In 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 the year 1975, producing diesel engines on a mass scale at its very first large scale facility. In 10 years the company's production technology had advanced to the point that production of its very own diesel engine model was possible. Doosan's leadership position within the business was secured. During the year 1995 Doosan produced its very first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. Since 2000, the company has developed technology for low-pressure natural gas engines, sophisticated common-rail engines, and Tier 3-compliant engines. To be able follow stringent Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model during 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 trucks, forklifts, buses, construction machines, ships, generators and many more. Engines range from 70 to 1,500 hp. Annual output is now 75,000 units.
Doosan still puts great emphasis on its R&D capabilities that focus on expanding into more markets and increasing output. Demand for more stringent policies governing engine emissions has led the company to make a compressed natural gas engine plant within the United States during 2008, and a joint venture factory in Xuzhou, China. The plant in China would have the capacity to make 50,000 diesel engines per year, with production scheduled to start in 2011.