On-road and laboratory emissions from three gasoline plug-in hybrid vehicles - Part 1: regulated and unregulated gaseous pollutants and greenhouse gases

Road transport is a relevant source of greenhouse gas emissions. In order to meet the European decarbonisation targets the share of electrified vehicles, including battery electric vehicles and plug-in hybrid electric vehicles (PHEVs), is rapidly growing, becoming the second most popular powertrain in the European market. PHEVs are of interest since they are expected to deliver reduction both in gaseous pollutants such as NOx as well as in greenhouse gases such as CO2. For this reason, we herein explored both categories of emissions for three PHEVs with gasoline direct injection engines, meeting the latest European emission standards (Euro 6d and Euro 6d-TEMP). They were studied in laboratory and on the road, in different modalities and temperatures. The results indicate that, for the sample tested, the expected reduction in pollutants emission due to the presence of a hybrid gasoline-electric traction seemed in some cases limited, showing also high variability. CO2 emissions were also affected by the initial state of charge of the vehicles’ high voltage battery as well as from the user selectable operating mode, also in this case with an high variability.

SELLERI Tommaso;  MELAS Anastasios;  FRANZETTI Jacopo;  FERRARESE Christian;  GIECHASKIEL Barouch;  SUAREZ BERTOA Ricardo; 

2022-04-11

MDPI

JRC128639

1996-1073 (online),   

https://www.mdpi.com/1996-1073/15/7/2401,    https://publications.jrc.ec.europa.eu/repository/handle/JRC128639,   

10.3390/en15072401 (online),