The purpose of this thesis is the preliminary study (based on previous work) and idealization of a Regenerative Internal Combustion Engine (RICE) type engine. This type of engine has a typical Stirling engine working cycle as a starting point but with internal rather than external combustion. By means of the study of thermodynamic cycles PAL-1 and PAL-2 (by Engineer Mario Palazzetti), of classical internal combustion engines, numerous papers and the various components of the RICE engine, it was possible to carry out, in conjunction with a parallel thermodynamic study (carried out with the help of specific computational sotware), measurements concerning thermal variations, particularly of the main component of such an engine, namely the regenerator.