The PS was succeeded in 1967 by a second generation engine, the DS series, whose development goals focused on high output, low spedific fuel consumption and compactness for genset and main engine roles. Some 10.000 examples of the PS-26 model, for example, were sold worldwide. Daihatsu evolved its current programme from the PS series which was devepoled in 1950 and helped establish the new company as a major supplier of auxiliary diesel engines. A Japanese contender in the domestic and international small bore medium speed engine arenas.