Eighteen-Month Final Evaluation of UPS Second Generation Diesel Hybrid-Electric Delivery Vans [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 629.28 Tests, driving, maintenance, repair
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2012
• Mô tả vật lý: Size: 2.5 MB : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 267374
• Chủ đề: 1. 32 energy conservation, consumption, and utilization; 2. 33 advanced propulsion systems; 3. Diesel; 4. Hybrid; 5. Hybrid advantage

Tóm tắt

 A parallel hybrid-electric diesel delivery van propulsion system was evaluated at a UPS facility in Minneapolis using on-vehicle data logging, fueling, and maintenance records. Route and drive cycle analysis showed different duty cycles for hybrid vs. conventional delivery vans
  routes were switched between the study groups to provide a valid comparison. The hybrids demonstrated greater advantageon the more urban routes
  the initial conventional vans' routes had less dense delivery zones. The fuel economy of the hybrids on the original conventional group?s routes was 10.4 mpg vs. 9.2 mpg for the conventional group on those routes a year earlier. The hybrid group's fuel economy on the original hybrid route assignments was 9.4 mpg vs. 7.9 mpg for the conventional group on those routes ayear later. There was no statistically significant difference in total maintenance cost per mile or for the vehicle total cost of operation per mile. Propulsion-related maintenance cost per mile was 77% higher for the hybrids, but only 52% more on a cost-per-delivery-day basis. Laboratory dynamometer testing demonstrated 13%-36% hybrid fuel economy improvement, depending on duty cycle, and up toa 45% improvement in ton-mi/gal. NOx emissions increased 21%-49% for the hybrids in laboratory testing.