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 within Korea. During the year 1975, Doosan began mass producing diesel engines at its first large-scale plant. In a decade the company's production technology had advanced to the point that producing its very own diesel engine model was possible. Doosan's leadership position within the industry was secured. During 1995 Doosan made its first low-emission diesel engine, followed by commercial vehicle CNG engines three years later. Since 2000, the company has developed technology for sophisticated common-rail engines, Tier 3-compliant engines and low-pressure natural gas engines. In order to comply with stringent Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model during the year 2007.
Doosan Infracore has facilities worldwide to make 60 different kinds of engines, as well as materials and parts. Products consist of natural gas engines and diesel engines for forklifts, trucks, construction equipment, buses, ships, generators and many more. Engines vary from 70 to 1,500 hp. Yearly 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 stricter regulations governing engine emissions has led the company to make a compressed natural gas engine factory within the United States in the year 2008, and a joint venture factory in Xuzhou, China. The plant within China will have the capacity to make 50,000 diesel engines each year, with production scheduled to start in the year 2011.