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A Technical and Financial Analysis of Potentially Near-Zero Greenhouse Gas Emission Passenger Vehicles
ISSN: 1946-3995, e-ISSN: 1946-4002
Published April 08, 2013 by SAE International in United States
Citation: Brear, M., Dennis, P., Manzie, C., and Sharma, R., "A Technical and Financial Analysis of Potentially Near-Zero Greenhouse Gas Emission Passenger Vehicles," SAE Int. J. Passeng. Cars - Mech. Syst. 6(1):61-77, 2013, https://doi.org/10.4271/2013-01-0496.
This paper presents a technical and financial analysis of several, potentially near-zero greenhouse gas emission passenger vehicles for Australian driving conditions. Conventional, series hybrid, plug-in hybrid (PHEV) and fully electric (BEV) vehicles of class B and class E sizes are considered, with their propulsive energy assumed to originate from a source that is free of net greenhouse gas emissions.
Extensions to the vehicle models developed by the authors in our previous works [1, 2, 3] are first developed. These enable estimation of the size of each major component in each powertrain, and therefore the total, in-service energy consumption and in-service greenhouse gas emissions. The component sizing also allows estimation of the each vehicle's purchase price, its embodied energy and its embodied greenhouse gas emissions, the latter assuming scenarios for both the current and a future, low emission intensity of Australian manufacturing.
The ability of increasingly electric powertrains to reduce in-service energy consumption and emissions, with correspondingly higher up-front price and higher embodied emissions, are then evaluated. Overall, the results suggest that full vehicle electrification is not the clear end-point in the evolution of the passenger vehicle powertrain, since PHEVs/BEVs may perform worse environmentally, financially and in utility than alternatives. A technologically neutral approach to the progressive reduction of passenger vehicle lifecycle emissions therefore appears appropriate, with the hydrogen economy one potential outcome and the continued use of the internal combustion engine appearing likely. Such an approach is thought to minimise the risk of perverse incentives, both today and in future, as this paper suggests could occur if fully electric vehicles are given preferential treatment.
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