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  2. Motor constants - Wikipedia

    en.wikipedia.org/wiki/Motor_constants

    The motor size constant and motor velocity constant (, alternatively called the back EMF constant) are values used to describe characteristics of electrical motors. Motor constant [ edit ]

  3. Desmodromic valve - Wikipedia

    en.wikipedia.org/wiki/Desmodromic_valve

    The common valve spring system is satisfactory for traditional mass-produced engines that do not rev highly and are of a design that requires low maintenance. [1] At the period of initial desmodromic development, valve springs were a major limitation on engine performance because they would break from metal fatigue.

  4. Direct torque control - Wikipedia

    en.wikipedia.org/wiki/Direct_torque_control

    Direct torque control (DTC) is one method used in variable-frequency drives to control the torque (and thus finally the speed) of three-phase AC electric motors.This involves calculating an estimate of the motor's magnetic flux and torque based on the measured voltage and current of the motor.

  5. Reluctance motor - Wikipedia

    en.wikipedia.org/wiki/Reluctance_motor

    The switched reluctance motor (SRM) is a type of reluctance motor. Unlike brushed DC motors , power is delivered to windings in the stator (case) rather than the rotor . This simplifies mechanical design because power does not have to be delivered to the moving rotor, which eliminates the need for a commutator .

  6. Kawasaki Heavy Industries & CSR Qingdao Sifang C151A

    en.wikipedia.org/wiki/Kawasaki_Heavy_Industries...

    The Kawasaki Heavy Industries & CSR Qingdao Sifang C151A is the fourth generation electric multiple unit rolling stock in operation on the existing North–South (NSL) and East–West (EWL) lines of Singapore's Mass Rapid Transit (MRT) system, manufactured by Kawasaki Heavy Industries (KHI) and CRRC Qingdao Sifang under Contract 151A.

  7. Wound rotor motor - Wikipedia

    en.wikipedia.org/wiki/Wound_rotor_motor

    A wound-rotor motor can be used in several forms of adjustable-speed drive. Common applications include hoists and conveyor systems. Common applications include hoists and conveyor systems. Certain types of variable-speed drives recover slip-frequency power from the rotor circuit and feed it back to the supply, allowing wide speed range with ...

  8. American Airlines rolls out new technology that would crack ...

    www.aol.com/news/american-airlines-testing...

    Last month, American Airlines became the first airline to test a new technology to help crack down on passengers who attempt to cut the line. And now, ahead of the busiest travel day of the year ...

  9. GM small gasoline engine - Wikipedia

    en.wikipedia.org/wiki/GM_small_gasoline_engine

    The GM Small Gasoline Engine (SGE) is a family of small-displacement, inline three- and four-cylinder gasoline engines ranging from 1.0 L to 1.5 L, developed by Adam Opel AG, Shanghai Automotive Industry Corporation (SAIC), MG Motor (MG), Shanghai GM (SGM), and the Pan-Asia Technical Automotive Center (PATAC).