During the year 1958, Doosan Infracore began to make diesel engines and has continued R&D to help stay ahead of the curve in Korea's heavy and material handling industry. Doosan began during the year 1975, producing diesel engines on a mass scale at its very first large scale facility. Within 10 years the production technology of the business had advanced to the point that making its very own diesel engine model was possible. Doosan's leadership position in the business was secured. During 1995 Doosan made its first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Ever since 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 in 2007.
Doosan Infracore has facilities worldwide to make 60 different engine models, as well as parts and materials. Products consist of diesel engines and natural gas engines for trucks, forklifts, buses, construction machinery, ships, generators and many more. Engines range from 70 to 1,500 horse power. Annual 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 plant within the US during the year 2008, and a joint project plant within Xuzhou, China. The factory in China would have the capacity to produce 50,000 diesel engines each year, with production scheduled to start in the year 2011.