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Cars > MINI > Mini E - Electric Car 2009

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Mini E - Electric Car 2009

BMW Group will present the new, electrically-powered MINI E to the global media for the first time at the Los Angeles Auto Show on 19/20 November 2008. 500 MINI E vehicles will then be shipped to the US states of California, New York and New Jersey for testing with private and corporate customers.

All-electric MINI E to be unveiled at Los Angeles Auto Show

  • BMW Group to pilot test 500 cars in North America

BMW Group will present the new, electrically-powered MINI E to the global media for the first time at the Los Angeles Auto Show on 19/20 November 2008. †500 MINI E vehicles will then be shipped to the US states of California, New York and New Jersey for testing with private and corporate customers.

The development of the MINI E underlines BMW Groupís commitment to reducing fuel consumption and CO2 emissions in road traffic, without compromise to the driving experience. The 500 cars bound for North America will offer BMW Group the opportunity to evaluate ownership potential for vehicles supplied with an electric power supply.† BMW Group aims to begin series production in the medium term of all-electric vehicles as part of the companyís Number ONE strategy.

The cars will be delivered to customers on a one-year lease with an extension option.† Monthly lease instalments will cover any required technical service including all necessary maintenance and the replacement of wearing parts. †At the end of the lease, all of the automobiles belonging to the project will be returned to the BMW Groupís engineering fleet where they will be subjected to comparative tests.

MINI E specification and performance
The MINI Eís electric drive train produces a peak torque of 220 Nm, and power is delivered to the front wheels via a single-stage helical gearbox. †This unique engine and transmission arrangement powers the MINI E seamlessly to 62 mph in 8.5 seconds and on to an electronically-limited top speed of 95 mph.†

Based on the current MINI Hatch, the car will initially be available as a two-seater.† The space normally inhabited by rear passengers is reserved for a lithium-ion battery.†

When in use in the zero-emissions MINI, the battery unit combines high output with ample storage capacity and remarkable power output. The lithium-ion storage unit will have a maximum capacity of 35 kilowatt hours (kWh) and transmit energy to the electric motor as direct current at a nominal 380 volts. The rechargeable battery is made up of 5,088 cells grouped into 48†modules. †These modules are packaged into three battery elements that are compactly arranged inside the MINI E.

The energy storage unitís basic components are based on technologies proven in power supply units for mobile phones and portable computers. The MINI Eís lithium-ion battery can be plugged into all standard power outlets. Its charge time is strongly dependent on the voltage and amperage of the electricity flowing through the grid.† In the USA, users can recharge a battery that has been completely drained within a very short period of time using a wallbox that will be supplied as standard with every MINI E.

The wallbox will be installed in the customerís garage, enable higher amperage, and thus provide for extremely short charging times. Wallboxes fully recharge batteries in just two-and-a-half hours. †Only lockable garages or similar buildings will qualify as power stations for the MINI E.

Driven by electricity: zero emissions at minimal cost
A full recharge draws a maximum of 28 kilowatt hours of electricity from the grid.† Based on the carís range, a kilowatt hour translates into 5.4 miles. Besides the benefit of zero-emissions driving, the MINI E thus offers significant economic advantages over a vehicle powered by a conventional internal combustion engine.

The heavy-duty battery delivers its power to an electric motor, which is mounted transversely under the MINI Eís bonnet. †This power unit is able to unleash its full thrust from a dead standstill and is complemented by its dynamic deceleration potential, which is directly coupled to the accelerator pedal.

As soon as the driver releases the accelerator pedal, the electric motor acts as a generator. This results in braking force, and the power recovered from the kinetic energy is fed back to the battery.† This interaction ensures a comfortable and smooth driving experience. In city traffic, some 75†per cent of all deceleration can be done without the brakes. Making substantial use of this energy regeneration feature extends the carís range by up to 20 percent.

The MINI Eís brake system comes with a newly developed electric pump. Its Electrical Power Assisted Steering (EPS) is the same as the one used in mass-produced MINIs.†

The MINI Eís 1,465 kilograms is evenly distributed across the car.† Handling safety is ensured by modifications to the suspension system and the carís Dynamic Stability Control (DSC), which is adapted due to this modelís specific wheel loads.

Unique styling to mark out the new MINI E
Every MINI E produced for this pilot project will have the same paintwork and bear a serial number on their front bumpers.

The MINI Eís coachwork features an exclusive combination of metallic Dark Silver on all panels but the roof, which is clad in Pure Silver.† What distinguishes the zero-emissions MINI E is a unique logo in Interchange Yellow, depicting a stylised power plug in the shape of an ďEĒ set against a silver background. †It has been applied to the roof, in smaller dimensions to the front and back, to the charger port lid, the dashboard trim, and Ė combined with the MINI logo Ė to the door jamb, in slightly modified form. The colour of the roof edges, mirror housings, interior style cues and seat seams will also match the logoís yellow hue.

Inside, the central gauge and battery level indicator behind the wheel of the MINI E Ė which replaces the MINIís rev counter - feature yellow lettering against a dark grey background. The battery level is displayed in percentage figures. The central gauge includes an LED display indicating power consumption in red and power recuperation in green.

Maintenance by qualified specialists
The electric driveís high-voltage technology requires that maintenance work be done by qualified personnel using special tools that are not included in MINI service partnersí standard toolboxes.† In light of this, a service base will be set up for customers in California, New York and New Jersey, staffed by MINI service engineers that are specially trained to perform maintenance and repair work on the MINI Eís electrical components. In the event of drive malfunction, these experts will provide professional support at the customerís local MINI dealer or the service baseís specially equipped workshop. Technical inspections will take place after 3,000 miles (just under 5,000 kilometres) and at least after six months.

Production in Oxford and Munich
The MINI E has already gone through the major phases of product development for mass-produced vehicles and passed numerous crash tests on the way.† The MINI Eís energy storage unit emerged completely unscathed from all of the crash tests mandated by US standards, which are especially high.

Production of the 500 cars will take place at the companyís Oxford and Munich sites and is scheduled for completion before the end of 2008. †MINIís Plant Oxford will be responsible for manufacturing the entire vehicle on the standard production line, with the exception of the drive components and the lithium-ion battery. The units will then be transferred to a specially equipped manufacturing facility situated on BMW plant premises where the electric motor, battery units, performance electronics and transmission will be integrated.

MINI E technical data

Body

MINI E

Number of doors/seats

3/2

Length/width/height
(unloaded)

mm

3,714/1,683/1,407

inches

146.2/66.3/55.4

Wheelbase

mm

2,467

inches

97.1

Track front/rear

mm

1,453/1,461

inches

57.2/57.5

Turning circle

m

10.7

feet

35.1

Transmission oil incl. axle drive

l

Permanent filling

Kerb weight

kg

1,465

lbs

3,230

Payload

kg

195

lbs

430

Gross vehicle weight rating

kg

1,660

lbs

3,656

Cargo space (DIN)

l

60

Engine

Type

Electric motor

Motor type

Asynchronous motor

Output

kW/hp

150/204

Torque (from idle)

Nm

220

Max. rpm (cut off)

min-1

12,500

Electrical System

Battery capacity

kWh

35kWh, approx. 28kWh of which useable

Battery weight

kg

260

lbs

573

Battery charge time in h

at 110 V/12 A
(1.3 kW)

23.6

at 240 V/32 A
(7.0 kW)

4.4

at 240 V/48 A
(10.6 kW)

2.9

Battery design

53 cells connected in parallel constitute a unit, 2 units connected in series constitute a module, 48 modules connected in series constitute the battery; 5,088 individual cells in total

Battery cooling

Air cooling via temperature-, load- and speed-sensitive fans

Battery location

Extends rearward from the heel plate;
replaces the rear seat bench

Peak current

A

Short bursts of up to 900A


Running Gear

Front wheel suspension

Single-joint MacPherson spring strut axle
with anti-dive control

Rear wheel suspension

Longitudinal link with centrally mounted control arms, z axis

Front brakes

Vented disc

Diameter

mm

294

inches

11.6

Rear brakes

Disc

Diameter

mm

259

inches

10.2

Road stability systems

DSC adapted to modified kerb weight and wheel load
(always on), low-friction recuperation control via DSC,
ELUP (electronic under pressure pump) brake boost

Steering

Rack and pinion with electronic power steering (EPS)

Total steering
transmission ratio

:1

14.1

Type of transmission

Single-stage helical gearbox,
derived from the Cooper S helical gearbox

Axle load distribution

front/rear in kg

750/715

front/rear in lbs

1,651/1,575

Tyres

All-season Runflat 16"

Performance Ratings

Power-to-weight ratio (DIN)

kg/kW

9.76

Acceleration 0Ė100 km/h
(0-62 mph)

s

8.5

Top speed1

mph

95.0

km/h

152

Range (FTP 72)2

mls

150

km

240

Consumption (FTP 72)

Total

kWh/mls

0.19

kWh/km

0.12

CO2

g/mls

0

g/km

0

1 With electronic cut-off.
2 US Federal Test Procedure, also referred to as UDDS (Urban Dynamometer Driving Schedule).

Mini E - Electric Car 2009

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