Since Doosan Infracore began producing diesel engines during 1958, the company has continued to build its R&D capacities to stay at the forefront of the industry in Korea. In 1975, Doosan started mass producing diesel engines at its very first large-scale plant. In a decade the production technology of the business had advanced to the point that production of its own diesel engine model was possible. Doosan's leadership position within the industry was secured. During the year 1995 Doosan produced its very first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. Since the year 2000, the company has developed technology for sophisticated common-rail engines, Tier 3-compliant engines and low-pressure natural gas engines. In order to comply with stringent Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model during the year 2007.
Doosan Infracore has facilities worldwide to manufacture 60 different engine models, as well as parts and materials. Products consist of diesel engines and natural gas engines for forklifts, trucks, construction equipment, buses, generators, ships and many more. Engines vary from 70 to 1,500 hp. Yearly 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 stricter policies governing engine emissions has led the company to build a compressed natural gas engine plant in the US during 2008, and a joint project factory within Xuzhou, China. The factory within China could make 50,000 diesel engines on an annual basis, with production scheduled to begin in the year 2011.