Diesel Particulate Filters

Diesel particle filter -  Clean instead of replace

At Central Garage Snaith we have a solution to the problem of clogged diesel particle filters.

Our  suppliers have developed a cleaning solution ( patent applied for )

The replacement of such filters as  is no longer necessary. This cuts costs for clients saving hundreds of pounds  and  increases our  clients satisfaction. A Cleaning solution is sprayed onto the filter through extant apertures and dissolves the residues inside. This is then burned off during the regeneration programme.

The particle filter cleaning set from TUNAP contains the MP 131 diesel particle filter cleaner and the MP 132 cleaning concentrate and is available immediately.

If diesel vehicles are mainly used for short distances this filter in the exhaust system is rarely really hot enough to burn off all the residue. It therefore clogs up. In such cases a  regeneration programme starts automatically involving injecting more fuel to achieve a higher temperature.

Such regeneration is sometimes impossible, however. Examples of this are in city traffic or jams. If this occurred repeatedly the filter had to be replaced.

Diesel Particulate Filters

Diesel Particulate Filters

TUNAP identified the problem and developed the first particle filter cleaning set that cleans clogged filters quickly, easily and economically. It thus saves a lot of money.

The procedure is to first remove the temperature or pressure sensor in the exhaust system. A probe is inserted through the aperture and used to spray TUNAP MP 131 diesel particle filter cleaner directly onto the filter.

This should be done twice with an interval of about ten minutes so that the solution can work in.

TUNAP MP 132 concentrate is then used to flush out. This dissolves and distributes the residue in the filter so that the regeneration programme can burn it off. The sensor is then
reinstalled and the garage then need only start regeneration manually (if the engine does not do this itself) and under take a twenty-minute test drive.

The whole business is very environment friendly. The dissolved particles are burn to  ashes and do not burden the environment. The cleaning solution evaporates.

If you would like further information and a quotation call us on 01405 659 412 and ask for one of our diesel specialist technicians.

More Information on Diesel Particulate Filters

The Function of the Diesel Particulate Filter

Defining the term “Diesel Particulate Filter”

Legislative bodies in Europe are now getting stricter with regard to the degree of emissions that vehicles are allowed to emit. The black smoke that emanates as exhaust gases when diesel fuel burns are often visible in the form of soot or particulates.

Diesel particulate filters are now fixed to the exhaust system of most of the diesel engines to ensure that it complies with the emission legislation rules.

The function of the DPF or diesel particulate filter is therefore quite similar to the catalytic converter that is normally fitted to cars that use petrol. It works to eliminate diesel matter or soot particles from the exhaust system of the diesel engine. While 85% or more can be cleared in normal circumstances, nearly 100% of the soot is removed with the wall-flow particulate filters of the diesel when the vehicle is fully loaded.  Therefore, if one were to fit the right filter that functions properly, the result would be little or no smoke emanating from the exhaust pipe.

The functions of the DPF

The DPF is mounted closest to the engine and looks like a normal exhaust silencer. The ceramic structure comprises of a honeycomb design, which filters the exhaust gas and reduces the flow to the minimum so that it works efficiently. When the particulate matter is forced by the exhaust gases to settle on the walls, through which it has to pass the amount of pollution is automatically restricted.

Maintenance and care

This should be done periodically, as the capacity of the filter can get clogged with matter. If not, back pressure mounts up resulting in damage of the car engine.

The particulate filter is so designed that it automatically starts cleaning itself by “regeneration”. When the DPF load fills up to nearly 80%, the DPF temperature increases and begins burning the particles of soot. DPF begins the process of regeneration, when the car is being driven at high speed or on the highway as the temperature of the exhaust has to be quite high. This condition is called “passive regeneration”, as the driver is unaware of the reaction taking place.

This sort of regeneration may not get triggered if the car is in slow gear or running short distances. A warning amber light on the dashboard may read “Check manual – soot filter full”! Instructions will be found in the manual. The message disappears once the regeneration process is completed.

Regular regeneration is necessary especially when there is sufficient warning given. If this soot continues to build up as a result of not regenerating, another message reading “engine service required” will flash on the screen. In this case, the vehicle will necessarily have to be taken to a dealer to forcibly undergo the regeneration process. The end result will be replacement of the DPF.

To ensure proper regeneration for smaller cars, it may be necessary to use an additive to allow the car to run at low temperatures. An additive that is being used for  1.6 and several 2.0 diesel vehicles, which are fitted with DPF.  This blend of iron and cerium solution is added under the fuel tank to another tank that can hold about 1.8 litres. The consumption of this additive is minimal and it is filled as part of the schedule when the car goes through the regular servicing.

During the process of regeneration, certain amount of ash residue results when soot particles are being burnt. Therefore, after the 75,000-mile service, it is vital that the DPF additive is replaced.

It is therefore important to know when the DPF has to be changed and when to add the additive for the proper functioning of the vehicle.

Is it compulsory to use DPF?

The need to use particulate filter in cars that run on diesel is becoming essential, as it not only helps to achieve better exhaust gases, but meets all emission legislation criteria.

Tags: diesel particulate filters, diesel particulate filter expert, particulate filter, diesel particulate filter cleaning, diesel expert Yorkshire, diesel expert goole, diesel expert selby, diesel expert doncaster

One Response to Diesel Particulate Filters

  1. Joe Rongen says:

    Hello,I are having issues with my Mercedes 311 Sprinter relating to the particulate filter clogging.
    I use castrol low ash syn oil and the van is always running hot,it does 1200kms a day at 1ookmh.
    Recently it started to loose power and it was identified as the filter and was given a burn out(regeneration) only to last a day it was laking power again so we gave it another regeneration and this time the van went well for 2 weeks untill the power loss came back.The computer is telling us that we are burning of the carbon deposits ok but our ASH reading is to high or wont clear does this mean the filter needs replaced or is there another option or product available to fix this,I have been quoted $3400 nz for a replacement filter,Regards Joe

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