News & Features

• 
  ORNL roof and attic design proves efficient in summer and
  winter
• September
  2012 Story Tips
• 
  ORNL’s newly licensed neutron detector will advance human disease
  research
• 
  Team UT-Battelle builds a home to help ADFAC mark 25 years of
  service
• 
    Video News
  Coverage
• 
    RSS News
  Feed
• 
    Podcast of
  Audio News

ORNL Review

• Innovation
  drives the nation
• Printing
  out the future
• Next-gen
  engineers
• Synergistic
  R&D
• Strategic
  science

Story Tip

Follow     RSS     Print     Photos     Video

This is a story idea from the Department of Energy’s Oak Ridge
National Laboratory. To arrange for an interview with a researcher,
please contact the Communications and External Relations staff
member identified at the end of the tip.

COMBUSTION — Hitting on all cylinders
. . .

With the first demonstration of a dual-fuel advanced combustion
cycle in a modified multi-cylinder engine, researchers have moved
closer to delivering on the promise of increased fuel efficiency
and reduced emissions. Oak Ridge National Laboratory researchers
started with a 2007 General Motors 1.9-liter four-cylinder diesel
engine, which they modified for reactivity controlled compression
ignition operation. The engine was configured to have two separate
fuel systems — the original direct-injection diesel fuel system
plus a port fuel injection system for gasoline-like fuels. In
addition to improved efficiency and lower nitrogen oxide and soot
emissions, this combustion mode features greater fuel flexibility
when compared to other advanced combustion. This ORNL milestone,
made possible with the help of the University of Wisconsin, bridges
the gap between fundamental and applied research, said Scott Curran
of ORNL’s Fuels Engines and Emissions group. [