I had this idea a while back only I wanted to use some of the hot end gases to ignite
the fresh charge. Might mitigate the disadvantages of the flat combustion chamber.
The rotary is ideal for this sort of thing as hot end gases are available while a new
charge is being compressed. this sort of converts the rotary to a continuous
combustion engine like a gas turbine.

Paul Lamar

 TITLE: The regenerative internal combustion engine. I - Theory

Document ID: 19880057519 A (88A44746) File Series: Open Literature

Report Number: AIAA PAPER 88-3063

Sales Agency & Price: Issuing Activity - Copyright

Authors: 
      Ruiz, Francisco (Illinois Institute of Technology)

Published: Jul 01, 1988

Corporate Source: 
      (Corporate Source(s) Not Available)

Pages: 9

Contract Number: None

NASA Subject Category: MECHANICAL ENGINEERING

Abstract: 
      A zero-order thermodynamic analysis is presented for an engine cycle in which
part of the thermal energy of the exhaust gases is extracted, stored, and
      released to the flammable mixture, at the end of the compression stroke. The
ideal efficiency rises by at least 50 percent of the value obtainable without
      regeneration. Regeneration benefits engines based on the Otto and atmospheric
(no compression) cycles, more than those based on the Diesel cycle. It is
      expected that the temperature after regeneration will be higher than the
autoignition temperature, so that no igniter will be required, except for starting.
      It is recommended to control the power by varying the density at the intake,
maintaining a constant equivalence ratio of the mixture.

Major Subject Terms: 
      EXHAUST GASES  INTERNAL COMBUSTION ENGINES  OTTO CYCLE  REGENERATION
(ENGINEERING)  THERMODYNAMIC EFFICIENCY

Minor Subject Terms: 
      DIESEL ENGINES  FUEL CONSUMPTION  THERMODYNAMIC CYCLES  WANKEL ENGINES

Language Note: English

Notes: 
      AIAA, ASME, SAE, and ASEE, Joint Propulsion Conference, 24th, Boston, MA, July
11-13, 1988. 9 p. 



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