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


Silicon oxynitrate die-cast will work as a rotor face if held in a 2
piece hub.
 Some newer options are alloyed with metals to subdue the brittleness.
Not cost effective yet. Also can be bought as plate stock, works as
inserts in the side housings held in carbon fiber.

Under heat the carbon shrinks almost none and the si is very stable.
I expect it will hold together nicely. We shall see...

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3D printed ceramic latice.May not be keeping heat in but it sure
tells it where its not to go. Serious air cooling. The printers
are now under well $1000. And desk top size.

michael Nash

How long would it take to 3D print a Mazda rotor out of this stuff?

What would be the tribology situation  between this stuff
and the silicon nitride seals apex seals ?

What are the mechanical properties at 700 F ?

Paul Lamar

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