Since Doosan Infracore began producing diesel engines during the year 1958, the corporation has continued to build its R&D capacities to stay at the forefront of the business within Korea. During 1975, Doosan started mass producing diesel engines at its very first large-scale plant. In 10 years the production technology of the business had advanced to the point that producing its own diesel engine model was possible. Doosan's leadership position in the business was secured. During 1995 the company produced its very first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. Since the year 2000, the company has developed technology for low-pressure natural gas engines, sophisticated common-rail engines, and Tier 3-compliant engines. In order to comply with strict Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model in the year 2007.
Doosan Infracore has facilities worldwide to make 60 different engine models, as well as parts and materials. Products include natural gas engines and diesel engines for forklifts, trucks, construction equipment, buses, ships, generators and more. Engines vary from 70 to 1,500 hp. Yearly output is currently 75,000 units.
The company is continually engaged in expanding R&D capabilities to expand to more markets and increase output. Demand for stricter policies governing engine emissions has led the company to make a compressed natural gas engine factory within the US in the year 2008, and a joint project plant in Xuzhou, China. The plant within China can produce 50,000 diesel engines on an annual basis, with production scheduled to begin in 2011.