During the year 1958, Doosan Infracore began 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 began in the year 1975, producing diesel engines on a mass scale at its first large scale facility. Within 10 years the company's production technology had advanced to the point that production of its very own diesel engine model was possible. Doosan's leadership position in the industry was secured. During the year 1995 Doosan produced its first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Ever since the year 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 in the year 2007.
Doosan Infracore has facilities worldwide to produce 60 different engine models, as well as parts and materials. Products comprise natural gas engines and diesel engines for forklifts, trucks, construction machines, buses, generators, ships and many 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 more stringent policies governing engine emissions has led the company to make a compressed natural gas engine plant within the United States during the year 2008, and a joint project plant within Xuzhou, China. The plant in China could manufacture 50,000 diesel engines each year, with production scheduled to start in the year 2011.