DIESEL PARTICULATE FILTER HANDLING. Manual - part 3

ENGINE

DIESEL PARTICULATE FILTER HANDLING MANUAL, WSM

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1.  FUNCTION OF DIESEL PARTICULATE FILTER 

(DPF)

The Diesel Particulate Filter (hereinafter referred to as the

"DPF") is a filter to capture fine particles (soot and ash) contained in
the exhaust gas of a diesel engine. 

The ash content is mainly metallic additives contained in burnt

lubricating oil. 

The filter has a honeycomb structure with adjacent cell holes

alternately closed.

In addition, by alternately closing the inlet side and the outlet

side of the exhaust gas, the thin ceramics wall is used as a filter.

As shown in the figure, fine particles in the exhaust gas are

captured when they pass through this thin wall, and the exhaust gas
is discharged as clean gas. 

ENGINE

DIESEL PARTICULATE FILTER HANDLING MANUAL, WSM

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2.  DPF REGENERATION AND DPF CLEANING

As mentioned above, the filter is a device to capture fine particles. 
The filter is clogged with the increase of the engine operating time. 
When this occurs, the filter is "regenerated" by burning and removing soot.
However, since ash cannot be removed by the regeneration of the filter, there is a need for "cleaning" of the filter

by removing ash at regular intervals by a cleaning contractor using specialized equipment.

1. DPF Regeneration

The engine has the DPF regeneration mode described below (function to burn and remove deposited soot).

2. Cleaning of ash based on maintenance intervals

Since ash deposited in the filter cannot be removed by regeneration, periodical cleaning is required. 
There is a need to clean the filter at the pre-determined maintenance intervals (3,000 hours) by a cleaning
contractor using the specialized equipment by removing the DPF filter complete from the DPF muffler full assy.

3. Cleaning of heavy soot and ash accumulation on filter

a) In the case of cleaning request due to heavy soot accumulation
b) In the case of cleaning request due to increase the frequency of regeneration
In this case, there is a need to clean the filter by a cleaning contractor using the specialized equipment by
removing the DPF filter complete from the DPF muffler full assy.

(a)

Automatic regeneration

Regeneration by automatic control is performed using post injection. 
The operation of the product can be continued.

(b)

Parked regeneration

If regeneration cannot be carried out depending on the situation of the work, the operation of 
the installed product is stopped to carry out regeneration. 

(c)

Manual regeneration with a diagnosis 
tool (Diagmaster)

Such regeneration is performed as urgent measures in the event of abnormal soot deposition.

ENGINE

DIESEL PARTICULATE FILTER HANDLING MANUAL, WSM

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3.  DPF MAINTENANCE FLOW

When the following condition happened, DPF need to have cleaning or exchange.There are two types of

maintenance flow as "Clean & Return" and "Exchange". Please execute the correct maintenance according to
distributor's instructions.
(1) Every 3,000 hours of operation (Scheduled maintenance)
(2) Cleaning request due to heavy soot accumulation (P-Code:P3008, J1939:3701-0)
(3) Cleaning request due to increase the frequency of regeneration (P-Code:P3024, J1939:523602-0)

ENGINE

DIESEL PARTICULATE FILTER HANDLING MANUAL, WSM

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[1]  CLEANING & RETURN FLOW