Cert III Heavy Commercial Vehicle Practice Questions - Certificate III In Heavy Commercial Vehicle Mechanical Technology (AUR31120) Exam

During active DPF (Diesel Particulate Filter) regeneration, what happens inside the filter?

The filter is physically removed and cleaned with compressed air Accumulated soot is burned off at elevated exhaust temperatures, typically above 550 °C A chemical cleaning agent is injected into the filter housing The filter reverses airflow direction to blow soot out through the exhaust pipe

Correct Answer:

Accumulated soot is burned off at elevated exhaust temperatures, typically above 550 °C

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