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SAE J1574-1

2018 Edition, January 1, 2018

Complete Document

Measurement of Vehicle and Suspension Parameters for Directional Control Studies

Includes all amendments and changes through Stabilization Notice (No longer revised / updated) , January 2018


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Product Details:

  • Revision: 2018 Edition, January 1, 2018
  • Published Date: January 2018
  • Status: Active, Most Current
  • Document Language: English
  • Published By: SAE International (SAE)
  • Page Count: 88
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

The parameters measured according to this SAE Recommended Practice will generally be used in simulating directional control performance in the linear range. (The “linear range” is the steady-state lateral acceleration below which steering wheel angle can generally be considered to be linearly related to lateral acceleration.) But they may be used for certain other simulations (such as primary ride motions), vehicle and suspension characterization and comparison, suspension development and optimization, and processing of road test data.

This document is intended to apply to passenger cars, light trucks, and on-highway recreational and commercial vehicles, both non-articulated and articulated. Measurement techniques are intended to apply to these vehicles, with alterations primarily in the scale of facilities required. But some differences do exist between passenger cars and trucks, especially heavy trucks, such as differences in body/frame flexibility, suspension stiffness, and suspension friction. These will be addressed in this document or SAE J1574-2, where appropriate. 

Purpose

The purpose of this document is to define the basic design requirements for test equipment and the test procedures to be employed in measuring certain vehicle characteristics generally required for directional control simulation. In addition, data processing procedures are provided so that data from different laboratories can be directly compared. The companion Information Report gives the rationale behind the Recommended Practice, where appropriate.
AIA/NAS Aerospace Standards