This document outlines general requirements for the use of Computational Fluid Dynamics (CFD) methods for aerodynamic simulation of mass-produced cars and light-duty trucks. The document provides guidance for aerodynamic simulation with CFD methods to support current vehicle characterization, vehicle development, vehicle concept development and vehicle component development. The guidelines presented in the document include Navier-Stokes and Lattice-Boltzmann based solvers.
Develop and document an aerodynamic constant speed procedure for heavy vehicles that can accurately calculate the aerodynamic performance through the typical expected yaw angles during operation at highway speeds.
This SAE Recommended Practice is intended to serve as a reference for the amount of torque that a Power Take-Off can induce on the transmission mounting pad. This document will apply to six-bolt, eight-bolt, and rear mounted power take-offs.
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.
This SAE J2971 Recommended Practice describes a standard naming convention of aerodynamic devices and technologies used to control aerodynamic forces on truck and buses weighing more than 10000 pounds (including trailers).
This SAE J2971 Recommended Practice Truck and Bus Aerodynamic Device Terminology document describes a standard naming convention of aerodynamic devices and technologies used to control aerodynamic forces on truck and buses weighing more than 10,000 pounds (including trailers).
This SAE Standard describes methods for evaluating the performance of the systems detection device, the minimum detection areas behind the machine, the visual and audible information presented to the operator and ground personnel, and the systems fault detection requirements. Also included are operator system function tests and maintenance procedures. The purpose of this document is to establish performance requirements for a Discriminating Back-Up Alarm System.
This document provides an assessment of current engineering test and simulation standards and methods used to determine the fuel efficiency, freight efficiency and emissions of single-vehicle systems comprised primarily of on-road trucks and buses with GVWR of more than 10000 pounds (4535 kg). This document provides guidance on the applicability and use of each test and simulation standard, method and technology discussed for multi-vehicle systems.
This SAE Standard includes only those towing winches commonly used on skidders and crawler tractors. These winches are used on self-propelled machines described in SAE J1057, J1116, and J1209. Specifically excluded are those winches used for hoisting operations.
This recommended practice applies to construction and general purpose industrial machines as categorized in SAE J1116. It describes the parameters related to the inherent availability of the covered classes of Off-Road Self-Propelled Work Machines.
This standard applies to General Purpose Industrial Machines, as described in SAE J1116, which are equipped with Rollover Protective Structures (ROPS).
This recommended practice deals with sizes, design considerations, and practices related to evacuating and refilling by positive means any oil comportment. This practice may also be applicable to other fluid compartments and is to supplement rather than eliminate the drain plug. (Ref. ISO TC 131/4/N27)