In 1958, Doosan Infracore started to produce diesel engines and has continued R&D to help stay ahead of the curve within Korea's heavy and material handling industry. Doosan started during 1975, manufacturing diesel engines on a mass scale at its very first large scale facility. In 10 years the production technology of the company 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. In 1995 the company 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 sophisticated common-rail engines, Tier 3-compliant engines and low-pressure natural gas engines. To be able follow stringent Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model in 2007.
Doosan Infracore has facilities worldwide to manufacture 60 different engine models, as well as materials and parts. Products comprise natural gas engines and diesel engines for forklifts, trucks, construction machinery, buses, ships, generators and more. Engines range from 70 to 1,500 hp. 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 make a compressed natural gas engine factory in the US in 2008, and a joint venture factory in Xuzhou, China. The factory within China can manufacture 50,000 diesel engines per year, with production scheduled to begin in the year 2011.