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Standard

Cooling Flow Measurement Techniques

2018-09-26
CURRENT
J2082_201809
This SAE Information Report has been prepared at the request of the SAE Road Vehicle Aerodynamics Forum Committee (RVAC), incorporating material from earlier revisions of the document first prepared by the Standards Committee on Cooling Flow Measurement (CFM). Although a great deal is already known about engine cooling, recent concern with fuel conservation has resulted in generally smaller air intakes whose shape and location are dictated primarily by low vehicle drag/high forward speed requirements. The new vehicle intake configurations make it more difficult to achieve adequate cooling under all conditions. They cause cooling flow velocity profiles to become distorted and underhood temperatures to be excessively high. Such problems make it necessary to achieve much better accuracy in measuring cooling flows.
Standard

Inertia Calculation for Single-Ended Inertia-Dynamometer Testing

2018-09-26
CURRENT
J2789_201809
This procedure provides methods to determine the appropriate inertia values for all passenger cars and light trucks up to 4540 kg of GVWR. For the same vehicle application and axle (front or rear), different tests sections or brake applications may use different inertia values to reflect the duty-cycle and loading conditions indicated on the specific test.
Standard

Test for Tire Quasi-Static Longitudinal Force versus Longitudinal Displacement and Quasi-Static Lateral Force versus Lateral Force

2018-09-25
WIP
J2718
This SAE Recommended Practice describes application of two closely related test procedures, which together determine the linear range longitudinal and lateral stiffnesses of a statically loaded non-rotating tire. The procedures apply to any tire so long as the equipment is properly sized to correctly conduct the measurements for the intended test tire. The data are suitable for use in determining parameters for road load models and for comparative evaluations of the measured properties in research and development. NOTE: Herein, road load models are models for predicting forces applied to the vehicle spindles during operation over irregular pavements. Within the context of this document, forces applied to the pavement are not considered.
Standard

Low Speed Enveloping Test with Perpendicular and Inclined Cleats

2018-09-25
WIP
J2731

This SAE Recommended Practice describes a test method for measuring the forces and moments generated at a spindle when a tire rolls over a rectangular obstacle, cleat, at very low speed. The cleat used in a particular test condition is configured with its crest either perpendicular, 90 degrees, to the path of the tire or optionally with its crest inclined at an angle to the path of the tire. The carriage to which the spindle is attached is rigidly constrained in position during each test condition so as to provide a good approximation to fixed loaded radius operation. The method discussed in this document provides cleat envelopment force and moment and tire angular position histories as functions of distance traveled. These histories are essentially free from variations due to tire non-uniformities. The method applies to any size tire so long as the equipment is properly scaled to conduct the measurements for the intended test tire.

Standard

Tire Quasi-Static Envelopment of Triangular/Step Cleats Test

2018-09-25
WIP
J2705

This SAE Recommended Practice describes a test method for determining properties of a non-rolling tire quasi-statically enveloping either a set of triangular cleats or a single step cleat. In the case of the triangular cleats the normal force and vertical deflection of the non-rolling tire are determined. In the case of the step cleats the normal force, longitudinal force, and vertical deflection of the non-rolling tire are determined. The method applies to any tire so long as the equipment is properly sized to correctly conduct the measurements for the intended test tire. The data are intended for use in determining parameters for road load models and for comparative evaluations of the measured properties in research and development.

NOTE: Herein, road load models are models for predicting forces applied to the vehicle spindles during operation over irregular pavements. Within the context of this document, forces applied to the pavement are not considered.

Standard

Hydrodynamic Drives Terminology

2018-09-25
WIP
J641
Since the torque converter and fluid coupling are commonly used components of automatic transmissions in industry, the SAE appointed a committee to standardize terminology, test procedure, data recording, design symbols, and so forth, in this field. The following committee recommendations will facilitate a clear understanding for engineering discussions, comparisons, and the preparation of technical papers. The recommended usages represent the predominant practice or the acceptable practice. Where agreement is not complete, alternates have been included for clarification. EXAMPLE: Two systems of blade angle designations are described. Consequently when a blade angle is specified, the system should be designated. This SAE Recommended Practice deals only with the physical parts and dimensions and does not attempt to standardize the design considerations, such as the actual fluid flow angle resulting from the physical blade shape.
Standard

Tire Normal Force/Deflection and Gross Footprint Dimension Test

2018-09-25
WIP
J2704
This SAE Recommended Practice describes a test method for determining the vertical force and deflection properties of a non-rolling tire and the associated contact patch length and width. The method applies to any tire so long as the equipment is properly scaled to conduct the measurements for the intended test tire. The data are suitable for use in determining parameters for road load models and for comparative evaluations of the measured properties in research and development.
Standard

Tests to Define Tire Size (Geometry), Mass, and Inertias

2018-09-25
WIP
J2717

This SAE Recommended Practice describes a trio of test methods which determine basic tire size (geometry), mass, and moments of inertia. The methods apply to any tire so long as the equipment is properly scaled to conduct the measurements for the intended test tire. The data are suitable for determining parameters for road load models and for comparative evaluations of the measured properties in research and development.

NOTE: Herein, road load models are models for predicting forces applied to the vehicle spindles during operation over irregular surfaces paved or unpaved. Within the context of this Recommended Practice, forces applied to the surface on which the tire is operating are not considered.

Standard

Recommended Practices (RP) for Shipping Transport and Handling of Automotive-Type Battery System - Lithium Ion

2018-09-24
WIP
J2950
This RP aids in the identification, handling, and shipping of new and used un-installed lithium ion battery systems to and from specified locations. The generic term “battery system” shall be used to identify automotive-type and sized “traction” batteries when used as intended by the vehicle and battery system original equipment manufacturers (OEMs) for ground vehicles. It is the specific intent of this RP to identify, utilize and reference existing US and International hazardous materials (dangerous goods) transportation regulations, which are the only methodologies to be used to establish transportability of new battery systems. It is also the intent of this RP to provide recommendations regarding diagnostic testing to be used by service and shipping personnel for the purpose of determining a used battery system’s transportability. In support of the service and shipping personnel, the diagnostics process seeks to use standard tools of the trade and avoid laboratory type equipment.
Standard

Automotive and Off-Highway Air Brake Reservoir Performance and Identification Requirements - Truck and Bus

2018-09-24
WIP
J10
This SAE Standard applies to all new production air brake and air accessory reservoirs used in automotive vehicles and off-road machines. This document defines an “air reservoir” as a reservoir having single or multiple compartments that is used for storage of compressed air. This document does not apply to accumulators or reservoirs for storage of gases other than compressed air.
Standard

Taxonomy and Definitions for Terms Related to Shared Mobility and Enabling Technologies

2018-09-24
CURRENT
J3163_201809
This Recommended Practice provides a taxonomy and definitions for terms related to shared mobility and enabling technologies. Included are functional definitions for shared modes (e.g., carsharing, bikesharing, ridesourcing, etc.). Public transit services and other incumbent services—such as car rentals, shuttles, taxis, paratransit, ridesharing (carpooling/vanpooling), and pedicabs—are also included in the ecosystem of shared mobility services. This Recommended Practice also provides a taxonomy of related terms and definitions (e.g., station-based roundtrip, free-floating one-way, etc.). This Recommended Practice does not provide specifications or otherwise impose requirements on shared mobility.
Standard

Side Turn Signal Lamps for Long Vehicles

2018-09-20
WIP
J2039
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.
Standard

Fuel Filter Test Methods

2018-09-20
WIP
J905
The purpose of this fuel filter test method is to provide standardized methods for evaluating the performance characteristics of fuel filters by bench test methods. This, combined with data obtained from application tests, may be used to establish standards of performance for filters when tested by these standard methods. Many variations in requirements of filtration to protect fuel supply equipment on engines and variations in operating conditions make it difficult to specify meaningful "in-service" performance standards by which a filter may be judged. By the use of these standard test methods, test conditions are always the same, and comparisons of the laboratory performance of filters may be made with a high degree of confidence. Once the requirements of a particular application are known, performance standards for suitable filters may be established by these test methods, and adequacy of performance of filters for the job may be determined.
Standard

Cooperative Perception System

2018-09-18
WIP
J2945/8
This document provides a description for a V2X-capable device such as a vehicle, an infrastructure or a portable device to broadcast its perception information of other road users/objects nearby, to realize cooperative perception sharing, and to improve the perception performance of other V2X-capable devices/systems. #11;The concept of such perception sharing system can be: The host system is capable of transmitting and receiving V2X messages such as BSM and PSM messages. In the meanwhile the host system is capable of detecting nearby road users/objects such as foreign objects, vehicles and pedestrians. The host system can determine whether the detected objects are V2X enabled or not, and translate the detected objects to messages such as a new cooperative perception message, and/or an extension of messages such as BSMs/PSMs, and broadcast these messages.
Standard

Test Method for Evaluating the Electrochemical Resistance of Coolant System Hoses and Materials

2018-09-18
WIP
J1684
This test method provides a standardized procedure for evaluating the electrochemical resistance of automotive coolant hose and materials. Electrochemical degradation has been determined to be a major cause of EPDM coolant system hose failures. The test method consists of a procedure which induces voltage to a test specimen while it is exposed to a water/coolant solution. Method #1, referred to as a "Brabolyzer" test, is a whole hose test. Method #2, referred to as a "U" tube test, uses cured plate samples or plates prepared from tube material removed from hose (Method No. 2 is intended as a screening test only). Any test parameters other than those specified in this SAE Recommended Practice, are to be agreed to by the tester and the requester.
Standard

Test Method for Evaluating the Electrical Resistance of Coolant System Hose Covers

2018-09-18
WIP
J2790
This test method provides a standardized procedure for evaluating the electrical resistance of automotive coolant hose covers. It is know that an electrical potential exists between the engine and the radiator. Coolant hose cover conductivity has been determined to be a factor in reduced hose clamp life when vehicle build variations allow possible contact of the hose or the clamp to contact metal components on the radiator and engine thus completing an electrical circuit. The ensuing electrical current can undercut the clamp protective coating, leaving it vulnerable to the corrosive effects of road salts, moisture, and other environmental contaminants. SAE Recommended Practice J1684 addresses the conductivity of the tube portion of the coolant hose.
Standard

Positioning Enhancements for V2X systems

2018-09-17
WIP
J2945/7
This WIP delivers a technical report with the intent of leveraging existing specifications and reports for V2X positioning enhancements, e.g.SAE6857 Requirements for a Terrestrial Based Positioning, Navigation, and Timing (PNT) System. Specifically, this WIP will extend beyond the existing GNSS requirements with additional complimentary positioning and augmentation capability requirements. This work will study the enhancement of the existing specifications in J2945/x and other ITS/V2X standards.   The first step in this work will be to survey similar work within SAE and/or other standards development organizations to adopt and collaborate with their efforts.
Standard

Methods to Evaluate Impact Characteristics of Seat Back Mounted IFE Monitors

2018-09-13
CURRENT
ARP6330
This SAE Aerospace Recommended Practice (ARP) defines means to assess the effect of changes to seat back mounted IFE monitors on blunt trauma to the head and post-impact sharp edges. The assessment methods described may be used for evaluation of changes to seat back monitor delethalization (blunt trauma and post-test sharp edges) and head injury criterion (HIC) attributes (refer to ARP6448 Appendix A Items 3 and 6, respectively). Application is focused on type A-T (transport airplane) certified seat installations.
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