Technician A says that post-2010 NG fueled commercial engines must be equipped with a DPF in the exhaust gas aftertreatment circuit. Technician B says that post-2010 NG fueled commercial engines are normally equipped with passive reduction and oxidation catalysts in the exhaust system. Who is correct??

Question

Quizplus · Accepted Answer

Technician B is correct because post-2010 natural gas (NG) fueled commercial engines typically use passive reduction and oxidation catalysts in the exhaust system for emissions control, rather than diesel particulate filters (DPF), which are more common in diesel engines to trap particulate matter.

Technician a Says That Post-2010 NG Fueled Commercial Engines Must