see subject line.
educate me,
-sedition
"Up front there ought to be a man in black." -John Cash
LISTEN TO SLAYER
If I get another fuckin' bike stolen...
It's the fuel injection version of a carburettor, and the bigger it is, the more fuel flows through it and the faster the bike goes.
The throttle body is the mechanism where air comes in from the air filter and into the intake manifold.
In an TBI, or throttle body injection setup, the throttle body functions like a carb, as the fuel injectors sit in throttle body, and the air/fuel mix is sent into the manifold.
Today virtually all manufactuers (of cars and bikes) use "port" fuel injection, otherwise called EFI. Air is routed into the intake manifold, where it is mixed with gas via fuel injectors. The atomized mixture is then routed into the combustion chamber to be burned.
Bigger is not better with throttle bodies. They have to be matched according to several factors, including: fuel injector size, pressure regulator & fuel pump rates, intake port length & size, cam size & timing, ignition timing, exhaust flow, head port flow, etc. etc. etc.
All parts of the fuel system should be matched to yeild a stoichiometric (fancy word for 'ideal') air:fuel ratio. For gas engines, the ratio is 14.6 parts air to 1 part gas. This condition will lead the fuel and o2 to be completely consumed, resulting in more efficiency, power and reduced emissions.
In my exerience it's generally best to use a proven combination of parts, usually selected by the manufacturer, aftermarket tuner, or otherwise "wicked smaht" person.
Andrew
03 Suzuki SV650
Motor is a air pump.
More air in means more power out........
Its like breathing through a straw. The bigger the more air you get.
-Suf Daddy
Suf Daddy.
Originally posted by ancosta
The throttle body is the mechanism where air comes in from the air filter and into the intake manifold.
In an TBI, or throttle body injection setup, the throttle body functions like a carb, as the fuel injectors sit in throttle body, and the air/fuel mix is sent into the manifold.
Today virtually all manufactuers (of cars and bikes) use "port" fuel injection, otherwise called EFI. Air is routed into the intake manifold, where it is mixed with gas via fuel injectors. The atomized mixture is then routed into the combustion chamber to be burned.
Bigger is not better with throttle bodies. They have to be matched according to several factors, including: fuel injector size, pressure regulator & fuel pump rates, intake port length & size, cam size & timing, ignition timing, exhaust flow, head port flow, etc. etc. etc.
All parts of the fuel system should be matched to yeild a stoichiometric (fancy word for 'ideal') air:fuel ratio. For gas engines, the ratio is 14.6 parts air to 1 part gas. This condition will lead the fuel and o2 to be completely consumed, resulting in more efficiency, power and reduced emissions.
In my exerience it's generally best to use a proven combination of parts, usually selected by the manufacturer, aftermarket tuner, or otherwise "wicked smaht" person.
Well said. Kudos!
You, sir, are no fishOriginally posted by ancosta
The throttle body is the mechanism where air comes in from the air filter and into the intake manifold.
In an TBI, or throttle body injection setup, the throttle body functions like a carb, as the fuel injectors sit in throttle body, and the air/fuel mix is sent into the manifold.
Today virtually all manufactuers (of cars and bikes) use "port" fuel injection, otherwise called EFI. Air is routed into the intake manifold, where it is mixed with gas via fuel injectors. The atomized mixture is then routed into the combustion chamber to be burned.
Bigger is not better with throttle bodies. They have to be matched according to several factors, including: fuel injector size, pressure regulator & fuel pump rates, intake port length & size, cam size & timing, ignition timing, exhaust flow, head port flow, etc. etc. etc.
All parts of the fuel system should be matched to yeild a stoichiometric (fancy word for 'ideal') air:fuel ratio. For gas engines, the ratio is 14.6 parts air to 1 part gas. This condition will lead the fuel and o2 to be completely consumed, resulting in more efficiency, power and reduced emissions.
In my exerience it's generally best to use a proven combination of parts, usually selected by the manufacturer, aftermarket tuner, or otherwise "wicked smaht" person.
in this case, that person would be you. thanks for ed-u-ma-cating me.Originally posted by ancosta
or otherwise "wicked smaht" person.
-chr|s sedition
"Up front there ought to be a man in black." -John Cash
If I get another fuckin' bike stolen...
ancosta: could you be a bit more specific???
Good descript!!!
Did you grit your teeth and try to look like Clint Fuckin' Eastwood?
Or did you lisp it all hangfisted like a fuckin' flower?
E lectronic F uel I njection
Nozzles at each cylinder are
Multi port fuel injection
Seperate nozzles just above intakes so no gas wetted down the inside of a manifold so computer give tree hugger gas amount at each firing not the 12 to 1 for max power.
Also you always want the air after leaving the air cleaner to stay moving with inertia so that the thottle bodies one you control and one the computer controls open at a rate the engine can inhale so no "bog"
Glen Beck is John the Baptist
Sorry got a little rainman with my answer. One of my biggest character defectsOriginally posted by Stoneman
ancosta: could you be a bit more specific???
Good descript!!!
Andrew
03 Suzuki SV650
Not at all! it would be a flaw I had asked you if you wanted a drink and replied with something that in depth...Originally posted by ancosta
Sorry got a little rainman with my answer. One of my biggest character defects
Did you grit your teeth and try to look like Clint Fuckin' Eastwood?
Or did you lisp it all hangfisted like a fuckin' flower?
YES, almost all vehicles have EFI (Electronic Fuel INjection) but I'm not sure about the rest of your statementOriginally posted by ancosta
Today virtually all manufactuers (of cars and bikes) use "port" fuel injection, otherwise called EFI. Air is routed into the intake manifold, where it is mixed with gas via fuel injectors. The atomized mixture is then routed into the combustion chamber to be burned.
some vehicles have multi-port fuel injection, some have throttle body injection
on my bimmer I have individual injectors for each cylinder (multi-port) on my winter bomb chevy, it's one injector in a throttle body
RandyO
IBA#9560
A man with a gun is a citizen
A man without a gun is a subject LETS GO BRANDON
I thought that it rolled off in the early 90's. Maybe some of the pushrod motors still used it later than that? I think it would be tough to find a OHC motor using TBI, but that is more of a guess.Originally posted by RandyO
YES, almost all vehicles have EFI (Electronic Fuel INjection) but I'm not sure about the rest of your statement
some vehicles have multi-port fuel injection, some have throttle body injection
on my bimmer I have individual injectors for each cylinder (multi-port) on my winter bomb chevy, it's one injector in a throttle body
Andrew
03 Suzuki SV650
It doesn't matter what type of injection system or carburator it has, it still has a throttle bodyOriginally posted by RandyO
YES, almost all vehicles have EFI (Electronic Fuel INjection) but I'm not sure about the rest of your statement
some vehicles have multi-port fuel injection, some have throttle body injection
on my bimmer I have individual injectors for each cylinder (multi-port) on my winter bomb chevy, it's one injector in a throttle body
Yamaha
http://auto.howstuffworks.com/fuel-injection.htm
They 'splain it better than I can
Andrew
03 Suzuki SV650
You spelled that wrongOriginally posted by Degsy
carburettor
G-man
Gerard
there's nothing called a throttle body on my old Vanagon or bimmer.... air flow meter? the injectors go right into the head... both have antiquated Bosch K jetronicOriginally posted by R7
It doesn't matter what type of injection system or carburator it has, it still has a throttle body
RandyO
IBA#9560
A man with a gun is a citizen
A man without a gun is a subject LETS GO BRANDON
What's your throttle cable hooked to??
Yamaha
Your metamorph catapiller is residing in your manifolds throttle body
Glen Beck is John the Baptist
the air flow meterOriginally posted by R7
What's your throttle cable hooked to??
RandyO
IBA#9560
A man with a gun is a citizen
A man without a gun is a subject LETS GO BRANDON
I think with bikes maybe they are using the terms different?
The throttle body is the housing with the throttle butterfly in it right? It opens with throttle input to allow more air in? Same place where the mass air meter is in a car, but the bike is missing the air flow sensor?
Originally posted by benVFR
The throttle body is the housing with the throttle butterfly in it right? It opens with throttle input to allow more air in?
You sir, are correct
BTW, my bike has a twist grip on it and not a twist throttle
Yamaha
But my point is I DON"T have throttlebody injection,Originally posted by R7
You sir, are correct
BTW, my bike has a twist grip on it and not a twist throttle
RandyO
IBA#9560
A man with a gun is a citizen
A man without a gun is a subject LETS GO BRANDON
I know you don't, you told us that a few posts upOriginally posted by RandyO
But my point is I DON"T have throttlebody injection,
But it does have a thottle body
Yamaha
If you want to call it that, but if you go to a parts store looking for one you won't get one,Originally posted by R7
I know you don't, you told us that a few posts up
But it does have a thottle body
RandyO
IBA#9560
A man with a gun is a citizen
A man without a gun is a subject LETS GO BRANDON
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