Browse Topic: Exterior lighting

Items (980)
Find
Thermal Management of An Automotive Headlamp2024-26-028601/16/2024
These days, the use of virtual simulations through Computation Fluid Dynamics (CFD) methodology is increasing exponentially during the development phase of an automotive headlamp. Thereupon, the automotive industries are becoming competent enough to build an ingenious and creative design with optimal performance within the coherent time. Considerable amount of heat is generated inside the headlamp when it is switched on for a longer time. Hence it becomes vital to reduce the risks if any during the development phase by providing an adequate thermal management strategy within the headlamp. The present study conducted an experimental analysis on an automotive headlamp to determine its thermal characteristics and behavior. Numerical analysis was also performed to determine the airflow and temperature distributions within a headlamp. This study also focuses on finding the main hotspot regions over the headlamp through virtual simulations. The methodology shows a consensus with the
Kolhe, Shailesh Madhukar
Design methodology for avoiding condensation in automotive head lamps2024-26-008301/16/2024
One of the important aspect to consider at the design stage is the condensation of water vapor inside the lighting system, under particular weather conditions of temperature and humidity, which may compromise the device functionality. Condensation of water vapor is an issue affecting functional and aesthetics of Head Lamp. The current paper analyses the process of water vapor condensation inside an automotive LED head lamp. This paper also discusses the design methodology to avoid condensation under particular conditions. Design methodology includes design considerations for better air movement for heat management, material selection, ease of moisture exchange, breather or vent selection, placement. Additionally, this paper would also discuss about effective use of simulations tools, test methods and assembly process guidelines to avoid impact due to condensation. This paper would consist of one example with application of above methodology, its test and field results.
RANE, SANDEEP BALU, Pawar, Nishant
Application of Color Light-Emitting Diodes in Automotive Exterior Lighting2024-01-500301/15/2024
Trends in automotive lighting are moving toward vehicle exterior lights, which will communicate with drivers and surroundings. The small size, lower power consumption, high efficiency, and substantially long life make LEDs a leading light source in automotive lighting applications. Losses in optical power for InGaN-based LEDs can be reduced up to 45% compared to AlGaInP, and phosphor-converted color LEDs can contribute to stable light output over the lifetime. Color LEDs will fulfill different requirements such as uniformity in color and luminance. Additionally, the mixing of different colors with white will underline the exterior features and aesthetic design of vehicles.
Janeva Azdejkovic, Mersida, Denis, Xavier, Matsuyama, Yuji, Miyairi, Hiroshi
Excavator exterior noise contribution analysis using angle-based operational acoustic load synthesis.2025-01-006205/05/2023
Since earth moving machines (EMM) are subject to exterior noise (EN) regulations, OEMs need to develop mitigation solutions from an early design stage. It is challenging to predict solution effectiveness at early design stage. Excavators are distinct compared to other EMM as their upper frame rotate while keeping lower frame fixed. ISO 6395(2) or EC/2000/14(1) require EMMs to follow specific operating maneuvers where noise sources change their position, directivity, and speed along the operating cycle. These conditions pose challenges in performing noise contribution analysis as a function of angular position and operating condition. Authors successfully demonstrated Acoustic source quantification and contribution analysis for linearly moving EMMs. However, excavator pose data processing challenges due to angular motion. This work demonstrates the use of frequency domain ASQ for operational acoustic source quantification and use of frequency domain virtual prototype sub structuring
Vesikar, Prasad Balkrishna, Haynes, Timothy, Aquino Arriaga, Adrian Antonio, Drabison II, John, Chaduvula, Prasanna
Analysis of Detection Distances and Road Safety of Modern Headlamps under Variation of Aim and Performance2022-01-096003/29/2022
In addition to the low - and high beam functions, modern headlamps also have the option of switching on only a part of the high beam. The so-called adaptive high beam is intended to increase the detection distance of objects and by that drastically improve the road safety. At the same time this function does not increase the glare for oncoming or preceding traffic. This is enabled through switching on or off the different segments of the high beam, depending on which and where other road users are recognized by the front camera. This massively increases the use of the high beam thus increasing road safety. In this study, the increase in the detection distance of objects on a straight line is statically investigated with a test person study. Furthermore, the glare of each of these three light functions is investigated. A vehicle with adaptive high beam and an oncoming vehicle are statically positioned on the test track and the detection distances and glare sensitivity are determined
Hinterwaelder, Christian, Hamm, Michael, Kobbert, Jonas
Electric Child Lock warning indication in Cluster2022-01-101703/29/2022
The warning lamp comes on temporarily on the instrument cluster when child lock is activated. It also should comes on when ignition is switched ON, and should get switched OFF approx. ten seconds after Engine is started. Proposal 1 : Child lock manual switch hardwired to cluster based on ground signal input, similar to door entry switch concept. Proposal 2 : Child lock integrated with central lock signal input through Child lock control via BCM signal Proposal 3 : Child lock indication to cluster based on radar signal input to BCM to control the Child lock
Ganesh, Muruga
The Gods' Light - A Novel Full Factorial Light Environment Control System with Vision System & Dark Photonic Channel Illuminant for Means of Transportation2022-01-096403/29/2022
Imagination is a real factor in scientific research. One of the most important elements of productive scientific research is to find out the right direction & clear goal. Take automobile lighting as an example, daylight lighting is generally acceptable for driving safety. So, therefore, one of the effective research methods to first simulate and approximate the daytime light environment as much as possible by vehicle lighting at night is the right direction and a clear goal. The three golden principles of safe driving are concentration, watch carefully, and prevent in advance. All of these safety rules strictly require the driver to take everything around the vehicle as a safe driving factor. A novel full-factors light environment Contrology with high intelligence and humanization based on the visual system and a novel dark photonic channel illuminant will make everyone, contain drivers themselves and drivers in the vehicle ahead and oncoming traffic, feel the incomparable
Xiong, XiangWen
The Optical Basis and Realization Conditions of High Recognizable & Glare-Free Chiaroscuro & Sfumato-Chiaroscuro Photonic Channel Illuminant2022-01-096103/29/2022
A novel high recognizable & glare-free chiaroscuro & sfumato-chiaroscuro photonic channel illuminant, which is with a sense of depth & layering, stereo sense, large FOV (field of view), variable and/or gradient-based lighting to create a high safety and efficient lighting effect for the driver environment, overall vision and vehicle exterior lighting and all the target and the object surrounding the vehicle. It included 1) a superbright photonic channel system, which is used for a specific objective to get a high recognizable & identifiable visual perception; 2) a dark photonic channel system, which is used to form the non-illuminated area. The non-illuminated area is the ocular region of the humans, pets, animals & wildlife, drivers in the vehicle ahead and the oncoming traffic, etc. The entire head and face area is the most basic non-illuminated area for humans, pets, animals & wildlife, etc.; 3) a visual system, which is with the functions of dynamically targeted locking, visual
Xiong, XiangWen
Illuminated Vehicle Logos - Investigation on Potential Distraction and their Influence on Road Safety 2022-01-096203/29/2022
The current development of automotive lighting strives towards more and more lighting installations on vehicles. Additionally, to that, manufacturers start animating these lighting installations as coming home or leaving home greetings from the car to the driver. In the SAE Paper No. 2021-01-0852 it is shown, that these additional animations are in fact not distracting at all to other road users and when used correctly, e.g. in a sequential turn indicator, can be beneficial to the overall traffic safety. This study then aims to investigate the potential influence of illuminated logos on road safety. European law makers forbid the use of illuminated advertisement on vehicles to minimize the danger of distraction of other road users and thereby negatively influencing traffic safety. As of now, the active illumination of the manufacturer’s logo is considered advertisement. For this, a test vehicle was setup with two high luminance monitors, one at the front, one at the back, capable of
Kobbert, Jonas, Hamm, Michael, Hinterwaelder, Christian, Bullough, John D.
Carbon Fiber Fabric and Epoxy Resin Wet Lay-Up Repair Material Part 5 - Carbon Fiber Fabrics, Plain Weave, 193 g/m2, and Epoxy ResinAMS2980/5A (Current)09/24/2021
This Material Specification defines the requirements of carbon fiber fabric and epoxy resin systems used for wet lay-up repair of carbon fiber reinforced epoxy structures, qualified according to AMS2980/1 and AMS2980/2. Unless otherwise specified by the drawing, the order or the inspection schedule, the present specification shall be used in conjunction with the referenced documents.
AMS CACRC Commercial Aircraft Composite Repair Committee
Snowmobile Tail (Rear Position) LampJ279_202106 (Current)06/10/2021
This SAE Standard provides test procedures, performance requirements, design guidelines, and installation guidelines for snowmobile tail (rear position) lamp.
Snowmobile Technical Committee
Snowmobile Stop LampJ278_202106 (Current)06/10/2021
This SAE Standard provides test procedures, performance requirements, design guidelines, and installation guidelines for snowmobile stop lamp.
Snowmobile Technical Committee
Performance Requirements for Road Illumination Devices Using Light Emitting Diode (LED) SourcesJ2650_202104 (Current)04/14/2021
This SAE Recommended Practice is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances. This document establishes additional performance requirements specifically for road illumination devices using light emitting diode (LED) sources.
Road Illumination Devices Standards Committee
Performance Requirements for Road Illumination Devices Using Light Emitting Diode (LED) SourcesJ2650_202104-TEST-REC (Historical)04/14/2021
This SAE Recommended Practice is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances. This document establishes additional performance requirements specifically for road illumination devices using light emitting diode (LED) sources.
Road Illumination Devices Standards Committee
Vehicle-Specific Headlamp Mapping for Nighttime Visibility2021-01-088004/06/2021
Understanding when an object enters into the headlamp projection from a vehicle is useful to assist the driver in detecting the object in dark or nighttime conditions. Understanding the specific illumination pattern of a vehicle headlamp beam is useful for the evaluation of nighttime visibility issues in accident reconstruction. Determining when an object entered in the headlamp beam at a specific illuminance may be of particular importance to driver avoidance capabilities. Headlamp illumination patterns may be unique to each vehicle make and model. In this study, the headlamp illumination patterns of multiple vehicles were mapped, and the measured illumination distances were compared with empirical predications. In general, individual headlamp illumination distances fell within the range of minimum and maximum empirical predictions. However, the empirical relationships can have large standard deviations, which may influence the available time for the driver to detect and respond to
Funk, Charles, Petroskey, Karla, Arndt, Steve, Vozza, Adriano
An Optimized Method for Mapping Headlamp Illumination Patterns2021-01-088604/06/2021
Understanding the specific illumination pattern of a vehicle headlamp beam is useful for the evaluation of nighttime visibility issues in accident reconstruction. There are several challenges associated with traditional headlamp mapping techniques, including that mapping must be conducted in darkness, the mapping location topography may not be level or flat, maintaining a measurement grid is difficult to accomplish in the field, data acquisition requires multiple individuals, and it is generally very time consuming. Traditional techniques require the surrounding surface to be permanently marked in the evening in order to allow for future data collection of the mapped points in daylight conditions. The methodology presented here alleviates some of these challenges through real-time data collection and by accounting for topographical differences, which eliminates the requirement that mapping be conducted on a level or flat surface, and it reduces the number of required participants. This
Funk, Charles, Vozza, Adriano, Petroskey, Karla
Off-Highway Vehicle HeadlampsJ1623_202103 (Current)03/10/2021
This SAE Standard provides test procedures and performance requirements for off-highway vehicle headlamps.
Special Purpose Vehicle Committee
Cost-Effective Day & Night Marking Using LasersTBMG-3862803/01/2021
“Day & night marking” is used in automobiles, aviation, instrumentation and computer keyboards to make buttons and controls (e.g. door locks, window controls, sound system adjustments, etc.) clearly visible under ambient illumination conditions varying from bright sunlight (day) to low light (night). Although it sounds simple, manufacturing these products cost-effectively in a small-batch production environment requires the use of a sophisticated, automated, laser-based tool.
Headlamp CleanersJ2111_202008 (Current)08/26/2020
This SAE Recommended Practice provides test procedures, performance requirements, and guidelines for cleaners intended for use on motor vehicles.
Road Illumination Devices Standards Committee
Side Turn Signal Lamp for Long VehiclesJ2039_202008 (Current)08/03/2020
This SAE Recommended Practice provides test procedures, requirements, and guidelines for side turn signal lamps intended for use on vehicles 12 m or more in overall length, except pole trailers. Side turn signal lamps conforming to the requirements of this document may be used on other large vehicles such as trucks, truck tractors, buses, and other applications where this type of lighting device is desirable. It is not intended for use on shorter vehicles due to the higher intensity requirements of SAE J2039 compared to the SAE J914 devices.
Heavy Duty Lighting Standards Committee
SPECIFICATION FOR TESTING AUTOMOTIVE LED MODULESUSCAR33-1 (Current)08/03/2020
This specification is a general level subsystem light source specification that establishes test requirements of light emitting diode (LED) components and modules for use in automotive lighting systems. The completed test data from this test specification is intended to be provided to the OEM by the Tier 1 lamp set maker as part of the lamp assembly PPAP. Re-testing shall be required if any portion of the approved LED module experiences a design, manufacturing, or component change. This document shall be applied to systems that meet the requirements for design, performance, and validation established by government standards. The LED module is defined as the LED devices and any electronics required to properly energize the LEDs using a vehicle electrical power system along with any associated electrical wiring, connectors, and thermal management system. Samples shall be tested as a subsystem and considered one test sample for the entire test sequence. A failure of any component in the
USCAR
SPECIFICATION FOR TESTING AUTOMOTIVE LED MODULESUSCAR33-1-TEST-REC (Historical)08/03/2020
This specification is a general level subsystem light source specification that establishes test requirements of light emitting diode (LED) components and modules for use in automotive lighting systems. The completed test data from this test specification is intended to be provided to the OEM by the Tier 1 lamp set maker as part of the lamp assembly PPAP. Re-testing shall be required if any portion of the approved LED module experiences a design, manufacturing, or component change. This document shall be applied to systems that meet the requirements for design, performance, and validation established by government standards. The LED module is defined as the LED devices and any electronics required to properly energize the LEDs using a vehicle electrical power system along with any associated electrical wiring, connectors, and thermal management system. Samples shall be tested as a subsystem and considered one test sample for the entire test sequence. A failure of any component in the
USCAR
SPECIFICATION FOR TESTING AUTOMOTIVE LIGHT BULB SOCKETSUSCAR15-4 (Current)05/28/2020
This specification establishes the requirements and test procedures for automotive miniature bulb retention devices, including wedge base sockets with integral connectors, direct wire wedge base sockets, bayonet base sockets with integral connectors, direct wire bayonet base sockets, wedge base and bayonet base sockets with circuit plate assemblies, and associated interfaces. Tests shall follow the sequence shown in the flow charts in Appendices E and F whenever the following occurs: New design. Design, material, or process change made to an existing device, which could affect the outcome of the test. The test sequences shown in Appendix G shall be run annually.
USCAR
SPECIFICATION FOR TESTING AUTOMOTIVE LIGHT BULB SOCKETSUSCAR15-4-TEST-REC (Historical)05/28/2020
This specification establishes the requirements and test procedures for automotive miniature bulb retention devices, including wedge base sockets with integral connectors, direct wire wedge base sockets, bayonet base sockets with integral connectors, direct wire bayonet base sockets, wedge base and bayonet base sockets with circuit plate assemblies, and associated interfaces. Tests shall follow the sequence shown in the flow charts in Appendices E and F whenever the following occurs: New design. Design, material, or process change made to an existing device, which could affect the outcome of the test. The test sequences shown in Appendix G shall be run annually.
USCAR
Motorcycle and Motor Driven Cycle Electrical System Maintenance of Design VoltageJ392_202005 (Current)05/26/2020
This SAE Recommended Practice pertains to electrical systems of motorcycles both with and without batteries.
Motorcycle Technical Steering Committee
Front Fog LampJ583_202005 (Current)05/13/2020
This SAE Standard provides test procedures, performance requirements, design guidelines, and installation guidelines for front fog lamps.
Road Illumination Devices Standards Committee
Influence of Background Spectral Distribution on Perceptions of Discomfort Glare2020-01-063704/14/2020
The advent of light-emitting diode (LED) technology for automotive lighting allows flexibility of the spectral distribution of forward headlighting systems, while meeting current requirements for “white” illumination. As vehicle headlights have become whiter (with more short-wavelength light output) over the past several decades, their potential impacts on visual discomfort for oncoming and preceding drivers have been hotly debated. It is known that a greater proportion of short-wavelength energy increases discomfort glare, and that increasing the background light level (e.g., through roadway lighting) will decrease perceptions of discomfort. More recently it has been demonstrated that the visual system exhibits enhanced short-wavelength sensitivity for perceptions of scene brightness. As a result, roads illuminated by light sources with higher correlated color temperatures (CCTs) will be judged as appearing to be brighter than those illuminated to the same light level by sources with
Nagare, Rohan M., Bullough, John D.
Impact of Automated Lane Change Assist on Energy Consumption2020-01-008204/14/2020
This paper models adaptive cruise control combined with automated lane change assist to investigate the energy consumption improvements that such a system may provide compared to conventional adaptive cruise control. Automatically executing a lane change may improve efficiency, for example, when following a vehicle that is slowing to make a turn. Changing lanes while maintaining speed is hypothesized to be more efficient than staying in the same lane as the turning vehicle and reducing speed. The differences in such scenarios are simulated in a virtual environment using a cuboid model with idealized sensors. The ego-vehicle detects scenarios and performs a lane change to reduce or eliminate required speed changes. The results of the simulations compare the energy content of the resulting drive cycle as an idealized method to measure energy consumption for each cruise control strategy. The simulations consider traffic laws, such as turn signal requirements that may dictate the distance
Troxler, Casey, Currier, Patrick, Reinholtz, Charles
Innovative Bulb for Compact Headlamps Design2019-36-006601/13/2020
The Single beam reflector usage with H4 halogen bulb type is adopted in low cost emerging market countries that represent a very important segment for General Motors South America region. Currently, GM engineering tech centers have developed several different solutions for H4 halogen bulb reflector type that have their package, in terms of dimensions, to meet legal requirement and performance. Taking that into consideration, this new H19LL bulb development represents a great opportunity to find out an innovative new design with reduced mass and consequently cost reduction. Besides, it could allow enhancing reflectors portfolio as well as enabling Design Studio to better define customer driven theme for the vehicle appearance.
Cancino Junior, Israel João, Sônego, João Guilherme, de Souza, Raphael Nunes
Truck Tractor Power Outlet for Trailer ABSJ2247_201912 (Historical)12/17/2019
This SAE Recommended Practice identifies the minimum truck tractor electrical power output of the stop lamp and ABS (antilock brake system) circuits measured at the primary SAE J560 tractor trailer interface connector(s).
Truck and Bus Electrical Systems Committee
Flashing Warning Lamp for Industrial EquipmentJ96_201912 (Current)12/09/2019
This SAE Standard covers the general requirements and the test requirements for a flashing warning lamp for industrial wheeled equipment.
OPTC3, Lighting and Sound Committee
Low-Speed Impact Bumper System Test Procedure for Passenger VehiclesJ2319_201910 (Current)10/03/2019
The scope of this SAE Recommended Practice is restricted to the testing of original equipment on passenger vehicles and to provide for a uniform industry test procedure.
Motor Vehicle Council
Maintenance of Design Voltage - Snowmobile Electrical SystemsJ277_201909 (Current)09/25/2019
This SAE Recommended Practice provides test methods and requirements for maintenance of design voltage in snowmobile electrical systems. It pertains to both battery-equipped and battery-less systems.
Snowmobile Technical Committee
Halogen Light Source Performance Requirements for Motor Vehicle Forward LightingJ2560_201909 (Current)09/04/2019
This document establishes performance, material, and design requirements and design guidelines for halogen replaceable light sources used in road illumination devices for forward lighting. Non-halogen filament light sources suitable for forward lighting are specified in SAE J573. The terms “high beam filament” and “low beam filament” used throughout this document refer only to typical use, not to a mandatory, exclusive, or universal function of the filaments. This SAE Recommended Practice is periodically updated to keep pace with experience and technical advances.
Lighting Standard Practices Committee
Measurement Procedures for Short Pulse Width Strobe Anticollision LightsARP5029B (Current)07/30/2019
This SAE Aerospace Recommended Practice (ARP) provides the user with standardized guidelines for the measurement of effective intensity of short pulse width strobe anticollision lights for aircraft in the laboratory, in maintenance facilities, and in the field. A common source of traceability for calibration of the measurement systems, compensation for known causes of variation in light output such as the use of colored lenses, and recommendations which minimize sources of errors and uncertainties are included in this document. Estimates of uncertainty and error sources for each class of measurement are discussed.
A-20B Exterior Lighting Committee
LED Signal and Marking Lighting DevicesJ1889_201907 (Current)07/01/2019
This SAE Recommended Practice applies to functions of motor vehicle signaling and marking lighting devices which use light emitting diodes (LEDs) as light sources. This report provides test methods, requirements, and guidelines applicable to the special characteristics of LED lighting devices. This Recommended Practice is in addition to those required for devices designed with incandescent light sources. This report is intended to be a guide to standard practice and is subject to change to reflect additional experience and technical advances.
Signaling and Marking Devices Stds Comm
Design of an Energy-Efficient Critical Angle Lens ReflectorTBMG-3476807/01/2019
The critical angle lens reflector has commercial applications that supersede ordinary mirrored reflectors. The physics of the critical angle lens reflector are based on the optics principle of total internal reflection. Total internal reflection is characterized as follows: (1) as shown in Figure 2, the light rays are reflected off of the reflecting surface whereby the angle of reflection – with respect to the perpendicular to the reflecting surface – is equal to the angle of incidence of the ray, and (2) the reflection of the light ray takes place with no loss of energy upon reflection.
Hydraulic Excavator Operator ControlsJ1177_201906 (Current)06/06/2019
This standard covers mobile hydraulic excavator controls and the specific arrangement and direction of motion for the primary controls. This standard applies to mobile hydraulic excavators as described in ISO 7135—Earthmoving machinery—Hydraulic excavators—Terminology and commercial specifications, and ISO 6165—Earthmoving machinery—Basic types—Vocabulary.
MTC1, Earthmoving Machinery
Bendable Electronic Paper Displays a Range of ColorsTBMG-3438205/01/2019
The combination of conductive polymers on nanostructures was demonstrated as suited to creating electronic displays as thin as paper. The “paper” is similar to the Kindle tablet. It does not light up like a standard display, but rather reflects the external light that illuminates it; therefore, it works very well where there is bright light such as sunlight, in contrast to standard LED displays that work best in darkness. At the same time, it needs only a tenth of the energy that a Kindle tablet uses, which itself uses much less energy than a tablet LED display.
Glare Investigations and Safety Research on Digital Light Technologies2019-01-084904/02/2019
New human-machine interfaces are the direct result of digitalization. So also in lighting, new constellations have to be taken into account when looking to the possibilities of giving additional informations to the driver. Lighting and furthermore information given by light is a clear preference during nighttime driving. The global interest in standardization of light driven messages from autonomous vehicles to other traffic participants has opened new research needs in order to prepare full view on such new human-machine interface. In Europe, GTB (Group de Travail de Bruxelles) has established a working group dedicated to this topic. In order to provide a complete picture of the effects of digital light, the question of additional glare contribution by digital informations, i.e. extra projected light in form of patterns, symbols or areas was addressed in this research study. This article will show the investigations on wet and dry road glare while driving with digital informations
Hamm, Michael, Huhn, Wolfgang
Nissan concept sport sedan is all-electric, driver-optional19AUTP03_1203/01/2019
Nissan looks to pump up the fun factor with the IMs, an all-electric sports sedan concept with autonomous driving capability. The car made its global debut at the 2019 North American International Auto Show. “While still being a driver's car, this concept lives within our very graspable future of creating/engineering a thrilling autonomous ride, bringing the car into the realm of ‘entertainment’, Giovanny Arroba, Nissan's program design director, told Automotive Engineering. IMs features dual electric motors in the front and the rear with an estimated 483 hp (360 kW) and 590 lb·ft (800 N·m) for all wheel drive capability. The 115 kWh battery pack, packaged under the floor, provides an estimated 380-mi (611.5-km) driving range. The sedan's dedicated EV platform essentially mirrors that of Nissan's IMx KURO electric crossover concept that debuted at the Tokyo Motor Show in 2017.
Buchholz, Kami
Color SpecificationJ578_201902 (Historical)02/26/2019
This SAE Standard defines and provides a means for the control of colors employed in motor vehicle external lighting equipment, including lamps and reflex reflectors. The document applies to the overall effective color of light emitted by the device in any given direction, and not to the color of the light from a small area of the lens. It does not apply to pilot, indicator, or tell-tale lights.
Lighting Standard Practices Committee
Optical Warning Devices for Authorized Emergency, Maintenance, and Service VehiclesJ845_201902 (Historical)02/04/2019
This document provides design guidelines, test procedure references, and performance requirements for omnidirectional and selective coverage optical warning devices used on authorized emergency, maintenance, and service vehicles. It is intended to apply to, but is not limited to, surface land vehicles.
Emergency Warning Lights and Devices Standards Committee
Porsche reveals eighth-generation of fabled 91119AUTP01_1501/01/2019
Regularly updating and evolving the Porsche 911's aesthetic signature might seem an impossible task. But more than half a century after its birth, the unveiling of the eighth-generation at the 2018 L.A. Auto Show demonstrated that it is in fact still a totally possible art-with design boss Michael Mauer the chief artist. Designated in-house as the 992 series and slightly larger than the outgoing 991, it is launched in rear-wheel-drive and all-wheel-drive forms-Carrera S and Carrera 4S-and now only in the wide-body width previously used for the Carrera 4 GT3 and GTS, instead of two body widths. Across the nose, the new 911 is 45 mm (1.8 in) wider than the outgoing version, a figure some 911 purists may look at askance, as growth in recent years has already been considerable.
Birch, Stuart
Function Performance Status Classification for EMC Immunity TestingJ1812_201809 (Current)09/13/2018
This SAE Standard provides a general method for defining the acceptable function performance status classification for the functions of automotive electronic devices upon application of the test conditions specified as described in appropriate EMC immunity test standards (for example, SAE J1113 and SAE J551). Testing of devices could be performed either on or off vehicles. Appropriate test signal and methods, Function Performance status, and test signal severity level would have to be specified in the individual cases.
Electromagnetic Compatibility (EMC) Standards
A Novel Barricade Warning Light System Using Wireless Communications2018-01-503609/12/2018
Workers in construction and transportation sectors are at increased risk for work-related injuries and fatalities by nearby traffic. Barricade-mounted warning lights meeting current specifications do not always provide consistent and adequate visual guidance to drivers and can contribute to glare and reduced safety. Through an implementation of sensors and wireless communications, a novel, intelligent set of warning lights and a tablet-based interface were developed. The lights modulate between 100% and 10% of maximum intensity rather than between 100% and off in order to improve visual guidance and adjust their overall intensity based on ambient conditions. The lights can be synchronized or operated in sequential flash patterns at any frequency between 1 and 4 Hz, and sequential patterns automatically update based on global positioning satellite (GPS) locations displayed in the control interface. A successful field demonstration of the system verified that its functions were viewed
Rea, Mark S., Skinner, Nicholas P., Bullough, John D.
Aircraft Flashtube Anticollision Lighting SystemsAIR1276B (Current)08/28/2018
This document covers red and white anticollision lights using flashtubes as the light source.
A-20B Exterior Lighting Committee
Taking It to the Streets: Designing Streetlamp Optical ComponentsTBMG-2974007/01/2018
The task of creating a streetlamp optical system has changed over the last 20 years and due to this change, so has optical design software. Let’s compare the task of designing optical street lamp components 20 years ago with the process today.
Reflex ReflectorsJ594_201806 (Current)06/19/2018
This SAE Standard provides test procedures, requirements, and guidelines for reflex reflectors.
Signaling and Marking Devices Stds Comm
A Study on the Method to Manage the Weight and Cost of a Vehicle by Adjusting the Parameters of Styling Profile2018-01-102504/03/2018
Since the fuel efficiency of vehicle has become one of the big issues due to environmental pollution problems, many studies have been conducted on various methods such as improving powertrain performance and aerodynamic performance, reducing the weight of the vehicle and so on. There have been many new attempts to reduce weight but mostly about improving material property. In the case of vehicles sharing the same platform, the weight and cost of vehicle are mainly changed by the exterior styling. But, there is no solution to control the exterior styling in terms of the weight and cost of vehicle, yet. The purpose of this study is to find the way to save the weight and cost of vehicle while achieving the various performance and requirements of vehicle (safety, aerodynamics, driver’s visibility and so on) from exterior styling point of view. We focused on the weight difference of the vehicles that shared the platform and were same overall dimensions. We analyzed vehicle’s components that
Shin, Hyunsu, Kim, Taehee, Kwon, Junghoon, Lee, Dae Hung, Lee, Myunghun
Items per page:
1 – 50 of 980