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 in Korea. During the year 1975, Doosan began mass producing diesel engines at its very first large-scale plant. Within 10 years the company's production technology had progressed to the point that production of 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 three years later. Ever since 2000, the company has developed technology for Tier 3-compliant engines, low-pressure natural gas engines and sophisticated common-rail 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 Infracore has facilities worldwide to produce 60 different kinds of engines, as well as materials and parts. Products consist of diesel engines and natural gas engines for trucks, forklifts, buses, construction machines, ships, generators and many more. Engines vary from 70 to 1,500 hp. Yearly output is now 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 make a compressed natural gas engine plant in the United States during the year 2008, and a joint venture factory in Xuzhou, China. The plant in China will have the capacity to manufacture 50,000 diesel engines on an annual basis, with production scheduled to begin in the year 2011.