SsangYong Actyon Sports II. Manual - part 63

15-49

0000-00

Diff. pres. sensor: Measure 

pressure between front 

side and rear side of CDPF

ECU (DCM 3.7)

Injector: Control post 

injection

D. Operation process

When the differential pressure sensor detects the pressure difference between the front and the rear 

side of CDPF, the sensor sends signal indicating the soot is accumulated and the post injection is 

performed to raise the temperature of exhaust gas. The amount of fuel injected is determined according 

to the temperature of exhaust gas detected by the rear temperature sensor. If the temperature is below 
600°C, the amount of fuel injected is increased to raise the temperature. If the temperature is over 
600°C, the amount of fuel injected is decreased or not controlled. When the engine is running in 

low load range, the amount of post injection and the amount of intake air are controlled. It is to raise the 

temperature by increasing the amount of fuel while decreasing the amount of intake air.

Front EGT sensor: 

Measure DOC temp.

Rear EGT sensor: Measure 

DPF temp.

Electronic throttle 

body: Control intake 

air mass

T-MAP sensor

Intake air 

mass 

Exceed  PM 

limit

Booster 

pressure/

temperature

Post injection

Control intake 

air mass

15-50

E. Cautions

Use only specified Engine Oil (approved by MB Sheet 229.51) for CDPF.

-

Use only specified engine oil (Low Ash Oil)

▶

The vehicle equipped with CDPF should use specific engine oil to improve the engine performance 

and fuel economy, and ensure the service life of CDPF.

-

Issue with normal engine oil

▶

Sulfur, one of the contents of engine oil is burned and generates soot that is not regenerated by the 

DPF. This remains on the filter as ashes and keeps accumulating. Eventually, this ashes will block 

the filter.

-

Benefit for specified engine oil

▶

Minimized the sulfur content of engine oil which reduces the service life.

Improved fuel economy and emission level of CO2 with high performance and low viscosity.

Increased service life of engine oil with high resistance to temperature.

-

-

-

Problems when using unspecified engine oil

▶

The service life of filter may be reduced by 30% or more by the ashes accumulated on the filter.

The fuel economy may be reduced because of engine rolling resistance, frequent regeneration of 

DPF.

-

-

These problems are also caused by oil with high sulfur content, such as tax exemption oil and 

heating oil, etc.

*

15-51

0000-00

3) Input/Output for CAN communication

01-3

1113-01

1. DESCRIPTION AND OPERATION

1) Cleanliness and Care

An automobile engine is a combination of many machined, honed, polished and lapped surfaces with 

tolerances that are measured in the ten-thousanths of an inch. 

When any internal engine parts are serviced, care and cleanliness are important. 

A liberal coating of enigne oil should be applied to friction areas during assembly, to protect and lubricate 

the surfaces on initial operation. Proper cleaning and protection of machined surfaces and friction areas 

is part of the repair procedure.

This is considered standard shop practice even if not specifically stated.

Whenever valve train components are removed for service, they should be kept in order. They should be 

installed in the same locations, and with the same mating surfaces, as when they were removed.

Battery cables should be disconnected before any major work is performed on the engine. Failure to 

disconnect cables may result in damage to wire harness or other electrical parts.