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 configurationsare possible.1.1 PurposeTo provide a common means to define, measure and quantify the operating characteristics of torque biasing differentials.
SAE J2817-2008 history
1970SAE J2817-2019 Definition and Measurement of Torque Biasing Differentials
2008SAE J2817-2008 Definition and Measurement of Torque Biasing Differentials