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

摘要: The effects of fuel sulfur content and primary dilution on PM number emissions were investigated during transient operations an old a modern diesel engine. Emissions also studied steady-state in order to confirm consistency with previous findings. Testing methods concurrent those implemented by the EPA regulate mass emissions, including use Federal Transient Procedure-Heavy Duty cycle simulate conditions Critical Flow Venturi-Constant Volume System provide dilution. Steady-state results found be consistent studies that nuclei-mode particulate largely reduced when lower-sulfur was used newer engine, while from older engine much less affected content. results, however, show total both engines increases content, al...