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 2003-01-0086 Energy Management Strategy and Parametric Design for Hybrid Electric Military Vehicle Chu Liang, Wang Weihua and Wang Qingnian Department of Automotive E ngineering, Faculty of E ngineering, Jilin University Reprinted From: Advanced H ybrid Vehicle Powertrains 2003 (SP-1750) 2003 SAE World Congress Detroit, Michigan March 3-6, 2003Downloaded from SAE International by Univ of California Berkeley, Sunday, August 05, 2018All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise,without the prior written permission of SAE. For permission and licensing requests contact: SAE Permissions 400 Commonwealth DriveWarrendale, PA 15096-0001-USAEmail: permissions@sae.orgFax: 724-772-4028Tel: 724-772-4891 For multiple print copies contact: SAE Customer ServiceTel: 877-606-7323 (inside USA and Canada)Tel: 724-776-4970 (outside USA)Fax: 724-776-1615Email: Customer Service@sae.org ISSN 0148-7191Copyright © 2003 SAE International Positions and opinions advanced in this paper are those of the author(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 pap er if it is publishe d in SAE Transactions. Persons wishing to submit papers to be considered for presentation or publication by SAE should send themanuscript or a 300 word abstract of a proposed manuscript to: Secretary, Engineering Meetings Board, SAE. Printed in USADownloaded from SAE International by Univ of California Berkeley, Sunday, August 05, 2018ABSTRACT The goal of Military HEV Program organized by military industry is to develop a hybr id electric military bus prototype, which achieves higher fuel economy than that of conventional bus running in city. Moreover, it can be used as civil public transit bus . The series configuration of power train is employed fo r hybrid electric military vehicle. The energy management strategy and control algorithm is presented, whic h can control the output of engine and motor to satisfy the requirement of propelling power, regulate engine operation points within high efficient area, and maintain SOC at reasonable level without charging outside. Method and assessment criteria of parametric design for series HEV power train is presented to determine specification of power train targeting higher fuel economy. Based on the energy management strategy and parametric design the development of control syst em and integration of HEV power train. INTRODUCTION The goal of Military HEV Program organized by military industry is to develop a hybr id electric military bus prototype, which achieves higher fuel economy than that of convention running in city. Moreover, it can be used as civil public transit bus. Either parallel or serial configuration can achieve mu ch higher fuel economy. In the view of energy efficiency the parallel has more advantage over the serial. But Investigation and research results indicated that a large percentage of heave duty HEV prototype or production are employed serial configuration as the advantage of flexible layout, simple constitution, high availability of electric energy, being easier to control and production develop than parallel. According to requirement of program and feasibility study results it is come to the conclusion that serial configuration shown as Fig.1 is more appropriate for heavy-duty military bus. T herefore two major concern of development is energy management strategy and parametric design. For serial HEV power train the engine on-off strategy is usually employed as ener gy management strategy. According the strategy engine turn on to provide constant charge pow