Subject: Oil/Coolant Porting
From: ACRE
Date: 3/1/2005, 5:12 PM


2. I must have missed the outcomes of Vance's support experiment, apart
from
what you just advised i.e. less than 3 hp that's good!
Is there anything else you can advise on, in regard to flow rates and
pressures at different RPM.
George ( down under)


First I want to commend you for all the pattern work you are doing on such
things
as the aircraft engine bell housing and your current project the aluminum
end housings.
This will eventually pay off big time in aircraft use of the wankel
engine.

I'll answer your questions this way if you don't mind.

Since Mazda and others have a billion man hours into developing the rotary
it is very wise to copy what they do exactly.  They have extensively
instrumented the engine to measure the temperatures of the metal
throughout.
It does not pay to fool with their design.

George Lendich wrote:

Paul,
Thanks for the encouragement, I'm doing my best!

I do believe your right with the water passages and my personal opining is
this passage is closed off to give better flow to the lower passages around
the spark plugs.
However the centre housing isn't closed-off (in this passage) and the
aluminium housings have rather larger holes in them compared to the
surrounding passages.

My conclusion is that the end housings restrict direct inlet flow and divert
this to the lower (hotter) passages and the centre housing
provides some flow to the rotor housings.

The problem is, as I se it is, with a single rotor, there isn't any centre
housing - so the best bet is to provide a limited or restricted flow in this
passage.
As I will be testing the end  housings on a single this may be the safest
thing to do.

George ( down under)


 
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