In the year 1958, Doosan Infracore began to make 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 the year 1975, manufacturing diesel engines on a mass scale at its first large scale facility. In a decade 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 industry was secured. In 1995 the company produced its first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. Ever since the year 2000, the company has developed technology for low-pressure natural gas engines, sophisticated common-rail engines, and Tier 3-compliant engines. In order to comply with strict Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model during the year 2007.
Doosan Infracore has facilities worldwide to make 60 different kinds of engines, as well as parts and materials. Products comprise diesel engines and natural gas engines for trucks, forklifts, construction machines, buses, generators, ships and more. Engines vary from 70 to 1,500 horse power. Annual output is presently 75,000 units.
The company is continually engaged in expanding R&D capabilities to increase output and expand to more markets. Demand for more stringent regulations governing engine emissions has led the company to make a compressed natural gas engine factory within the United States during the year 2008, and a joint venture factory in Xuzhou, China. The plant in China can produce 50,000 diesel engines every year, with production scheduled to start in the year 2011.