Gasoline hybrid electric delivery vehicles reduce tailpipe emissions while maintaining fuel economy

Feb 25, 2011

The U.S. Department of Energy’s (DOE) National Renewable Energy Laboratory (NREL) recently completed a yearlong technology evaluation of gasoline hybrid electric (gHEV) trucks compared with conventional diesel vehicles. A report released this week details NREL’s efforts to determine the impact of hybridization on performance, emissions, and fuel economy.

The gHEV trucks produced substantially reduced tailpipe emissions during all drive cycles tested in the laboratory when compared to conventional diesel vehicles. On a drive cycle representing routes with frequent stops and accelerations, the gHEV trucks exhibited a 20 percent improvement in while drive cycles representing routes with fewer stops and accelerations demonstrated similar fuel economy to the diesels.

“We conducted this study to show how a gasoline hybrid might perform compared to a conventional diesel truck given that gasoline engines are less efficient than diesel engines and generally not used in heavier vehicles,” said Lee Slezak, program manager for DOE’s Advanced Vehicle Testing Activity.

NREL’s Fleet Test and Evaluation Team collected and analyzed fuel economy, maintenance, and other vehicle performance data on three gHEV trucks and three conventional diesel trucks used for FedEx parcel delivery service in the Los Angeles area. The team also tested a hybrid and conventional truck at NREL’s Renewable Fuels and Lubricants Research Laboratory in Denver, Colo.

“Southern California continues to experience the worst air quality in the nation, and transitioning heavy-duty vehicle fleets to cleaner-burning vehicle technology is an important element of our overall clean air goals,” said Barry R. Wallerstein, executive officer of the South Coast Air Quality Management District.

Manufactured by Ford, the gHEV trucks feature 5.4L gasoline engines and hybrid propulsion systems produced by Azure Dynamics with 100kW electric motors, regenerative braking, and nickel-metal-hydride batteries.

FedEx Express operates more than 32,000 motorized vehicles in the United States, including 20 gHEVs on parcel delivery routes in Los Angeles and Sacramento, Calif. The FedEx Express hybrid fleet, which has driven more than 8 million miles in revenue service, includes an all-hybrid station in Bronx, N.Y., where nearly half of the vehicles are gHEVs.

Explore further: Intelligent façades generating electricity, heat and algae biomass

Provided by National Renewable Energy Laboratory

1 /5 (1 vote)
add to favorites email to friend print save as pdf

Related Stories

NREL Evaluates UPS Hybrid-Electric Van Performance

Dec 22, 2009

(PhysOrg.com) -- The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) has collected and analyzed fuel economy, maintenance and other vehicle performance data from UPS’s first generation hybrid diesel ...

NREL Estimates U.S. Hybrid Electric Vehicle Fuel Savings

Jun 21, 2007

Hybrid electric vehicles have saved close to 230 million gallons – or 5.5 million barrels – of fuel in the United States since their introduction in 1999, according to a recent analysis conducted at the U. S. Department ...

New Cost Tool Helps Fleet Managers Evaluate Hybrid Vehicles

Aug 04, 2005

A new software tool that compares the costs and emissions of hybrid electric vehicles (HEVs) to conventional vehicles is now available for government and business fleet managers interested in reducing fuel costs and protecting ...

Software eases flow to fluid power trucks

Dec 24, 2008

Eaton Corporation is using IBM modeling software to develop series hydraulic hybrid systems. Replacing a vehicle’s conventional drive train and transmission, the series hydraulic hybrid (SHH) system promises dramatic fuel ...

Hybrid Bus in the City: A Prototype with a Future

Aug 20, 2007

Nuremberg’s public transport system has become more "electrified" thanks to a diesel-electric hybrid bus developed by MAN. The vehicle is equipped with drive-system technology from Siemens.

Recommended for you

Fuel cells to connect our smartphones to the outside world

10 hours ago

The potential of hydrogen and fuel cell applications goes way beyond the development of green cars. The FCPOWEREDRBS team is determined to prove this with a Fuel Cell technology to power off-grid telecom stations. They believe ...

The state of shale

Dec 19, 2014

University of Pittsburgh researchers have shared their findings from three studies related to shale gas in a recent special issue of the journal Energy Technology, edited by Götz Veser, the Nickolas A. DeCecco Professor of Che ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.