CH 4 , ±2.5 mg/km for NH 3 , ±10–15 mg/km for NO x , ±50 mg/km or ±15% for CO (whichever was larger), and ±10–15 g/km for CO 2 . These values corresponded to <10–15% of the proposed Euro 7 limits or the emission levels of the tested vehicles. Our results confirm the feasibility of on-board systems to measure the conventional components including CO 2 and the aforementioned additional pollutants.

Keywords: Euro 7; vehicle emissions; ammonia; N 2 O; PEMS; FTIR; IRLAM (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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