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 2017 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:/standards.sae.org/J2591_201705 SURFACE VEHICLE RECOMMENDED PRACTICE J2591 MAY2017 Issued 2002-09 Revised 2017-05
5、Superseding J2591 NOV2008 Limited Adaptive Forward Lighting System RATIONALE Title, Scope Added term “Limited” to document title and scope to further distinguish this document from SAE J2838 Full Adaptive Forward Lighting Systems. 2.1, 2.2 Updated format wording. 2.1.1, 2.2.1 Moved SAE J575 to Appli
6、cable Documents section and revise title. 2.2.1, 2.2.2, 2.2.3, 2.2.4 Updated and corrected reference titles. 3.5 Removed references to variables that can influence the beam pattern, since these variables are not addressed in the document. 4 Changed “after” to “before” to be consistent with SAE J759.
7、 5.1.2.4, 5.1.2.6 Updated requirements to address systems where some of the light in the nominal beam pattern is actively redirected. This allowance was addressed in NHTSA Docket No. NHTSA0213957 and therefore was included in this recommended practice. 6.1.4, 6.1.5 Renumbered sections. 6.3.1.1, 6.3.
8、1.2, 6.3.6 Wording change for clarity. SAE INTERNATIONAL J2591 MAY2017 Page 2 of 8 TABLE OF CONTENTS 1. SCOPE 3 2. REFERENCES 3 2.1 Applicable Documents 3 2.1.1 SAE Publications . 3 2.2 Related Documents . 3 3. DEFINITIONS . 4 4. LIGHTING IDENTIFICATION CODE 5 5. TESTS . 5 6. REQUIREMENTS . 6 6.1 Te
9、st Requirements 6 6.2 Lamp Aim Requirements. 6 6.3 Vehicle System Requirements 6 6.3.1 Operation 6 6.3.2 Installation . 7 6.3.3 Vertical Lamp Swivel . 7 6.3.4 Horizontal Lamp Swivel. 7 6.3.5 Vehicle Aim . 8 6.3.6 System Malfunction Provisions . 8 7. GUIDELINES 8 8. NOTES 8 8.1 Revision Indicator 8 F
10、IGURE 1 ADAPTIVE BEAM CONTRIBUTOR SPACING HEADLAMP EXAMPLE . 7 FIGURE 2 MAXIMUM HORIZONTAL SWIVEL ANGLE. 8 SAE INTERNATIONAL J2591 MAY2017 Page 3 of 8 1. SCOPE This SAE Recommended Practice applies to motor vehicle Forward Illumination Devices which incorporate limited adaptive beam pattern capabili
11、ties. This document is to be used in conjunction with other forward lighting standards and/or recommended practices which define the base beam procedures, requirements, and guidelines. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent s
12、pecified herein. Unless otherwise specified, the latest issue of SAE publications shall apply. 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 +1 724-776-4970 (outside USA), www.sae.org. SAE J575
13、 Test Methods and Equipment for Lighting Devices for Use on Vehicles Less than 2032 mm in Overall Width SAE J578 Color Specification SAE J599 Lighting Inspection Code SAE J759 Lighting Identification Code 2.2 Related Documents The following publications are provided for information purposes only and
14、 are not a required part of this SAE Technical Report. 2.2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. SAE J565 Semiautomatic Headlamp Beam Switching D
15、evices SAE J581 Auxiliary High Beam Lamps SAE J583 Front Fog Lamp SAE J852 Front Cornering Lamps for Use on Motor Vehicles SAE J1383 Performance Requirements for Motor Vehicle Headlamps SAE J2838 Full Adaptive Forward Lighting Systems 2.2.2 FMVSS Publication Available from the Superintendent of Docu
16、ments, U. S. Government Printing Office, Mail Stop: SSOP, Washington, DC 20402-9320 or at www.ecfr.gov. CFR Title 49 Part 571.108 Lamps, Reflective Devices and Associated Equipment (FMVSS 108) CFR Title 49 Part 571.564 Replaceable Light Source Information (FMVSS 108) SAE INTERNATIONAL J2591 MAY2017
17、Page 4 of 8 2.2.3 CMVSS Publication Available from Transport Canada, Motor Vehicle Safety Directorate, Ottawa, Ontario K1A 0N5, Canada, or at: http:/www.tc.gc.ca/eng/acts-regulations/regulations-crc-c1038.htm Canada Motor Vehicle Safety Standard 108 Lighting System and Retroreflective Devices 2.2.4
18、United Nations Publications Available from United Nations Economic Commission for Europe Information Office, Palais des Nations, CH-1211, Geneva 10, Switzerland, Tel: +41-0-22-917-12-34, http:/www.unece.org/trans/main/wp29/wp29regs.html. UNECE Regulation No. 123 Uniform Provisions Concerning the App
19、roval of Adaptive Front-Lighting Systems (AFS) for Motor Vehicles UNECE Regulation No. 48 Uniform provisions concerning the approval of vehicles with regard to the installation of lighting and light-signalling devices UNECE Regulation No. 112 Uniform Provisions Concerning the Approval of Motor Vehic
20、le Headlamps Emitting an Asymmetrical Passing Beam or a Driving Beam or Both and Equipped with Filament Lamps and/or Light-Emitting Diode (LED) modules UNECE Regulation No. 98 Uniform Provisions Concerning the Approval of Motor Vehicle Headlamps Equipped with Gas-Discharge Light Sources TRANS-WP29-G
21、RE-48-inf30e AFS History and Scientific Backup TRANS-WP29-GRE-48-inf28e Adaptive Front Lighting System (AFS) 3. DEFINITIONS 3.1 BASE BEAM A lamps beam pattern that meets the lighting function standard or recommended practice without adaptive functionality. 3.2 ADAPTIVE BEAM CONTRIBUTOR A component o
22、f a lamp designed to add or subtract light from the base beam to provide adaptive capability. 3.3 AXIS OF REFERENCE The characteristic axis of the beam used as the direction of reference (H=0, V=0) for photometric measurement angles. 3.4 NOMINAL POSITION A lamp position where its axis of reference c
23、oincident with the vehicle longitudinal axis for front mounted lamps and perpendicular for side mounted lamps. 3.5 ADAPTIVE FORWARD LIGHTING SYSTEM (AFS) A forward lighting system intended to adapt a forward lighting devices beam pattern to improve driver visibility. The system is comprised of one o
24、r more forward lighting devices and the entirety of components required to control and operate the devices. 3.6 SWIVEL Automatic horizontal and/or vertical movement of the lamps axis of reference relative to the vehicle longitudinal axis for the purpose of actively directing the beam pattern for imp
25、roved visibility under driving conditions. SAE INTERNATIONAL J2591 MAY2017 Page 5 of 8 4. LIGHTING IDENTIFICATION CODE A lamp with adaptive functionality may be identified by their original function(s) in accordance with SAE J759. If marked, the lamp shall be marked “X” directly before the original
26、function(s) marking. 5. TESTS 5.1 All test procedures required by the applicable lighting functions standard or recommended practice shall be performed. In addition, the following tests shall be included, if applicable. 5.1.1 Vibration Test If the vibration test is required by the standard or recomm
27、ended practice for the specified device, any components with mechanical movement for adaptive functionality shall be at their nominal position. 5.1.2 Photometry Test 5.1.2.1 The lamp to be tested shall be mounted on a fixture as specified in the standard or recommended practice for each device. Moun
28、ting hardware, the test stand, and components shall be those necessary to operate the lamp over all intended adaptive conditions. 5.1.2.2 The lamp to be tested shall be located on the photometer axis as specified in the standard or recommended practice for each device positioned at its nominal posit
29、ion. The lamp aim shall not be adjusted during the test other than for any re-aim allowed by the lighting functions standard or recommended practice. 5.1.2.3 The base beam for the lamp shall be tested with the lamps axis of reference positioned according to 5.1.2.2. 5.1.2.4 If the base beam swivels
30、and/or if some of the light in the beam pattern is actively redirected, such that the base beam pattern is changed, the lamp shall be additionally tested to the intended maximum range of vertical and/or horizontal movement and to the extents of the base beam pattern changes. If any position(s) withi
31、n the movement range of the lamp along with any beam pattern changes are expected to prevent the lamp from meeting the photometry requirements, these additional positions and/or beam pattern changes shall also be tested. When the axis of reference for the lamp is moved relative to the vehicle longit
32、udinal axis, the goniometer shall be compensated to locate the axis of reference to H=0 and V=0. 5.1.2.5 If adaptive beam contributor(s) are utilized with a non-swiveling base beam, the base beam with the contributor(s) shall be additionally tested in each operational mode. If any adaptive beam cont
33、ributor is designed to swivel, the non-swiveling base beam with the contributor(s) at their extreme positions shall be additionally tested in each operational mode. If any position(s) within the movement range of the adaptive beam contributor is expected to prevent the lamp from meeting the photomet
34、ry requirements, these additional positions shall also be tested. 5.1.2.6 If the base beam swivels and/or some of the light in the beam pattern is actively redirected, such that the base beam pattern is changed, and adaptive beam contributor(s) are utilized, the lamp shall be additionally tested wit
35、h each adaptive beam contributor(s) activated and positioned according to 5.1.2.5 with the base beams axis of reference positioned as intended for each operational mode according to 5.1.2.4. 5.1.3 Heat Test If light source(s) are required to be activated during heat testing, the following tests shal
36、l apply. 5.1.3.1 Adaptive beam contributor(s) that are only energized during turns are to be energized at the rate of 3 minutes on and 12 minutes off with the function being tested for each operational mode. 5.1.3.2 Adaptive beam contributor(s) that do not comply with 5.1.3.1 shall be energized with
37、 the function being tested as specified by the lighting functions standard or recommended practice. SAE INTERNATIONAL J2591 MAY2017 Page 6 of 8 5.1.3.3 Adaptive beam contributors that are only energized independently shall be energized independently during heat testing. 5.1.3.4 Any swiveling compone
38、nt(s) shall be positioned at their nominal position. 5.1.4 Color Test SAE J578 applies for this standard. 6. REQUIREMENTS 6.1 Test Requirements The following requirements are in addition to those specified in the standard or recommended practice for each applicable device. 6.1.1 Vibration Vibration
39、requirements outlined in each lighting functions standard or recommended practice shall be met when tested according to 5.1.1. 6.1.2 Photometry Photometric requirements outlined as specified in the standard or recommended practice applicable to the device shall be met with the device in all intended
40、 positions and/or adaptive modes specified in 5.1.2. 6.1.3 Heat Heat requirements outlined in each lighting functions standard or recommended practice shall be met when tested according to 5.1.3. 6.1.4 Color 6.1.4.1 The color of the light from the base beam shall be white within the limits specified
41、 in SAE J578. 6.1.4.2 The color of each adaptive beam contributor shall be white within the limits specified in SAE J578. 6.2 Lamp Aim Requirements If aiming provisions are specified in the standard or recommended practice for the applicable device, all adaptive beam contributors shall comply with t
42、he provisions. Adaptive beam contributors cannot be aimed independently of the base beam. 6.3 Vehicle System Requirements 6.3.1 Operation 6.3.1.1 Deactivation A means shall be provided for the driver to deactivate the adaptive functionality of a lamp which swivels such that it provides the ability t
43、o static aim the lamp according to SAE J599. The lamp beam pattern shall then return to its base beam positioned at its nominal position. This may be accomplished by deactivating the adaptive functionality when the vehicle ignition switch is in the “off” position or by some other switching mechanism
44、 available to the driver. 6.3.1.2 A means for the driver to deactivate the adaptive functionality of a lamp other than defined in 6.3.1.1 is allowed. The lamp shall then return to its base beam. 6.3.1.3 Other than deactivation, AFS control shall be automatic without additional driver control. SAE IN
45、TERNATIONAL J2591 MAY2017 Page 7 of 8 6.3.2 Installation 6.3.2.1 Adaptive beam contributors that are symmetrically mounted about the vertical centerline of the vehicle at the same height and only illuminated simultaneously shall be mounted such that their lighted edges are within 200 mm horizontally
46、 and 400 mm vertically of the nearest illuminated adaptive beam contributor or the base beam (see Figure 1). 6.3.2.2 Beam contributors that do not comply with 6.3.2.1 shall be mounted such that their lighted edge is within 140 mm horizontally and 400 mm vertically of the lighted edge of the nearest
47、adaptive beam contributor or the base beam (see Figure 1). 20 0 m m 14 0 m m 40 0 m m B as e B ea m A s y m m etri c al l y ac ti v ate d ad ap ti v e be am c on tr i bu tor S y m m etri c al l y ac ti v ate d ad ap ti v e beam c on tr i bu tor Hea d la m p A sse m b ly Figure 1 - Adaptive beam cont
48、ributor spacing headlamp example 6.3.3 Vertical Lamp Swivel 6.3.3.1 The axis of reference for the lamp shall not automatically raise vertically beyond such limit that the maximum photometric values above the H-H line are exceeded when the lamp is tested in its raised state along the nominal vehicle
49、longitudinal axis for forward mounted lamps and perpendicular for side mounted lamps. 6.3.3.2 Automatic vertical displacement that would not comply with 6.3.3.1 is allowed if provisions are included to automatically lower the lamps axis of reference to comply with 6.3.1.1 when opposing traffic is present. 6.3.3.3 Automatic vertical displacement that would not comply with 6.3.3.1 is all
