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  2. Traction (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Traction_(mechanics)

    Traction can also refer to the maximum tractive force between a body and a surface, as limited by available friction; when this is the case, traction is often expressed as the ratio of the maximum tractive force to the normal force and is termed the coefficient of traction (similar to coefficient of friction).

  3. Tractive effort - Wikipedia

    en.wikipedia.org/wiki/Tractive_effort

    The term tractive effort is often qualified as starting tractive effort, continuous tractive effort and maximum tractive effort.These terms apply to different operating conditions, but are related by common mechanical factors: input torque to the driving wheels, the wheel diameter, coefficient of friction (μ) between the driving wheels and supporting surface, and the weight applied to the ...

  4. Traction control system - Wikipedia

    en.wikipedia.org/wiki/Traction_control_system

    The predecessor of modern electronic traction control systems can be found in high-torque, high-power rear-wheel-drive cars as a limited slip differential.A limited-slip differential is a purely mechanical system that transfers a relatively small amount of power to the non-slipping wheel, while still allowing some wheel spin to occur.

  5. Traction - Wikipedia

    en.wikipedia.org/wiki/Traction

    Traction (mechanics), adhesive friction or force; Traction vector, in mechanics, the force per unit area on a surface, including normal and shear components; Traction motor, an electric motor used for propulsion of a vehicle, for example a car or a locomotive; Railway electric traction, the use of electric motors to propel rail cars

  6. Multiple-unit train control - Wikipedia

    en.wikipedia.org/wiki/Multiple-unit_train_control

    Two ICE 2 trains operating in multiple-unit train control in Bielefeld, Germany. Multiple-unit train control, sometimes abbreviated to multiple-unit or MU, is a method of simultaneously controlling all the traction equipment in a train from a single location—whether it is a multiple unit comprising a number of self-powered passenger cars or a set of locomotives—with only a control signal ...

  7. Traction motor - Wikipedia

    en.wikipedia.org/wiki/Traction_motor

    A ZQDR-410 traction motor (the large, dark component on the axle with small ventilation holes) A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives, electric or hydrogen vehicles, or electric multiple unit trains.

  8. Railway electric traction - Wikipedia

    en.wikipedia.org/wiki/Railway_electric_traction

    Electrical traction offered several benefits over the then predominant steam traction, particularly in respect of its quick acceleration (ideal for urban (metro) and suburban (commuter) services) and power (ideal for heavy freight trains through mountainous/hilly sections). A plethora of systems emerged in the first twenty years of the ...

  9. Current collector - Wikipedia

    en.wikipedia.org/wiki/Current_collector

    Trolley pole wheel on top of the trolley pole of Twin City Rapid Transit Company No. 1300. A current collector (often called a "pickup") is a device used in trolleybuses, trams, electric locomotives and EMUs to carry electric power from overhead lines, electric third rails, or ground-level power supplies to the electrical equipment of the vehicles.