Concept-EZ MIEV showcases the flexibility of in-wheel electric motors
By Mike Hanlon
February 28, 2006
March 1, 2006 Mitsubishi finally rolled back the curtain on the Mitsubishi Concept-EZ MIEV 4WD mono-box concept at the 76th Geneva International Motor Show today. The Concept-EZ1 MIEV2 showcases the company's MIEV concept for next-generation electric vehicles that employs in-wheel motors and a high energy-density lithium-ion battery system as core technologies. In the absence of a centerline powertrain, the vehicle interior is far more flexible than a traditional auto design and can be reconfigured into different seating arrangements, having a lounge mode (a conference room-like space with the seats arranged in a circle), a transport mode (cavernous luggage space with the rear seats stowed under the floor) and a driving mode (with spacious and comfortable seating for five adults).
MITSUBISHI Concept-EZ MIEV is powered by a 20 kW outer-rotor in-wheel motor at each wheel, for a maximum output of 80 kW (110 ps). Making upgrades in power and torque easy, this type of in-wheel motor also offers significant advantages in terms of space and operating efficiency, and in weight reduction.
The distinctive design projects high-stability road-hugging looks with a wheel-at-a-corner layout made possible by using an outer-rotor type in-wheel motor in each wheel to drive the mono-box body. The under-floor lithium-ion battery system keeps the floor low and flat, allowing MITSUBISHI Concept-EZ MIEV to offer roomy passenger space and seating arrangement versatility that matches a large mono-box model within compact 3700 mm (L) x 1800 mm (W) x 1750 mm (H) dimensions. With no central pillar, the double-opening doors on the left side (the rear door swings on hinges located at the rear of the vehicle) enhance passenger entry and exit as well as facilitating loading and unloading of luggage. Specifications
Length: 3700 mm Width: 1800 mm Height: 1750 mm Wheelbase: 2750 mm Seating capacity: 5 Tires: 225/30R20 Max. motor output: 80 kW (20 kW x 4)(110ps) Max. torque: 1600 Nm (163kg-m) Battery output: 24 kW Battery weight: 150 kg Cruising range: 120 km Acceleration 0-100 km/h: 11.0 seconds 0-400 m: 18.0 seconds Max. speed: 150 km/h