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 during 1975, producing diesel engines on a mass scale at its first large scale facility. Within a decade the company's production technology had progressed to the point that production of its very own diesel engine model was possible. Doosan's leadership position in the industry was secured. During 1995 the company produced its very first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. 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 during the year 2007.
Doosan Infracore has facilities worldwide to produce 60 different kinds of engines, as well as materials and parts. Products comprise natural gas engines and diesel engines for trucks, forklifts, construction equipment, buses, generators, ships and more. Engines range from 70 to 1,500 hp. Yearly output is currently 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 make a compressed natural gas engine factory in the United States during 2008, and a joint project factory in Xuzhou, China. The factory within China could manufacture 50,000 diesel engines on a yearly basis, with production scheduled to begin in the year 2011.