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Replacing the diesel particulate filter (FAP / DPF) with SK-05 emulator

Замена сажевого фильтра (FAP / DPF) на эмулятор SK-05

The emulator is designed to completely remove the diesel particulate filter on diesel engines with Common rail injection system. Diesel cars that meet the requirements of the Euro - 4 standard and are equipped with particulate filters appeared in 2001. The very same euro standard - 4 has been operating in Europe since 2005, the euro standard - 5 has been operating in Europe since 2009. This device allows you to play all the signals associated with a particulate filter.

Advantages of the FAP / DPF diesel particulate filter emulator:

  • - You significantly save on the replacement of the particulate filter (The cost of the filter starts from $ 1000);
  • - You get some power gain by reducing the resistance to exhaust gases;
  • - Reduced fuel consumption due to changes in the regeneration period;
  • - The particulate filter will never bother you again;
  • - The control unit when installing the emulator is not opened.

Signs of a Faulty Particulate Filter

Признаки неисправного сажевого фильтра
Признаки неисправного сажевого фильтра

The driver usually learns about the existence of a particulate filter (FAP / DPF) after the appearance of the corresponding indication on the dashboard. The failure of the diesel particulate filter usually entails a reduction in power and increased fuel consumption, smoke, unstable operation of a diesel engine. When reading fault codes, error code P2002 “Low FAP / DPF efficiency” usually appears.

The principle of the particulate filter (FAP / DPF)

Reducing the amount of harmful emissions is achieved both due to the design features of the engine with the common rail system, and with the help of a diesel particulate filter. On most modern diesel cars, a diesel particulate filter is structurally combined with an oxidative catalyst. The oxidation catalyst is located in front of the filter. Thus, both the FAP / DPF filter and the catalyst function.

A particulate filter traps soot particles that are contained in exhaust gases. The function of the catalyst is the additional oxidation of hydrocarbons (afterburning of unburned fuel), as in a gasoline engine.

For the correct operation of the diesel particulate filter, the vehicle’s control system employs a multitude of sensors and those functions that are missing in the gasoline engine.

Принцип действия сажевого фильтра (FAP / DPF)
  1. Dashboard
  2. Electronic control unit
  3. Air Flow Sensor (MAF)
  4. Diesel engine
  5. Turbine temperature sensor
  6. Turbine
  7. Temperature sensor in front of the particulate filter
  8. Oxygen sensor (lambda)
  9. Particulate filter (FAP / DPF)
  10. The differential pressure sensor on the particulate filter
  11. Temperature sensor after the diesel particulate filter
Фильтр FAP / DPF обычно устанавливается в непосредственной близости от турбины.



The FAP / DPF filter is usually installed in close proximity to the turbine.

The filter is a ceramic matrix enclosed in a metal case. It is permeated by inlet and exhaust channels. Filter walls are made of porous silicon carbide coated with auxiliary substances. The walls trap particles of soot, and the gas passes through the channels freely.

Regeneration

In the process, a large amount of soot accumulates in the particulate filter, which prevents the free exit of exhaust gases. Therefore, from time to time, it is necessary to periodically free up the filter from soot. The process of freeing the filter from soot is called regeneration.

There are active and passive regeneration of the particulate filter. The regeneration process for the driver is not noticeable.

Виды регенерации в зависимости от степени заполнения фильтра FAP / DPF
Types of regeneration depending on the degree of filling of the FAP / DPF filter

Passive regeneration

With passive regeneration, the process of burning soot is performed continuously and without interfering with the engine management system. Passive regeneration is possible predominantly at engine loads above average, when the temperature of exhaust gases in the filter reaches values ​​of 350 degrees and above. During passive regeneration, chemical reactions of soot conversion to carbon dioxide take place. Acceleration of these reactions is performed using a layer of platinum, which acts as a catalyst.

Active regeneration

The control unit constantly monitors the degree of filter clogging with temperature sensors, pressure drop and air flow. Upon reaching a critical degree of contamination, the control unit starts an active regeneration.

The essence of active regeneration lies in artificially raising the temperature in the particulate filter to 600 degrees or more. Achieving this temperature is possible with directional engine control.

To raise the temperature of the exhaust gases, the control system performs the following actions:

  • Exhaust gas recirculation stops to increase the temperature of fuel combustion;
  • An extra portion of fuel is injected when the crankshaft is rotated 35 degrees. after TDC;
  • With the help of the throttle, the air supply to the engine is reduced;
  • Another additional fuel injection can be made, and the fuel does not ignite in the cylinder, but burns directly in the FAP / DPF filter;
  • The boost pressure is maintained at such a level that the driver could not notice the transition to the regeneration mode.

Warranty 1 year from the date of sale.

Test period 14 days.