Effect of Injection Pressure and Engine Speed on Air/Fuel Mixing and Emissions in a Pre-Mixed Compression Ignited (PCI) Engine using Diesel Fuel
2004 (English)In: 2004 Powertrain & Fluid Systems Conference & Exhibition Technical Papers, 2004, Vol. 01-2989, 2004-01-2989- p.Conference paper (Refereed)
PCI combustion of diesel fuel was accomplished in a direct-injected heavy-duty single-cylinder research engine. An impinging spray nozzle combined with a shallow bowl piston design offered a short air/fuel mixing time. Low HC and CO emissions were observed compared to fully premixed operation using n-heptane. A method for evaluating the air/fuel mixing process has been established by quantifying the in-cylinder air/fuel heterogeneity with the NOx emission. The results indicate that high injection pressure and engine speed are favorable for a fast mixing process. The injection pressure had a small impact on HC and CO emissions, while the engine speed had a larger impact. There were no correlation between air/fuel mixing time and HC and CO emissions.
Place, publisher, year, edition, pages
2004. Vol. 01-2989, 2004-01-2989- p.
IdentifiersURN: urn:nbn:se:kth:diva-6775DOI: 10.4271/2004-01-2989ScopusID: 2-s2.0-84877237526OAI: oai:DiVA.org:kth-6775DiVA: diva2:11580
2004 Powertrain & Fluid Systems Conference & Exhibition, October 2004, Tampa, FL, USA, Session: Homogeneous Charge Compression Ignition (Part C&D)
QC 201008252007-02-142007-02-142010-08-25Bibliographically approved