Conventional Powertrain, Powertrain Electrification Transmissions

Multiple Wet Clutch: double wet clutch and Triple wet clutch

Last update: 04 Sep. 2023

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).


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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