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Energy Conversion Factor for Gasoline Engines in Real-World Driving Emission Cycle

Automotive Innovation 2020年第2期3卷 169-180页

作者： toshizaemom noce Sérgio de Morais Hanriot Luis Carlos Monteiro Sales JoséRicardo Sodré Matheus Bitarães de Novaes Department of Mechanical Engineering Pontifical University of Minas GeraisAv.Dom JoséGaspar 500Belo HorizonteMG 30535-901Brazil School of Engineering&Applied Science Aston UniversityAston TriangleBirmingham B47ETUK Department of Electrical Engineering Federal University of Minas GeraisAv.Pres.Antônio Carlos6627Belo HorizonteMG 31270-901Brazil

A precise energy conversion factor is required to define the impact of greenhouse gas emissions by gasoline-powered vehi-cles and policies that will guide the application of future *** current energy conversion factor adopted by many countries is based on the Willans line approach,initially proposed in 1888 for steam engines,later adapted for internal combustion *** actual energy conversion factor,which defines the energy conversion for drivers in real traffic,is *** this article,eight world-class engines are tested in an engine bench for the acquisition of specific fuel consumption 3D ***,their energy conversion factors,calculated by dividing the energy output by the energy input,are simulated in real and urban traffic,acquired according to the real driving emissions(RDE)*** addition,a reference vehicle is instrumented to measure the energy input(fuel flow)and the energy output(mechanical energy in the half axles)under the same RDE cycle *** results of both procedures are very similar,respectively,0.405±0.04 L/kWh for the simulation based on eight benchmark engines,and 0.392±0.04 L/kWh for the reference vehicle driven in RDE traffic conditions,with a 95%confidence *** turbocharged engines,the factor attained by the simulation is 0.395±0.04 L/*** values of the energy conversion factor for gasoline engines got in this research are higher than those obtained through the Willans line approach,suggesting a new standard value of 0.405 L/kWh,replacing the current 0.264 L/*** could substantially change the greenhouse gas emissions in a tank-to-wheel approach for the entire vehicle and add-on eco-innovations.

关键词： Energy conversion factor Willans line EC443 Eco-innovation CO_(2)emission

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