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The Lumeneo SMERA prototype

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Khatir Soltani
A PREMIUM ONBOARD
Inside, the visibility is maximal with a wide glass surface which provides a panoramic view on traffic. The driver is comfortably held in his leather seat, protected by his seatbelt, without helmet. His seat can be fold away to let the passenger get in the back seat. Cockpit includes a LCD screen which displays all intuitive commands. The SMERA has a trunk which can easily receive daily bags (attaché-case, shopping bags...).
...and technology.

(Photo: Lumeneo)

One special features of the SMERA is its automatic tilting system, to fit the curves with a new sensation. The driver is taking care of nothing, the intuitive handling provides a real driving comfort.

In the heart of the SMERA, an electronic system manages all the parameters of the vehicle, starting from the signals provided by an integrated inertial system. According to the dynamic parameters of the car, the turning curves, the selected driving mode and the road quality, it determines the optimal tilting angle. It is a servomotor controlled by the calculator which fulfils the function automatically by moving the cabin and the four wheels.

ECOLOGICAL BY NATURE
Electric since its design, the SMERA is particularly ecological. Its operation generates no local pollution, no noise and no smoke. Its maintenance is minimal because electric motor have a very long life and its recycling is simple.

The SMERA is equipped with two electric brushless motors with permanent magnets for its propulsion, especially designed for this purpose. These motors offer a 1,000 Nm torque at the rear wheels from the start unlike thermal engines, where the maximum torque is only available at high speed.

Each motor weighs less than 30 Kg and is made up 98 % of pure metals, aluminium, copper and irons o its recycling is simple. It also avoids all the pollution created by a thermal engine: oils, catalytic exhausts, heavy metals.

The motors have been developed to answer precisely to the needs of the SMERA and to optimise the weight/power ratio. At Eeach braking action, the motors are transformed into an alternator to convert kinetic energy into electricity injected in the batteries, increasing the autonomy of the SMERA.

Brushless motors offer the main advantage to have no friction parts that makes it possible to have no maintenance and an excellent lifetime, nearly 200 000 km.

ELECTRICTY, ENERGY OF THE FUTURE
The energy source of the SMERA is a pack of batteries offering a 133 V tension and a 10 kWh capacity. Made of Lithium technology, these up-to-date elements meet all the needs of the SMERA. Thanks to its integrated charger and a 3 meters cable, the SMERA can be reloaded in all domestic plugs (230 V, 16 A).

The global awareness of the electric revolution will cause the multiplication of the charging plugs inside buldings, parkings and streets.

You just have to get a new reflex : plug it in the night and unplug it in the always have a 150 km maximum autonomy.

For this, the SMERA asks only for a 0,7 euro/100Km refill (standard cost French electricity). This means a 6 000 € saving for 100.000 km versus a thermal motorisation (of average consumption 5 l /100km).

The SMERA Lithium batteries are designed to operate at least 8 years, even if used every day.

AN ELECTRONIC COMING FROM AEROSPACE
From motors to wheels, a direct belt transmission is installed. The electric motors display a maximal torque when starting and deliver their power in such manner that it is not necessary to couple them with a gearbox.

The SMERA has two motor controllers and a central UC. They always work and the central UC supervises the controllers via a CAN bus, checking all results and calculation. In case of problem, the
central UC is acting as arbitrator, by adjusting the data. This architecture, already approved in aerospace, allows having a high reliability system. The electronic manages each millisecond the rates and the couples of the motors, so the SMERA can easily operate.

TECHNICAL SPECIFICATIONS

DIMENSIONS

Doors/seats 2 / 1+1
Length/width/height 2500 / 860 / 1480 mm
Wheelbase 1700 mm
Track 655 mm
Steering diameter 7 m
Maximum tilting angle 20°
Boot volume 12 / 160 (singleseater) dm3
Weight (with batteries) 500 kg
Pneumatic dimensions 145/70 R14

MOTORISATION


Technology Brushless electric motors with permanent magnets
Max power 30 kW/ 40 Ch
Max torque on wheels 1,000 Nm

BATTERIES

Technology Lithium
Max voltage 133 V
Capacity 10 kWh
Battery weight 80 kg
Charger 2 kW integrated

PERFORMANCES

Max speed 130 km/h
Range 150 Km

COLORS Berry red, Mineral silver, Deep black, Pearl white, Tanzanite blue.

photo:LUMENEO
Khatir Soltani
Khatir Soltani
Automotive expert
  • Over 8 years experience as a car reviewer
  • Over 50 test drives in the last year
  • Involved in discussions with virtually every auto manufacturer in Canada