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 reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2007 SAE International All rights reserved. No part of this publication m
3、ay 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: 724-776-4970 (outside USA)
4、 Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org J377 REV. DEC2007 SURFACE VEHICLE STANDARD Issued 1969-04 Revised 2007-12 Superseding J377 MAR2001 Vehicular Traffic Sound Signaling Devices (Horns) RATIONALE This revision of this standard incorporates requirements
5、for areas of the world where horns experience high or severe usage. The Combined Environment Test was also updated to more accurately reflect real world conditions. TABLE OF CONTENTS 1. SCOPEGENERAL. 3 1.1 Intended Usage and Life Expectation. 3 2. REFERENCES 3 2.1 Applicable Publications . 3 2.1.1 S
6、AE Publications. 4 2.1.2 AIAG Publication. 4 2.1.3 ANSI Publication . 4 2.1.4 ASTM Publication 4 2.1.5 ECE Publication 4 2.1.6 EEC Publication 4 2.1.7 IEC Publications 4 2.1.8 ISO Publications 5 2.1.9 USCAR Publication. 5 2.1.10 US Government Documents. 5 2.2 Related Publications . 5 2.2.1 SAE Publi
7、cation 5 2.2.2 ANSI Publication . 5 3. DEFINITIONS . 5 3.1 Sound Signaling Device 5 3.2 Horn Subsystem 6 3.3 Horn 6 3.4 Disk Horn 6 3.5 Trumpet Horn 6 3.6 Bracket 6 4. TEST ENVIRONMENT . 6 4.1 On-Vehicle 6 4.1.1 Test Equipment Defaults. 6 4.1.2 Test Environment Defaults 7 SAE J377 Revised DEC2007 -
8、2 - 4.2 Component Level 8 4.2.1 Test Equipment Defaults. 8 4.2.2 Test Environment Defaults 8 4.3 Test Samples 9 4.4 Failure Determination 9 5. ON VEHICLE PERFORMANCE REQUIREMENTS. 9 6. COMPONENT MECHANICAL REQUIREMENTS 9 6.1 Dimensional and Visual 9 6.2 Mounting . 9 6.3 Terminations . 10 6.4 Materia
9、ls 10 6.5 Recycleability 11 6.6 Serviceability/Adjustments 11 6.7 Identification 11 6.7.1 Customers Part Number 11 6.7.2 Date of Manufacture . 11 6.7.3 Source. 11 6.7.4 Regulatory Identification . 11 6.7.5 Frequency . 11 7. COMPONENT ELECTRICAL AND ACOUSTIC REQUIREMENTS. 11 7.1 Polarity, Connection
10、Sequence. 11 7.2 Operating Voltage Range . 11 7.3 Grounding, Insulation Resistance. 12 7.4 Parasitic Loads 12 7.5 Readiness, Response Time 12 7.6 Current 12 7.7 Fundamental Frequency. 12 7.8 Sound Pressure Level and Harmonics . 12 7.9 Variability. 13 7.10 Electromagnetic Compatibility. 13 8. COMPONE
11、NT ENVIRONMENTAL REQUIREMENTS 13 8.1 Temperature 13 8.2 Thermal Shock 13 8.3 Humidity 13 8.3.1 Humidity, Operating 13 8.3.2 Humidity, Non-Operating 14 8.4 Frost 14 8.5 Vibration 14 8.6 Shock/Drop . 14 8.6.1 Shock 15 8.6.2 Drop 15 8.7 Contaminants 15 8.8 Corrosion. 15 8.9 Dust. 16 8.10 Water Impingem
12、ent. 16 8.10.1 Simulated Rain Environment 16 8.10.2 High Pressure Washer 16 8.11 Water Immersion. 16 8.12 Altitude 16 8.13 Combined Environments. 16 8.14 High Usage . 17 8.15 Continuous Blow . 17 SAE J377 Revised DEC2007 - 3 - 9. VALIDATION. 17 9.1 Development Testing 17 9.1.1 Purpose. 17 9.2 Design
13、 Validation and Durability Testing 17 9.3 Annual Re-validation/Re-certification 18 10. RELIABILITY AND DURABILITY 18 11. QUALITY ASSURANCE . 18 12. AUTHORITY AND REVISION HISTORY . 18 12.1 Authority 18 13. NOTES 18 13.1 Marginal Indicia. 18 APPENDIX A - TEST MATRIX AND TEST PROFILES 19 APPENDIX B -
14、COMBINED ENVIRONMENT PROFILE 20 APPENDIX C - PREFERRED CONNECTOR 22 1. SCOPEGENERAL This SAE Standard establishes the minimum operational life, environmental requirements, and sound level output for electrically driven Vehicular Traffic Sound Signalling Devices (hereinafter referred to as Horns) on
15、new automotive vehicles. Test equipment, environment, and procedures are specified. 1.1 Intended Usage and Life Expectation The horns meeting this specification are intended to be used on automotive vehicles, in defined climatic conditions and environments. Any device functioning as a horn, is inten
16、ded to perform its function, to this specification for at least 10 years or 250 000 km (150 000 miles). Two levels of usage shall be defined: A Normal Usage; and B High Usage. For the purposes of this specification, Normal Usage (A) life shall be interpreted as: Nominal Duty50 000 actuations Chirp D
17、uty40 000 actuations Long Duty200 actuations Continuous Duty4.0 minutes (per section 8.14) These duty cycles are defined in Appendix B (figure B1): For purposes of this specification, High Usage (B) life shall be interpreted as Normal Usage (A) followed by an additional 450 000 Nominal Duty Actuatio
18、ns. These duty definitions shall be modified for Combined Environment Testing as shown in the Combined Environment section. 2. REFERENCES 2.1 Applicable Publications The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest is
19、sue shall apply. SAE J377 Revised DEC2007 - 4 - 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J184 Qualifying a Sound Data Acquisition System SAE J5
20、75 Test Methods and Equipment for Lighting Devices and Components for Use on Vehicles Less than 2032 mm in Overall Width 2.1.2 AIAG Publication Available from Automotive Industry Action Group, 26200 Lahser Road, Suite 200, Southfield, MI 48034-7100, Tel: 248-358-3570, www.aiag.org. AIAG QS9000 Quali
21、ty Systems 2.1.3 ANSI Publication Available from ANSI, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org. ANSI S1.4-1983 and S1.4A-1985 Specification for Sound Level Meters 2.1.4 ASTM Publication Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959
22、, Tel: 610-832-9585, www.astm.org. ASTM B117-85 Testing for Salt Spray (Fog) 2.1.5 ECE Publication Available from United Nations Economic Commission for Europe, Palais des Nations, CH-1211, Geneva 10, Switzerland, Tel: +41-0-22-917-12-34, www.unece.org. ECE Regulation R28 Uniform Provisions Concerni
23、ng the Approval of Audible Warning Devices and of Motor Vehicles with Regard to Their Audible Signals 2.1.6 EEC Publication Available from European Economic Community Council, Information and Documentation Centre, BREY 5/150, B-1049 Brussels, Belgium, Fax: +32-2-296-99-30, http:/ec.europa.eu/enterpr
24、ise/automotive/directives/vehicles/ EEC Directive of 70/388/EEC, 27 July 1970, Relating to Audible Warning Devices for Motor Vehicles 2.1.7 IEC Publications Available from International Electrotechnical Commission, 3, rue de Verambe, P.O. Box 131, 1211 Geneva 20, Switzerland, Tel: +41-22-919-02-11,
25、www.iec.ch. IEC Publication 60068-2-27 Basic Environmental Testing Procedures Part 2: Test Ea and Guidance: Shock IEC Publication 529: 1989 Degrees of Protection Provided by Enclosures (IP Code) IEC Publication 60068-2-64 Environmental Testing Part 2: Test Fh: Vibration, Braod-Band Random SAE J377 R
26、evised DEC2007 - 5 - IEC Publication 60651: 1979 Sound Level Meters IEC Publication 60942: 1988 Sound Calibrators 2.1.8 ISO Publications Available from ANSI, 25 West 43rd Street, New York, NY 10036-8002. ISO 10844: 1994 AcousticsTest surface for road vehicle noise measurements ISO 12103-1 Road vehic
27、lesTest dust for filter evaluationPart 1: Arizona test dust ISO 9001Quality Systems 2.1.9 USCAR Publication Available from USCAR, 1000 Town Center Drive, Suite 300, Southfield, MI 48075, Tel: 248-223-9000, www.uscar.org. USCAR Connector Drawing 150-S-002-A01 2.1.10 US Government Documents Available
28、from the Superintendent of Documents, U.S. Government Printing Office, Mail Stop: SSOP, Washington, DC 20402-9320. US EPA-40-CFR Ch1, Part 205 Test Surface US FMVSS 302 Flammability 2.2 Related Publications The following publications are provided for information purposes only and are not a required
29、part of this document. 2.2.1 SAE Publication Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE 951361 Paper from the SAE Noise provided the result is identified as having been
30、 corrected, the correction method is identified, and the observed data is provided. Ambient temperature shall be between 13 C and 30 C. If the temperature is outside this range the test may be conducted if agreed to by all parties. Measurements shall be made with the vehicle stationary and the engin
31、e running at idle. The engine shall have been running for 30 min prior to the test with no headlamp or other heavy electrical loads activated. For reference purposes the battery voltage shall be recorded before and after the test and shall be in the range of the vehicle manufacturers specification.
32、NOTE: The requirement to test with engine running differs from the engine off requirement of ECE R28. Under this requirement, all horns are tested at the vehicle level with the horn powered as it would be on the road, regardless of whether it is DC, AC, or air powered. It provides a more accurate re
33、presentation of how the horn will sound in actual usage, and makes the measurement independent of the nominal vehicle system voltage. Duration of the horn activation shall not exceed 5 s, with not less than 20 s between activations. The vehicle operator should be seated in/on the vehicle in normal o
34、perating position for a stationary vehicle. Enclosed vehicles should have the windows closed during the test. SAE J377 Revised DEC2007 - 8 - 4.2 Component Level 4.2.1 Test Equipment Defaults The following instrumentation defaults shall apply where applicable: Sound Levels shall be measured with a me
35、ter or measurement system that meets the requirements of IEC 60651. The meter shall be set for the A weighting scale and the Fast response. Measurement instruments, not otherwise specified, shall be accurate to one order of magnitude (1 decimal point) greater than the stated requirement. Measurement
36、 instruments must be calibrated to a recognized standard as often as manufacturer recommendations but not less than once per year. The power supply shall be capable of supplying a continuous output current of at least 200% of the nominal current for the quantity of units being tested simultaneously.
37、 Output regulation shall not allow voltage to deviate more than 1.0 V from zero to maximum load (including surges) and shall recover 63% of its maximum excursion within 5.0 ms. Ripple shall not exceed 100 mV peak-to-peak. 4.2.2 Test Environment Defaults Unless otherwise specified all tests shall be
38、run at 13.0 V DC 0.3 V DC. Source Resistance including all wiring to a “device under test” shall be not more than 0.1 Ohm. For single terminal, case grounded horns, the case ground path resistance must be included. For horns that have been designed to operate on a different voltage or with a differe
39、nt circuit resistance, the voltage and resistance specified by the vehicle manufacturer shall be used. Voltage measurements shall be made at, or within 80 mm, of the horn harness connector terminals. Ambient temperature shall be between 13 C and 30 C. Airflow up to 10 m/s is permitted. Production wi
40、ring and connections shall be used. Terminals shall be changed periodically to assure terminal wear does not affect test results. The horn shall be mounted with its production bracket to a sturdy base of mass at least 30 times the mass of the horn assembly. Mounting hardware and torque shall be cons
41、istent with the horn manufacturers recommendations. In the case of multiple horns mounted to a single bracket, each horn should be tested on its intended bracket with the other horn, but with only one horn connected. If necessary, individual horns may be rotated on the bracket such that their speaki
42、ng axes are pointing toward the measurement microphone, as long as such rotation does not adversely influence their operation. Alternatively a horn may be tested with the horn mounted on a standardized bracket defined by the horn manufacturer. Horns intended to be mounted to a bracket integral to th
43、e vehicle, shall be tested with the horn mounted on a standardized bracket defined by the horn manufacturer. Sound Pressure Level measurements shall be conducted in a “Sound Attenuation Chamber” that is substantially anechoic in the frequency range of 20 to 2000 Hz. The materials and dimensions of t
44、he chamber shall be such that the sound pressure level will decrease 6 dB(A) at each doubling distance between the horn and the microphone, or which has been calibrated to simulate a free field environment. SAE J377 Revised DEC2007 - 9 - The horn and microphone shall face each other along the axis o
45、f maximum sound level at a distance of 2.0 m 0.1 m. Unless otherwise specified, maximum time of activation shall be 3 s, with at least 20 s OFF between activations. Shorter off times may be used at the option of the horn manufacturer. 4.3 Test Samples Component Level Test Samples shall be selected f
46、rom normal production, at random from pieces that have been subjected to all normal processing and handling. Test Samples shall be allocated among the various tests as indicated in the test matrix (see Appendix A). Vehicle level tests shall be performed on vehicle(s) which are production intent in a
47、ll areas that might affect emitted sound pressure level, and with horns that are production qualified. 4.4 Failure Determination A component level test failure will be determined should any sample fail to meet the specification, regardless of age or accumulated actuations. Unless otherwise specified
48、 all test samples shall be checked for proper performance before and after each test segment, and after a complete test sequence. Performance shall be determined by a minimum of one (1) actuation of 15 s ON and 15 s OFF, and a minimum of three (3) actuations of 1 second ON and 1 s OFF. Sound Pressur
49、e Level shall be measured during any of the 1 s actuations. Failure shall be defined as a reduction in sound pressure level from the as-built condition of greater than 5 dB(A), a change in fundamental frequency which results in the unit being outside its manufacturing tolerance by more than 20 Hz, or a significant change in perceived tone quality. A vehicle level test failure will be determined should the vehicle fail t
