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Autonomous Systems, 2017

2017-03-28
With a mandate in Europe for autonomous emergency braking systems, there is a development happening with radar and camera based systems to do collision mitigation. The challenges include robust object tracking, stationary object detection, reactions for false positives, etc. The developments and challenges in the collision mitigation technology are included in this collection.
Collection

Vehicle Dynamics, Stability and Control, 2017

2017-03-28
This technical paper collection is focused on vehicle dynamics and controls using modeling and simulation, and experimental analysis of passenger cars, heavy trucks, and wheeled military vehicles. The papers address active and passive safety systems to mitigate rollover, yaw instability and braking issues; driving simulators and hardware-in-the-loop systems; suspension kinematics and compliance, steering dynamics, advanced active suspension technologies; and tire force and moment mechanics.
Collection

Autonomous Systems, 2015

2015-04-14
With a mandate in Europe for Autonomous emergency braking systems, there is a development happening with radar and camera based systems to do collision mitigation. The challenges include robust object tracking, stationary object detection, reactions for false positives etc. The developments and challenges in the collision mitigation technology are featured in this collection.
Standard

Air Conditioning Service Procedures for Heavy duty and Off-Highway work Machines using R-134a refrigerant

2016-09-12
WIP
J3126
This recommended practice provides technicians with safe and efficient techniques and general equipment recommendations for servicing Mobile Air Conditioning (MAC) systems in heavy duty and off-highway work machines. Presently, R-134a is the only approved refrigerant for use in mobile heavy duty and off-highway equipment and therefore this document primarily covers the servicing of R-134a systems. Since the technician may encounter other refrigerants a brief explanation on the identification safe handling of each refrigerant will be introduced.
Standard

Coiled Tubing Assemblies for Heavy Duty Air Brake Applications

2013-04-30
WIP
J3041
This SAE Standard establishes the minimum performance and endurance requirements for coiled air brake tubing assemblies used for hookup between tractors, trailers and converter dollies. The Standards SAE J844 and SAE J246 along with J1131 must be consulted to determine the complete performance and endurance requirements of individual components of the system. Related TMC Recommended Practices may be consulted for information associated with selection, installation and inspection of these assemblies. This document is intended to set out requirements for the majority of conditions rather than for specialized applications or environments.
Standard

Low Collapse Pressure Hydraulic Filter Element – 380 L/min Flow, 3.5 MPa Collapse Pressure, Filtration Ratio = ?? at xx µm

2013-01-02
WIP
J2321/4
This specification sheet establishes requirements for a low collapse pressure configuration filter element of a specific configuration with a minimum filtration ratio of 75 for particles larger than ? μm when designed and tested in accordance with SAE J2321 and this specification sheet. Note: The efficiency and dirt capacity have not yet been determined..
Standard

Performance Requirements for Nonmetallic Air Brake System Tubing

2014-08-26
WIP
J2547
This SAE Standard covers the minimum requirements for nonmetallic tubing as manufactured for use in air brake systems which tubing is different from that described in SAE J844. It is not intended to cover tubing for any portion of the system which operates continuously below - 40 degrees C or above +93 degrees C, above a maximum working gage pressure of 1.0 MPa, or in an area subject to attack by battery acid. This tubing is intended for use in the brake system for connections, which maintain a basically fixed relationship between components during vehicle operation. Coiled tube assemblies required for those installations where flexing occurs are covered by this document, SAE J1131 and SAE J2494-3, to the extent of setting minimum requirements on the essentially straight tube and tube fitting connections which are used in the construction of such assemblies.
Standard

Off-Road Self-Propelled Work Machines Operator enclosure environment Part 4:Heating, ventilating and air conditioning (HVAC) test method and performance

2014-09-16
WIP
J3078/4
J3078/4 specifies a uniform test method for measuring the contribution to operator environmental temperature provided by a heating, ventilating and air conditioning system operating in a specific ambient environment. The method might not determine the complete climatic environment of the operator since this is also affected by heat load from sources other than those on the machine, for example solar heating. J3708/6 is to be used in conjunction with J3078/4 to determine more accurately the complete heat loading on the operator enclosure. Minimum performance levels for the machine’s operator enclosure heating, ventilating and air conditioning systems are established in J3708/4.
Standard

Balance Weight and Rim Flange Design Specifications, Test Procedures, and Performance Recommendations for Heavy Vehicle Applications

2018-04-12
WIP
J3172
This SAE Recommended Practice is intended to serve as a guide for standardization of features, dimensions, and configurations of balance weights for aluminum and steel wheels intended for use on Heavy Truck/Vehicles (Class 5-8) to assure good installation and retention of the balance weight. This document also provides test procedures and minimum performance requirements for testing balance weight retention.
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