[RustyLugNut]

Originally Posted by oil pan 4

And that amount is and those parameters are what?
Because no one seems able or willing to divulge that info.

Suffice it to say that the engine cycle can be measured in milli-seconds while chemical combustion reactions can be measured in nanoseconds. A single radical can cause the production of another radical and so forth in a geometric progression that results in a significant change of radical concentration by the time lapse of only a milli-second.

So, time is a parameter. The more time, the more pre-combustion reactions can occur. So is turbulence. The greater the turbulence the greater the energy available for reactions. So is temperature. It is common knowledge that reactions proceed more rapidly with increasing temperature.

A proper application will see positive results if these parameters are taken into account - most HHO applications do not.

Also EGR doesn't introduce traces of exhaust gases into the engines intake tract, its more like 5% to 15% of the intake volume.

There is a large amount of research dealing with trapped EGR as it occurs in common engine operation regimes. The percentages are less than 1%.

Yes for diesel engine only. It does not work on gas engines.
It does work on diesel and gas turbines but not because of any of this sillyness:

Do you understand why it works in diesels? Please give me your understanding of how this works. Do you understand that a sub 1:100 mass ratio of water to gasoline can show an increase in BMEP?

And pretty much everything I have said is mundane academia. "Sillyness" must be your word for things you don't understand. Please use terms with more clarity.

Water injection only shows fuel economy losses when added to production gasoline engines, no matter if its a single cylinder gasoline generator or 2000+ fuel injected gasser.

Again, it depends on the mass ratio and the above mentioned parameters.

It may be possible to build a gas engine that can benefit from water or water/methanol injection but the vehicle driveability will be greatly compromised and engine longevity my suffer if the additional liquid is allowed to run dry.

Why such an engine could not be built is not due to a lack of supporting physical principles. I have given enough reasons to build it. It is just an exercise in engineering it.