BMW E-Scooter: a promising concept of electric scooter
On the basis of its future Concept C maxiscooter, BMW has just unveiled a new study of an electric scooter capable of competing with thermal engine maxiscooters in terms of power, while offering a range of 100 km. Presentation.
Visually very close to the Concept C maxi thermal scooter concept seen last year in Milan (read) and which should be launched this fall (read) to compete with the Tmax, the new BMW E-Scooter electric scooter concept promises both power … and autonomy !
Carried out with the financial support of the German Ministry of Transport, Construction and Urban Affairs, the BMW E-Scooter study would indeed have a range of more than 100 km, which is far more than the current average for electric scooters..
BMW and electric scooters |
The Mini brand (owned by the BMW group) had already presented a much more classic concept of electric scooter last year at the Paris Motor Show (read).
A year earlier, BMW unveiled the C1-E, an electric C1 concept a priori without commercial ambitions (read). |
Mainly intended for commuters who take their scooters to go to work in the morning or to go out at night, the E-Scooter should make it possible to reach a top speed "sufficient to use urban highways", announces BMW.
"Whereas until now, due to their limited road performance and range, all-electric scooters have lent themselves almost exclusively to urban use and, therefore, at short distances, the BMW E-Scooter study offers a field of ‘much wider uses", says the German manufacturer always at the forefront of technology.
The supporting battery box acts as a frame
Unlike current combustion engine maxiscooters, the BMW E-Scooter does not have a main frame: the aluminum battery housing acts as a load-bearing element, while housing the electronics required to monitor the cells. It is connected to the steering head support and the rear frame, as well as to the single-sided swingarm housed on the left side, on which the horizontally mounted spring / damper assembly is directly articulated.
In addition, because of its power "high", the motor is not housed in the hub with direct transmission or epicyclic gear: the electric motor is installed behind the battery box, while the secondary transmission is provided by a toothed belt passing from the motor to the pulley with pinion drive mounted coaxially on the swingarm axis (see video below).
BMW E-Scooter: video presentation
The torque is then transmitted to the rear wheel via a roller chain and when the electric scooter slows down (decelerating or braking), the released energy is recovered, "which increases the range by 10 to 20% depending on the driving profile", assures BMW.
Two imperatives: power and autonomy
In carrying out this study, the German engineers had two imperatives to respect: on the one hand, "dynamic values comparable to those of a thermal engine maxiscooter", And on the other hand "high autonomy under conditions of use adapted to daily practice".
The secret of this autonomy of more than 100 km in daily traffic? "The generous capacity of the storage battery", is content for the moment to explain BMW…
What we do know, however, is that "the battery for the BMW E-Scooter is recharged using the usual sockets", without specific charging stations. When the battery is completely empty, the charging time is"less than 3 hours", announces BMW which nevertheless found that in practice, the battery was never completely discharged. The actual charging time will therefore be"usually even shorter".
In terms of acceleration, the BMW E-Scooter would be capable of "compete with current maxiscooters powered by a 600 cc thermal engine"on a standing start from 0 to 60 km / h, assures BMW.
Liquid-cooled motor and air-cooled battery
When driving and recharging, an electric liquid pump circulates the coolant through the radiator. But while in most electric cars the battery is cooled by refrigerant, the BMW E concept uses air cooling "for reasons of space".
A concept that therefore seems particularly interesting and relatively successful, in an electric two-wheeler market set to develop in the coming years … To be continued on the Site: stay connected and connected !
Eric MICHEL – BMW photos and video
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