Texas Environmental Research Consortium
Environmental Improvement Through Research
 
Project N-030
Root Cause Analysis of Changes in NOx Emissions due to Biodiesel Combustion in Diesel Engines

Sub-Grantees:Texas Engineering Experiment Station

This proposed research seeks to identify the root causes of characteristically increased nitric oxides (NOx) emissions with biodiesel fuel relative to petroleum diesel fuel in diesel engines, with the following specific objectives:

  • Identify the root causes of differences in NOx and other emissions from biodiesel fueled engines and petroleum diesel fueled engines.
  • Determine how energy resources in Texas can be used to produce qualifying fuels.

The completion of the above objectives will occur via an integrated approach of experimental and model-based activities that focus on in-cylinder nitric oxide (NO) formation, fuel manufacturing modification, feedstock determination, additive and water addition, and novel combustion implementation. The proposed work is based on a unique collaboration that joins combustion and engine expertise with fuel and agricultural expertise. Experimental techniques will use diesel engine test facilities to identify fundamental mechanisms surrounding NO formation processes such as thermal formation (influenced by combustion timing, combustion phasing, and radiation heat transfer) and fuel-bound nitrogen.


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