Ever since Doosan Infracore started making diesel engines during 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 started mass producing diesel engines at its first large-scale plant. Within a decade the company's production technology had advanced to the point that production of its very own diesel engine model was possible. Doosan's leadership position within the industry was secured. During the year 1995 Doosan made its first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. 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 low-emission, heavy-duty diesel engine model in the year 2007.
Doosan Infracore has facilities worldwide to make 60 different kinds of engines, as well as materials and parts. Products consist of natural gas engines and diesel engines for forklifts, trucks, buses, construction machinery, generators, ships and more. Engines range from 70 to 1,500 horse power. Yearly output is presently 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 plant within the US during 2008, and a joint venture plant within Xuzhou, China. The factory in China will have the capacity to make 50,000 diesel engines on an annual basis, with production scheduled to start in the year 2011.