Devilsown Methanol Alcohol Water Injection - View Single Post

Terry Syd · 05-15-2008

Actually, that is what I theorised may happen, but I needed some emperical evidence to support it.

My theory is that the liquid through the turbo becomes completely vaporised, and then the post-turbo nozzle dropplets make it to the engine largely intact. There would still be some vaporisation of the methanol in the post-turbo nozzle discharge as methanol can still vaporise in water saturated air.

Since I was using a M3 post-turbo before going to the M1/M2 combination, I might be able to get by with a M2/M3 combination.

Here is the problem I see with this set-up - pressure. As Dvldoc has mentioned the M1, M2, and M3 will work above 200 psi for good atomisation so that the droplets don't erode the compressor wheel. However, once we increase the flow above the M3 level the pressure drops below 200 psi. So, as in your case with the M2/M4 you are effectively running an M6.

Perhaps Dvldoc can give us an idea about droplet size at the pressure level of an M6.

05-15-2008	#14 (permalink)
Terry Syd Alcohol Holic Join Date: Nov 2007 Posts: 107	Re: Pre turbo nozzle placement Actually, that is what I theorised may happen, but I needed some emperical evidence to support it. My theory is that the liquid through the turbo becomes completely vaporised, and then the post-turbo nozzle dropplets make it to the engine largely intact. There would still be some vaporisation of the methanol in the post-turbo nozzle discharge as methanol can still vaporise in water saturated air. Since I was using a M3 post-turbo before going to the M1/M2 combination, I might be able to get by with a M2/M3 combination. Here is the problem I see with this set-up - pressure. As Dvldoc has mentioned the M1, M2, and M3 will work above 200 psi for good atomisation so that the droplets don't erode the compressor wheel. However, once we increase the flow above the M3 level the pressure drops below 200 psi. So, as in your case with the M2/M4 you are effectively running an M6. Perhaps Dvldoc can give us an idea about droplet size at the pressure level of an M6.