Since Doosan Infracore began producing diesel engines during the year 1958, the business has continued to build its R&D capacities to stay at the forefront of the industry within Korea. During 1975, Doosan started mass producing diesel engines at its very first large-scale plant. Within 10 years the production technology of the business had progressed to the point that production of its own diesel engine model was possible. Doosan's leadership position within the industry was secured. During the year 1995 the company produced its very first low-emission diesel engine, followed by commercial vehicle CNG engines after three years. Since the year 2000, the company has developed technology for low-pressure natural gas engines, sophisticated common-rail engines, and Tier 3-compliant engines. In order to follow strict Euro emission control standards, the company developed a low-emission, heavy-duty diesel engine model in 2007.
Doosan has many facilities throughout the world which help manufacture 60 different types of engines, as well as materials and parts. Products consist of natural gas engines and diesel engines for forklifts, trucks, construction equipment, buses, generators, ships and more. Engines range from 70 to 1,500 horse power. Yearly 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 regulations governing engine emissions has led the company to build a compressed natural gas engine factory within the US in 2008, and a joint project plant within Xuzhou, China. The plant in China could manufacture 50,000 diesel engines each year, with production scheduled to start in the year 2011.