Nuclei-mode particulate emissions and their response to fuel sulfur content and primary dilution during transient operations of old and modern diesel engines.

@article{Liu2007NucleimodePE,
  title={Nuclei-mode particulate emissions and their response to fuel sulfur content and primary dilution during transient operations of old and modern diesel engines.},
  author={Z. Gerald Liu and Victoria N. Vasys and David B. Kittelson},
  journal={Environmental science \& technology},
  year={2007},
  volume={41 18},
  pages={
          6479-83
        }
}
The effects of fuel sulfur content and primary dilution on PM number emissions were investigated during transient operations of an old and a modern diesel engine. Emissions were also studied during steady-state operations in order to confirm consistency with previous findings. Testing methods were concurrent with those implemented by the EPA to regulate PM mass emissions, including the use of the Federal Transient Testing Procedure-Heavy Duty cycle to simulate transient conditions and the use… 
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