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 in the year 1975, producing diesel engines on a mass scale at its very first large scale facility. In ten years the company's production technology had progressed to the point that producing its very own diesel engine model was possible. Doosan's leadership position within the business was secured. During the year 1995 the company made its very first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. Ever since 2000, the company has developed technology for low-pressure natural gas engines, sophisticated common-rail engines, and Tier 3-compliant engines. In order to follow stringent Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model in the year 2007.
Doosan Infracore has facilities worldwide to manufacture 60 different engine models, as well as parts and materials. Products consist of natural gas engines and diesel engines for trucks, forklifts, buses, construction equipment, ships, generators and many more. Engines range from 70 to 1,500 horse power. Yearly output is now 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 policies governing engine emissions has led the company to make a compressed natural gas engine plant within the US during 2008, and a joint project plant within Xuzhou, China. The factory within China can produce 50,000 diesel engines every year, with production scheduled to begin in the year 2011.