Drawbar pull

In <a href="/facts/Automotive_engineering/dspDKGwP">automotive engineering</a>, drawbar pull is the amount of horizontal force available to a vehicle at the <a href="/facts/Drawbar_(haulage)/h9hklhto">drawbar</a> for <a href="/facts/Acceleration/UVDmjYvR">accelerating</a> or pulling a load.
Drawbar pull is a function of <a href="/facts/Velocity/Q3o1LVDe">velocity</a>, and in general decreases as the speed of the vehicle increases (due both to increasing resistance and decreasing <a href="/facts/Transmission_(mechanics)/eoNqAufN">transmission</a> <a href="/facts/Gear_ratio/znASyK8H">gear ratios</a>). Drawbar pull is the difference between <a href="/facts/Tractive_effort/8ws6qyt3">tractive effort</a> available and tractive effort required to overcome resistance at a specified speed.
Drawbar pull data for a vehicle is usually determined by measuring the amount of available <a href="/facts/Tractive_force/8ws6qyt3">tractive force</a> using a <a href="/facts/Dynamometer/IcDW7VUg">dynamometer</a>, and then combining that data with coastdown data to obtain the available drawbar pull force at each speed.

Drawbar pull open-in-new

Drawbar pull