Since Doosan Infracore started producing diesel engines in the year 1958, the company has continued to build its R&D capacities to stay at the forefront of the business in Korea. During the year 1975, Doosan started mass producing diesel engines at its first large-scale plant. In ten years the company's production technology had advanced to the point that making its very own diesel engine model was possible. Doosan's leadership position within the business was secured. In 1995 Doosan made its very first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Since the year 2000, the company has developed technology for Tier 3-compliant engines, low-pressure natural gas engines and sophisticated common-rail engines. To be able comply with stringent Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model during 2007.
Doosan Infracore has facilities worldwide to manufacture 60 different kinds of engines, as well as parts and materials. Products comprise diesel engines and natural gas engines for trucks, forklifts, buses, construction machinery, generators, ships and many more. Engines vary from 70 to 1,500 hp. Yearly 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 make a compressed natural gas engine factory within the US in 2008, and a joint project factory in Xuzhou, China. The factory in China will have the capacity to make 50,000 diesel engines each year, with production scheduled to start in 2011.