SsangYong Korando III (2010 year). Manual — part 363

14-12

Collecting PM

→ Regeneration

The engine ECU detects the
amount of PM collected by the
information from the
temperature sensors and
differential pressure sensor.
When the soot is accumulated,
the engine ECU performs post-
injection to increase the
exhaust gas temperature and
burns the collected PM at
approx. 600°C.

Oxidation (DOC)

When the exhaust gas enters
into the CDPF assembly, its
CO, HC and PM are reduced
by the redox reaction of the
DOC. The remaining PM is
filtered and collected in CDPF,
and the temperature of the
exhaust gas is increased to
between 450 and 500°C.

5. OPERATING PROCESS

[Configuration and principle of operation]

The exhaust gas

passed through the

exhaust manifold

enters into the CDPF

assembly (at approx
250℃).

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1114-00

6. OPERATING TEMPERATURE

14-14

7. ELECTRIC CIRCUIT DIAGRAM

14-15

1114-00

8. CAUTIONS

1) Designated Engine Oil for CDPF (Low Ash Oil)

Need to use the designated engine oil for CDPF

1.

The smoke from the vehicle may generate the particle material in the ambient air. CDPF is the

device to reduce the smoke by collecting and recycling it. To ensure the performance of CDPF,

the designated engine oil should be used.

The smoke including combusted sulfur in fuel cannot be recycled in CDPF. This smoke

generates the ash, resulting in clogging the filter.

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Advantages when using the designated engine oil for CDPF

2.

Reduces the amount of ash

Improves the fuel economy and reduces the CO2

Increases the life span of engine oil

Available for all engines (diesel and gasoline)

-

-

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Problems when using non-designated engine oil for CDPF

3.

Decreases the life span of engine oil due to accumulated ash in DPF (around 30%)

Decreases the fuel economy due to friction resistance, exhaust gas resistance and frequent

recycling process of DPF

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The fule containing high sulfur may cause the same problems.

2) Do Not Use the Fuel Containing High Sulfur

Producing white smoke during recycling

1.

The sulfur in exhaust gas is changed to sulfate gas during exhaust process. This sulfate gas is

shown as white smoke.

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Producing odor during recycling

2.

The sulfur after oxidation may produce the odor.

-

Accumulation of ash

3.

The sulfur accumulated in DPF cannot be recycled. It reduces the life span of DPF.

-

3) White Smoke

The white smoke can be generated when the exhaust gas is recycled in DPF. There are two reasons as

below.

Saturated vapor

Sulfate

1.

2.