400 Commonwealth Drive, Warrendale, PA 15096-0001 U.S.A. Tel: (724) 776-4841 Fax: (724) 776-5760 Web: www.sae.org SAE TECHNICAL PAPER SERIES 2003-01-0271 Shared Technology/Shared Cost, the Evaluation of the Allison EP-50 Elect ric Drive for Military and Commercial Vehicles Jana M. Paschen and Carl Johnson US Army Tank-automotive and Armaments Command National Automotive Center 2003 SAE World Congress Detroit, Michigan March 3-6, 2003Downloaded from SAE International by Univ of California Berkeley, Wednesday, August 01, 2018ISSN 0148-7191 Positions and opinions advanced in this paper are those of the aut hor(s) and not necessarily those of SAE. The author is solely responsible for the content of the paper. A process is available by which discussions will be printed with the paper if it is published in SAE Transactions. Persons wishing to submit papers to be c onsidered for presentation or publication thr ough SAE should send the manuscript or a 3 00 word abstract to Secretary, Engineering Meetings Board, SAE. Printed in USA For multiple print copies contact: SAE Customer Service Tel: 877-606-7323 (inside USA and Canada)Tel: 724-776-4970 (outside USA)Fax: 724-776-1615Email: Customer Service@sae.orgFor permission and licensing requests contact: SAE P ermissions 400 Commonwealth Drive Warrendale, PA 15096-0001-USAEmail: permissions@sae.orgFax: 724-772-4028Tel: 724-772-4891Downloaded from SAE International by Univ of California Berkeley, Wednesday, August 01, 20182003-01-0271 Shared Technology/Shared Cost, the Evaluation of the Allison EP-50 Electric Drive for Military and Commercial Vehicles Jana M. Paschen and Carl Johnson US Army Tank-automotive and Armaments Command National Automotive Center ABSTRACT In order to improve fuel efficiency, reduce the logistical footprint, generate power, and lighten vehicles the Army must transform its fleet of vehicles. One path is using hybrid electric vehicles. The National Automotive Center (NAC) and Electricore Inc. are currently engaged in a cooperative development program to demonstrate the potential of Allison Transmission’s sec ond- generation parallel hybrid electric drive EP-50 System in heavy vehicles. The objective of this particular program is to demonstrate the suitability of the EP-50 system, designed for inter-city bus applications, in a Light Armored Vehicle-III/ Interim Armored Vehicle (LAV III) and a Mack refuse hauler. This paper w ill describe how hybrid electric pr opulsion is a dual use technology, benefiting both the government and commercial industries. The US Army is in need of technologies that decrease emissions, increase fuel efficiency, and decrease operating costs, while at the same time, the commercial sectors are looking for new platforms and ways to reduce production costs. A joint venture between government and industry can satisfy both their needs and reduce overall costs. INTRODUCTION Fuel supplies for our ground forces constitute about 70% of the bulk tonnage moved to support a deployed unit. The US Army carries over 246,000 vehicles in their fleet of tactical vehicles to insure the proper support of the deployed units. It is the intent of the Army to alleviate some of this burden by investigating technologies that reduce the Army’s dependency on fuel resupply by 75%. Hybrid technology is one way to reduce the amount of fuel used. The Tank-Automotive Research Development Engineering Center (TARDEC) and the NAC have many hybrid electric drive programs. The NAC’s Wheel and Track Systems team is currently conducting three different hybrid electric programs for medium weight vehicles (14-20 tons). The main goal of the Wheel and Track Systems team is to look at a variety of hybrid technologies, on different platforms, which could be candidates for m ilitary gr ound vehicles. The current active demonstration programs include two series and one parallel electric drive propulsion system. One program is an effort between