We try an electrified Jeep Renegade with GKN’s latest self-contained electrified rear-axle with torque vectoring from a single motor.
GKN is targeting this system at lower cost vehicles with lower-output electric motors . So, to ensure there's plenty of torque at low speeds, while continuing to provide continuous torque at highway speeds, it employs a single planetary gearset. The motor is geared to the planetary ring gear.At launch, the sun is locked to the case so that power flows through the planetary carrier for an overall ratio of 17.0:1.
When both clutches are open, losses are said to be very low—basically just the windage from the clutch discs spinning in oil. And of course, the eTwinster can apportion torque during regenerative braking as well, so it can act like high performance locking differentials that provide differing levels of lockup under power and over-run.Our Renegade demonstrator fit the eTwinster unit in front, with a simpler non-vectoring motor and differential in the rear for full electric propulsion.
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