or understand the reactions of water vapor in a combustion cycle
This topic is meant to be an evolution of the Pantone system, if misinterpreted
Introduction:
The EGR valve is first of all a way for manufacturers to reduce the flame T ° and thus limit Nox, but it is also a great way to reinject water vapor from the combustion of gasoline. or diesel, and it gives this:
all in detail here:
Capt_Maloche wrote:WATER VAPOR INJECTION, WHY IT WORKS!
Description: GO's perfect combustion reaction (nitrogen is not present)
C2H16 34 + = 49 2 O32 CO2 + 34 H2O
adding water vapor first (Important) of the combustion cycle spectacular pollution
in fact it is these two arch-known reactions that explain these results:
H2O + C = CO + H2 : the incandescent soot particles (the "bad burns") react with the water vapor, this requires a temperature above 950 ° C and if possible below 1300 ° C, hence the difficulties encountered by our amateur testers on all these systems
CO + H2O <> CO2 + H2 : CO from the first reaction and imperfect combustion reacts with steam to supply hydrogen; as the T ° must be greater than 950 ° C otherwise there will be excess CO
H2+2O2<>2H2O The hydrogen produced by the first two reactions contributes to the destruction of the unburnt, to maintain the explosion longer and thus to increase the yield.
Basically, unburned are converted into energy before becoming
IMPORTANT NOTE:
the fact is also that, since the water vapor is injected at the beginning of the combustion cycle, the available C which has not yet reacted (and which would have reacted in the normal cycle) does not have the time to finish completely. its reaction which allows the water vapor already present to act according to the first reaction
the advantage is also that if CO is produced during the reaction, it will be immediately transformed !!
The amount of water vapor must therefore be regulated by a computer, which our builders start with the EGR valves.
What I have seen by dismantling the EGR valve and the air intake system of a recent vehicle: see in the middle of the page Diesel-car-eat-less-with-a-little-of-sp95-t5849-460.html
The Pantone system, is a way to inject evaporated water thanks to the lost energy of the exhaust, it is a good thing.
now, refueling + a tank of water is not easy on the highway
that's why the Pantone is not the ideal solution
Now that particulate filters are mandatory from next month, it will be easier to recover the steam at the outlet of the muffler, here is the challenge