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Standard

Definition and Measurement of Transfer Case Speed-Dependent Parasitic Loss

2019-07-17
CURRENT
J2985_201907
This SAE Recommended Practice covers transfer cases used in passenger car and light truck applications. Transfer cases are of the chain, geared, manually and electronically shifted types although other configurations are possible. The operating points (speeds, temperatures, etc.) were chosen to mirror those of the United States Environmental Protection Agency Vehicle Chassis Dynamometer Driving Schedules (DDS).
Standard

Universal Joint End Yoke Connection (Earwork)

2019-05-03
WIP
J2301
This document specifies the main dimensions and tolerances, which affect interchangeability between end yoke earwork for the most common North American used universal joints. Dimensions and tolerances of the mating universal joints are left to the discretion of the universal joint manufacturers. The term "Earwork" refers to the configuration and geometry defining end yoke connections directly provided for universal joint cross attachment of drivelines. Earwork for certain styles of universal joint connections and flange connections have for a long time been proprietary to certain manufacturers. Over years of usage, proprietary rights have expired and the industry, as a whole, has used these earworks as standard. In an effort to tabulate some of the long established practices, the following SAE Recommended Practice has been compiled. Manufacturers do from time to time, as the need arises, change tolerances or fits to better enhance component performance.
Standard

Universal Joints and Driveshafts--Nomenclature--Terminology--Application

2014-06-02
WIP
J901
The following definitions and illustrations are intended to establish common nomenclature and terminology for universal joints and driveshafts used in various driveline applications. In addition, useful guidelines are included for the application of universal joints and driveshafts. For more specific details, see Universal Joint and Driveshaft Design Manual, AE-7.
Standard

Definition and Measurement of Transfer Case Speed-Dependent Parasitic Loss

2014-02-17
HISTORICAL
J2985_201402
This SAE Recommended Practice covers transfer cases used in passenger car and light truck applications. Transfer cases are of the chain, geared, manually and electronically shifted types although other configurations are possible. The operating points (speeds, temperatures, etc.) were chosen to mirror those of the United States Environmental Protection Agency Vehicle Chassis Dynamometer Driving Schedules (DDS).
Standard

Definition and Measurement of Power Transfer Unit Speed-Dependent Parasitic Loss

2013-03-25
WIP
J3039
This SAE Recommended Practice covers power transfer units (PTUs) used in passenger car and light truck applications. PTUs may be of the chain, geared, single- or multi-axis type and may incorporate a disconnect system that is manually or electronically shifted, although other configurations are possible. The operating points (speeds, temperatures, etc.) were chosen to mirror those of the United States Environmental Protection Agency Vehicle Chassis Dynamometer Driving Schedules (DDS).
Standard

Definition and Measurement of Torque Biasing Differentials

2008-08-26
CURRENT
J2817_200808
This SAE Recommended Practice covers passive torque biasing axle and center differentials used in passenger car and light truck applications. Differentials are of the bevel gear, helical gear and planetary types although other configurations are possible.
Standard

All-Wheel Drive Systems Classification

1995-12-01
HISTORICAL
J1952_199512
In this SAE Recommended Practice, attention will be given to passenger cars and light trucks (through Class III). The definitions are inteded to outline basic nomenclature and to categroize all-wheel drive concepts. The goal is to give those working in the field a common base for discussion regarding the type of all-wheel drive systems independent of marketing terminology.
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