flyrotary@lancaironline.net Mailing List Archive

Jim,

The biggest volume is at BDC- anything past this is compression, it's not getting high until it goes past the inlet area; but it certainly is quite high at the 12:00 O'clock position where the direct injection is taking place.

Direct Injection has to be high to atomize the fuel particles finely enough to get complete combustion. Of course it has to be high to also counter the compression pressure at this stage.

George ( down under)

George,

I don't understand why "very high pressure" is needed for injection.

From the model that is shown, the injection seems to be timed while the rotor

is just transitioning from intake to compression(rotor at maximum volume point).

The pressure could be ambient or below ambient at this point not requiring any great pressure at all for injection.

Just my 0.02 worth.

Jim

--- On Fri, 9/5/08, George Lendich <lendich@optusnet.com.au> wrote:
Snip
 
Then there's the complexity of injection and the very high pressure of 
direct injection, as well as the associated hardware and much needed 
software to make it all work.

Those sorts of things tend to temper my enthusiasm or am I just jaded 
through old age.
George (down under)