In 1958, Doosan Infracore began to make 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, manufacturing diesel engines on a mass scale at its very first large scale facility. In ten years 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. During the year 1995 the company made its first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. 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 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 manufacture 60 different kinds of engines, as well as materials and parts. Products comprise natural gas engines and diesel engines for forklifts, trucks, construction equipment, buses, ships, generators and more. Engines range from 70 to 1,500 horse power. Yearly output is currently 75,000 units.
The company is continually engaged in expanding R&D capabilities to increase output and expand to more markets. Demand for stricter regulations governing engine emissions has led the company to build a compressed natural gas engine factory within the United States in 2008, and a joint project plant in Xuzhou, China. The plant within China will have the capacity to make 50,000 diesel engines on a yearly basis, with production scheduled to start in the year 2011.