Effective torque

Effective Torque is often referred to as wheel torque or torque to the wheels is primarily associated with automotive tuning. Torque can be measured using a dynamometer. Common units used in automotive applications can include ft·lbf and N·m. For more on units see: Foot-pound force.^[1]

The formula for effective torque to the wheels is:^[2]

Tw = Te * Ntf * ηtf

Ntf = Nt * Nf

ηtf = ηt * ηf

... where Tw is wheel torque, Te is engine torque, N is the gear ratio, η is the efficiency, and the subscripts t and f are for the gearbox and differential, respectively.^{[citation needed]} Effective torque will often be 5-15% lower than the shaft or crank ratings of an engine due to a loss through the drivetrain.

For a general article please see: Machine torque.^[3]

References

1. "The formula for the effective torque". mag | The Magazine by ebm-papst. Retrieved 2021-09-12.
2. Zhang, Cheng-Yu; Zhang, Qing-Jie; Lu, Wei (2016-11-01). "The effective torque on patchy spheres nearby a flat substrate induced by infinitely thin rods with adsorptive ends". Molecular Physics. 114 (21): 3127–3133. doi:10.1080/00268976.2016.1219780. ISSN 0026-8976.
3. Sebanc, J.; Brantley, W. A.; Pincsak, J. J.; Conover, J. P. (July 1984). "Variability of effective root torque as a function of edge bevel on orthodontic arch wires". American Journal of Orthodontics. 86 (1): 43–51. doi:10.1016/0002-9416(84)90275-6. ISSN 0002-9416. PMID 6588759.