I have seen some old posts regarding DEI's CryO2 system, and if it actually adds HP, and how. I am a Mechanical Engineer that actually liked Thermodynamics. To the best of my ability I will describe mathmatically where the HP comes from (what I feel to be true, someone correct me if I am wrong).
First off, CryO2 does not directly inject anything into your engine nor should it harm your engine in any way. It simply cools the air before it enters your engine. Carbon Dioxide (in the liquid form) is injected into a metal "holder" that mounts inside of your stock intake piping. For turbo applications, after the IC and just before the intake manifold would be best (what I might do). It will cool the air at the very end of it's "travel". The same reason for intercoolers, but intercoolers will only cool the air to a certain extent...remember it heats up as it passes through the turbo. The IC just brings the air temp back down after the temp rise at the turbo, (To what degree I do not know). So here is a bit of math.
Mass of air entering engine (in pounds)= (P1*V1)/(R*T1)
where:
P1 = initial pressure of air
V1 = initial volume of air (in cubic feet)
R = gas contant = 53.3 for air
T1 = initial temperature of air
For my application (MSP)
P1 = 14.7+8.0 psi = 22.7 psi = 3269 psf <----you can see why psi = HP
V1 = 2.0L = 0.071 cubic feet
T1 = well.....this is what the CryO2 will change
Remember it will be in degrees R which is degrees F + 460.
The greater the pressure, the lower the temperature, the higher mass of air, the more power. Internal E = C*m*(T2-T1)
where C is another constant for air. T2 (after compression) will be approximately the same (I won't do the math for you because this is getting long), so T2-T1 will be larger with a smaller T1. And with a higher m (mass of air), you get an even higher value. They are all minute changes but add up trust me. I calculated 15-20 extra horses on a computer application I wrote years ago that solves for HP and lets you change any factor you want.
So there it is. With a DIY kit (which I think is possible accept for the intake pipe attachment) it is cheap HP at the touch of a button. Oh yea....it will purge off the extra CO2 after it passes through the "holder" in the intake. This purge can be put anywhere. Sounds like I might be having some fun with this. It will at least make for a fun project. I am bored now. This thread is long. I am a loser....
Attached is a pic of the "holder" I was referring to. Note the aerodynamics
You would need a tank, flexible stainless steel hose, a powered solenoid, and purge valve. The solenoid opens on push of button, CO2 gets put in system, and purges at the end of it's trip. (DEI also sells something that cools the fuel, and cools the IC). Cooling the IC is prob the best bet, but you can further cool the air even closer to where it enters the engine if you wish.
Ok now I am done. Still a loser....
First off, CryO2 does not directly inject anything into your engine nor should it harm your engine in any way. It simply cools the air before it enters your engine. Carbon Dioxide (in the liquid form) is injected into a metal "holder" that mounts inside of your stock intake piping. For turbo applications, after the IC and just before the intake manifold would be best (what I might do). It will cool the air at the very end of it's "travel". The same reason for intercoolers, but intercoolers will only cool the air to a certain extent...remember it heats up as it passes through the turbo. The IC just brings the air temp back down after the temp rise at the turbo, (To what degree I do not know). So here is a bit of math.
Mass of air entering engine (in pounds)= (P1*V1)/(R*T1)
where:
P1 = initial pressure of air
V1 = initial volume of air (in cubic feet)
R = gas contant = 53.3 for air
T1 = initial temperature of air
For my application (MSP)
P1 = 14.7+8.0 psi = 22.7 psi = 3269 psf <----you can see why psi = HP
V1 = 2.0L = 0.071 cubic feet
T1 = well.....this is what the CryO2 will change
Remember it will be in degrees R which is degrees F + 460.
The greater the pressure, the lower the temperature, the higher mass of air, the more power. Internal E = C*m*(T2-T1)
where C is another constant for air. T2 (after compression) will be approximately the same (I won't do the math for you because this is getting long), so T2-T1 will be larger with a smaller T1. And with a higher m (mass of air), you get an even higher value. They are all minute changes but add up trust me. I calculated 15-20 extra horses on a computer application I wrote years ago that solves for HP and lets you change any factor you want.
So there it is. With a DIY kit (which I think is possible accept for the intake pipe attachment) it is cheap HP at the touch of a button. Oh yea....it will purge off the extra CO2 after it passes through the "holder" in the intake. This purge can be put anywhere. Sounds like I might be having some fun with this. It will at least make for a fun project. I am bored now. This thread is long. I am a loser....
Attached is a pic of the "holder" I was referring to. Note the aerodynamics
You would need a tank, flexible stainless steel hose, a powered solenoid, and purge valve. The solenoid opens on push of button, CO2 gets put in system, and purges at the end of it's trip. (DEI also sells something that cools the fuel, and cools the IC). Cooling the IC is prob the best bet, but you can further cool the air even closer to where it enters the engine if you wish.
Ok now I am done. Still a loser....
