In the year 1958, Doosan Infracore began to produce diesel engines and has continued R&D to help stay ahead of the curve within Korea's heavy and material handling industry. Doosan began in 1975, manufacturing diesel engines on a mass scale at its very first large scale facility. In 10 years the production technology of the business had advanced to the point that producing its very own diesel engine model was possible. Doosan's leadership position in the business was secured. In the year 1995 Doosan made its 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. To be able comply with strict Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model in 2007.
Doosan has numerous facilities around the globe that help make 60 different types of engines, as well as materials and parts. Products consist of diesel engines and natural gas engines for trucks, forklifts, construction equipment, buses, generators, ships and many more. Engines range from 70 to 1,500 horse power. Yearly output is presently 75,000 units.
The company is continually engaged in expanding R&D capabilities to expand to more markets and increase output. Demand for more stringent regulations governing engine emissions has led the company to make a compressed natural gas engine plant in the US in 2008, and a joint project plant within Xuzhou, China. The plant in China will have the capacity to make 50,000 diesel engines on a yearly basis, with production scheduled to begin in 2011.