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3) PM Regeneration of DPF
The differential pressure sensor installed in the DPF measures the pressure values of inlet and
outlet of CDPF. And the amount of the PM collected in the filter is calculated based on the exhaust
temperature, intake air mass flow, booster pressure, etc.
The regeneration is started when the amount of the collected PM is 28 g or more.
The ECU commands post-injection to increase the temperature of CDPF to 600℃.
1.
When the amount of the collected PM is not enough: The DPF works as a filter.
2.
When enough amount of PM is collected: The ECU commands post-injection and increase the
exhaust gas temperature to start regeneration.
14-15
2412-02
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Troubleshooting
