Ever since Doosan Infracore started producing diesel engines during 1958, the business has continued to build its R&D capacities to stay at the forefront of the business within Korea. In the year 1975, Doosan began mass producing diesel engines at its very first large-scale plant. Within 10 years the production technology of the company 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 1995 Doosan 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 low-pressure natural gas engines, sophisticated common-rail engines, and Tier 3-compliant engines. To be able comply with stringent Euro emission control standards, the company developed a heavy-duty, low emission diesel engine model during 2007.
Doosan has numerous facilities throughout the world which help produce 60 different engine models, as well as parts and materials. Products include natural gas engines and diesel engines for forklifts, trucks, buses, construction equipment, ships, generators and more. Engines range from 70 to 1,500 hp. Annual 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 more stringent policies governing engine emissions has led the company to make a compressed natural gas engine plant in the US during the year 2008, and a joint venture plant in Xuzhou, China. The factory within China can make 50,000 diesel engines each year, with production scheduled to start in 2011.