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1 Journal of Ecological Engineering

1 2024

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Analysis of the Impact of the Comfort Systems in Sport Utility Vehicles on the Exhaust Emissions Measured under Worldwide Harmonized Light Vehicles Test Cycles Conditions

Siedlecki Maciej, Ziółkowski Andrzej, Ratajczak Katarzyna, Bednarek Maciej, Jagielski Aleks, Igielska-Kalwat Joanna

Journal of Ecological Engineering

2024

Vol. 25, nr 12

93--105

This study investigated the impact of comfort systems in sport utility vehicles (SUVs) on exhaust emissions and fuel consumption under the worldwide harmonized light vehicles test cycle (WLTC) conditions. Two modern SUVs equipped with gasoline engines of 3.6 and 2.0 liter displacement were tested, both featuring various comfort systems, such as automatic climate control, heated seats, and active safety systems. Measurements were conducted using a chassis dynamometer under three operating modes: with comfort systems off, with comfort systems on, and with comfort systems on in sport mode. The results indicated that the activation of comfort systems leads to significant increases in fuel consumption and emissions, including hydrocarbons (up to 29%), carbon monoxide (up to 42%), and particulate matter (up to 58%). The study highlighted the necessity of conducting further research on the influence of comfort systems on vehicle emissions, particularly as these systems become more prevalent in modern vehicles. Additionally, the research underscored the potential for increased operational costs and environmental impact due to enhanced vehicle comfort features.