Abstract Heavy-Duty Vehicles (HDVs) pose a significant challenge in meeting emissions reduction targets. However, studies on estimating emissions from Irish HDV fleet are rare. This paper estimates fuel consumption and CO2 emissions from tractor-trailers that occupy nearly half of Ireland’s HDV fleet using the European Commission recommended VECTO tool. To improve the estimation accuracy, driving cycles specific to Irish road conditions were developed utilising real naturalistic driving data from trucks. The Irish driving cycles significantly differ from the VECTO inbuilt driving cycles in percentage time spent in different gears, fuel consumption, and CO2 emissions. CO2 emissions estimated with Irish driving cycles range from 733 to 1961 g/km, while with VECTO driving cycles, the values ranged from 728 to 1865 g/km. Further, the study evaluated the sensitivity towards payload, road gradient, and idling percentages. The study insights would provide an essential evidence base for policymakers in Ireland.
Graphical abstract Display Omitted
Highlights Developed Irish urban, regional, and freeway driving cycles. Employed the VECTO tool to assess CO2 emissions from Irish heavy-duty vehicle fleet. Focused on tractor-trailers with a major share in the Irish fleet. Evaluated the effect of idling, gradient, and payload on CO2 emissions. Fuel consumption is underestimated by up to 7.1% when the road gradient is ignored.
Greenhouse gas emissions from heavy-duty vehicles in Ireland
2024-03-09
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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