In 1958, Doosan Infracore began to produce 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 very first large scale facility. In ten years the production technology of the business 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. During the year 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 Tier 3-compliant engines, low-pressure natural gas engines and sophisticated common-rail engines. To be able follow strict Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model in 2007.
Doosan Infracore has facilities worldwide to produce 60 different engine models, as well as materials and parts. Products comprise diesel engines and natural gas engines for forklifts, trucks, construction machinery, buses, ships, generators and many more. Engines range from 70 to 1,500 hp. 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 stricter policies governing engine emissions has led the company to build a compressed natural gas engine factory in the United States in 2008, and a joint project plant within Xuzhou, China. The factory in China can produce 50,000 diesel engines each year, with production scheduled to begin in the year 2011.