electricity and the vehicle of tomorrow
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8/13/2019 Electricity and the Vehicle of Tomorrow
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Electricity and the Vehicle of
Tomorrow
Naubahar Agha
August 2, 2013
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Improvements: Wankel
Rotary Engine
3 power strokes perrevolution Higher power to weight
ratio Fewer moving parts
However: Tip seals allowed a lot of
leakage and large loss ofenergy
Lower compressionratio: lower efficiency
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The Vehicle of the Future!
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What we actually get
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Electric Car: Public Image
http://www.youtube.com/watch?v=fkzBwXNACrM
http://www.youtube.com/watch?v=fkzBwXNACrMhttp://www.youtube.com/watch?v=fkzBwXNACrM -
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Electric Vehicles
Electric motors often achieve 90% energy
conversion efficiency.
No engine oil and fewer moving parts than a
gas car.
Charge at home
http://www.betterplace.com/How-it-Works#
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Battery Swap Method
http://vimeo.com/68832891
http://vimeo.com/68832891http://vimeo.com/68832891 -
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Electric Fueling Stations
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GM vs Tesla
GM sold 2.5 million vehicles globally in thesecond quarter, while Tesla set a sales targetof selling about 5,000 cars during the same
quarter. The share priceof Tesla (TSLA) has more than
tripled so far this year and the company nowhas a market value of $14billion. GM(GM, Fortune 500)'s market valueis $50.6 billion.
http://money.cnn.com/2013/07/18/news/companies/gm-tesla/?hpt=hp_t3
http://money.cnn.com/2013/07/17/investing/tesla-stock/index.html?iid=ELhttp://money.cnn.com/quote/quote.html?symb=TSLA&source=story_quote_linkhttp://money.cnn.com/quote/quote.html?symb=GM&source=story_quote_linkhttp://money.cnn.com/magazines/fortune/fortune500/2012/snapshots/175.html?iid=ELhttp://money.cnn.com/magazines/fortune/fortune500/2012/snapshots/175.html?iid=ELhttp://money.cnn.com/quote/quote.html?symb=GM&source=story_quote_linkhttp://money.cnn.com/quote/quote.html?symb=TSLA&source=story_quote_linkhttp://money.cnn.com/2013/07/17/investing/tesla-stock/index.html?iid=EL -
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Fisker Karma
Assembled in Uusikaupunki, Finland
Valmet Automotive
Battery issues plagued the vehicle:
Leaking coolant shorted battery caused fire
Recall issued for over 2,400 vehicles
Defective batteries
Cooling fan/line failures
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Biggest Drawback to EVs
Battery! Something we are all too familiar with
Li-Ion batteries
200+ Wh/kg energy density
80 to 90% charge/discharge
efficiency
$5000/146000 miles to charge or
$0.034/mile
~ 4 km (2.5 mi) /(kWh)
Toyota Prius
Short cycle lives (hundreds to a few
thousand charge cycles) Significant degradation with age
Expensive!
The Nissan Leaf battery pack will be
sold at a price of $18,000
Cost ~$9000 to produce
htt // t bl /2010/05/15/ i l f fit bl b th b tt t l t 18/
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