In the year 1958, Doosan Infracore began 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 very first large scale facility. Within 10 years the production technology of the company had advanced to the point that making its own diesel engine model was possible. Doosan's leadership position within the industry was secured. In 1995 Doosan made its first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. Ever since the year 2000, the company has developed technology for low-pressure natural gas engines, sophisticated common-rail engines, and Tier 3-compliant engines. In order to follow 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 make 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 many more. Engines range from 70 to 1,500 horse power. Yearly output is currently 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 build a compressed natural gas engine factory within the US during the year 2008, and a joint venture plant within Xuzhou, China. The factory in China can produce 50,000 diesel engines per year, with production scheduled to begin in 2011.