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BMW i3

BMW i8
BMW inches closer to the production of its eco-friendly product family

BMW is stepping into the future with its new i3 and i8 electric vehicles. While both are still labeled as "concepts" at this point, both designs give us a glimpse at what the production models will look like they the i3 and i8 launch in 2013 and 2014 respectively. 

The rear-wheel-drive i3 is a fully electric vehicle (think Nissan Volt), which is powered by an electric motor that generates 170 hp and 184 lb-ft of torque. The vehicle has a driving range of 93 miles, can sprint to 60 mph in under 8 seconds, and can reach 80 percent of its battery charge after one hour (full recharging time take 6 hours).

According to BMW's Klaus Draeger, the body is made primarily of carbon fiber and aluminum to keep weight at a minimum -- in this case 2,755 pounds. The vehicle seats four people and luggage space is on the small side at just 7 cu ft.

For a sexier take on the electric vehicle, BMW also has the new i8, which is a plug-in hybrid. A turbocharged 1.5-liter three-cylinder engine puts out 220 hp and 221 lb-ft of torque. The gasoline engine drives the rear wheels, but can also pair up with an electric motor up front to provide all-wheel drive traction. When both engines are working together, the i8 can reach 60 mph in less than 5 seconds.

If ultimate eco-friendliness is your goal, the i8 can travel in a front-wheel drive mode using only the electric motor for propulsion. In that configuration, the i8 can travel 20 miles on battery power alone before the gasoline engine kicks in.

Like the i3, the i8 can seat four people.

“The BMW i8 Concept is the sports car for a new generation – pure, emotional and sustainable,” added Draeger.

“We are marking another milestone in the history of the BMW Group. As Chairman of the Board and an engineer myself, I am very proud of this project,” explained Norbert Reithofer, Chairman of the Board of Management of BMW AG. “As the world’s leading premium car manufacturer, our aim is to offer customers purpose-built electric-drive cars as well.”



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RE: In order of use...
By Gzus666 on 7/29/2011 11:32:38 AM , Rating: 2
I don't see how your example made things easier, seems like you are asserting that because the self enclosed system works better with measurements in this self enclosed system, it was better at the time? If we just used Liters and variations as such, it seems like it would have worked just as well.

Color me confused.


RE: In order of use...
By bah12 on 7/29/2011 1:31:13 PM , Rating: 3
The point was in the old days, a halves based system was easier for the laymen to measure with. This can be easily and accurately done with a simple balance. Whereas a base 10 type system is much more cumbersome.

Take that same customer now wants 1 deciliters of milk from the bulk 1 liter (or 10 deciliters ) you have. You can use the scale to take that 10 deciliters and halve it 2 into 5 deciliters, then take that and half it into 2 2.5 deciliters, then halve that into 2 1.25 deciliters, but you are still not at exactly 1 deciliters. What metric requires is a calibrated container with marks so the store manager can transfer a precise amount out. Not saying it cannot be done, but just this simple example shows the mathematical expertise require to do it (knowing that 1.25 is the half of 2.5). That kind of knowledge was just not common place, when few people made it past 3rd grade.

The standards system does not require that, all it requires is a balance scale. You could argue to take that liter and measure it equally into 10 containers, but there is idiot proof way to do it 100% equally using crude tools of the day, as inevitably one of the 10 containers would be slightly off.

So I guess when you say how does that make it eaiser, I'd ask that you sell that customer a deciliter of milk using nothing more than a balance scale the typical general store in the 1800's would have. Prove to me how that is easier?

Now once you have an international body define a chuck of brass as a "gram" or a glass tube as a liter, then you can distribute that to all the stores and sell based off of it. Defining and enforcing that calibrated consistency is a BIG job to this day to make the metric system accurate. Now days certainly it works better, just not then. Back then as long as the Gallon you bought in bulk was measured according to standards, the rest could accurately be broken down by a laymen. So the customer would get the same cup regardless of what store he or she bought it from, and more importantly the store did not have to invest in expensive calibrated containers.


RE: In order of use...
By Iaiken on 7/29/2011 1:51:58 PM , Rating: 2
And yet if the customer asks for a cup of milk from that liter, your argument falls flat. Divide twice. :P


RE: In order of use...
By bah12 on 7/29/2011 4:32:04 PM , Rating: 3
Missing the point, what you call the unit of measure makes no difference. Call it a pinch of waddle from a 2 widgets. Point is a simple scale can be used in a base 2 system, calibrated standards and equipment are required for a base 10. Period, that is not debatable.

As I've said we have progressed far enough this is a non issue and we should give up that crappy way, but it does have historical merit.


RE: In order of use...
By bah12 on 7/29/2011 4:36:10 PM , Rating: 2
To dumb it down further for you, all you need is a rock and a stick to accurately divide thins by 2. How is it again that you divide things equally by 10 using primitive tools?


RE: In order of use...
By Maiyr on 7/29/2011 4:47:29 PM , Rating: 3
blah12, This is the most informative collection of posts I have ever read on DT.

Thank you


RE: In order of use...
By Bubbacub on 7/29/2011 2:47:01 PM , Rating: 1
Dude - the imperial system is crap. even the empire decided that it was crap and ditched it.


RE: In order of use...
By bah12 on 7/29/2011 4:28:49 PM , Rating: 2
As I wholeheartedly think we should as well. My point was it was not always useless, in fact there was a time when it was more efficient.


RE: In order of use...
By ekv on 7/29/2011 3:42:34 PM , Rating: 2
quote:
That kind of knowledge was just not common place, when few people made it past 3rd grade.
I saw a 6th grade test from the 1800's a while ago. I dare say it'd put 90% of graduating American high schoolers to utter shame. So yes, graduating 3rd grade would be a big deal. And our country has turned out pretty well.

Informative post btw.


RE: In order of use...
By Muirgheasa on 7/30/2011 9:21:15 AM , Rating: 2
Wha...? That argument makes no sense at all. If I have a liter, and you have a pint, and someone looks for a half liter, what are you going to do then? Well you'll be 68ml out, whereas I'll be laughing. Base 2, 8 10, 16, 60... it doesn't make a difference. If someone is looking for a half, quarter or eighth (etc) of what you have then you can get to it by halving. How in the world does the Imperial system help? It clearly makes no difference whatsoever.


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