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 there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this p
3、ublication 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: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1854_201309 SURFACE VEHICLE RECOMMENDED PRACTICE J1854 SEP2013 Issued 1988-06 Re
5、affirmed 2013-09 Superseding J1854 SEP2003 Brake Force Distribution Performance Guide - Truck and Bus RATIONALE J1854 has been reaffirmed to comply with the SAE five-year review policy. ForewordThis Document has been changed to reflect a 5-year review and update.The performance guidelines specified
6、in this SAE Recommended Practice represent the accumulation ofinformation available from investigations of the brake system performance of air-braked towing, truck-tractors,truck-trailers, converter dollies, and combinations of these types of vehicles. Because these guidelines are basedon data limit
7、ed by voluntary submissions of equipment and information and testing was limited to specificconditions, they may not necessarily represent optimum performance for all vehicles under all operatingconditions. Therefore, the values specified in this document are target values; all targets are mean valu
8、es exceptfor the one minimum value specified.1. ScopeThis SAE Recommended Practice establishes performance guidelines for the threshold pressure andbrake force output of the brakes on the axles of air-braked towing trucks, truck-tractors, truck-trailers, andconverter dollies with GVWRs over 4536 kg
9、(10 000 lb) designed to be used on the highway in combinationwith other air-braked vehicles of this type in commercial operations.1.1 PurposeThe purpose of this document is to establish target threshold pressures and brake force outputswith reference to brake application pressures as measured at the
10、 rear control line gladhand of truck-tractorsand towing trucks, the front control line gladhand of non-towing trailers, and the front and rear control linegladhand of towing trailers and dollies.2. References2.1 Applicable PublicationsThe following publications form a part of this specification to t
11、he extent specifiedherein. The latest issue of SAE publications shall apply.2.1.1 SAE PUBLICATIONAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.SAE J1505Brake Force Distribution Test ProcedureTruck & Bus2.1.2 FMVSS PUBLICATIONAvailable from the Superintendent of Documents, U.
12、S. Government Printing Office,Mail Stop: SSOP, Washington, DC 20402-9320.49 CFR 571.121Brake PerformanceAir Brake Systems3. Test ProcedureTests to determine the brake force output and threshold pressure of vehicles to be used insingle unit or combinations and the brake force distribution of single u
13、nit or combination vehicles shall beconducted in accordance with SAE J1505. The brakes of newly manufactured vehicles built to be used insingle unit or combinations shall be burnished prior to testing according to the burnish procedure specified inSAE J1626, Section 11 or FMVSS 121, Section 6.1.8.4.
14、 Performance Guidelines4.1 Newly Manufactured Vehicles Used in Single Unit Trucks/Tractor/Trailer or Truck/Trailer Combinations4.2 Threshold Pressure (Average of the brake apply and release pressures measured as specified in 6.3 of SAEJ1505)41 kPa (6 psi)4.3 Brake Force Output at 276 kPa (40 psi) as
15、 specified in 7.5 of SAE J15054.3.1 TRACTOR OR TOWING TRUCK STEER AXLES0.20 x GAWR (Minimum)4.3.2 Single axles with GAWRs of 7260 to 9070 kg (16 000 to 20 000 lb)20 460 N (4600 lb)4.3.3 Single axles with GAWRs of 9072.3 to 13 154 kg (20 001 to 29 000 lb)20 460 N (4600 lb)4.3.4 Axles of an “axle syst
16、em“ whose GAWR divided by the number of axles is from 7260 to 9070 kg (16 000 to20 000 lb)20 460 N (4600 lb).4.3.5 Axles of an “axle system” whose GAWR divided by the number of axles is greater than 9070.3 kg(20 001 lb)20 460 N (4600 lb)5. Notes5.1 Marginal IndiciaThe change bar (l) located in the l
17、eft margin is for the convenience of the user in locatingareas where technical revisions have been made to the previous issue of the report. An (R) symbol to the leftof the document title indicates a complete revision of the report.PREPARED BY THE SAE TRUCK AND BUS BRAKE SYSTEMS SUBCOMMITTEE OF THE SAE TRUCK AND BUS BRAKE COMMITTEESAE J1854 Reaffirmed SEP2013 Page 2 of 2_
