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Article Comments - 2011 Chevy Volt: Will GM Get It Done?

24 messages, Last post on Apr 25, 2009 at 5:05 AM
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2011 Chevy Volt: Will GM Get It Done? - Most people view the GM EV1 as a dismal failure. Viewed from strictly a marketing perspective, they are right. (more)
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Replying to: morin2 (Mar 02, 2009 3:28 pm) So, if you have a 100 mile commute, first 40 = no fuel use, last 60 = perhaps less than 2 gallons (assuming 35 MPG) net 50 MPG without being limited. Actually the Volt would probably get better than that, basing the 35 MPG on more a work truck or SUV size vehicle...one developer says the extended range generator should get double the MPG of a standard combustion engine setup... http://www.rasertech.com/media/movies/html/news_articles_PHEV_truck.html Just my opinion of what would work best for folks like ME. The 40 mile range is ridiculous. GM's rationalization that "75% of people commute less than 40 miles" is equally ridiculous. Those who live so near their employers probably live in cities where they have transit options. The people who need realistic alternatives are those in rural areas who must commute long distance by car because there are no mass transit alternatives. What advantage is it to drive a Volt that loses its charge half way to your job? |
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Replying to: hoosieriusb (Sep 08, 2008 7:59 pm) I also remember a time when $20,000 for a car seemed out of sight. GM could win back my business with the right priced car using Volt techology. |
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| As a retired automotive engine engineer, I have a question that has not yet been addressed. Say you have driven your car past the initial 40 miles, you are on a trip, and you are coming into the Rocky Mountains for a long climb. We have this little 4 cylinder engine to get us up the mountain, a job that takes at least 3 times as much power as traveling on a flat road. The engine starts out with a 30% efficiency at creating mechanical power from gasoline. We now have the added inefficiency of at best 70% of converting mechanical power into battery charge, then converting battery charge into driving the wheels is another 30% loss. That puts us at a 15% overall efficiency for the gasoline engine in the Volt. Is it going to be able to make the long climb, and how could it possibly compete fuel economy wise with a 4 cylinder engine connected directly to the drivetrain, like in a Ford Hybrid? | |
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