During 1958, Doosan Infracore started 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 started during 1975, producing diesel engines on a mass scale at its first large scale facility. In ten years the production technology of the company had advanced to the point that production of its own diesel engine model was possible. Doosan's leadership position within the business was secured. In the year 1995 the company made its very 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. To be able follow stringent Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model in the year 2007.
Doosan Infracore has facilities worldwide to produce 60 different kinds of engines, as well as parts and materials. Products consist of natural gas engines and diesel engines for trucks, forklifts, buses, construction machines, ships, generators and many more. Engines range from 70 to 1,500 horse power. Yearly output is now 75,000 units.
The company is continually engaged in expanding R&D capabilities to expand to more markets and increase output. Demand for stricter regulations governing engine emissions has led the company to build a compressed natural gas engine plant within the United States during the year 2008, and a joint project plant in Xuzhou, China. The plant within China can produce 50,000 diesel engines per year, with production scheduled to begin in the year 2011.