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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

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