Conventional Powertrain, Powertrain Electrification Transmissions

Multiple Wet Clutch: double wet clutch and Triple wet clutch

Last update: 02 Sep. 2024

Valeo Automotive Wet Clutches

The Double Wet Clutch (DWC) is a type of automatic multi-speed vehicle transmission system, that uses two separate wet clutches. The principle of such a transmission is to be able to switch gears without feeling the change. It is seamless gear shifting. Valeo is also developing Triple Wet Clutch (TWC).

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What are Valeo Double and Triple Wet Clutches benefits?

  • All in one full system solution provider (DWC, friction paper, actuation, damper, cooling and actuation pump) from design to production.
  • Performance & Flexibility: Valeo in-house friction paper
  • Compatibility: adaptable to the majority of conventional & hybrid DCT gearboxes
  • CO2 benefits: dCSC technology = no centrifugal effect, no balance piston = drag torque reduction
  • Market: production facilities in Europe and Asia
  • Technologies: Valeo on-the-shelves Wet Clutches piston type and dCSC (Concentric Slave Cylinder) type

Valeo Double and Triple Wet Clutches specifications

  • Radial type or axial type technology available applications
  • Actuation pressure 12 bars to 20 bars (piston actuation)
  • Actuation pressure 40 bars (dCSC actuation)
  • Torque range: 200N.m to 400 N.m (can be extended)
  • Cooling flow between 5 and 20 l/min (depending on thermal mission profile)
  • Design with integrated K0 available

Vehicle type

  • Passenger car
  • Bus
  • Truck
  • Robot taxi
  • Motorcycle
  • Bike
  • Droid
  • Off road

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