Evaluating the viability of dimethyl carbonate as an alternative fuel for the transportation sector.
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2017-06-01
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Abstract:Some of the most important questions in the development of sustainable transportation are
identify fuels that will reduce emissions, provide diversification from fossil fuels, reduce
greenhouse gas emissions, be produced from renewable sources, and that can be produced in a
sustainable manner. An alternative diesel fuel that could be used for particulate matter (PM)
reductions and be produced from renewable sources could represent a key advance for the
transportation sector in terms of sustainability, diversification for the marketplace for the
alternative fuels, emissions reductions, and reductions in greenhouse gases. Dimethyl
carbonate (DMC) is a potentially new fuel that could represent an important advance in the
diesel fuel area. DMC can be produced from renewable sources such as grass, manure, or trees.
Preliminary tests at the University of California at Riverside have also indicated PM reductions
of about 76% at only a 20% blend with diesel fuel, which is about double or triple the
reductions typically found for biodiesel at a comparable blend level, and comparable to the
reductions found for diesel particulate filters (DPFs). Although these preliminary results indicate
the promise of DMC as a PM mass reduction strategy, it is important to more completely
characterize the emissions and viability of DMC before it can be more widely used in the fuel
market or for in-field demonstrations.
The objective of this study was to conduct a preliminary evaluation of the viability of DMC as a
transportation fuel for fleet and wider applications. This included a literature review to address
questions related to air emissions, impact on vehicle system durability and parts, and any
potential storage issues. This study also included some additional emissions testing to evaluate
any emissions of toxic species, and to look at some optimization of blend level in terms of a full
range of emissions components.
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