Direct Injection - Stratified

[Robert Harris]

Try some out of box thinking.  The propaganda is that Stratified Charge is to
facilitate burning an overall lean mixture thereby increasing milage.

The actual working is that a normal to richish mixture is first ignited and
this burning charge is then used to ignite a much more reluctant main charge.

Using a fuel scavenged pre-chamber ( one where the fuel is shot thru the pre
chamber into the main chamber and the ignition takes place in the pre-chamber)
, think about using two fuels.  The first - thru the prechamber, is an easy to
ignite, relatively fast burning fuel that will generate a nice flame jet and
readily ignite the main chamber.

The next, a slower burning, much harder to ignite main fuel that is admitted
to the cylinder in a more normal fashion.  What now happens is that the Flame
Jet lights off the slower burning main charge rather quickly and fast normal
combustion now occurs.

The pre-chamber fuel is something like say gasoline.  The main chamber is say
Methane ( Natural Gas ) for the economy minded.  No problem - just a little
complication.  

But suppose that the main mixture was very rich and it was something very hard
to ignite - such as a blend on alcohol and nitro-methane?   The prime power
limiting factor for such blends is how fast and how much can you get the fuel
lit off.  Even with super energy twin plug systems, much of the fuel does not
burn in the cylinder but finishes combustion in the exhaust pipes.  The Flame
Jet ( directly stolen - its still a stratified charge - just the fuel and
mixture considerations have changed ) could probably be used for a significant
increase in power.  

And nothing stops the pre chamber fuel from being something different like
gasoline from the main chamber and further, nothing stops you from using
mutually incompatible fuels in both chambers, since the only contact with each
other will be in combustion.   Contemplate gasoline with a heavy hydrazine
shot for the pre-chamber and mutually incompatible Nitro-Methane in the main.
Massive power effects from both - with no time for the slow incompatibility
products to form.

This is where learning how and why and not blanketly parroting the latest hype
pays off.  Its the out of box thinking that violates nothing but would never
be thought of that wins races and succeeds well whenever tried.  

Think about it.

1963 Ford C-600 Prison Bus Conversion "Home"
1971 Lincoln Continental 460 "Christine"
1972 "Whale" Mustang awaiting transplant
1978 Dodge Long Bed Peeek Up "Bundymobile"

Habaneros - not just for breakfast anymore