In 1917 the factory "Construzioni Meccaniche Nazionale" made the D-110 engine, designed by the Mecaniche Colombo Office.

-The engine was called "CMN Colombo-Combi D-110", with 6 cylinders in line and 135 hp.

-It was also built by Alfa-Romeo and Oficine Meccaniche De Vecchi.

"CMN, D-110"

-This engine is located in the Leonardo Da Vinci Museum in Italy.

-As curiosity it has an overhaul plate from Secondo Mona di Somma Lombardoi, done in the year 1927.

-This type of engine was installed on the Farman HF.22.