Ever since Doosan Infracore started making diesel engines during 1958, the corporation has continued to build its R&D capacities to stay at the forefront of the industry in Korea. In 1975, Doosan started mass producing diesel engines at its very first large-scale plant. In a decade the production technology of the business had advanced to the point that making its very own diesel engine model was possible. Doosan's leadership position within the business was secured. During the year 1995 the company made 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 Tier 3-compliant engines, low-pressure natural gas engines and sophisticated common-rail engines. To be able 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 make 60 different kinds of engines, as well as parts and materials. Products include diesel engines and natural gas engines for forklifts, trucks, buses, construction equipment, ships, generators and more. Engines range from 70 to 1,500 horse power. Yearly output is currently 75,000 units.
Doosan still puts great emphasis on its R&D capabilities that focus on expanding into more markets and increasing output. Demand for stricter policies governing engine emissions has led the company to make a compressed natural gas engine plant in the United States during the year 2008, and a joint project plant within Xuzhou, China. The plant within China can manufacture 50,000 diesel engines on an annual basis, with production scheduled to start in the year 2011.