SL55/63/65/R230 AMG: Sl55 Rules!!!!!!
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Joined: Nov 2002
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From: San Francisco
Bilal, you got only a part of the reason why cooler air gives greater HP.
Air is not just an inert gas, awaiting heat for expansion. About 18% of air is oxygen (but you knew that), and the combustion process in the engine (the combination of hydrocarbons in the fuel with the oxygen in the air) creates more gas than was present prior to combustion, as well as heating the inert gases (mostly nitrogen) which were drawn into the cylinder during the piston downstroke.
If the intake gas is cooler (as it is in the winter) it is denser. If it's denser, it has more oxygen molecules. Modern fuel injection systems sense this increased density and add more fuel to combine with the increased amount of oxygen. Thus the net effect of cooling the intake air is quite similar to boring out the engine - there is a larger quantity of fuel/air mixture to burn.
Your next assignment - find out how a modern fuel injection system senses the density of the incoming air. It is a marvelous piece of engineeering - elegant for both its simplicity and its accuracy.
Air is not just an inert gas, awaiting heat for expansion. About 18% of air is oxygen (but you knew that), and the combustion process in the engine (the combination of hydrocarbons in the fuel with the oxygen in the air) creates more gas than was present prior to combustion, as well as heating the inert gases (mostly nitrogen) which were drawn into the cylinder during the piston downstroke.
If the intake gas is cooler (as it is in the winter) it is denser. If it's denser, it has more oxygen molecules. Modern fuel injection systems sense this increased density and add more fuel to combine with the increased amount of oxygen. Thus the net effect of cooling the intake air is quite similar to boring out the engine - there is a larger quantity of fuel/air mixture to burn.
Your next assignment - find out how a modern fuel injection system senses the density of the incoming air. It is a marvelous piece of engineeering - elegant for both its simplicity and its accuracy.
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From: Moon
marta
Originally posted by White Knight II
Bilal, you got only a part of the reason why cooler air gives greater HP.
Air is not just an inert gas, awaiting heat for expansion. About 18% of air is oxygen (but you knew that), and the combustion process in the engine (the combination of hydrocarbons in the fuel with the oxygen in the air) creates more gas than was present prior to combustion, as well as heating the inert gases (mostly nitrogen) which were drawn into the cylinder during the piston downstroke.
If the intake gas is cooler (as it is in the winter) it is denser. If it's denser, it has more oxygen molecules. Modern fuel injection systems sense this increased density and add more fuel to combine with the increased amount of oxygen. Thus the net effect of cooling the intake air is quite similar to boring out the engine - there is a larger quantity of fuel/air mixture to burn.
Your next assignment - find out how a modern fuel injection system senses the density of the incoming air. It is a marvelous piece of engineeering - elegant for both its simplicity and its accuracy.
Bilal, you got only a part of the reason why cooler air gives greater HP.
Air is not just an inert gas, awaiting heat for expansion. About 18% of air is oxygen (but you knew that), and the combustion process in the engine (the combination of hydrocarbons in the fuel with the oxygen in the air) creates more gas than was present prior to combustion, as well as heating the inert gases (mostly nitrogen) which were drawn into the cylinder during the piston downstroke.
If the intake gas is cooler (as it is in the winter) it is denser. If it's denser, it has more oxygen molecules. Modern fuel injection systems sense this increased density and add more fuel to combine with the increased amount of oxygen. Thus the net effect of cooling the intake air is quite similar to boring out the engine - there is a larger quantity of fuel/air mixture to burn.
Your next assignment - find out how a modern fuel injection system senses the density of the incoming air. It is a marvelous piece of engineeering - elegant for both its simplicity and its accuracy.
Out Of Control!!
Joined: Jul 2002
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Originally posted by White Knight II
Your next assignment - find out how a modern fuel injection system senses the density of the incoming air. It is a marvelous piece of engineeering - elegant for both its simplicity and its accuracy.
Your next assignment - find out how a modern fuel injection system senses the density of the incoming air. It is a marvelous piece of engineeering - elegant for both its simplicity and its accuracy.
As for the next assignment, doesn't it use an O2 sensor?
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Joined: Dec 2002
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Originally posted by Wolfman
That's a strange comment...
I for one actually don't care much for the looks of the 575 and money has litttle to do with it.
As usual, it'a matter of taste and in my case, while I love driving fast but growing up in Germany also seeing (and in some cases experiencing) my share of high-speed accidents, a question of safety.
This is also the reason I never mind the SL to be as heavy as it is; with the structural strength you have a chance to walk away from it and not get folded in like an oreo cookie as in other convertibles. Seen that
I suggest never to crash a Ferrari Spider at higher speeds 
And there is that notion of practicality. A friend's 360 developed a clutch problem at 7500 miles. The car had to be put on a flatbed trailer and shipped off 500 miles to the next Ferrari dealer, taking it out of commission for a month.
That is actually a nice benefit to have a great car that can be serviced just about anywhere in the world...
Wolfman
That's a strange comment...
I for one actually don't care much for the looks of the 575 and money has litttle to do with it.
As usual, it'a matter of taste and in my case, while I love driving fast but growing up in Germany also seeing (and in some cases experiencing) my share of high-speed accidents, a question of safety.
This is also the reason I never mind the SL to be as heavy as it is; with the structural strength you have a chance to walk away from it and not get folded in like an oreo cookie as in other convertibles. Seen that
I suggest never to crash a Ferrari Spider at higher speeds And there is that notion of practicality. A friend's 360 developed a clutch problem at 7500 miles. The car had to be put on a flatbed trailer and shipped off 500 miles to the next Ferrari dealer, taking it out of commission for a month.
That is actually a nice benefit to have a great car that can be serviced just about anywhere in the world...
Wolfman
Gee I'm sorry, I didn't know we're talking about highspeed crash tests. In that case you're right, rather not be in a Ferrari. In fact rather not be in a McClaren, Koenigsegg, Murcielago, Pagani, or other death traps. BUT, WHICH WOULD YOU RATHER HAVE?
"A friend's 360 developed a clutch problem at 7500 miles. The car had to be put on a flatbed trailer and shipped off 500 miles to the next Ferrari dealer, taking it out of commission for a month"
Thanks for sharing ONE experience.
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996 Turbo
I've actually heard of out of comission Ferraris as beingpretty common. If a part is out of stock you need to wait a while. Ferraris factories are running 100% so everything is pushed for car production as much as possible.
I knew someone who had a 355 and had to wait 6 weeks for some minor parts to arrive. Take a look at a Ferrari workshop and ask them where they store cars that are awaiting repair.
The dealership questions comes into play of course in what area your in.
I knew someone who had a 355 and had to wait 6 weeks for some minor parts to arrive. Take a look at a Ferrari workshop and ask them where they store cars that are awaiting repair.
The dealership questions comes into play of course in what area your in.
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From: Texas
damn...you can drive the ferrari around everywehre and enjoy it...but one mistake/problem..got to wait forever until you can drive it again...that doesnt sound too cool
thats one con for a ferrari
thats one con for a ferrari
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From: Miami
I happan to love Ferrari and Also Mercedes They are 2 Different worlds no matter if the SL is faster its still not a ferrari and you dont get the same feel I would not flame ferrari nor MB the I would like to see the 575M vs the SL55 on a 65 Degree Day on the dragstrip with 2 expert drivers. Then see real time results the cars are both awsome matters what you want. Yes ferrari has realbility issues remeber no one uses the car for a daily driver.
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1M, F550M, F550B, F40, S600, 365GTC, DBSx2, etc.
White knight: wish I had known you had a 550. I've got one too - we had a little breakfast gathering for local owners. Got together in Half Moon Bay. Nothing formal or stuffy, just a few friends getting togethe for fun.
PM me your details and I'll let you know about the next one.
Frozen: I've been driving my 550 almost every day. Averaging about 1300 miles / month on it. Car is comfortable, reliable, and FAR more pleasant than the E55 or SL55 I took (the latter of which I borrowed for a week).
--Dan
PS: The ignorance or blatant brandism in this thread is pathetic - but then we expect that from certain individuals like Bilal, who can't see past a badge.
PM me your details and I'll let you know about the next one.
Frozen: I've been driving my 550 almost every day. Averaging about 1300 miles / month on it. Car is comfortable, reliable, and FAR more pleasant than the E55 or SL55 I took (the latter of which I borrowed for a week).
--Dan
PS: The ignorance or blatant brandism in this thread is pathetic - but then we expect that from certain individuals like Bilal, who can't see past a badge.
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Joined: Jul 2003
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From: Miami
Originally posted by bobafett
White knight: wish I had known you had a 550. I've got one too - we had a little breakfast gathering for local owners. Got together in Half Moon Bay. Nothing formal or stuffy, just a few friends getting togethe for fun.
PM me your details and I'll let you know about the next one.
Frozen: I've been driving my 550 almost every day. Averaging about 1300 miles / month on it. Car is comfortable, reliable, and FAR more pleasant than the E55 or SL55 I took (the latter of which I borrowed for a week).
--Dan
PS: The ignorance or blatant brandism in this thread is pathetic - but then we expect that from certain individuals like Bilal, who can't see past a badge.
White knight: wish I had known you had a 550. I've got one too - we had a little breakfast gathering for local owners. Got together in Half Moon Bay. Nothing formal or stuffy, just a few friends getting togethe for fun.
PM me your details and I'll let you know about the next one.
Frozen: I've been driving my 550 almost every day. Averaging about 1300 miles / month on it. Car is comfortable, reliable, and FAR more pleasant than the E55 or SL55 I took (the latter of which I borrowed for a week).
--Dan
PS: The ignorance or blatant brandism in this thread is pathetic - but then we expect that from certain individuals like Bilal, who can't see past a badge.
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1M, F550M, F550B, F40, S600, 365GTC, DBSx2, etc.
Bunch of picts in the OT forum. Too lazy to look for a link, but just do a search.
--Dan
Actually, there are some more picts here:
Picts
I hate how mbworld makes you put one pict per post. Annoying.
--Dan
Actually, there are some more picts here:
Picts
I hate how mbworld makes you put one pict per post. Annoying.
If there is a 575M with a good driver vs SL55 on the line, 575M is absolutely faster.
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