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BMW recently introduced the all-new BMW i3 electric car, constructed in a revolutionary way from next-generation materials.

BMW i3

The new all-electric BMW i3 is the first product of the new BMW i sub-brand, and is a truly purpose built electric car. The vehicle concept behind the BMW i3 was designed from the outset to incorporate an all-electric drive system. This has numerous advantages over “conversion” vehicles, in which the original combustion engine is swapped for an electric motor. The engineers can design whatever works best, in terms of construction, dimensions and configuration of the electric drive system’s components. The car’s development is dictated by the characteristics designed into the car by the development team and not by the constraints imposed by a pre-existing vehicle design. For example, the space in a conversion vehicle set aside for the fuel tank or exhaust system cannot be used. In the BMW i3 there is no need for this kind of compromise.

BMW i3

This leads to the LifeDrive architecture concept, which was purpose-built specifically for the BMW i3. It is comprised of two modules; the Life Module, and the Drive Module. Think of the Life Module as the passenger cabin, or greenhouse. It is the first-ever mass produced Carbon Fiber Reinforced Plastic (CFRP) passenger cell in the automotive business, and is a big factor in the cars efficiency. Carbon Fiber Reinforced Plastic is equally as strong as steel, while being 50% lighter, and 30% lighter than aluminum. The result is an electric car that weighs about 2,700 lbs (preliminary US figures).

Due to the lightweight, high tensile strength of CFRP, the passenger cell has added protection, and the battery has less work to do, which allows for the use of a smaller, lighter battery that saves even more weight, reduces charging time and increases range. The light weight design of the Life Module also lowers the BMW i3’s center of gravity, making it a more engaging and dynamic car to drive.

BMW i3

The Drive Module, which is constructed out of 100% aluminum, consists of the 22-kWh, 450 lb. lithium-ion battery, electric drive train, MacPherson strut and 5-link rear  suspension system and structural and crash components. The battery mounted in the rear, close to the drive wheels, gives impressive performance characteristics while also providing better traction.

Another benefit of the LifeDrive architecture concept is that there is no space-consuming transmission tunnel running through the center of the car, like in most internal combustion powered cars, because of the separate Drive Module. This gives the BMW i3 the interior space of the BMW 3 Series, while only having the footprint of the much smaller BMW 1 Series.

The interior is made using high quality renewable sources and recycled materials. The BMW i3 has the Next Premium interior, which blends sustainable resources with a premium feel for the same interior quality as the BMW 5 Series Sedan. 25% of the plastics in the interior and 25% of the thermoplastic parts on the exterior are made from either recycled materials or renewable sources.

BMW i3

According to studies carried out as part of BMW’s Project i, involving more than 1,000 participants and conducted over some 12.5 million miles, it was revealed that the average daily distance covered was around 30 miles. The BMW i3 will be able to travel 80 to 100 miles on a single charge. It is able to recharge in only 3 hours with the use of a 220V Level 2, 32-amp J1772 charger.  The SAE DC Combo Fast Charging, which charges the BMW i3 up to 80% in 20 minutes, and 100% in 30, can be had as an option.

In order to reduce range anxiety, a rear-mounted 650cc, 34 hp, two-cylinder, gasoline-powered Range Extender generator is available, which roughly doubles the vehicle’s range. When the battery gets to a certain level, the Range Extender starts and maintains the battery’s current state of charge. The Range Extender never directly drives the vehicle’s wheels. The Range Extender adds roughly 330 lbs. to the vehicle curb weight and has a fuel capacity of 2.4 gallons.

Highlights:

  • 170-hp, 184 lb-ft hybrid-synchronous electric motor with max. revs of 11,400 rpm.
  • 80-100 mile real-world EV range.
  • 22-kWh lithium-ion battery, which weighs 450 lbs.
  • 650cc gasoline powered Range Extender optional; holds charge, doesn’t power wheels.
  • 0-30mph in 3.5 seconds, 0-60mph in approximately 7.2 seconds (preliminary).
  • Top speed of 93 mph, electronically limited to preserve efficiency.
  • BMW’s signature, near-perfect 50-50 weight distribution.
  • Ultra-tight turning radius (32.3 ft), which is ideal for city driving.
  • Macpherson strut front and 5-link rear suspension set up.
  • Single Pedal Driving Concept with Brake Energy Regeneration, which feeds power back into battery.
  • 3 drive modes: Comfort, ECO PRO and ECO PRO+.
  • 3 hour 220 V @32 amps charging time.
  • Optional SAE DC Combo Fast Charging allows for 80% charge in 20mins; 100% in 30 mins.

The BMW i3 will go on sale in the US market in the second quarter of 2014, and starts with a base MSRP of $41,350, before any federal or state incentives, and before Destination & Handling fee (currently $925).

One thought on “BMW i3 | First Carbon Fiber Electric Car

  1. There has been a lot of buzz around electric cars recently with the brand new BMW. We just wrote a story about how purchasing solar panels and an electric car at the same time can actually save you more money than if you choose only one. One couple proved that this really works, and we have both their story and the numbers behind it on our blog! Check out the Aggarwal’s story here: http://bit.ly/13prTo1

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