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 started during the year 1975, manufacturing diesel engines on a mass scale at its first large scale facility. Within ten years the production technology of the company had progressed to the point that producing its very own diesel engine model was possible. Doosan's leadership position within the industry was secured. In the year 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. In order to follow stringent Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model during 2007.
Doosan Infracore has facilities worldwide to produce 60 different engine models, as well as parts and materials. Products include natural gas engines and diesel engines for forklifts, trucks, buses, construction equipment, ships, generators and more. Engines vary from 70 to 1,500 horse power. Yearly output is presently 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 regulations governing engine emissions has led the company to build a compressed natural gas engine plant in the US in 2008, and a joint venture plant in Xuzhou, China. The factory within China could manufacture 50,000 diesel engines each year, with production scheduled to begin in the year 2011.