Since Doosan Infracore began making diesel engines in the year 1958, the business has continued to manufacture its R&D capacities to stay at the forefront of the business in Korea. In the year 1975, Doosan began mass producing diesel engines at its very first large-scale plant. Within a decade the production technology of the company had progressed to the point that production of its own diesel engine model was possible. Doosan's leadership position in the industry was secured. During the year 1995 the company produced its very first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Since 2000, the company has developed technology for sophisticated common-rail engines, Tier 3-compliant engines and low-pressure natural gas engines. In order to comply with strict Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model during the year 2007.
Doosan Infracore has facilities worldwide to produce 60 different engine models, as well as parts and materials. Products include natural gas engines and diesel engines for trucks, forklifts, buses, construction equipment, generators, ships and many more. Engines range from 70 to 1,500 horse power. Annual output is presently 75,000 units.
The company is continually engaged in expanding R&D capabilities to expand to more markets and increase output. Demand for more stringent policies governing engine emissions has led the company to build a compressed natural gas engine factory in the US in 2008, and a joint project plant within Xuzhou, China. The plant in China could make 50,000 diesel engines on an annual basis, with production scheduled to begin in 2011.