Since Doosan Infracore started producing diesel engines in 1958, the business has continued to manufacture its R&D capacities to stay at the forefront of the industry in Korea. In the year 1975, Doosan began mass producing diesel engines at its very first large-scale plant. In a decade the company's production technology had advanced to the point that producing its own diesel engine model was possible. Doosan's leadership position within the business was secured. During the year 1995 the company produced 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 stringent Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model during the year 2007.
Doosan has numerous facilities throughout the world that help produce 60 different types of engines, as well as materials and parts. Products comprise natural gas engines and diesel engines for forklifts, trucks, buses, construction machines, ships, generators and more. Engines range from 70 to 1,500 horse power. Annual output is now 75,000 units.
The company is continually engaged in expanding R&D capabilities to increase output and expand to more markets. Demand for more stringent regulations governing engine emissions has led the company to make a compressed natural gas engine factory in the US in 2008, and a joint project plant in Xuzhou, China. The plant within China will have the capacity to manufacture 50,000 diesel engines on a yearly basis, with production scheduled to begin in the year 2011.