In the year 1958, Doosan Infracore started to produce diesel engines and has continued R&D to help stay ahead of the curve in Korea's heavy and material handling industry. Doosan began in the year 1975, producing diesel engines on a mass scale at its first large scale facility. Within a decade the company's production technology had advanced to the point that producing its own diesel engine model was possible. Doosan's leadership position within the business was secured. During the year 1995 Doosan produced its very 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. In order to follow strict Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model during 2007.
Doosan has lots of facilities around the world which help make 60 different types of engines, as well as parts and materials. Products comprise diesel engines and natural gas engines for trucks, forklifts, construction machinery, buses, ships, generators and many more. Engines range from 70 to 1,500 horse power. Yearly output is currently 75,000 units.
The company is continually engaged in expanding R&D capabilities to increase output and expand to more markets. Demand for stricter policies governing engine emissions has led the company to build a compressed natural gas engine plant within the US in 2008, and a joint venture plant in Xuzhou, China. The plant within China would have the capacity to make 50,000 diesel engines every year, with production scheduled to start in 2011.