The car of the future

[Remundo]

I dig up this historic subject of forums by offering you a small compilation of concepts for a new mobility, many are studies of more than 10 years, some even 15 years ... we are still waiting for their launch on the market!

The most promising was undoubtedly, in my eyes, the Lumeneo Smera ... which was "killed" in the bud, without any paranoia, just a statement ...

To learn more about this or that model, google ...

1) Lumeneo Smera:

I wonder if Philippe Schwoerer has not been here ...

http://www.automobile-propre.com/citela ... nees-1990/

excellent inspiration!

[Michel Kieffer]

Hello everybody

Here is the concept of small electro-solar vehicle presented in a more global way http://www.hkw-aero.fr/pdf/Michel_Kieffer_auto_%C3%A9lectro-solaire.pdf
The problem of bodywork on page 13, the transport of loads on page 31, a profiled variant on page 32, the dissipation of kinetic energy in the event of a crash on page 37 are developed, a few ideas for parking on page 40.

Michel

PS: developments on the Ec recovery devices exploit the Remundo data available on the site http://sycomoreen.free.fr/
Thank you Remundo !

[dirk pitt]

Hello everybody

Here is the concept of small electro-solar vehicle presented in a more global way [url] http: //www.hkw-

sympathetic and documented like the whole series of these documents.
on this my point of disagreement is the fact to embark the solar production on the vehicle. I think this is a false good idea.
pendulum vehicles are by definition only 2 places: at work or at home.
it is enough to have m2 of well oriented panels on the roofs of these 2 points and it will be much more effective than dragging with you panels which will be:
too much power limit
never well oriented
prevent sheltered or underground parking.
weigh down the vehicle
still require charging infrastructure at work for days without sun.
further complicate vehicle design. (personally, the shoebox, I don't believe it but good)

[Remundo]

yes indeed the panels integrated into the car are a bit of a gadget; if we only had these panels to charge, we would be very annoyed.

What does Michel de la Sono zion ? a German project which seems interesting to me and in the spirit of its latest research.

http://www.automobile-propre.com/sono-s ... 000-euros/

[chatelot16]

photovoltaic cells are expensive! they must be mounted in the best possible place, so first on the roofs of the houses

a car is expensive and it is interesting to put it in a garage to improve its lifespan ... photovoltaic on the car useless

the photovoltaic weighs down the car: the weight of the cells seems low, but it is necessary to protect them solidly, otherwise it will have a too short lifespan which is a waste in addition ... therefore waste of energy to move this weight, which risks to be superior to the energy production of these cells

[Michel Kieffer]

Remundo,

About the Sono Sion,

Manufacturer data: empty mass 1400 kg, 30 kWh or 108 MJ, 80 kw installed (108 hp), range 250 km, 30 km per day under photovoltaic cells only.

Verifications:
Mass of the batteries: hypothesis 150 Wh / kg => 30E3 Wh / kg / 150 Wh / kg = 200 kg
Autonomy on NEDC cycle (close result on WLTC) http://www.hkw-aero.fr/pdf/energie_utile_voiture.pdf : assumption Sf = 2 m²; Cx = 0,30; Cr = 0,012 => Eu = 40,7 MJ per hundred
Range: assumption of overall efficiency storage electricity, motorization, restitution = 0,72 => range = (108 MJ.0,72) / 40,7 MJ = 1,91 cent) = 191 km
Contribution of photovoltaic cells to battery charging: hypothesis 3 m²; 150 W / m²; taking into account unfavorable orientations, yield = 0,40; daily charging time = 6 h at full power => 150. 3. 0,40. (6. 3600) = 3,9 MJ or 3,6% of batteries.
Autonomy under photovoltaic cells only = 3,9. 0,72 / 40,7 (Eu) = 0,07 cent = 7 km (compare with the 30 km displayed).

The 200 kg of batteries are to be compared with the 20 to 30 kg of batteries of the proposed concept http://www.hkw-aero.fr/pdf/Michel_Kieffer_auto_%C3%A9lectro-solaire.pdf
The autonomy is 191 km, to compare with the autonomy of the proposed concept (see previous link). Remember that 60% of workplaces are within 10 km of the home (and the bicycle ?), 83% within 20 km (and the electric bike ?), 96% within 40 km.
The 40,7 MJ per cent is to be compared with the Eu of the proposed concept: 17,6 MJ per cent on the NEDC cycle limited to 70 km / h or 9,9 MJ on NEDC 45 km / h (go faster don't has no significant impact in urban and semi-urban areas).
The 5 seats are to be compared with the two seats of the proposed concept, which meets most of the daily travel needs to go to the workplace ("work" occupancy rate = 1,1 occupants per car ... ).

In summary, the Sono Sion is totally different from the proposed concept. For daily use and to get to the workplace, the Sono Sion is unnecessarily very oversized. This car is in the dominant trend which consists in electrifying our current too heavy and too large cars, all with the highest possible electric autonomy. This results in considerable battery masses, with the corollary that more energy is needed to transport the mass of batteries to go far. This is aggravated by the "spiral coefficient" http://www.hkw-aero.fr/pdf/coefficient_spirale.pdf.

What do you think ?

Michel

[Remundo]

on the figures / spiral coefficient you are right.

But who wants to buy your very slow and small car? It is a niche market. Most people want to buy something more versatile between the Citroën AX and the ZX. A bit like the specifications of the 2 CV. 4 places and a trunk not too small for 90 km / h.

[izentrop]

Hello,

Contribution of photovoltaic cells to battery charging: hypothesis 3 m²; 150 W / m²; taking into account unfavorable orientations, yield = 0,40; daily charging time = 6 h at full power => 150. 3. 0,40. (6. 3600) = 3,9 MJ or 3,6% of batteries.
Autonomy under photovoltaic cells only = 3,9. 0,72 / 40,7 (Eu) = 0,07 cent = 7 km (compare with the 30 km displayed).

The 30 km must be in June, under the equator, without cloud. This January we could count on 3%.
On their flyer there is a graph with the autonomy depending on the month: 4 km on a sunny day in January. http://files.sonomotors.com/Facts_ENG.pdf

[Leo Maximus]

I dig up this historic subject of forums by offering you a small concept compilation for new mobility.

Ligier Pulse 3 is also about urban mobility. My letter carrier has been using it for 2/3 years:

http://www.ligier-professional.fr/fr/co ... e-la-poste

http://www.ligier-professional.fr/fr/content/pulse-3

From € 12821 including tax.

[gildas]

Hello,

A cart that should please the econologist, La Microlino:
http://www.moteurnature.com/29242-la-mi ... t-livrable

With a LiFePo4 battery with a capacity of 8 kWh, the range is 120 km, for a base price of € 12.