During the year 1958, Doosan Infracore started to make diesel engines and has continued R&D to help stay ahead of the curve within Korea's heavy and material handling industry. Doosan started in the year 1975, producing diesel engines on a mass scale at its very first large scale facility. In a decade the company's production technology 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 the company made its very first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Ever since 2000, the company has developed technology for Tier 3-compliant engines, low-pressure natural gas engines and sophisticated common-rail engines. To be able comply with strict 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 make 60 different engine models, as well as materials and parts. Products consist of natural gas engines and diesel engines for trucks, forklifts, construction equipment, buses, generators, ships and many more. Engines range from 70 to 1,500 hp. Yearly output is now 75,000 units.
Doosan still puts great emphasis on its R&D capabilities that focus on increasing output and expanding into more markets. Demand for more stringent policies governing engine emissions has led the company to build a compressed natural gas engine factory in the United States during the year 2008, and a joint project plant in Xuzhou, China. The plant in China can produce 50,000 diesel engines per year, with production scheduled to start in the year 2011.