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2013 BMW C Evolution e-Scooter
Welcome to the future! BMW Motorrad presents the first near-production prototype of an e-scooter: the BMW C Evolution. The new e-scooter is the intelligent response to growing traffic volume, increasing energy costs and ever more stringent CO2 limitations. In the pilot phase, several test vehicles will be put into operation in real conditions.
This is what the future looks like: designed for commuter traffic between the suburbs and the city center, the C evolution has a powerful motor, with a continuous output of 11 kW and a peak output of 35 kW, offering lots of riding fun. With a maximum speed of 75 mph and impressive acceleration capabilities, it supremely handles highway travel and overtaking maneuvers - even with a passenger. Thanks to its low center of gravity, the riding experience is characterized by extremely light handling and excellent slow-running properties - a particular benefit in metro traffic. What's more, a high-performance brake system with ABS ensures maximum safety.
The enormous storage capacity of the high-voltage battery (8 kWh) provides a range of up to 62 miles. Another impressive feature: in the ideal case the charging time when the battery is completely flat is less than three hours. The battery is charged via the integrated charging device, either at a regular household socket or a charging station.
In terms of recuperation (energy regeneration), the BMW C evolution is absolutely groundbreaking. As a rider, you do not have to actively initiate energy recuperation since the vehicle does this automatically whenever possible. Depending on riding style, the range of the e-scooter can be extended by 10 to 20 percent.
2013 BMW C Evolution e-Scooter Key Features
BMW Concept e. This embodies the aesthetic vision of an electrically powered
The third development stage now follows with the "C evolution":
BMW Motorrad presents the near-production prototype of an e-scooter as it
might soon go on the market. Since it was conceived as a future-oriented vehicle
for commuting between the urban periphery and the city centre, there were
two particular requirements for its development: performance figures comparable
to those of a maxi scooter with a combustion engine and a long range in realistic
conditions of use.
With its deployment of five fully ridable "C evolution" scooters,
BMW Motorrad has extended its experience in the field of e-mobility with single-track
vehicles and continues to expand its expertise in this segment. BMW Motorrad
is also making use of a number of events in Europe to further raise the profile
and promote acceptance of single-track electrically powered vehicles, thereby
preparing the market for such a vehicle with a view to launching a serial
production model. In this pilot phase, the vehicles are being
operated in real conditions of use and within areas which reflect their intended environment. The aim here is also to explore the infrastructure, such as establishing a network of e-mobility providers which might include vehicle rental companies and car-sharing firms.
The highlights at a glance:
o Innovative electric drive via drivetrain swing arm with liquid-cooled alternator, tooth belt and planetary gear.
o 11 kW continuous output (homologation according to ECE R85) and 35 kW peak output.
o 120 km/h max. speed.
o High range of up to 100 kilometres due to large battery capacity.
o High-voltage battery with high capacity (8 kWh) and innovative air cooling.
o Intelligent recuperation in coasting mode and when braking.
o Short charging times.
o Synergy effects with BMW automobiles and electrical safety to car standards.
o Hybrid chassis with agile handling due to low centre of gravity.
o Powerful braking system with ABS.
o Lightweight Metzeler Feelgreen tyres.
o Multifunctional TFT instrument cluster and LED daytime running light.
o Innovative colour concept and design.
While in electrically powered cars a cooling agent is normally used to cool
the battery, air cooling is used in the "C evolution" in order to
save space and weight. The heat of the high-voltage battery is dissipated
by means of an aerodynamically optimised cooling air shaft at the centre of
the battery casing through which there is a constant flow of air. To ensure
optimum heat dissipation, the battery base has longitudinally arranged cooling
However, the battery casing in die-cast aluminium not only holds the cells
with their special architecture but also the entire electronics unit for monitoring
the cells. It also acts as a load-bearing chassis element.
The power electronics for the electric drive is installed behind the battery casing. This not only takes care of controlling the alternator within a range of 100 to 150 volts but also responds to rider commands, for example by detecting the position of the throttle grip.
The system also processes information from the brake system and decides whether
energy should be recuperated and how much recuperation torque is to be applied
to the rear wheel if required.
Innovative electric drive via drivetrain swing arm with liquid-cooled alternator,
tooth belt and planetary gear.
The "C evolution" is powered via a drivetrain swing arm. The alternator is positioned behind the battery casing and integrated in the swing arm. Due to the proximity of the alternator output shaft and the swing arm axle, the moment of inertia around the swing arm centre of rotation is minimised. This also provides optimum suspension/damper settings and a sensitive response.
The secondary drive is via a tooth belt from the alternator to the rear belt
pulley on the output shaft. From here, power is transferred to the rear wheel
via a planetary gear. The total gear reduction is 1:8.4, while the maximum
rotational speed of the alternator is 10,000 rpm. The alternator and power
electronics are liquid-cooled.
Intelligent recuperation in coasting mode and when braking. BMW Motorrad
has conducted lengthy road tests to develop a form of
recuperation which is unique in single-track vehicles and very transparent for the rider. The "C evolution" is ridden in exactly the same way as a scooter with combustion engine. The rider does not have to actively initiate energy recuperation since the vehicle does this automatically whenever possible.
For example, energy recuperation commences when the throttle grip is closed
and - as in a combustion engine - the generator function of the alternator
creates drag torque which depends on the degree of recuperation. The drag
torque generated by the alternator is like the familiar "engine brake"
that takes effect when removing the accelerator with a combustion engine.
Recuperation is also carried out during braking, converting kinetic energy to electrical energy so as to charge the battery. Here, a system of sensors is used to tap into the brake pressure on the front and rear wheel brake. When the power electronics detects that the rider is braking, the alternator builds up drag torque, thereby supporting the brake manoeuvre and recuperating energy. By regaining energy during coasting or braking, the range of the two-wheeler can be extended by 10 to 20 per cent, depending on riding style.
Short charge times and charging technology based on the car model. The battery
is charged via the integrated charging device, either at a regular household
socket or a charging station. When the battery is completely flat, charging
time ideally lasts less than three hours.
The car-type charging socket - currently the only one of its kind in an electrically
powered two-wheel vehicle - is located behind a cover in the footwell at front
left. The charge cable required is housed in a storage compartment on the
right-hand side of the footwell. It is fitted with a mains plug to fit the
respective national system.
The fact that the charge socket is the identical to the car standard has
the advantage that the "C evolution" can be charged at charge stations
throughout the USA with integrated charge cable and standardised plug, for
example. This technology is not currently offered by any other electrically
powered two-wheeler. Charge cables with the relevant specifications will be
offered in later serial production models so that they can be charged at stations
Synergy effects with BMW automobiles and technical safety according to car
As a company of the BMW Group, BMW Motorrad is one of the very few motorcycle
manufacturers to be able to draw on in-house experience and expertise in the
automobile field in the development of electrically powered vehicles. The
synergies available here range from the use of the same technical components
through to high-voltage technology and the associated safety requirements
in terms of cables, plugs, battery electronics and safety shutdown.
This also includes the insulation monitoring device, the high-voltage indicator,
the high-voltage distributor and the DC-DC converter which serves to convert
high voltage to low voltage so as to feed the 12-volt vehicle power system
and the control units.
High-voltage safety standards established by leading automobile manufacturers (> 60 volt direct current) and functional reliability have been applied to an electrically powered two-wheel vehicle for the first time here.
Development in accordance with ISO 26262 is currently unique among (electrically
powered) two-wheel vehicles and ensures that all functionally relevant features
are developed in accordance with standards and reflect the current state of
science and technology.
Hybrid chassis with agile handling due to low centre of gravity.
Unlike existing maxi scooters with combustion engine, the "C evolution"
does not have a main frame in the usual sense. The aim of chassis development
for the "C evolution" was to combine the best possible directional
stability at high motorway speeds with agile handling in urban traffic. Engineers
also set out to make full use of the advantages provided by an extremely low
centre of gravity - due to the low position of the battery. For this reason,
chassis design is based on a torsionally stiff hybrid composite structure
made up of a load-bearing, torsionally rigid battery case made of cast light
alloy with integrated mounting for the single-sided drivetrain swing arm.
Bolted onto this are the steering head support and the rear frame in steel
tubing. In urban traffic in particular, the riding experience is characterised
by extremely light handling and excellent slow-running properties. The weight
of the vehicle is at
a level comparable to maxi scooters with a combustion engine.
Wheel control as well as suspension and damping is taken care of at the front by an upside-down fork with a generous fixed fork tube diameter of 40 mm.
The rear wheel suspension consists of a single-sided drivetrain swing arm.
At the rear, suspension and damping are performed by a spring strut placed
on the left-hand side, directly controlled and adjustable at the spring mount.
The spring travel is 115 millimetres at front and rear, thereby offering a
high degree of comfort.
Lightweight tyres to reduce rolling resistance.
At the front, the "C evolution" rolls on a 5-spoke light alloy die-cast wheel, size 3.5 x 15 inches, while the size of the rear wheel is 4.5 x 15 inches.
In order to reduce rolling friction and thus make the most efficient use
of the electrical energy stored, the "C evolution" has lightweight
tyres. These are special Metzeler Feelgreen tyres with optimised rolling resistance
in the sizes 120/70 R15 at front and 160/60 R15 at rear. The tyres were developed
with two clear aims in mind: environmental compatibility and high efficiency
on minimising rolling resistance, at the same time providing a higher mileage.
Rolling resistance was reduced by 25 per cent as compared to the Metzeler
Feelfree tyres. At the same time, the Metzeler Feelgreen tyres are very light,
with reduced hysteresis response and a new tread with specially created tread
grooves for optimised rolling resistance.
Powerful braking system with ABS.
At the front, a twin disc brake system with 270-millimetre diameter and 2-piston
floating calipers ensures powerful, safe deceleration. At the rear there is
a single disc system also with a diameter of 270 millimetres and 2-piston
floating caliper. In order to achieve a stable pressure point and optimum
controllability, all brake lines are steel-wrapped.
A high level of active safety is ensured by the BMW Motorrad ABS. Weighing just 700 grams and extremely small in size, the Bosch 9M dual channel ABS allows separate regulation of the two brake cycles for front and rear brakes.
However, the ABS software has also been adapted so as to control the recuperation
process in line with the specific requirements of the "C evolution".
As in the BMW Motorrad maxi scooters C 600 Sport and C 650 GT, the hold brake
is activated automatically when the side stand is folded out.
Multifunctional instrument cluster and LED daytime running light. The instrument
panel of the "C evolution" has a large, easily legible
TFT display which is conceptually based on that of the BMW i3. It has the obligatory speed display as well as offering a wealth of other information. This includes display of the battery charge state (SOC = State of Charge) and the energy balance. The latter is displayed by means of a progress bar, indicating to the rider whether energy is currently being converted into forward propulsion or being recuperated. This information helps the rider in his efforts to ride as efficiently as possible.
In addition to the familiar indicators, the instrument cluster of the "C evolution" naturally features all the status displays required by law in electrically powered vehicles. This includes warning lamps to indicate a potential insulation error or power limitation in the event of overload (see ECE R 100).
The front lighting unit encompasses headlamps with high and low beam. The
"C evolution" also features a centrally located daytime running
light. At the back there is a rear light in LED technology.
Innovative colour concept and design.
The "C evolution" draws on the innovative styling of the BMW Motorrad
family, offering a thrilling, inspiring design which arouses an emotional
response to the new drive technology. As in other BMW motorcycles, the so-called
split face runs across the upper trim section, giving the scooter a distinctive
and dynamic front view.
BMW Motorrad design style is also reflected in the styling of the twin-tipped
spoiler in the front trim and in a boomerang-shaped, aerodynamically formed
floating panel in the side trim. The short, sporty rear will have a helmet
compartment in the serial production model and emphasises the proactive character
of the "C evolution".
The combined effect of the colour "Light white" and the highlight
colour "Electric green" reflects the vehicle's specific properties,
such as maximum environmental compatibility, supreme dynamic performance and
simple handling. What is more, the illuminating "e" inscription
on the two battery side trim elements and motor unit bear out the technical
character of an electrically powered scooter.
2013 BMW C Evolution e-Scooter - Specifications/Technical Details
US MSRP Price: TBA
Innovative electric drive via drivetrain swing arm with liquid-cooled alternator, tooth belt and planetary gear
11 kw continuous output (homologation according to ECE R85) and 35 kW peak output
120 kph (74.5 mph ) maximum speed
Range of up to 100 kilometers due to large battery capacity. (62 miles)
High-voltage battery with high capacity (8 kwh) and innovative air cooling
Intelligent recuperation in coasting mode and when braking
Synergy effects with BMW automobiles and electrical safety
to car standards
Hybrid chassis with agile handling due to low center of gravity
Powerful braking system with ABS
Lightweight Metzeler Feelgreen tires
Multifunctional TFT instrument cluster and LED daytime running light
Innovative color concept and design
Special Metzeler Feelgreen tires with optimized rolling resistance,
in the sizes 120/70 R15 at front and 160/60 R15 at rear.