400 Commonwealth Drive, Warrendale, PA 15096-0001 U.S.A. Tel: (724) 776-4841 Fax: (724) 776-5760 Web: www.sae.orgSAE TECHNICAL PAPER SERIES 2004-01-0064 Development of New-Generation Hybrid System THS II - Drastic Improvement of Power Performance and Fuel Economy Koichiro Muta, Makoto Yamazaki and Junji Tokieda Toyota Motor Corp. Reprinted From: Advanced H ybrid Vehicle Powertrains 2004 (SP-1833) 2004 SAE World Congress Detroit, Michigan March 8-11, 2004 All 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: 724-772-4891Tel: 724-772-4028 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.org ISBN 0-7680-1319-4 Copyright © 2004 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 the manuscript or a 300 word abstract of a proposed manuscript to: Secretary, Engineering Meetings Board, SAE. Printed in USA 2004-01-0064 Development of New-Generation Hybrid System THS II - Drastic Improvement of Power Performance and Fuel Economy Koichiro Muta, Makoto Yamazaki and Junji Tokieda Toyota Motor Corp. Copyright © 2004 SAE International