Adiabatic Wankel Type Rotary Engine


860616 R. Kamo, R. M. Kakwani, W. Hady ABSTRACT A new generation of
Wankel rotary engines that can offer multifuel capability, increased
fuel economy, and improved performance and reliability could have a
profound influence on the design of future power plants for aircraft,
automotive and other applications. ...The recent advances in
adiabatic diesel engine technology have potential to improve the
Wankel rotary engine. In this paper, the potential benefits of
adiabatic Wankel engine and advanced concepts like- advanced
turbochargers, high compression ratio, faster combustion, and reduced
leakage have been assessed. ...In this paper, the potential benefits
of adiabatic Wankel engine and advanced concepts like- advanced
turbochargers, high compression ratio, faster combustion, and reduced
leakage have been assessed. A Wankel simulation model was used to
predict performance of the adiabatic Wankel engine with these
advanced concepts- predicting an overall improvement of 25.5% in BSFC
and 34.5% in power output.

Jose Gros-Aymerich

Madrid, Spain


"an overall improvement of 25.5% in BSFC and 34.5% in power output"

Pure BS!!!!  ROFL

A 5% improvement would be a monumental achievement!

Paul Lamar



This document on adiabatics?

Steve Carlisle

Wrong Authors.  860616 looks like an SAE number.

This one is a NASA paper.

The problem with coatings is they tend to come off.

Now if we had a solid silicon nitride rotor that would really be
something :-)

Paul Lamar



I just had to go look this up, because it is a word used in weather and lapse rates. So I was trying to figure out how this works in a Diesel engine and then a Wankel.

"Adiabatic Process. An adiabatic process is one in which no heat is gained or lost by the system. The first law of thermodynamics with Q=0 shows that all the change in internal energy is in the form of work done."

I'm not an engineer. I can't think of one engine that does not have cooling requirements because of excess heat which reduces efficiency. And that includes any internal combustion engine I've used, worked on/with, etc.

We won't even discuss electric motors other than to mention hysteresis.

I think your BS detector is appropriately adjusted.

Steve Thompson


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