Legitamate N20 question....
12-06-2002, 03:40 AM
#1
Supreme Member
Thread Starter
Legitamate N20 question....
and theoretical nonsense....
lets just say the cylinder is completelly empty of all fuel/air. now lets say we dump some n20 in there, along with the proper amount of fuel. but theres nothing else in there. only the N20 and the fuel. ignite it. what happens?
what im getting at is this...
depending on VE% at the time of the N20 shot, and during 100%+ VE periods (like during supercharging) what is the effect of the "extra air" besides just being "extra air", does it serve an additional purpose of "softening" the ignition or combustion process? or is it just extra.
lets say it directly influences the "hardness" of the N20 "hit". cushions it, so to speak. "waters down" maybe works better for what im trying to figure out. does that mean more VE% during N20 = a softer N20 hit? okay obviouselly running 11 PSI of boost and a 250 shot of N20 is borderline BAD for pump gas and engine longevity... does that mean lowering the boost will then have the adverse affect? or will THAT Soften the N20 "hit"?
see what doesnt make sense to me is that adding more air/fuel (VE%) seems to "wake up" a N20 "hit". but not having all the extra VE% during combustion makes for a hotter combustion and actually seems to worsen detonation. like my initial example... nothing but N20 and Fuel... what would happen? well I can imagine a big hole in a piston. obviouselly adding fuel/air "softens" the hit. but it also seems to "wake it up". So we go from burning holes in the piston to making gobs of power. which contradicts the whole "power" needs strong engine parts. but it DOES. what am I missing? there is some other variable no one is thinking of here... there is somthing im not getting... its theoretical nonsense. we dont know why it works, but it works.
lets just say the cylinder is completelly empty of all fuel/air. now lets say we dump some n20 in there, along with the proper amount of fuel. but theres nothing else in there. only the N20 and the fuel. ignite it. what happens?
what im getting at is this...
depending on VE% at the time of the N20 shot, and during 100%+ VE periods (like during supercharging) what is the effect of the "extra air" besides just being "extra air", does it serve an additional purpose of "softening" the ignition or combustion process? or is it just extra.
lets say it directly influences the "hardness" of the N20 "hit". cushions it, so to speak. "waters down" maybe works better for what im trying to figure out. does that mean more VE% during N20 = a softer N20 hit? okay obviouselly running 11 PSI of boost and a 250 shot of N20 is borderline BAD for pump gas and engine longevity... does that mean lowering the boost will then have the adverse affect? or will THAT Soften the N20 "hit"?
see what doesnt make sense to me is that adding more air/fuel (VE%) seems to "wake up" a N20 "hit". but not having all the extra VE% during combustion makes for a hotter combustion and actually seems to worsen detonation. like my initial example... nothing but N20 and Fuel... what would happen? well I can imagine a big hole in a piston. obviouselly adding fuel/air "softens" the hit. but it also seems to "wake it up". So we go from burning holes in the piston to making gobs of power. which contradicts the whole "power" needs strong engine parts. but it DOES. what am I missing? there is some other variable no one is thinking of here... there is somthing im not getting... its theoretical nonsense. we dont know why it works, but it works.
12-07-2002, 06:28 AM
#2
Supreme Member
Air is what? 70-80% nitrogen. 20 % oxygen....N2O is something like 60% nitrogen and 36+% oxygen.
It is the larger amount of nitrogen in air that buffers or slows
the hit as you say.
Also the lesser oxygen concentration causes a slower Hit.
Consider water injection to temper the combustion during high n20 /boost.
Water buffers combustion and absorbs a lot of heat when it changes state to steam. This smooths out and extends the "push" on the piston. Lowering the peak temp/pressure ( major cause of detonation) and extends/ increases the average combustion pressure. A mix of water and alcohol (methanol) allow the best intercooling/ buffering and power.
This will allow more boost, n2o, optimum timing and reliability.
While requireing less overfueling (boost enrichening) too.
Try it.
It is the larger amount of nitrogen in air that buffers or slows
the hit as you say.
Also the lesser oxygen concentration causes a slower Hit.
Consider water injection to temper the combustion during high n20 /boost.
Water buffers combustion and absorbs a lot of heat when it changes state to steam. This smooths out and extends the "push" on the piston. Lowering the peak temp/pressure ( major cause of detonation) and extends/ increases the average combustion pressure. A mix of water and alcohol (methanol) allow the best intercooling/ buffering and power.
This will allow more boost, n2o, optimum timing and reliability.
While requireing less overfueling (boost enrichening) too.
Try it.
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