Since Doosan Infracore started making diesel engines during 1958, the company has continued to build its R&D capacities to stay at the forefront of the business within Korea. In the year 1975, Doosan started mass producing diesel engines at its very first large-scale plant. In a decade the production technology of the business had progressed to the point that producing its own diesel engine model was possible. Doosan's leadership position in the industry was secured. In the year 1995 the company produced its very first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. 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 stringent Euro emission control standards, the company developed a heavy-duty, low emission 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 comprise natural gas engines and diesel engines for trucks, forklifts, construction equipment, buses, ships, generators and more. Engines range from 70 to 1,500 hp. Annual output is now 75,000 units.
Doosan still puts great emphasis on its R&D capabilities which focus on expanding into more markets and increasing output. Demand for more stringent regulations governing engine emissions has led the company to make a compressed natural gas engine plant within the US during the year 2008, and a joint project plant within Xuzhou, China. The factory within China would have the capacity to manufacture 50,000 diesel engines on an annual basis, with production scheduled to begin in the year 2011.