Since Doosan Infracore started making diesel engines during 1958, the business has continued to build its R&D capacities to stay at the forefront of the industry within Korea. During the year 1975, Doosan started mass producing diesel engines at its very first large-scale plant. Within a decade the production technology of the business had advanced to the point that production of its own diesel engine model was possible. Doosan's leadership position within the industry was secured. In the year 1995 the company made 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. In order to comply with strict Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model in 2007.
Doosan has numerous facilities throughout the world that help produce 60 different types of engines, as well as parts and materials. Products consist of natural gas engines and diesel engines for trucks, forklifts, buses, construction equipment, generators, ships and many more. Engines range from 70 to 1,500 hp. Yearly 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 regulations governing engine emissions has led the company to build a compressed natural gas engine factory in the United States in 2008, and a joint venture plant within Xuzhou, China. The factory within China could produce 50,000 diesel engines each year, with production scheduled to start in the year 2011.