Schroeter Diesel Technology Museum

American Bosch PJB-2BF-as0A-2775C for Fairbanks-Morse submarine engine. Circa 1950.

American Bosch PJB-2BF-120A-2775C for Fairbanks-Morse submarine engine. Circa 1950. This pump was part of the diesel fuel injection system, a critical component for precise fuel delivery under high-pressure conditions.

American Bosch was a leading supplier of fuel injection equipment for military and industrial diesel engines during the mid-20th century. It was designed to handle the high compression and fuel delivery demands of submarine engines, which required reliability under extreme conditions. These pumps were part of the wartime and post-war diesel technology boom, supporting naval propulsion systems. The Fairbanks-Morse engines and their Bosch injection systems were known for durability, simplicity, and ease of maintenance, which were essential for submarine operations.