Electric cars a step nearer mainstream?

Using super capacitors, 99% of all kinetic braking energy is recovered.

You got that right.

Reply to
Doctor Drivel
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Actually what the article is about is a heads up to those interested in the economics of the world to a potential sea change in one of its biggest industries.

Reply to
The Natural Philosopher

Well I used 200miles because that is what is currently achievable at decent performance with LI-Ion batteries.

Reply to
The Natural Philosopher

"Doctor Drivel" gurgled happily, sounding much like they were saying:

You're forgetting that just one 200 mile journey is the same mileage as

200 2 mile journeys.

The _right_ question for short urban journeys is "Why are people using private cars instead of public transport?"

Wrong.

Are you denying the Pious has a two-mile range in battery-only mode?

Reply to
Adrian

There is zero insulation in a car. Insulation can be bonded onto the car panels. Herat can be reclaimed from the electric motor too.

In sunnier climes PV cells can be the whole roof of the car.

Reply to
Doctor Drivel

"Doctor Drivel" gurgled happily, sounding much like they were saying:

The aerodynamics barely come into play at town speeds. And why can't both aerodynamic and weight efficiencies come into play for internal- combustion vehicles as well? Simple. Because people WANT bigger cars and they WANT cars which have high passive-safety scores. Both of which give weight.

Reply to
Adrian

Most mileage is in short bursts in urban areas.

The question here is not a social question it is addressing the vast inefficiencies of the IC engines and the dirt it emits. Please focus.

You did get it wrong.

The articles are about the future. The electric Mini gets 200 miles range and outperforms a Porche.

Reply to
Doctor Drivel

But with the super efficent electric motors they use, the 'waste' heat will be fairly low - and will not devleop until the car has been driven for a while. So some means is still required for clearing screens and keeping occupants tolerably comfortable.

Actually, PV cells can be the whole roof of the car in any climes. But they don't help very much with heating on a dark winter day in the UK.

Reply to
Rod

Hasn't diesel caused a huge soot problem? they emit a lot more particulate matter?

Reply to
Toby Douglass

Roland Perry gurgled happily, sounding much like they were saying:

Which, going by the battery-to-mileage efficiency of the Pious would require 75kWh of capacity.

There's also the problem of people not necessarily having access to charging sockets at either home _or_ work currently, which would require a LOT of infrastructure upgrades in order to be provided.

And where's all this extra electricity coming from, anyway?

London ALONE sees 33bn vehicle km per year. That's about 15bn kWh of electrickery at Pious battery-mode usage rates. 15 terawatt-hours.

Now, remind me why I was meant to be changing from 60w incandescent light bulbs to 11w CFL?

Reply to
Adrian

It does.

Because of the size and weight of the engine and transmission. The Mini uses motor in wheel technology, a set of batteries and a very small fossil fuel generator to recharge. If a car is designed around this technology its shape will change lending it more adaptable to aerodynamics. Weight will be less as well as newer batteries are lighter.

Reply to
Doctor Drivel

I wont say anything about the Priapus, because its a complete piece of shit, frankly.

Similar to the power train on an IC car. Remember the motors will not be large, and there is no need for much in the way of transmission, or engine or battery cooling. Or exhaust systems, or oil coolers, or the strong mounting frame needed to tie that lot together.. or the insulation to keep all that noise and vibration out..or indeed most of what makes up the weight of a current IC car.

Yup. Its not dependent on the size of the battery, though you need some pretty serious charging equipment to do that. But we are talking multi-million pound motorway service stations here. I don't see any real problems in running a small substation in to them, and having the odd

440v 120A 3 phase connector littered around the parking lots..or whatever combination of volts and amps seems most appropriate.
Reply to
The Natural Philosopher

In message , at 11:13:07 on Tue, 27 May 2008, The Natural Philosopher remarked:

Which car is that, then?

Reply to
Roland Perry

"Doctor Drivel" gurgled happily, sounding much like they were saying:

I doubt it.

Why restrict yourself to such a narrow range of solutions? Ah, of course. Because that's the particular range that you see your preferred solution fitting into.

First, decide the answer. Then re-write the question to fit it.

Yeh, right...

Reply to
Adrian

Toby Douglass gurgled happily, sounding much like they were saying:

Not these days. Perticulate emissions have been VERY tightly controlled in the last couple of rounds of Euro emission standards.

Of course, particulate filters in diesel exhausts bring a whole new range of problems, but...

Reply to
Adrian

In message , at

11:22:37 on Tue, 27 May 2008, Toby Douglass remarked:

Isn't that what "cleaner diesels" largely avoid?

I rarely see diesel cars emitting clouds of smoke, that seems to be reserved for buses and trains.

Reply to
Roland Perry

They do and it is cacogenic.

Reply to
Doctor Drivel

Not worth the bother using diesel.

Reply to
Doctor Drivel

The Natural Philosopher gurgled happily, sounding much like they were saying:

Rubbish. Rover's K-series weighs about 130kg with transmission. Add 50kg for fuel, and you have a complete powertrain with a 300 mile range (and five minutes recharge for the next 300 miles) for 40% of that "half a ton".

The powertrain on a 2cv - engine and gearbox - is light enough to be carried by two people. With 25 litres of fuel, it'll give a four-seater car weighing half a ton _complete_ a range of 200+ miles.

Reply to
Adrian

Depends where you live. 50 miles is barely enough for our weekly shopping run, the monthly one is 100 miles...

And how well does an electric car cope with altitude changes? Hartside rises 400m (1300') in about 4 miles. There is a 1400' difference between home and the weekly shopping destination as well.

Fine for your 10 mile each way commute but that would be better served with decent public transport rather than thousands of single occupancy cars.

Reply to
Dave Liquorice

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