Hey Guys,

Another piece of the puzzle we must talk about is the heat transfer
through the rotor housing. We need to understand what we want this to
be. Lets take a look at some extremes

If we have a super low heat transfer value I assume we get higher rotor
surface temps and less heat transfer to oil which may negate the need
for rotor cooling. That's a benefit for sure and materials with such a
low transfer value tend to survive high heat well. What are the downside
to really hot rotor surfaces?

Assuming we get a super high heat transfer value I assume we get lower
rotor surface temps but might require increased oil cooling
requirements. Not such a benefit and also materials with high heat
transfer values tend to be rather weak.

I am just starting a conversation here on this topic and I might be
wrong on some of my assumptions. FEA modeling would be best for this but
a combustion chamber model would be needed as well. Also lets extend
this topic into the housing surfaces as well.

Rob Woods

Lubrication breaks down for apex seals.

Paul Lamar