Re: Turbocharging for economy
[Re: feets]
#1085128
10/11/11 03:31 PM
10/11/11 03:31 PM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Now you guys went and made him angry.
"use it 'till it breaks, replace as needed"
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Re: Turbocharging for economy
[Re: feets]
#1085130
10/11/11 04:35 PM
10/11/11 04:35 PM
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Joined: Feb 2003
Posts: 4,953 Houston, Texas
TheOtherDodge
master
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master
Joined: Feb 2003
Posts: 4,953
Houston, Texas
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Quote:
I'm out of this one.
Maybe your blood pressure will go down some then! Geez, it's just a web board with a question...
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Re: Turbocharging for economy
[Re: Mr.Yuck]
#1085134
10/17/11 12:51 PM
10/17/11 12:51 PM
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Joined: Dec 2003
Posts: 22,696 Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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I guess the First law of thermodynmics does not apply to turbos. I always thought heat/energy sent out the exhaust was wasted and deducted from the total efficency of the engine. I also thought using that wasted exhaust heat and energy to spin a turbo was beneficial to improving cylinder filling. I also thought it if it took x amount of gallons of fuel to move a car y amount of miles and z amount of heat went out the exhaust, by lowering z I could go Y+ miles or use x less gallons. Guess I was wrong. http://en.wikipedia.org/wiki/First_law_of_thermodynamics
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Turbocharging for economy
[Re: jcc]
#1085135
10/17/11 04:09 PM
10/17/11 04:09 PM
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Joined: Jan 2003
Posts: 6,608 Indiana
EV2DEMON
The Camaro Kid
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The Camaro Kid
Joined: Jan 2003
Posts: 6,608
Indiana
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Quote:
I guess the First law of thermodynmics does not apply to turbos. I always thought heat/energy sent out the exhaust was wasted and deducted from the total efficency of the engine. I also thought using that wasted exhaust heat and energy to spin a turbo was beneficial to improving cylinder filling. I also thought it if it took x amount of gallons of fuel to move a car y amount of miles and z amount of heat went out the exhaust, by lowering z I could go Y+ miles or use x less gallons.
Guess I was wrong.
http://en.wikipedia.org/wiki/First_law_of_thermodynamics
That's not necessarily wrong, but, again, fails to account for the fact that while traveling at low-load highway speeds, a turbocharged IC gas engine is still making vacuum and not seeing any boost or associated benefits. So, the heat passing through the turbo and out the exhaust is still "wasted".
Pretty sure that was covered on the first page though.
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Re: Turbocharging for economy
[Re: jcc]
#1085138
10/18/11 12:15 AM
10/18/11 12:15 AM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
master
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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No, It's because if it was making boost it would be accellerating. If it's not making boost it's a parasitic loss. IF YOU ADD MORE AIR YOU NEED MORE FUEL.
"use it 'till it breaks, replace as needed"
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