Re: [hreg] FUEL EFFICENT AUTOS: Toyota Prius & Other Hybrid Cars
If you didn't take your 92 civic to red line at least once a month, it
would have been dead with 50,000 miles on it. They gum up real bad if you
pussy foot them. I had one, my last car. Kept it for 13 years, put over
140,000 and never even changed the brake pads. My girl friend who now owns
it has put at least 20,000 more miles on it with no major work. I couldn't
figure out how to make my own fuel for it, so I bought a diesel.
At 11:42 AM 2/19/2006, you wrote:
>8:46am, Lunce wrote:
> > Paul, is that Honda Civic VX a hybrid?
>Nope. It's main tricks were low coeffecient of drag, low resistance rolling
>stock (and allow wheels), and a 4-valve per cylinder engine where one
>exhaust valve could be turned off while switching to a 22:1 fuel ratio from
>the normal 15:1.
>For those who don't know a bunch about engines: a normal engine burns fuel
>at a ratio of 15:1. That's 15 units of air to 1 unit of fuel, by weight. But
>that's not the most efficient ratio. The most efficient ratio is 22:1. But
>since a 22:1 burn ratio is more efficient, it means the combustion is
>hotter. That's dangerous from a longevity standpoint. So engines are dialed
>back to 15:1. The extra gas actually helps cool the engine, making it safer
>(again, from an engineering/longevity standpoint).
>While we debate gas vs ethanol and electric vs hybrid, the car manufacturers
>have known for at least 20 years (my Civic VX was a '92, and there's several
>years lead on new car design) how to handle a more efficient fuel ratio. And
>if they'd work on ceramic cylinder walls (that can take the heat much better
>that the cast iron walls of a normal engine), then they'd be able to get
>even more efficiency out of their engines.
>FWIW, I have a lead foot. I floor that car at practically every green light,
>and hit redline getting up to speed several times a day (it redlined at
>about 60mph in second gear!). The worst gas mileage I got out of it was
>about 32mpg on average, and the best, on long trips, was mid 50's. The car's
>got around 100,00 miles on it with no major engine work, and my mother's
>still driving it. Oh, and did I mention that it cost a lot less than a
>hybrid (not that they had hybrids in '92)?
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