Nitrous to increase turbo efficiency
Nitrous to increase turbo efficiency
(OP)
Turbo-diesel application. Under augmented boost, around 34 psi at discharge, I am experiencing severe loss in compressor efficiency. Discharge temps right at 600 F. Calculated around 60% efficiency.
Part of the problem is that IAT is caught up in a thermal feedback loop, and can rise as high as 200 degrees, 100 over ambient. With a CAI this can be minimized. AND
I had considered WMI pre-compressor to cool ambient, and help raise the efficiency of the charger, also pre-cooling air for the CAC (I know, I know... but the truck will overheat because the CAC, which is in front of the radiator, is heating the stack ambient to 200 degrees, and overheating the vehicle)
I am concerned with blade damage. Will Nitrous be a better medium to cool charge pre-turbo? What kind of cooling value will it have compared to water?
Part of the problem is that IAT is caught up in a thermal feedback loop, and can rise as high as 200 degrees, 100 over ambient. With a CAI this can be minimized. AND
I had considered WMI pre-compressor to cool ambient, and help raise the efficiency of the charger, also pre-cooling air for the CAC (I know, I know... but the truck will overheat because the CAC, which is in front of the radiator, is heating the stack ambient to 200 degrees, and overheating the vehicle)
I am concerned with blade damage. Will Nitrous be a better medium to cool charge pre-turbo? What kind of cooling value will it have compared to water?





RE: Nitrous to increase turbo efficiency
I don't think you are seeing an effiency loss, the compressor puts up a constant head or it will throw the gas up in the aira fixed number of feet. To convert feet into pressure you multiply the density of the fluid times that number of feet and divide by 144 to convert from PSF to PSI. The warmer the air the lower the density so by cooling the air it gets cdenser and the discharge pressure goes up.
They make CO2 sprayers will help as would Nitrous, but CO2 is safer and cheaper.
RE: Nitrous to increase turbo efficiency
RE: Nitrous to increase turbo efficiency
I would never recomend injecting a hydralic like water into a 18:1 compression engine. Nitrous and diesels have a unique relationship that hinges on self destruction. Sure diesels don't run "lean" but they do melt pistons. Have you considered a water to air IC instead? or some kind of CO2 cooling IC or CO2 cooled compressor housing.
RE: Nitrous to increase turbo efficiency
Yes I have considered a W2A.
You say nitrous and diesel is a problem? Timing issue? EGT?
RE: Nitrous to increase turbo efficiency
Nitrous and diesel have worked well for some of our customers such as spraying a 40-70hp dry shot into a 7.3L powerstroke running 20lbs of boost. when they step upto more than that we get pictures of pistons that have melted. depending on your engine whether electronic or mechanically injected. Timming is locked in by the injection pump. not something easy to retard when nitrous is on.
RE: Nitrous to increase turbo efficiency
I can change timing at will with software.
My objective is to cool more than it is to augment power. I just figured maybe the nitous would absorb a lot of heat for a small charge. Maybe I should look at atomizing diesel across the compressor :)
RE: Nitrous to increase turbo efficiency
RE: Nitrous to increase turbo efficiency
RE: Nitrous to increase turbo efficiency
How does propane affect optimized timing?
RE: Nitrous to increase turbo efficiency
RE: Nitrous to increase turbo efficiency
RE: Nitrous to increase turbo efficiency
RE: Nitrous to increase turbo efficiency
The effect on combustion delay and burn rate is my main concern. I don't want to cause MEP spikes at TDC. Some kind of timing retard would be prescribed. But I can only guess what that would be.