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Rolling Resistance Measurement Procedure for Passenger Car, Light Truck, and Highway Truck and Bus Tires

Highway Tire Committee
  • Ground Vehicle Standard
  • J1269_201912
  • Current
Published 2019-12-10 by SAE International in United States
This SAE Recommended Practice applies to the laboratory measurement of rolling resistance of pneumatic passenger car, light truck, and highway truck and bus tires. The procedure applies only to the steady-state operation of free-rolling tires at zero slip and inclination angles; it includes the following three basic methods:
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Towed Vehicle Drivetrain Test Procedure Passenger Cars, Vans, and Light-Duty Trucks

Motor Vehicle Council
  • Ground Vehicle Standard
  • J1144_201910
  • Current
Published 2019-10-28 by SAE International in United States
This SAE Recommended Practice provides a means for evaluating the drivetrain of the passenger car, van, or light-duty truck being towed under a variety of road conditions. The towing equipment used is explained in SAE J1142. NOTE—For the purpose of this document, the drivetrain refers to the combination of a specific transmission (make, model, size, type), a specific differential assembly (make, model, size, type), and a specific driveline, if required.
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Recovery Attachment Points for Passenger Cars, Vans, and Light Trucks

Motor Vehicle Council
  • Ground Vehicle Standard
  • J2069_201910
  • Current
Published 2019-10-28 by SAE International in United States
This SAE Recommended Practice is intended to provide guidelines to the vehicle manufacturer for applying recovery attachment points on vehicles rated up to 3178 kg (7000 lb) GVW, such as passenger cars, vans, and light trucks.
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Towability Design Criteria and Equipment Use - Passenger Cars, Vans, and Light-Duty Trucks

Motor Vehicle Council
  • Ground Vehicle Standard
  • J1142_201910
  • Current
Published 2019-10-28 by SAE International in United States
This SAE Recommended Practice describes the type of equipment commonly used with towing equipment, provides information to calculate safe steering loads, and outlines design criteria.
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Uniform Reference and Dimensional Guidelines for Collision Repair

Motor Vehicle Council
  • Ground Vehicle Standard
  • J1828_201910
  • Current
Published 2019-10-28 by SAE International in United States
This SAE Recommended Practice defines, for vehicle manufacturers and collision information and equipment providers, the types of vehicle dimensional data needed by the collision repair industry and aftermarket equipment modifiers to properly perform high-quality repairs to damaged vehicles. Both bodyframe and unitized vehicles, including passenger cars and light trucks, are addressed.
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Towed Vehicle/Tow Equipment Attachment Test Procedure - Passenger Cars, Vans, and Light-Duty Trucks

Motor Vehicle Council
  • Ground Vehicle Standard
  • J1143_201910
  • Current
Published 2019-10-24 by SAE International in United States
This SAE Recommended Practice provides a means to observe and evaluate a towed vehicle under a variety of road conditions to determine its behavior. The drivetrain should be evaluated by conducting SAE J1144.
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Vehicle Lift Points for Service Garage Lifting

Motor Vehicle Council
  • Ground Vehicle Standard
  • J2184_201910
  • Current
Published 2019-10-16 by SAE International in United States
This SAE Standard is directed at the proper communication of the lift points on the vehicle frame or underbody to commercial service personnel for the purpose of raising passenger vehicles, light trucks, and vans completely off the shop floor. To this end, vehicle manufacturers are guided in the proper design of a lift point label and lift points located on the body/frame for use by service garages.
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Develop the Methodology Using DOE Approach to Improve Steering Return Ability of a Vehicle through Virtual Simulation

Mahindra & Mahindra, Ltd.-Nitin Kumar Khanna, Baskar Anthonysamy, Naveen Medithi, Karthik Senthi
Published 2019-10-11 by SAE International in United States
In driving, Steering is the input motion to the vehicle. The driver uses steering input to change the direction of the vehicle. During Parking or U turn bends the Steering is locked and later released to follow the desired path. Steering return ability is defined as the ratio of difference between steering wheel position at lock condition and steering wheel angle after 3 seconds of release to the steering wheel angle at lock condition. Having proper steering return ability characteristics has an important effect on vehicle steering characteristics. In this study, a full vehicle ADAMS model is prepared, and virtual steering return ability have been simulated in ADAMS/CAR for a Pickup truck vehicle. Simulated responses in the steering wheel angle have been validated by comparison with measurements. A Design of Experiment study is setup and Iterations are carried out to find the effect of Hard points and friction parameters. The effect of different parameters in terms of their importance is plotted and discussed. The objective is to establish the methodology to predict correct steering return…
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Measurement of Aerodynamic Performance for Mass-Produced Cars and Light-Duty Trucks

Road Vehicle Aerodynamics Forum Committee
  • Ground Vehicle Standard
  • J2881_201910
  • Current
Published 2019-10-09 by SAE International in United States
This Recommended Practice provides a procedure for measuring and documenting the aerodynamic performance in a full-scale wind tunnel of passenger vehicles, i.e., mass-produced cars and light-duty trucks intended primarily for individual consumers. Testing or numerical modeling of pre-production and/or reduced-scale models is outside the scope of this document. Aerodynamic development procedures, i.e., methods to improve or optimize aerodynamic performance, are also excluded. It is well-known that aerodynamic performance results depend significantly on vehicle content and loading, as well as the wind tunnel itself (type, scale, and simulation qualities of the wind tunnel). Publication of non-standard test results causes unnecessary additional development work and incorrect perception of a vehicle’s anticipated aerodynamic performance by government, academia, and the general public. The intent of this document is to promote uniformity and traceability of published aerodynamic performance data acquired in a wind tunnel, thereby enhancing the public reputation and credibility of the aerodynamics discipline in the total vehicle development process. Measurement of the aerodynamic performance according to this Recommended Practice requires a full-scale wind tunnel test on a production-ready,…
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Considerations for Suspension Modification

Motor Vehicle Council
  • Ground Vehicle Standard
  • J2492_201910
  • Current
Published 2019-10-09 by SAE International in United States
The scope of this document is limited specifically to the following types of passenger vehicles: automobiles, light trucks, and sport/utility vehicles. This document addresses modifications as they apply to legal use of the vehicle, and examines suspension modification as it applies to stock (as manufactured) ride height, and changed (raised or lowered) ride height. Note that modifications of ride height are considered, exclusive of wheel and/or tire modifications, which can also have potentially serious side effects, and are outside the scope of this document.
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