Ever since Doosan Infracore started producing diesel engines in the year 1958, the business has continued to manufacture its R&D capacities to stay at the forefront of the industry within Korea. In the year 1975, Doosan started mass producing diesel engines at its very first large-scale plant. In a decade the production technology of the business had progressed to the point that producing its very own diesel engine model was possible. Doosan's leadership position in the industry was secured. During 1995 the company made its first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. Ever since the year 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 low-emission, heavy-duty diesel engine model in the year 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 forklifts, trucks, construction machinery, buses, generators, ships and many 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 policies governing engine emissions has led the company to build a compressed natural gas engine factory in the United States during the year 2008, and a joint project factory in Xuzhou, China. The plant in China can produce 50,000 diesel engines on a yearly basis, with production scheduled to start in the year 2011.