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 during 1975, producing diesel engines on a mass scale at its first large scale facility. In a decade the company's production technology had progressed to the point that producing its very own diesel engine model was possible. Doosan's leadership position in the business was secured. During 1995 the company made its first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Since the year 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 heavy-duty, low emission diesel engine model during 2007.
Doosan Infracore has facilities worldwide to make 60 different kinds of engines, as well as materials and parts. Products consist of diesel engines and natural gas engines for trucks, forklifts, buses, construction equipment, generators, ships and more. Engines vary 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 increase output and expand to more markets. Demand for stricter policies governing engine emissions has led the company to build a compressed natural gas engine factory in the United States during 2008, and a joint venture factory in Xuzhou, China. The factory in China could produce 50,000 diesel engines per year, with production scheduled to start in the year 2011.