The Engineering Society =,or ,tivancing MOMY --bnd sea ~ir and spaceA INTERNATIONAL^ 400 COMMONWEALTH DRIVE, WARRENDALE, PA 15096-0001 U.S.A. Proposal of New Criteria and Test Methods for the Dynamic Performance of ATF Kenichi Yoshizawa, Teruo Akashi and Tatsuo Yoshioka Toyota Motor Corp. MAR 71940 SM LIBRARY International Congress and Exposition Detroit, Michigan February 26 - March 2,1990 Downloaded from SAE International by University of British Columbia, Wednesday, September 26, 2018The appearance of the lSSN code at the bottom of this page indicates SAE's consent that copies of the paper may be made for personal or internal use of specific clients. This consent is given on the condition, however, that the copier pay a $5.00 per article copy fee through the Copyright Clearance Center, Inc., Operations Center, 27 Congress St., Salem, MA 01 970for copying beyond that permitted by Sedions 107or 108of the U.S. Copyright Law. This consent does not extend to other kinds of copying such as copying for general distribution, for advertising or promotional purposes, for creating new collective works, or for resale. SAE routinely stocks printed papers for a period of three years following date of publication. Direct your orders to'SAE Customer Service Department. To obtain quantity reprint rates, permission to reprint a technical paper or permission to use copyrighted SAE publications in other works, contact the SAE Publications Group. - -- - - -- --- - - - -. -- - - - -- -- -- - - - -- - - - -. -- - - . -- - - .= All SAE p&Wm ive =--.: .- . - -- - - - .--- -- abstracted endindexedin - - - - --- = -----= fM SAEGbMMobcIitvDal~. = =-= === 3 -='-==- -- ---- --=-= -- -- .. -- - - - - ' %. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior writ- ten permission of the publisher. ISSN 0148-7191 Copyright 1990 Society of Automotive Engineers, Inc. Positions and opinions advanced in this paper are those of the Persons wishing to submit papers to be considered for presen- author(s) and not necessarily those of SAE. The author issolely tation or publication through SAE should send the manuscript responsible for the content of the paper. A process is available or a 300 word abstract of a proposed manuscript to: Secretary, by which discussions will be printed with the paper if it is Engineering Activity Board, SAE. published in SAE Transactions. For permission to publish this paper in full or in part, contact the SAE Publications Division. Printed in USA Downloaded from SAE International by University of British Columbia, Wednesday, September 26, 2018Proposal of New Criteria and Test Methods for the Dynamic Performance of ATF Kenichi Yoshizawa, Teruo Akashi and Tatsuo Yoshioka Toyota Motor Corp. ABSTRACT Recently in the world, many modifications and improvements have been taking place in automatic transmission fluid (ATE) in order to get more excellent performance and durability of automatic transmission. The most important criterion for the improvement of ATF is a superior friction characteristic. To consider the performance of ATF, we have investigated the correlation of criteria between actual vehicle tests and bench- scale tests (e.g. SAEIl2 Friction Test). And it was proved that conventional criteria and test methods for bench-scale tests were not enough to give best prediction of actual vehicle performance especially for shift quality, anti-shudder performance and static torque capacity which were regarded as of major importance for the development. Based on the findings, we have considered new criteria and test methods for the frictional characteristics, and specific requirements for ATF have been proposed from the standpoint of actual vehicle performance. AUTOMOBILE TECHNOLOGY has remarkably been developed in recent years because customer needs have been diversified