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Impact on Reduction of Pollutant Emissions from Passenger Cars when Replacing Euro 4 with Euro 6d Diesel Engines Considering the Altitude Influence

1
CMT–Motores Térmicos, Universitat Politècnica de València, 46022 València, Spain
2
HORIBA Europe GmbH, D-64293 Darmstadt, Germany
*
Author to whom correspondence should be addressed.
Energies 2019, 12(7), 1278; https://doi.org/10.3390/en12071278
Received: 18 March 2019 / Revised: 29 March 2019 / Accepted: 31 March 2019 / Published: 3 April 2019
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Abstract

The impact of Euro 4 compression ignition engines over the air quality in Europe has been analyzed in this work by comparing them with Euro 6d emissions regulation. The Euro 6d diesel engine has been chosen as the preferred replacement according to its advantages in global warming potential (GWP) emissions, like methane hydrocarbons (MHC) and CO2, with respect to Euro 6d petrol-based powertrains. The motivation for this study is that the effects of the emissions reduction policies, as the implementation of the regulation Euro 6d, are necessarily limited due to the great number of passenger cars still in circulation that were homologated under Euro 4 or older standards. To address the impact of the old vehicle pool, a Worldwide harmonized Light-vehicles Test Cycle (WLTC) has been used to analyze the performance and pollutant emissions of a Euro 4 diesel engine in altitude conditions. This driving cycle and engine are considered as a baseline for the subsequent discussion, where the altitude plays a key role because of the European geography. It forces passenger cars to drive over sea level during a significant number of trips. Thus, an analysis of how significant would be the impact of energy policies promoting the substitution of the pre-Euro 5 diesel fleet (>10 years old) by modern Euro 6d engines in the short term on the pollutants and GWP emissions reduction is presented. View Full-Text
Keywords: altitude; compression ignition engines; emissions; altitude influence; altitude simulator; WLTC altitude; compression ignition engines; emissions; altitude influence; altitude simulator; WLTC
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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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Serrano, J.R.; Piqueras, P.; Abbad, A.; Tabet, R.; Bender, S.; Gómez, J. Impact on Reduction of Pollutant Emissions from Passenger Cars when Replacing Euro 4 with Euro 6d Diesel Engines Considering the Altitude Influence. Energies 2019, 12, 1278.

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