Fiat Research on Scavenging of 2-Stroke Large Bore Engines

This paper was prepared after a brief survey of the scavenging systems development, from the birth of the diesel 2-stroke cycle and after a similar report of the research methods. The results are described of the research carried out by Fiat on the scavenging of the 2-stroke large-bore engines.

A report is also given of the results obtained through lab tests at the Fiat Gas Dynamics Labs, and on the full-size engines, which makes it possible to follow the evolution of the Fiat scavenging, mainly during the last 30 years.

These test results were then compared with the ones obtained, the method of research being the same, with other well-known 2-stroke diesel engines scavenging systems.