Heavy Duty Equipment Technician Red Seal Exam Prep · Question
In a diesel engine, what is the purpose of the Diesel Particulate Filter (DPF)?
The DPF is designed to capture soot (particulate matter) from the exhaust stream. When the filter becomes full, a process called regeneration occurs, burning of
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Question: In a diesel engine, what is the purpose of the Diesel Particulate Filter (DPF)?
Answer options: ✅ To trap and burn off soot particles from the exhaust gas
- To reduce nitrogen oxide (NOx) emissions
- To cool the exhaust gas before it enters the muffler
- To filter impurities from the fuel
Correct answer: To trap and burn off soot particles from the exhaust gas
Explanation: The DPF is designed to capture soot (particulate matter) from the exhaust stream. When the filter becomes full, a process called regeneration occurs, burning off the accumulated soot to clean the filter.
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