Powertrain Electrification Actuators

Disconnect Electric Actuator

Last update: 03 Sep. 2023

What is a disconnect actuator?

The Disconnect is an electric actuator implemented in the transmission that allows to disconnect the wheels from the Electric Drive Unit, primarly for electric vehicle All-Wheel Drive (AWD) and P4 Hybrid using Permanent Magnet Synchronous electric Motor (PMSM) type.

This disconnect device improves the system efficency (power consumption reduction) by reducing drag losses when all-wheel drive capability is not needed. Valeo offers both Solenoid or Electromechanical (Smart and non Smart) disconnect actuator types.

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Disconnect Electro-Mechanical Actuator benefits

  • For P4 E-Axle architecture or BEV AWD application
  • Drag reduction and overspeeding protection
  • Integration outside of reducer for maximum flexibility
  • Ball screw system and dog clutch compatibility
  • Management of external Fork sensor possible

Disconnect Electro-Mechanical Device

  • Torque ~ 0.5N.m to 10N.m
  • Angle ~ 30° to 60° (customer architecture)
  • Response time ~ 120 ms
  • Max current consumption @ 15A
  • Input for external fork sensor available

Vehicle type

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

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