In addition to the development of existing engines, the Świątek company is carrying out new projects. The most important of them are: a power bench for altitude simulation (temperature & air), as well as the “INNO-LOT” project. “INNO-LOT” is a hashtag composed of INNO- (innovation) and -LOT (from the word “lotnictwo” – aviation in Polish). The aim of this project is to create an engine that burns kerosene, but with a spark-ignition system. It means, the thermodynamic cycle would be Beau de Rochas, and not the Diesel cycle. As the result, it should keep the engine’s weight reasonable.
An experimental monocylinder turns already now on the bench with a modular cylinder head, in order to test different forms of the combustion chamber. But the elements of the future engine are gradually taking shape; we were able to show at the RSA meeting in Brienne-le-Château a four-cylinder model:
The prototype uses a VW block, aluminum cylinders with steel sleeves, instead of cast iron, and separate liquid-cooled cylinder heads. The bore is of 94 mm, and the stroke of 82 mm. Forthermore, the injection will be direct, and the compression will be 50% higher compared to existing air-cooled models.
From the point of view of thermodynamics, this engine will – of course – be less efficient than a diesel engine. But we believe, that it will be much less heavy.
Eventually, in its atmospheric version, it will reach 115 hp, and in turbo version, we expect 140 hp. An other version of with 109 hp is planned, which will fullfill the new French UL regulation.