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 began in the year 1975, manufacturing diesel engines on a mass scale at its first large scale facility. Within 10 years the production technology of the company had progressed to the point that producing its own diesel engine model was possible. Doosan's leadership position in the business was secured. During the year 1995 Doosan produced its first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. 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 follow stringent Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model during 2007.
Doosan has numerous facilities around the globe which help produce 60 different engine models, as well as materials and parts. Products comprise natural gas engines and diesel engines for forklifts, trucks, construction machines, buses, generators, ships and more. Engines vary from 70 to 1,500 hp. Yearly output is currently 75,000 units.
The company is continually engaged in expanding R&D capabilities to increase output and expand to more markets. Demand for stricter regulations governing engine emissions has led the company to make a compressed natural gas engine factory within the United States during 2008, and a joint project plant in Xuzhou, China. The factory within China can make 50,000 diesel engines every year, with production scheduled to begin in 2011.