Since Doosan Infracore started making diesel engines in 1958, the company has continued to manufacture its R&D capacities to stay at the forefront of the industry in Korea. During the year 1975, Doosan began mass producing diesel engines at its first large-scale plant. Within a decade the production technology of the business had advanced to the point that producing its very own diesel engine model was possible. Doosan's leadership position within the business was secured. During the year 1995 Doosan produced its very first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Ever since 2000, the company has developed technology for Tier 3-compliant engines, low-pressure natural gas engines and sophisticated common-rail engines. To be able comply with stringent Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model in the year 2007.
Doosan Infracore has facilities worldwide to manufacture 60 different kinds of engines, as well as parts and materials. Products include natural gas engines and diesel engines for trucks, forklifts, buses, construction machinery, generators, ships and many more. Engines range from 70 to 1,500 hp. Annual output is presently 75,000 units.
The company is continually engaged in expanding R&D capabilities to increase output and expand to more markets. Demand for more stringent policies governing engine emissions has led the company to make a compressed natural gas engine factory within the US in the year 2008, and a joint project factory within Xuzhou, China. The plant within China could produce 50,000 diesel engines on an annual basis, with production scheduled to begin in 2011.