Since Doosan Infracore began producing diesel engines during 1958, the company has continued to build its R&D capacities to stay at the forefront of the business in Korea. During 1975, Doosan began mass producing diesel engines at its very first large-scale plant. Within ten years the production technology of the business had progressed to the point that production of its very own diesel engine model was possible. Doosan's leadership position within the business was secured. During the year 1995 Doosan made its first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. 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. To be able comply with strict Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model during the year 2007.
Doosan has a lot of facilities around the globe that help manufacture 60 different types of engines, as well as materials and parts. Products comprise diesel engines and natural gas engines for forklifts, trucks, construction equipment, buses, ships, generators 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 stricter regulations governing engine emissions has led the company to make a compressed natural gas engine factory in the US during 2008, and a joint venture plant in Xuzhou, China. The factory within China will have the capacity to make 50,000 diesel engines on a yearly basis, with production scheduled to begin in 2011.