SAE J2317-2002 Tamper Resistance for Adjustable Parameters on Diesel Fuel Injection Pumps.pdf
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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2002 Society of Automotive Engineers, Inc. All rights reserved. No part of
3、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. TO PLACE A DOCUMENT ORDER:Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4
4、970 (outside USA) Fax: 724-776-0790 Email: custsvcsae.org SAE WEB ADDRESS:http:/www.sae.org SURFACE VEHICLE RECOMMENDED PRACTICE J2317 REAF. SEP2002 Issued1996-08 Reaffirmed2002-09 Superseding J2317 AUG96 Tamper Resistance for Adjustable Parameters on Diesel Fuel Injection Pumps ForewordEngine exhau
5、st emission standards and test procedures enforced by various regulatory agencies has resulted in in-use emissions testing of certain vehicles or engines. Such testing has revealed that some diesel vehicles failing the smoke opacity test had adjustable parameters tampered with by the owner or an age
6、nt of the owner. To avoid non-compliance of an engines exhaust emissions due to tampering, there have been various regulations developed designed to assure that the adjustable parameters which affect exhaust emissions will remain in-use within the original equipment manufacturers intended settings.
7、It has been recognized that the impetus for developing designs that offer adequate tamper-resistance is with the manufacturer of the fuel injection pump (FIP). This SAE Recommended Practice is developed by the standards committee representing the interests of diesel fuel injection equipment (FIE) ma
8、nufacturers, engine manufacturers, and the FIE service industry. The purpose of this document is to offer some design proposals which can be standardized in the FIE industry, are cost effective, and allow for servicing to be accomplished with a minimum of obstruction. The design proposals contained
9、herein are designed in anticipation of approval by, specifically, the U.S. Environmental Protection Agency and the California Air Resources Board as to their being effective in discouraging tampering attempts and that the listing of applicable adjustable parameters is appropriate. Described herein a
10、re designs which may be proprietary to the manufacturer and protected by patents. Information on the sources of fasteners shown can be obtained from SAE. 1.ScopeThis SAE Recommended Practice defines a guideline for the fuel injection pump designer to select appropriate fastener designs which are con
11、sidered to be tamper-resistant. It applies to fuel injection pumps used on diesel engines. 2.References 2.1Applicable PublicationThe following publication forms a part of this specification to the extent specified herein. 2.1.1FEDERAL REGULATIONAvailable from the Superintendent of Documents, U.S. Go
12、vernment Printing Office, Washington, DC 20402. Code of Federal Regulations, 40 CFR 86-090-22e SAE J2317 Reaffirmed SEP2002 -2- 3.Definitions 3.1Tamper-ResistanceThe definition of this term is found in 40 CFR 86-090-22e. 4.Applicable FeaturesThe following lists the features of an injection pump whic
13、h may require tamper- resistance. Excluded from the list is low idle and high idle adjustments. These features are excluded because (a) it is unlikely that an owner would knowingly tamper with these settings beyond that which may be necessary for the normal resettings in use, (b) the changing of the
14、se settings from the factory settings do not generally result in significant exhaust emissions non-compliance, and (c) after sale in-use resetting of these features is often required for application adaptability and considered part of normal use. 4.1Fuel SettingAn adjustment which can alter the fuel
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