Electrical powertrain of recent Megane E-Tech options new cooling system


The powertrain of the all-new Megane E-TECH Electrical was totally developed by the Alliance. Produced in Japan for Nissan and in France for Renault, this powertrain options an modern new oil cooling system for the wound rotor synchronous motor.

Electrical motors should have a wonderful cooling system as a way to be environment friendly. We subsequently labored with our colleagues in each Japan and Cléon, France, to develop two patented improvements. The primary of these patents covers the oil cooling system for our wound rotor synchronous motor. We fitted injectors in strategic locations to splash the electrical wound rotor motor whereas concurrently cooling each the rotor and the stator. The second patented innovation covers a intelligent method that allows us to harness the rotor’s momentum, utilizing a hoop gear system to intensify stator cooling by projecting oil in the direction of the heads.

—Fabrice Bernardin, Head of the e-technology work unit at Renault’s Engineering Division


Drive unit

The brand new oil cooling system combines easy and environment friendly technical options to maintain the motor of the Megane E-TECH Electrical at an optimum temperature. Benefits of the cooling system embody:

  • Elevated effectivity as a result of strategic placement of 4 injectors to splash {the electrical} circuit the place wanted whereas cooling the electrical engine’s rotor (transferring element) and stator (mounted element).

  • A extra compact unit the mass of which has been decreased by 33% in comparison with the earlier era of electrical motors; the discount in mass contributes to decrease vitality consumption.

  • Enhanced driving pleasure with easy and dynamic acceleration and reversing in all conditions, in addition to better engine energy over lengthy durations of accelerator operation, even at excessive speeds on the motorway.


  • FR3059487, “Synchronous Electrical Machine With Rotor Coil”

  • FR3043509B1 “Oil Cooling Of An Electrical Motor With Coil Rotor”


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