Impact of a Commercially Available Low Carbon Renewable Diesel Fuel on the Light-Off and Light-Down Characteristics of a Diesel Oxidation Catalyst.

Meeting future greenhouse gas emissions targets in transportation may require transition in part to renewable low carbon fuels to power the medium- and heavy-duty sectors. At this moment, market renewable low carbon diesel fuels are available and integrated with the fueling infrastructure in select areas. Though this is encouraging, little is known about the impact these renewable diesel fuels may have on modern aftertreatment systems and their ability to convert toxic emissions.

Influence of Ash-Soot Interactions on the Reactivity of Soot from a Gasoline Direct Injection Engine.

Gasoline particulate filters (GPF) are being utilized in certain markets on gasoline direct injection (GDI) vehicles to reduce tailpipe particulate emissions as required by particle number regulations. GPF filtration efficiency is dependent on soot build-up within the filter. Since soot oxidizes within the GPF during normal vehicle operation, an understanding of soot reactivity is important for optimizing aftertreatment architecture and engine calibration.