Cummins Inc. designs, manufactures, distributes, and services diesel and natural gas engines, electric power generation systems, and engine-related component products worldwide. It operates in four segments: Engine, Power Generation, Components, and Distribution. The Engine segment offers a range of diesel and natural gas powered engines for the heavy-and medium-duty truck, bus, recreational vehicle, light-duty automotive, agricultural, construction, mining, marine, oil and gas, rail, and governmental equipment markets. It also provides new parts and service, as well as remanufactured parts and engines. The Power Generation segment offers power generation systems, components, and services, including diesel, natural gas, gasoline, and alternative-fuel electrical generator sets for use in recreational vehicles, commercial vehicles, and recreational marine applications. This segment also provides components that make up power generation systems, such as engines, controls, alternators, transfer switches, and switchgears. The Components segment offers filtration and exhaust systems for on-and off-highway heavy-duty and mid-range equipment, as well as supplies filtration products for industrial and passenger car applications. This segment also develops after treatment and exhaust systems to help customers meet emissions standards. The Distribution segment provides parts and services, as well as service solutions, including maintenance contracts, engineering services, and integrated products. Cummins company was founded in 1919 and is headquartered in Columbus, Indiana.