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 in 1975, manufacturing diesel engines on a mass scale at its very first large scale facility. Within a decade the company's production technology had progressed to the point that producing its own diesel engine model was possible. Doosan's leadership position within the industry was secured. During the year 1995 the company produced its first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Since the year 2000, the company has developed technology for sophisticated common-rail engines, Tier 3-compliant engines and low-pressure natural gas 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 produce 60 different engine models, as well as materials and parts. Products include diesel engines and natural gas engines for forklifts, trucks, construction machinery, 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 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 plant in China could manufacture 50,000 diesel engines on a yearly basis, with production scheduled to start in 2011.