nutrulz

iTrader: (14)

So, Ted has your position changed as far a power potential of 100% alky, 50/50, or WI since this post.

https://www.evolutionm.net/forums/sh...6&postcount=16

Ted B

iTrader: (6)

This is almost purely academic, as those of us who run straight methanol run maps that remove enough gasoline to run appropriate AFRs with the injection activated. My engine wouldn't even run otherwise.



If you find that shocking, stick around this board awhile. . .


My hardware features a lean-run-protect algorithm - a wise investment.


Practicality is an important element of what is a viable option for a street car, and I don't follow why removing the engine to dyno would be required. While your opinions in this matter may (or may not) be more viable than not, I'd have to have case studies with engine specifics, mapping data, and dyno data before I'd take such a leap of faith, and preferrably with gasoline, high-perf automotive engines (not diesel).



My position on certain things evolves with experience, derived from both first and second-hand observations. As for my position in this instance, it's definitely changed in the past 1.5 years. If my opinions never changed, either I'd be an idiot, or I'd be so knowledgeable that participating in this forum would be a waste of my time. Obviously, neither is correct!

Richard L

iTrader: (5)

It has been great to taking part in this discussion, just wish more would join in.

I can conclude WI and WA will both contribute to extending engine's power capability, just does it differently. One day, you will have materials that can work up to 5000C and fuel have an octane rating of 500 point or more. Even then, there will still be people injecting water/alcohol to extend the barrier - human nature.

I like to point out water, as a non-combustible and non-miscible, will not impede combustion. Put a few drops of gasoline on a pool of water, it will burn. It is a common mis-conception that water puts out fire - not true. Water will not put out a gas station fire. It will however lower the temperature of the core.

However, a non-combustible liquid that is miscible with gasoline will suppress combustion.

Richard L

iTrader: (5)

nutrulz

iTrader: (14)

Just wondering, I came across that looking for other info so I had to ask.

Richard L

iTrader: (5)

Sorry I have missed your post. Better late than never.

If you lower timing, a large part of the cylinder pressure will go out of the exhaust port. This is one draw back of water inejction, it actually slow down the burnt rate (same effec as the race fuel). You need to advance timing to compensate.

There are chemicals such as propyleneoxide (PO), will accelerate the flame speed. I was told of this chemical some time ago - added too much may leave you sump pan at the start line. I believe it is a banned chemical on drag strips. Ideally, if the water and PO can be mixed together, it will be any ideal partnership. Unfortunatelt, PO dis not miscible in water, but will dissolve in alcohol. So if you want to experiment on retarded timing, run 50/50 plus PO(%?) may achieve your goal.


With WI, you just jame as much in as possibleand let water to control the cylinder temperature. This practice is a bit extyreme, but if you want massive toque, thisisone way to achieve - you also need a very powerful ignition system, magneto or a mini-welder.


Pure Methanol: timing and in-cyclinder temperature is the limitation for pure methanol It will go a long way before reaching this limit. But if you injection pure methanol to a gasoline fuel engimne, it is a good compromised.

Water: more boost and advance timing and powerful spark.