In the year 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 during 1975, manufacturing diesel engines on a mass scale at its very first large scale facility. In 10 years the production technology of the business had progressed to the point that making its very own diesel engine model was possible. Doosan's leadership position in the industry 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 Tier 3-compliant engines, low-pressure natural gas engines and sophisticated common-rail engines. In order to follow strict Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model during 2007.
Doosan has many facilities throughout the world 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 range from 70 to 1,500 horse power. Yearly output is currently 75,000 units.
The company is continually engaged in expanding R&D capabilities to expand to more markets and increase output. Demand for stricter regulations governing engine emissions has led the company to build a compressed natural gas engine plant within the United States during 2008, and a joint project factory within Xuzhou, China. The factory within China will have the capacity to make 50,000 diesel engines on a yearly basis, with production scheduled to begin in the year 2011.