Browse Publications Technical Papers 2010-01-1896
2010-10-05

Mathematical Modeling Software Series of Vehicle Propulsion System Vehicle Road Wheel/Sprocket Tractive Effort 2010-01-1896

To overcome a vehicle's tractive resistances and accelerate its gross weight, the propulsion system must have enough energy available at the diameter of its traction road wheel/sprocket-track as tractive effort. The tractive effort of the wheel/sprocket must balance or exceed that of vehicle's tractive resistances. The tractive resistances are comprised of wheel-terrain rolling friction, also called rolling resistance, R R , ambient air/wind resistance, R A , vehicle mass-slopped terrain gradient resistance, R G , and additional accelerating force demand from the propulsion engine to overcome the rotating element masses of the engine transmission gear and wheel inertia forces. Each of the mentioned tractive resistances and the rotating elements' inertia shall be fully studied and will be the subject of the next papers in this series.

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