GURDAS S. SANDHU
Projects completed during Graduate School (2008 - 2014)

  • Developed PEMS Quality Assurance Software (PQAS) – GUI-based platform used at Dr. Chris Frey’s vehicle emissions laboratory at NCSU since 2010; features include data quality-assurance, time alignment, road-grade estimation, exhaust flow rate calculations, and generation of modal emissions rates. See Appendix F of Ph.D. dissertation for screenshots of the software.
  • Unofficial lab technician – maintained portable emissions measurement system (PEMS) equipment and trained over a dozen colleagues on PEMS-based measurement and data analysis.
  • Conducted over 500 hours of portable emissions measurement system (PEMS) based real-world in-use data collection covering a variety of vehicles, fuels, and duty cycles:
      Solo
  • Refuse trucks – 24 vehicles (18 diesels from MYs 2003-2012 having EGR, DOC, DPF, or SCR and 6 CNG from MY 2012-2013 with TWC); largest study on refuse trucks to date
  • Combination Long-haul trucks – five vehicles, MY 1999–2010, with EGR, DOC, DPF, SCR, using ULSD (baseline) and B20 with/without fuel additive
  • Earthmoving equipment – three wheel-loaders, MY 2007–2008, using ULSD, B20, B35
      Major contribution
  • Over-snow vehicles – five snow-coaches (two MY 2011 diesel with DPF and SCR, three gasoline from MYs 2002, 2008, and 2011) and three snow-mobiles (gasoline MY 2008-2012) at Yellowstone National Park
      Significant contribution
  • Light-duty vehicles – eight student-owned passenger vehicles, MY 1998-2008; part of a larger campaign conducted over many years
      Minor contribution
  • PHEV – energy use (charge sustaining/depleting) and emissions from a MY 2013 plug-in hybrid Toyota Prius; developed software for operating mode transition matrix
  • Locomotives – engine dynamometer measurements; developed software for notch-based modal analysis; assisted with PEMS installation and maintenance during over-the-rail tests.
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  • Home
  • CV
  • Projects
    • U.S. EPA (2015 - 2020)
    • Graduate Research (2008-2014)
  • Publications
    • Patents
    • Journal Articles
    • Presentations
    • Reports
  • Connect
  • Contact