Isotopic Tracing of Fuel Component Carbon in the Emissions From Diesel Engines Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory

Format:

Conference/Event

Author/Creator:

Buchholz, Bruce A., author.

Conference Name:

Future Car Congress (2002-06-03 : Hyatt Crystal City, Virginia, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2002

Summary:

The addition of oxygenates to diesel fuel can reduce particulate emissions, but the underlying chemical pathways for the reductions are not understood. While measurements of particulate matter (PM), unburned hydrocarbons (HC), and carbon monoxide (CO) are routine, determining the contribution of carbon atoms in the original fuel molecules to the formation of these undesired exhaust emissions has proven difficult. Using accelerator mass spectrometry (AMS) diagnostics, carbon atoms in a specific bond position in a specific fuel molecule can be labeled with carbon-14 (14C) and traced through the combustion event to determine whether they reside in PM, HC, CO, CO2, or other emission products. This knowledge of how specific molecular structures produce certain emissions can be used to refine chemical-kinetic combustion models and to optimize fuel composition to reduce undesired emissions. Due to the high sensitivity of the technique and the lack of appreciable 14C in fossil fuels, fuels for AMS experiments can be labeled with such a small amount of 14C that they are not even considered radioactive

Notes:

Vendor supplied data

Publisher Number:

2002-01-1942

Access Restriction:

Restricted for use by site license