Ever since Doosan Infracore began making diesel engines in 1958, the business has continued to manufacture its R&D capacities to stay at the forefront of the industry within Korea. During the year 1975, Doosan started mass producing diesel engines at its very first large-scale plant. Within ten years the production technology of the company had progressed to the point that production of its own diesel engine model was possible. Doosan's leadership position in the industry was secured. During 1995 Doosan made its first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Ever since the year 2000, the company has developed technology for sophisticated common-rail engines, Tier 3-compliant engines and low-pressure natural gas engines. To be able comply with stringent Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model during 2007.
Doosan Infracore has facilities worldwide to manufacture 60 different engine models, as well as materials and parts. Products consist of natural gas engines and diesel engines for trucks, forklifts, buses, construction equipment, generators, ships and many more. Engines vary from 70 to 1,500 horse power. Annual output is currently 75,000 units.
Doosan still puts great emphasis on its R&D capabilities that focus on expanding into more markets and increasing output. Demand for stricter regulations governing engine emissions has led the company to make a compressed natural gas engine factory within the US in 2008, and a joint project factory in Xuzhou, China. The plant within China could manufacture 50,000 diesel engines on a yearly basis, with production scheduled to start in the year 2011.