2 Class 8 tractor-trailers are responsible for 12-13% of the total US consumption of petroleum Class 8 tractor-trailers consume roughly 12-13% of the total United States petroleum usage (21 million barrels/day). They average between 5 and 8 mpg. A 1% improvement in fuel economy of tractor- trailers translates into 285 million gallons of diesel fuel saved per year. This is roughly equivalent to 3 million tons of CO .
December 2011 You will hear about LLNL's computational capabilities in aerodynamic drag reduction for medium and heavy trucks.
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1. 2Class 8 tractor-trailers are responsible for 12-13%of the
total US consumption of petroleum Class 8 tractor-trailers
consumeroughly 12-13% of the total UnitedStates petroleum usage (21
millionbarrels/day). They averagebetween 5 and 8 mpg. A 1%
improvement in fueleconomy of tractor-trailerstranslates into 285
million gallonsof diesel fuel saved per year. Thisis roughly
equivalent to 3 milliontons of CO2.
2. 3Aerodynamics: Lower Truck Fuel Use & Emissions
Swiss-German designer Luigi Colani: 2007 managed to reduce fuel
consumption by50 percent by aerodynamics alone Colani's Siemens
concept truck cost $1 million to construct Compare to mass-produced
trucks: new 2011 International 9900 semi sells foraround $150,000
3. 4Drag Reduction Device Market The 2010 Medium-Heavy
TruckAftermarket (what you spend after youbuy the truck) reached
$12 billiondollars Commercial measure of success:device pays for
itself in one year withfuel savings Device price ranges between
$100 and$10,000 Early adopters complain of
functionalityinterference and maintenance concerns Device market
may allow easier entryfor startupsSideskirts 15 % cut in fuel
consumption: Delft UnivRounded corners pneumatic controls blowing
air from slots: Georgia Tech 4. 5LLNL Green Aerodynamic Patent
Portfolio Active research program with multi-patentposition
including patents on: underbody fairings, wheel fairings, trailers
skirts, boat-tail plates, gap plates, and vortex fans
State-of-the-Art computational fluiddynamics modeling on
supercomputers Industrial partners and DOE consortiumto validate
acceptance metrics Wind tunnel testing 5. 6Spring 2010 NASA Wind
Tunnel Testing 120'X80' wind tunnel at NASA AmesResearch Center. It
has the largest windtunnel section in the world. Top-performing
devices from fivecompanies were down-selected fortrack testing
Collaborators: Navistar and NASA Contributing companies Freight
Wing,Laydon, ATDynamics, Windyne, andAerofficient 6. 7Sweet Spots
and Team PlayersAirflowSkin frictionbodyhigher pressure lower
pressureTop-performing devices from five companies down-selected
for track testing~ 5 gap devices ~ 2 base devices~ 10 underbody
devices 7. 8Ready to Partner LLNL has both computationaland
experimental expertise A patent portfolio of a dozengreat
aerodynamic ideas Ready to explore ways to getthese ideas on the
road 8. 9For more information:Leah
[email protected]
