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Volvo security code
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Scott Gardner
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Posted: Sun Oct 09, 2005 5:06 pm    Post subject: Re: Volvo security code Reply with quote

On 8 Oct 2005 22:38:15 -0700, mmdir2005@yahoo.com wrote:

Quote:

Increase air/fuel mixture means "increase" fuel. As amount of air
going into
engine, amount of fuel has to do up, therefore this incrases the fuel
consumption.
Your logic is not true. There is no study suggests supercharger or
turbocharger
good for fuel consumption. you just like sound . That's all.

I was talking about increasing **cylinder pressure**, not air/fuel
ratio. You can keep the amount of air and fuel the same, but if you
compress it more before you ignite it, you'll get more power and
higher efficiency.

And the effects on fuel economy of increasing cylinder pressure are
well-documented, whether you increase it by raising the engine's
compression ratio, or by adding a supercharger/turbocharger. Look it
up for yourself if you don't believe me.


--
Scott Gardner

"The most exciting phrase to hear in science, the one that heralds the most discoveries, is not Eureka! (I found it!) but 'That's funny..." (Isaac Asimov)

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Chad Wahls
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Posted: Mon Oct 10, 2005 7:20 pm    Post subject: Re: Volvo security code Reply with quote

<mmdir2005@yahoo.com> wrote in message
news:1128836295.174327.92100@g49g2000cwa.googlegroups.com...
Quote:

Increase air/fuel mixture means "increase" fuel. As amount of air
going into
engine, amount of fuel has to do up, therefore this incrases the fuel
consumption.
Your logic is not true. There is no study suggests supercharger or
turbocharger
good for fuel consumption. you just like sound . That's all.


It makes the engine more efficient so it produces more power for given
energy input (fuel,air). IF driven the same a more efficient engine will
get better mileage regardless of displacement.

Chad
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