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  2. Haldex Traction - Wikipedia

    en.wikipedia.org/wiki/Haldex_Traction

    The second generation of Haldex coupling is an electronically controlled permanent 4x4 system with a Haldex differential calculating how much drive should be directed to the rear wheels. The Haldex system automatically distributes power between the front and rear wheels depending on slippage, but normally sends 95% of the power to the front wheels.

  3. Haldex (company) - Wikipedia

    en.wikipedia.org/wiki/Haldex_(company)

    Haldex co-owned (from 2004) the company Alfdex with Alfa Laval, for production of separators for truck engines. Haldex after 2011: In 2011, the Traction division was divested to BorgWarner, including the all-wheel drive. The hydraulic division formed a new company called Concentric and was listed on the Stockholm stock exchange.

  4. Volkswagen Golf Mk7 - Wikipedia

    en.wikipedia.org/wiki/Volkswagen_Golf_Mk7

    The R uses an updated, fifth-generation Haldex 4MOTION four-wheel drive system. Under low loads or when coasting, the rear axle is decoupled, helping to reduce fuel consumption. Drive to the rear axle can be engaged in fractions of a second via the Haldex coupling, which is actuated by an electro-hydraulic pump.

  5. Saab XWD - Wikipedia

    en.wikipedia.org/wiki/Saab_XWD

    XWD, an acronym for Cross-Wheel Drive and also known as Haldex Generation 4, is an all-wheel drive system designed by Haldex in partnership with Saab. [1] The XWD is a permanent all-wheel drive system, that can pre-emptively and continuously change torque distribution before wheel slip occurs. Saab Turbo X, the launch vehicle for Saab XWD

  6. Air-line fitting - Wikipedia

    en.wikipedia.org/wiki/Air-line_fitting

    Pneumatic tool attached using a coupling. A coupled pair consists of a male nipple or plug and a female coupler or socket. One side is connected to a flexible supply hose; the other may be attached to a manifold, valve, tool, or another hose. A female coupler is used on the supply side, and a male nipple is used on the receiving side.

  7. Viscous coupling unit - Wikipedia

    en.wikipedia.org/wiki/Viscous_coupling_unit

    The first mass-produced viscous couplings for a permanent 4WD off-road-capable vehicle were in the AMC Eagle, which was produced from 1980 to 1988 model years. [2] The AMC Eagle's single-speed model 119 New Process central differential used a viscous coupling filled with a liquid silicone-based material. [ 3 ]

  8. Fluid coupling - Wikipedia

    en.wikipedia.org/wiki/Fluid_coupling

    A fluid coupling cannot develop output torque when the input and output angular velocities are identical. [7] Hence, a fluid coupling cannot achieve 100 percent power transmission efficiency. Due to slippage that will occur in any fluid coupling under load, some power will always be lost in fluid friction and turbulence, and dissipated as heat.

  9. Direct-shift gearbox - Wikipedia

    en.wikipedia.org/wiki/Direct-shift_gearbox

    A direct-shift gearbox (DSG, German: Direktschaltgetriebe [1]) [2] [3] is an electronically controlled, dual-clutch, [2] multiple-shaft, automatic gearbox, in either a transaxle or traditional transmission layout (depending on engine/drive configuration), with automated clutch operation, and with fully-automatic [2] or semi-manual gear selection.