Since Doosan Infracore started producing diesel engines during the year 1958, the business has continued to manufacture its R&D capacities to stay at the forefront of the industry in Korea. In the year 1975, Doosan started mass producing diesel engines at its first large-scale plant. Within ten years the production technology of the business had advanced to the point that making its very own diesel engine model was possible. Doosan's leadership position within the business was secured. In the year 1995 Doosan produced its first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Since 2000, the company has developed technology for low-pressure natural gas engines, sophisticated common-rail engines, and Tier 3-compliant 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 produce 60 different engine models, as well as parts and materials. Products include natural gas engines and diesel engines for forklifts, trucks, buses, construction machinery, ships, generators and more. Engines vary from 70 to 1,500 horse power. Yearly output is currently 75,000 units.
Doosan still puts great emphasis on its R&D capabilities which focus on expanding into more markets and increasing output. Demand for stricter regulations governing engine emissions has led the company to build a compressed natural gas engine plant within the United States during 2008, and a joint project plant in Xuzhou, China. The factory within China will have the capacity to produce 50,000 diesel engines on an annual basis, with production scheduled to begin in the year 2011.