• UTRC II SUBMISSION SYSTEM
  • Careers
  • Contact
  • Login / Register

Search form

Home
  • Home
  • About
    • Welcome to the UTRC Site
    • Theme
    • Staff
    • Board of Directors
    • Press
    • Annual Report
    • Program Progress Performance Report
    • Newsletter
  • Research
    • Projects
    • RFPs
    • Submit Your Proposal
    • Funding Categories
      • UTRC Research Initiative
      • UTRC Advanced Technology Initiative
      • UTRC Faculty Development Mini-grants
      • UTRC Best Transportation Paper Competition
      • News
  • Publications
  • Directory
    • Consortium Universities
    • Partners
    • Principal Investigators
    • Staff
    • Board of Directors
  • Education
    • Where to Study
    • Transportation and Planning Doctoral Series
    • AITE Scholarships
    • UTRC Dissertation Grants
    • Summer Institute
    • September 11th Memorial Program
    • Technology Transfer and Training
    • Online Graduate Certificate Program
    • UTRC Travel Grants
    • Student Award Recipients
    • Apply For Scholarships
  • Events
    • Upcoming Events
    • Past Events
    • Visiting Scholar Seminar Series
  • Resources

Diesel Ultrafine/Fine Particle Emissions in Numbers:Statistical Modeling and Evaluation of Engine Operating Variables

This work aims to develop statistical models for ultrafine/fine particle number emission rates from a
diesel bus, to evaluate the explanatory power of engine operating variables. Emissions were recorded
by using on-board instrumentation in two types of real-world driving conditions: a freeway
commuting route and a within-city-limits bus route, with stop and go due to intersections and bus
stops. To reduce the risk of drawing spurious conclusions, three replications of the experiment were
performed and linear models were estimated using the robust-to-outliers quantile regression method.
The set of explanatory covariates examined includes engine speed, engine load percentage, fuel to
air ratio, injection pressure, boost pressure and exhaust temperature; statistical models were
corrected for variations in ambient temperature.

Project Details

Universities: 
Cornell University
Publication Year: 
2009
Publication Type: 
Final Report
Publication Category: 
Environment
Research
Please subscribe to our Newsletter:

Get our newsletter

Please enter your email address to subscribe to our newsletter:

Contact Us

University Transportation Research Center
Marshak Hall - Science Building, Suite 910 
The City College of New York
138th Street & Convent Avenue ,New York, NY 10031