The engine range was extended in this decade to include 2, 3 and 4-cylinder variants. All the 3,268 engines sold before 1920 to boat owners, fire-fighting services, the army, homeowners and other customers had a standard engine speed of 800 rpm. The company changed its name to AB Pentaverken in 1919. Engine manufacturing dominated this period, but profitability was poor during the depression that followed World War I.