During 1958, Doosan Infracore started to produce diesel engines and has continued R&D to help stay ahead of the curve in Korea's heavy and material handling industry. Doosan started in 1975, manufacturing diesel engines on a mass scale at its first large scale facility. In a decade 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 industry was secured. During the year 1995 Doosan produced its first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. Ever since 2000, the company has developed technology for sophisticated common-rail engines, Tier 3-compliant engines and low-pressure natural gas engines. In order to follow strict Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model during 2007.
Doosan Infracore has facilities worldwide to produce 60 different kinds of engines, as well as parts and materials. Products consist of diesel engines and natural gas engines for trucks, forklifts, construction machines, buses, generators, ships and more. Engines range from 70 to 1,500 hp. Yearly 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 policies governing engine emissions has led the company to make a compressed natural gas engine factory within the US during the year 2008, and a joint project factory within Xuzhou, China. The factory in China can make 50,000 diesel engines on a yearly basis, with production scheduled to begin in the year 2011.