In 1958, Doosan Infracore started 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 in 1975, manufacturing 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 own diesel engine model was possible. Doosan's leadership position in the industry was secured. In 1995 the company made its first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. 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 comply with stringent Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model during the year 2007.
Doosan Infracore has facilities worldwide to produce 60 different kinds of engines, as well as materials and parts. Products consist of natural gas engines and diesel engines for forklifts, trucks, construction machinery, buses, ships, generators 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 stricter policies governing engine emissions has led the company to make a compressed natural gas engine factory in the US during the year 2008, and a joint venture factory within Xuzhou, China. The factory within China can make 50,000 diesel engines each year, with production scheduled to start in 2011.