Robin Ream wrote:

Hi Paul,

    What are the exhaust temperature ranges for the rotary in comparison

to the piston engines?

Robin

About 200 F higher in the 2nd and 3rd gen engines but about the same in

the

RX8 engine.

Paul Lamar

Robin Ream wrote:

    What combination of things appears to account for the lower temperature
of the RX8 engine exhaust?  -  Surely it's not all turbo since prior engines
had turbos too, so is it burning less fuel and burning it more efficiently,
or is there some other explanation?
Robin

I suspect more exhaust heat is going into the cooling system due to the
circuitous route of the side exhaust. Also the exhaust gas is a bit cooler
as the exhaust port opens somewhat later to extract a bit more energy
out of the fuel. Third, there are less unburned hydrocarbons to continue
to burn in the exhaust pipe as they are now trapped in the rotor housing
and recycled.

Paul Lamar
 
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