In 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 began in the year 1975, producing diesel engines on a mass scale at its first large scale facility. Within a decade the company's production technology 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 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. In order to follow strict Euro emission control standards, the company developed a heavy-duty, low emission 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 include natural gas engines and diesel engines for forklifts, trucks, construction machinery, buses, generators, ships and more. Engines vary from 70 to 1,500 hp. Annual 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 policies governing engine emissions has led the company to make a compressed natural gas engine factory within the United States during 2008, and a joint venture factory within Xuzhou, China. The factory within China can produce 50,000 diesel engines each year, with production scheduled to start in 2011.