QSB 6.7-liter I6 QSL 9-liter I6 QSG 12-liter I6 QSX 15-liter I6 QSK 19-liter I6 QSK 23-liter I6 QST 30-liter V12 QSK 38-liter V12 QSK 45-liter V12 QSK 50-liter V16 QSK 60-liter V16 QSK 78-liter V18 QSK 95-liter V16 X Series (Next-Generation) - evolution of IS engine family X12 X15 Performance 15-liter I6 X15 Efficiency 15-liter I6 Concept vehicles Cummins Aeos - An electric-powered conventional truck. Clean Air Act violation In 1998, the EPA announced fines totaling $83.4 million against Cummins and six other diesel engine manufacturers, the largest fine to date. The fines came after manufacturers evaded testing by deliberately deactivating emissions controls during highway driving, to give the appearance of being in full regulatory compliance during standard laboratory testing. The manufacturers also agreed to spend more than $1 billion to correct the problem. The trucks used engine ECU software to engage pollution controls during the 20-minute lab tests to verify compliance with the Clean Air Act, but then quietly disabled the emissions controls during normal highway cruising, thereby emitting up to three times the maximum allowed NOx pollution. Carbon footprint Cummins reported Total CO2e emissions (Direct + Indirect) for the twelve months ending 31 December 2020 at 595 Kt (-94 /-13.7% y-o-y). The company plans to reduce total emissions (Direct + Indirect) 50% by 2030 from a 2018 base year and also aims to reach net-zero by 2050. See also Cummins Corporate Office Building Cummins UK Cummins-Wärtsilä Komatsu J. Irwin Miller Brammo References External links Cummins Corporate Web Site Cummins Spare Parts Catalogue Auto parts suppliers of the United States Gas engine manufacturers Diesel engine manufacturers Locomotive engine manufacturers Marine engine manufacturers Motor vehicle engine manufacturers Manufacturing companies based in Indiana Vehicle manufacturing companies established in 1919 1919 establishments in Indiana Companies listed on the New York Stock Exchange Trucking industry in the United States Columbus, Indiana American brands Fuel cell manufacturers Electrical generation engine manufacturers Turbocharger manufacturers