In a message dated 8/11/2000 1:16:00 PM Pacific Daylight Time,
chuck@decaturnet.com writes:
<< um,
no
Displacemnt is measured by the volume of "open"space in the epichrod
with the rotor in it. >>
That's like saying "Displacement is measured by the volume of the open space
that is on the compression stroke at any given time." (on a piston engine)
Just because the other 2 chambers are not facing the sparkplugs doesn't mean
they shouldn't count.
<< They displace 654 cc per rotor (13B)
multipling by 1.4 is merely a tool used by the SCCA to specify Pressure
charged cars vs Naturally aspirated. >>
But the power developed by a supercharged car IS greater than that of a
normally aspirated car, so some multiplier needs to be used.
<< It isn't the Rotaries fault that a Piston engine is inferious by basic
design (some comapies have come in leaps and bound in Pston engine
technology ie Honda VTEC) >>
Nor is it the piston engine's fault that we have historically measured rotary
engine displacement by ignoring 4 out of 6 chambers.
<< there are three rotor faces, but the displacment between them is still
654cc (divide that by 3 and that is the per rotor face volume.) you are
mutiplying it by 9 in your calculations >>
654cc is the max volume of one chamber. There are 6 chambers. Do you get to
ignore all the cylinders that are at TDC and have essentially no volume when
measuring a piston engine? No. Turbocharged engines should have a
multiplier and the standard we use is 1.4. I don't see a problem with the
math...
<< You aren'y being pugniable about all this are you?
I am not, i am simply trying to help you understand the rotary from a
rotorhed. >>
Well, that's the funny part. I'm a rotorhead, too... I just see rotary
engine displacement a little more objectively than most rotorheads...
CHD
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