Cummins
American engines and related technology company
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| 2024 | Planned launch of X15N natural gas engine with 14.9L displacement. |
| 2023 | Cummins unveiled two new engines: the X10 (designed to replace the X12 and L9 in both heavy and medium duty truck markets) and the X15N (a CNG version of the X15 expected to release in 2025). |
| December 2023 | Cummins was fined $1.675 billion by the U.S. Justice Department for Clean Air Act violations, specifically for installing devices that bypassed emissions controls on 960,000 Dodge and Stellantis RAM pickup truck diesel engines between 2013 and 2023. The company was also required to pay $325 million in remedies and recalls. |
| 2022 | Cummins purchased Jacobs Vehicle Systems, reintegrating the previously separated engine brake technology division back into the company. |
| 2020 | Production of ISX12 and ISX15 diesel engines concludes. |
| 2019 | Engine updated to produce 400 hp and 1000 ft-lb torque, marking a significant performance enhancement. |
| 2018 | Phasing out of ISX12 diesel engine starts. Introduction of ISX12N, which is built off the X12 block, replaces ISX12 G. |
| 2017 | Phasing out of ISX12 G natural gas variant begins. |
| 2016 | Phasing out of ISX15 diesel engine begins. |
| 2014 | Introduction of Euro 6 emissions standards for 6.7L ISB engine |
| 2013 | Launch of ISX12 G natural gas variant with 11.9L displacement. |
| 2011 | Late model Ram trucks receive an updated engine version with increased performance and an improved exhaust brake rating. |
| 2010 | Cummins transitioned the X-series engine design, moving from a dual overhead cam system to a common rail fuel system, eliminating the injector camshaft and enabling fuel pressurization up to 35,000 psi. |
| 2010 | Introduction of ISX12 diesel engine with 11.9L displacement and 130 mm × 150 mm bore x stroke. |
This contents of the box above is based on material from the Wikipedia articles Cummins X-series engine, Cummins B Series engine, Cummins & Cummins F Series engine, which are released under the Creative Commons Attribution-ShareAlike 4.0 International License.