UPS Hybrid Electric Delivery Vans
NREL has a long history of working in partnership with the United Parcel Service (UPS) to track and evaluate the in-service performance of its diesel hybrid electric vehicles.
First-Generation Hybrid Vans
In 2008, NREL's Fleet Test and Evaluation Team evaluated the first-generation hybrid delivery vans operated by UPS in Phoenix, Arizona, and found that the hybrid vans demonstrated 29%–37% higher fuel economy than comparable conventional diesel vans.
NREL's follow-up evaluation of these vehicles over three years of operation showed that the hybrid vans demonstrated 23% higher fuel economy than the conventional diesel vans.
The following technical reports provide detailed information:
- Thirty-Six Month Evaluation of UPS Diesel Hybrid-Electric Delivery Vans, March 2012
- Twelve-Month Evaluation of UPS Diesel Hybrid-Electric Delivery Vans, December 2009
Second-Generation Hybrid Vans
In 2010, UPS deployed 200 second-generation hybrid vans among eight U.S. cities. NREL evaluated the performance of 11 of these second-generation hybrid vans and 11 comparable conventional diesel vans operated by UPS in Minneapolis, Minnesota, over an 18-month period. The second-generation hybrids included more advanced control algorithms and an "engine off at idle" feature.
The hybrid vans demonstrated 13%–20% higher fuel economy than the conventional vans during the on-road portion of the study. The two vehicle groups switched route assignments during the study period to provide a balanced review of the vans on the same routes.
During dynamometer testing at NREL's Renewable Fuels and Lubricants (ReFUEL) Laboratory, the hybrids showed a 13%–36% improvement in fuel economy (depending on drive cycle) and up to a 45% improvement in ton-miles-per-gallon.
The following documents provide more information:
- Eighteen-Month Final Evaluation of UPS Second-Generation Diesel Hybrid-Electric Delivery Vans, September 2012
- Measured Laboratory and In-Use Fuel Economy Observed over Targeted Drive Cycles for Comparable Hybrid and Conventional Package Delivery Vehicles, September 2012
- Interim Project Results: UPS Second-Generation Hybrid-Electric Delivery Vans, January 2012
- Project Overview: UPS Second-Generation Hybrid-Electric Delivery Vans, October 2011