Robuta

https://www.liebherr.com/en-gb/components/solutions/combustion-engines/exhaust-gas-aftertreatment-4204139
Liebherr manufactures its own exhaust gas aftertreatment systems. They reliably reduce exhaust gas emissions and are optimally combined with our diesel
exhaust gasefficientaftertreatmentliebherr
https://www.rolls-royce.com/media/press-releases/2025/10-09-2025-rolls-royce-launches-new-flexible-mtu-exhaust-gas-aftertreatment-system-for-ships.aspx
Rolls-Royce launches new flexible mtu exhaust gas aftertreatment system for ships
rolls royceexhaust gaslaunchesnewflexible
https://www.merriam-webster.com/dictionary/aftertreatment
The meaning of AFTERTREATMENT is a secondary treatment to which a material (as film or dyed goods) is subjected after the primary treatment is finished.
merriam websteraftertreatmentdefinitionmeaning
https://www.phinia.com/technologies/diesel-injection-systems
PHINIA’s world-leading range of diesel technology solutions designed to suit different emissions standards and engine architectures. 
diesel fuelinjectionaftertreatmentsystems
https://www.cat.com/en_GB/by-industry/industrial-power/engines/aftertreatment-questions.html
The latest emissions standards are driving the use of aftertreatment systems like Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR)....
fourthingsknowengineaftertreatment