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/J852_201707 SURFACE VEHICLE RECOMMENDED PRACTICE J852 JUL2017 Issued 1963-04 Revised 2017-07 Su
5、perseding J852 MAR2009 Front Cornering Lamps for Use on Motor Vehicles RATIONALE Paragraph 2.2 reference documents are added for user information and to match current document practices of the committee. Paragraph 6.2 color requirement is revised to only allow white light. Yellow color light is gene
6、rally no longer acceptable for road illumination devices. Section 7 guidelines are restructured and revised. In order to increase global harmonization of specifications, the mounting height upper limit of 760 mm recommended in the guidelines section was modified to 900 mm as measured to the apparent
7、 surface upper edge, permitting greater overlap to the requirements of UN-R48 Installation of Lighting and Light-Signalling Devices. Additional restrictions to the upper height limit relative to the lower beam are established. The lower limit is kept the same by referring to the height measured to t
8、he reference axis. The user is cautioned to design appropriately for their intended markets. Figure 1 format is revised to match the SAE Lighting Standards convention to show minimum and maximum candela values. No photometric requirement has been changed. 1. SCOPE This SAE Recommended Practice provi
9、des test procedures, performance requirements, and guidelines for front cornering lamps intended for use on motor vehicles. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue
10、 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 J567 Light Source Retention System SAE J576 Plastic Material or M
11、aterials for Use in Optical Parts Such as Lenses and Reflex Reflectors of Motor Vehicle Lighting Devices SAE INTERNATIONAL J852 JUL2017 Page 2 of 6 SAE J578 Color Specification SAE J759 Lighting Identification Code 2.2 Related Publications The following publications are provided for information purp
12、oses only and 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 J2442 Harmonized Provisions for
13、 Installation of Exterior Lamps and Retro-Reflecting Devices on Road Vehicles Except Motorcycles 2.2.2 NHTSA Publications Available from the Superintendent of Documents, U.S. Government Printing Office, Mail Stop: SSOP, Washington, DC 20402-9320 or at www.ecfr.gov. Federal Motor Vehicle Safety Stand
14、ard 49CFR 571.108 2.2.3 Transport Canada Publications Transport Canada documents are available from Transport Canada, Tower C, Place de Ville, 330 Sparks Street Ottawa, Ontario K1A 0N5, Tel: 1-800-305-2059, www.tc.gc.ca. CMVSS 108 Canadian Motor Vehicle Safety Standard for Exterior Lighting Technica
15、l Standards Document No. 108 2.2.4 UNECE 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. 48 Uniform Prov
16、isions Concerning the Approval of Vehicles with Regard to the Installation of Lighting and Light-Signalling Devices UNECE Regulation No. 119 Uniform Provisions Concerning the Approval of Cornering Lamps for Power Driven Vehicles 3. DEFINITIONS 3.1 FRONT CORNERING LAMPS Steady operating lamps used to
17、 supplement the headlamps by providing additional illumination in the direction of turn. They may be used independent of the turn signal to ease maneuvering at very low speeds. 4. IDENTIFICATION CODE DESIGNATION Front cornering lamps meeting the performance requirements of this document may be ident
18、ified by the code K in accordance with SAE J759. SAE INTERNATIONAL J852 JUL2017 Page 3 of 6 5. TESTS 5.1 SAE J575 is a part of this document. The following tests are applicable with the modifications as indicated. 5.1.1 Vibration Test 5.1.2 Moisture Test 5.1.3 Dust Exposure Test 5.1.4 Corrosion Test
19、 5.1.5 Photometry Test In addition to the test procedures in SAE J575, the following apply: 5.1.5.1 Photometry measurements shall be made with the light source of the lamp at least 3 m from the photometer. The H-V axis shall be taken as the horizontal line through the light source and perpendicular
20、to the longitudinal axis of the vehicle. 5.1.6 Warpage Test on Device with Plastic Components 5.2 Color Test SAE J578 is a part of this document. 5.3 Plastic Materials SAE J576 is a part of this document. 6. REQUIREMENTS 6.1 Performance Requirements A device tested in accordance with the test proced
21、ure specified in Section 5 shall meet the following requirements: 6.1.1 Vibration SAE J575. 6.1.2 Moisture SAE J575. 6.1.3 Dust Exposure SAE J575. 6.1.4 Corrosion SAE J575. 6.1.5 Photometry SAE J575. The lamp shall be designed to conform to the photometry requirements contained in Figure 1. NOTE: Te
22、st points shown are for a lamp mounted on the left side of the vehicle - L and R designations in Figure 1 should be reversed for a lamp mounted on the right side of the vehicle. See Figure 2 for Test Point Orientation. SAE INTERNATIONAL J852 JUL2017 Page 4 of 6 6.1.6 Warpage SAE J575. 6.2 Color Requ
23、irements The color of the light from a front cornering lamp shall be white as specified in SAE J578. 6.3 Material Requirements Plastic materials used in optical parts shall meet the requirements of SAE J576. 7. GUIDELINES The following guidelines apply to front cornering lamps as used on motor vehic
24、les and should not be considered part of the requirements. 7.1 Operation 7.1.1 The front cornering lamps are intended for use only when the headlamps are operational. 7.1.2 Cornering lamp activation should coincide with turn signal activation to provide illumination in the direction of the intended
25、turn. 7.1.3 Cornering lamps may be deactivated at higher vehicle speeds (e.g., lane change maneuver) or while stopped to avoid discomfort to other road users. 7.1.4 Cornering lamps may be activated by steering angle input. 7.1.5 Both cornering lamps may be activated independently of turn signal or s
26、teering angle while the backup lamp is activated. 7.2 Location Requirements 7.2.1 The mounting height of the front cornering lamp reference axis should be no lower than 305 mm above the ground as measured on an unladen vehicle. The uppermost point of the effective projected luminous lens area in the
27、 direction of the reference axis should be no higher than 900 mm above the ground as measured on an unladen vehicle. 7.2.2 No part of the cornering lamp effective projected luminous lens area in the direction of the reference axis shall be higher than the highest point of the effective projected lum
28、inous lens area of the lower beam headlamp. 7.2.3 The optical center of the cornering lamp should be no further rearward than 1000 mm from the front of the vehicle. 7.3 For requirements and gauges to be used in socket designs, refer to SAE J567. SAE INTERNATIONAL J852 JUL2017 Page 5 of 6 1. Values s
29、hown in black (bold) denote minimum cd values. Values shown in red (bold italics) denote maximum cd values. 2. A tolerance of 0.25 in location is allowed at any test points or lines. 3. A scan shall be performed in Zone 1 in 1 increments both horizontally and vertically. If any point exceeds 125 cd
30、during the scan, a maximum of 500 cd is permissible if contained within a 2 conical angle. 4. All-line scans are to be performed on lines 1,2, 3, and 4 for maximum cd. Figure 1 - Photometric requirements luminous intensity (cd) SAE INTERNATIONAL J852 JUL2017 Page 6 of 6 Figure 2 - Test point orienta
31、tion 8. NOTES 8.1 Revision Indicator A change bar (I) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE SIGNALING AND MARKING DEVICES STDS COMMITTEE
