Drive com au BMW i3 ultimate electric machine

22 Апр 2014 | Author: | Комментарии к записи Drive com au BMW i3 ultimate electric machine отключены
BMW i3 � Electric Car 127kW Auto

Greg Kable

Revealed: BMW i3

BMW kicked off its high stakes bid for electric vehicle supremacy in style on Monday with the unveiling of the production version of the i3 the first of what the German car maker promises will be a complete range of electric and hybrid models to be sold under its new i brand.

In simultaneous presentations held in London, New York and Beijing, BMW board members lifted the veil on the innovative electric car, revealing a contemporary-styled hatchback that remains faithful in size and appearance to the earlier i3 concept revealed at the 2011 Frankfurt motor show but with more practical five door arrangement for added practicality and ease of entry.

The i3, which boasts a claimed all-electric range of between 130 and 160km, is planned to go on sale in Australia by mid-2014 at a price tipped to be around $50,000. A so-called range extender option, which brings a small petrol engine that acts as a generator to produce electricity on the run, will be available from the start of sales, providing a doubling in real world range at 340km.

Among the i3 s prime electric car rivals will be the Nissan Leaf and Renault Zoe . the latter not sold here.

Unlike the earlier limited production Mini E and BMW 1-Series ActiveE both of which acted as a test bed for the new BMW, the i3 will be available for outright purchase or on a lease scheme with a fixed deposit and 36 monthly payments.

Among the incentives being considered to entice buyers is a program that will allow customers to secure more conventional BMW models at reduced rentals rates for limited periods or on weekends.

Conceived under the working title Mega City Vehicle a name meant to focus attention on its suitability for urban driving, the i3 represents a number of firsts for BMW, which is reputed to have spent up to 2 billion Euros ($2.9 billion) in research, development, testing and production processes for the new four-seater. A further 1 billion is rumoured to be reserved for publicity and marketing of the new BMW i brand, under which the new car will be sold.

Included among the innovations is a lightweight inner body structure made entirely out of carbon fibre that is woven and cured at the company s plant in Landshut, Germany. At 1195kg, the i3 weighs about 90kg less than the 1-Series despite using a battery that is claimed to weigh a significant 230kg. The inherent strength of the assembly used to support its carbon fibre reinforced body panels has allowed BMW design team to do away conventional B-pillars (the pillars between front and rear doors) and provide rear-hinged coach style doors at the rear.

At 3999mm in length, 1775mm in width and 1578mm in height, the i3 is 326mm shorter, 10mm wider and 158mm taller than the second-generation 1-Series hatchback. It rides on a chassis that has a wheelbase 120mm shorter than that of its existing entry level model at 2570mm, providing the new electric car with relatively short 707mm front and 722mm rear overhangs.

The i3 is the first series production BMW to rely purely on electricity for propulsion. But in a move harking back to the company s most illustrious combustion engine models it eschews front-wheel-drive for a more traditional rear-drive layout in the interests of interior packaging, low speed maneuverability and what executives describe as class leading steering response.

Power is provided by a synchronous electric motor mounted within an aluminium sub-assembly above the rear axle. Produced in-house, the unit, known under the BMW eDrive banner, provides 125kW and 250Nm of torque some 7kW less but 7Nm more than the Mini Cooper S s turbocharged 1.6-litre four-cylinder petrol engine.

Drive is sent to the rear wheels via a single ratio gearbox mounted to the end of the electric motor, offering the choice of three driving modes: Comfort, Eco Pro and Eco Pro+.

Electric energy to run the i3 s electric motor is provided by a 22kWh lithium ion battery produced by Samsung and bearing a warranty valid for up to six years or 160,000km. It consists of 96 individual cells mounted within the flat floor structure and has been designed to allow the replacement of damaged cells rather than the entire unit. By packaging the battery as low down in the i3 s carbon fibre body structure as possible, BMW claims to have achieved a centre of gravity lower than that of the X1.

According to the official European Union electric car power consumption test, the i3 requires an average 12.9kWh/100km, providing it with an overall range of 190km in comfort mode.

BMW, however, quotes a real world figure of between 130 and 160km, depending on ambient temperature in the least efficient of its driving modes, comfort. In its most efficient state in EcoPro+ mode, in which it is limited to a top speed of 80km/h, the new BMW is claimed to provide a zero local emission range of up to 200km. In studies with the earlier limited production Mini E and BMW 1-Series ActiveE, BMW identified a global average range of 41km with participating customers.

A range extender (REX) option that acts as a generator to provide electricity to the battery whilst on the run will be available from the start of sales at a premium of about $4000, providing a more than 60 per cent increase to the i3 s theoretical range in Eco-Pro+ mode at a claimed 340km.

The range extender uses a 650cc two-cylinder petrol engine borrowed from BMW s C650 CT maxi-scooter producing 25kW and 55Nm of torque. It is mounted longitudinally at the rear next to the electric motor while a nine litre fuel tank is sited within the i3 s flat floor at the base of the front bulkhead. There is no direct drive to the rear wheels from the range extender, merely the generation of electricity.

So configured, the i3 adds 120kg at 1315kg and is claimed to require an average 13.5kWh/100km, with the petrol engine rated at 0.6L/100km for average CO2 emissions of 13g/km on the European Union test procedure.

With a power-to-weight ratio of 9.6kg/kW in EV (electric vehicle) configuration, the i3 boasts official 0-60km/h and 0-100km/h acceleration times of 3.7 seconds and 7.2 seconds respectively, along with a 80-120km/h split of 4.9 seconds.

In REX (range extender) configuration with 10.5kg/kW, the times are put at 3.9 seconds, 7.9 seconds and 5.5 seconds respectively. Both variants boast a top speed limited to 150km/h.

Recharging of the battery is through plug in means and the recuperation of kinetic energy created during period of coasting and under braking. BMW claims it takes less than 30 minutes to achieve an 80 per cent charge on a 50kW charger as found in some public recharging stations, and a rather less impressive eight hours on a domestic power socket. A tub underneath the short front bonnet provides stowage space for the recharging cable.

Aggressive recuperation in EcoPro+ mode is claimed to generate up to 50kW of kinetic energy on a trailing throttle.

The i3 rides on a bespoke aluminium chassis with a MacPherson strut front and five-link rear suspension. The steering, shared with the upcoming new-generation Mini, is a power assisted electro-mechanical arrangement that with a nominal 2.5 turns lock to lock give the new BMW a relatively tight 9.9 metre turning circle. As with its more traditional models, the German car maker claims a perfect 50:50 front-to-rear weight distribution.

The standard cast aluminium wheels are 19-inch in diameter and come shod with ultra narrow 155/70 profile tyres a combination BMW claims provides a significant reduction in both air and rolling resistance together with greater side wall compliance and similar grip levels to more conventional 16-inch wheels with 225/55 rubber. Buyers will also be able to specify larger 20-inch wheels with 155/60 front and 175/50 profile tyres.

Inside, the i3 provides dedicated seating for four on manually adjustable seats within a highly contemporary styled cabin close in appearance to the i3 concept. The front seats are mounted 170mm higher than those in the 1-Series at 670mm, with the rear seats mounted even higher still. Boot capacity is hampered by the rear mounted drive system and high floor; with a nominal 260 litres the i3 offers 100 litres less than the 1-Series hatchback.

The i3 will be produced on a dedicated production line at BMW s Leipzig plant in Germany in both left- and right-hand drive guises.

Sales are planned to get underway in selected markets this week, with the first Australian deliveries slated to begin by June 2014.

Together with the advanced i3, BMW has also developed a wide range of multi-media applications available through its ConnectedDrive suite dedicated to taking the electric car to a whole new level of efficiency while provide a new face to everyday motoring via connectivity solutions that allow it to be to be networked with various forms of public transport to provide what the German car maker describes as unprecedented levels of personal mobility.

The i3 is the first of in a range of new BMW i brand models planned for introduction to the Australian market within the next 18 months. Following the new hatchback in showrooms will be a production version of the i8 concept car, a petrol-electric hybrid that aims to mate small car efficiency with sports car performance. Both are due to make their public debuts at the upcoming Frankfurt motor show.

20 comments so far

Such a great shame they cost so much for batteries isnt it.And even more regrettable that they add to coal usage ,already so taxed .Wonder why they all are jumping on the coal powered cars at this point in time?Could it be profit motives?

Commenter Kane Location Date and time July 30, 2013, 10:08AM

A few years ago it looked like Hydrogen was going to be the next big thing and BMW looked like it was going to be a pioneer in that field, but very little has been said (at least in the mainstream media) about hydro for a while, so I wonder what … it. I like the range extender concept of using a small combustion engine to recharge batteries rather than a combined petrol/electric effort like in a hybrid car — it’s surprising more manufacturers haven’t gone this route since it would seem like the older, more proven technology and would surely be simpler to implement.


Commenter CaseThree Location Date and time July 30, 2013, 12:15PM

@Kane.

. because not everywhere in the world is so dependent on brown coal powered stations as Victoria. Some use Nuclear (for better or worst); some use gas fired power and some use other renewables.

What makes me laugh the most, is why people bother buying diesels in matchbox cars when it should only be used for hauling..and dont tell me its because of the mileage. Hybrids routinely get 1000 km/tank and dont require any external powering. Not ideal, but a good start.

BMW i3 � Electric Car 127kW Auto

Commenter Jack Jack Location Melbourne Date and time July 30, 2013, 1:22PM

Jack Jack, diesel torque in a small car? Yes please.

Commenter lolwat Location Date and time July 30, 2013, 3:28PM

Love my 2009 Astra diesel manual. Quick, economical and really good range.economy. I bet it’s a heap quicker than a Prius or any other Hybrid.

I think Hydrogen was … by the lack of a distribution network. Electricity is almost everywhere.

I like the sound of this BMW. price is OK given it’s a BM.

Commenter IrishPete Location Date and time July 31, 2013, 7:21PM

So with a quick look at the Aus Grid kw/h charges, i think you’d be looking at $2.66 per 100 in electricity costs, which is better than the most frugal petrol/diesel car. Say the average urban ltr/100k in a petrol or diesel is 6ltr/100 @ $1.50, thats $9 per 100km, $6.34 more than the i3. But at the i3 price mark, im thinking it would take approx 78,8643k before you break even. My commute to work is 22k round trip, or 14440 k in 3 years, so with a 3 year lease i wouldn’t break even!

Obviously is you drove more then you would, but it shows how things need to change price wise for electric for it to become useful. I for one would love to have an i3 to get to work.**

** BTW, maths was not my strong point, so im ready to be corrected on this!!

Commenter koolerking Location Date and time July 30, 2013, 10:31AM

And in other news, Hyundai sues BMW for trademark infringement.

Commenter Jase Location Melbourne Date and time July 30, 2013, 11:12AM

Court rulings have already declared no entity can own a letter. This has happened with Apple.

Commenter Jaques Location Date and time July 30, 2013, 3:58PM

Up there with the ugliest cars of the last 10 years and of course Aussie pricing will be north of $80K, so what’s the point?

Commenter daffy Location Date and time July 30, 2013, 12:11PM

No, they announced pricing as 50K same as a entry level 3 series. I don’t actually think it looks that ugly

Commenter N Location Date and time July 30, 2013, 2:05PM

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BMW i3 � Electric Car 127kW Auto
BMW i3 � Electric Car 127kW Auto
BMW i3 � Electric Car 127kW Auto
BMW i3 � Electric Car 127kW Auto
BMW i3 � Electric Car 127kW Auto
BMW i3 � Electric Car 127kW Auto

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