Ever since Doosan Infracore began producing diesel engines during the year 1958, the company has continued to build its R&D capacities to stay at the forefront of the business in Korea. In 1975, Doosan started mass producing diesel engines at its very first large-scale plant. Within a decade 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 within the industry was secured. During 1995 the company made its 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 during 2007.
Doosan has lots of facilities throughout the globe that help make 60 different engine models, as well as materials and parts. Products consist of diesel engines and natural gas engines for trucks, forklifts, construction machines, buses, generators, ships and many more. Engines vary from 70 to 1,500 horse power. Annual output is presently 75,000 units.
The company is continually engaged in expanding R&D capabilities to increase output and expand to more markets. Demand for stricter policies governing engine emissions has led the company to build a compressed natural gas engine factory in the United States during the year 2008, and a joint venture factory in Xuzhou, China. The factory within China can make 50,000 diesel engines on an annual basis, with production scheduled to begin in 2011.