Ever 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 the year 1975, Doosan began mass producing diesel engines at its first large-scale plant. Within 10 years the production technology of the business had progressed to the point that making its very own diesel engine model was possible. Doosan's leadership position within the industry was secured. In 1995 Doosan produced its very first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Since 2000, the company has developed technology for Tier 3-compliant engines, low-pressure natural gas engines and sophisticated common-rail engines. In order to comply with strict Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model during 2007.
Doosan Infracore has facilities worldwide to produce 60 different engine models, as well as materials and parts. Products include diesel engines and natural gas engines for forklifts, trucks, construction machinery, buses, generators, ships and more. Engines range from 70 to 1,500 horse power. Annual output is now 75,000 units.
The company is continually engaged in expanding R&D capabilities to increase output and expand to more markets. Demand for stricter regulations governing engine emissions has led the company to make a compressed natural gas engine plant within the United States in 2008, and a joint venture plant in Xuzhou, China. The plant within China can make 50,000 diesel engines every year, with production scheduled to begin in the year 2011.