The <PERSON> engine was a large stationary single-cylinder internal combustion four-stroke engine designed by the <PERSON> <PERSON>. It was a low-RPM machine, and only fired every other stroke due to the <PERSON> cycle, also designed by <PERSON>. Motor A Diesel, <PERSON>, Motor A Gasolina, Steam Art, <PERSON>, Four Stroke Engine, Transport Museum, O Gas, Photos