DIESEL PARTICLE FILTER SPECIALISTS

All modern diesel powered vehicles are fitted with a Diesel Particulate Filter, or DPF, which is a device designed to remove diesel particulate matter or aerosolised diesel exhaust pollution particles. Here at BTE, we are experienced in all system technologies to quickly diagnose and isolate DPF system faults.

HOW DOES THE DIESEL PARTICLE FILTER SYSTEM WORK:



During combustion of the fuel and air mix, a variety of pollutant particles (generically classified as diesel particulate matter) is produced due to incomplete combustion. The composition of the particles varies widely dependent upon engine type, age and the emissions specification; a diesel car or truck equipped with a fully functioning DPF filter will not emit the visible black smoke from the exhaust pipe. However, filters of every kind have a finite capacity and these filters are no different.

DPF filters must be kept clear of accumulated soot. In order to achieve this, the vehicle's onboard computer system (ECU) constantly monitors the state of the filter by measuring the exhaust pressure entering and leaving the DPF, and is then able to calculate the state of the filter and the point at which it needs to undergo auto regeneration.

STAGE ONE

DIAGNOSTIC INSPECTION

Initially our team will complete a diagnostic inspection and interrogation of your engine management and related system(s) to isolate the the fault/ error codes and to monitor live data.

This process is crucial in understanding the values that input the engine management system to complete successful regeneration.

COST: £59.95inc

STAGE TWO

ACTIVE FORCED REGENERATION

Our trained technicians will complete an assessment of the system prequestities to ensure a safe regeneration can be completed.

Once all critical system inspections and analysis has been successful - a forced diagnostic based regeneration will be initiated to 'de-contaminate' the particle filter.

COST: £99.95inc

STAGE THREE

CHEMICAL CLEANING

Due to many factors, a forced regeneration may not be possible. If the ash or soot levels remain excessively high - the filter may be at high impact condition.

Our recommendation is to complete a 'in-situ' chemical de-contamination service. This process includes specific tooling and chemical to access and complete an internal clean of the blocked filter.

COST: £199.95inc

STAGE FOUR

CHEMICAL CLEAN (REMOVAL)

In some extreme cases, the DPF maybe at an excessive soot load of accumulation and both a diagnostic and in-situ chemical process is not successful.

After removal a powerful two way cleaning process combining water, air and specialist agents are needed to wash the filter. This will remove virtually 100% of both soot and ash and renew the life of your DPF.

COST: £399.95inc

WHY DOES THIS HAPPEN?

A diesel particulate filter (DPF) is a filter that captures and stores exhaust soot (some refer to them as soot traps) in order to reduce emissions from diesel cars. But because they only have a finite capacity, this trapped soot periodically has to be emptied or 'burned off' to regenerate the DPF.

This regeneration process cleanly burns off the excess soot deposited in the filter, reducing the harmful exhaust emission and helps to prevent the tell-tale black smoke you used to see from diesel vehicles, particularly when accelerating.

The automatic regeneration process in most vehicles works by the ECU constantly monitoring the flow of exhaust gasses through the filter, and at a specific point it will initiate the procedure. This involves increasing the amount of fuel added to the induction system which in effect creates a fire in the diesel particulate filter (DPF), burning off the excess soot and blowing the ashes out of the exhaust pipe.

Regular long journeys at high speeds create a higher running temperature and free flowing exhaust gasses which are not ideal for automatic regeneration. Also, if like a lot of people, you only use your vehicle for short local distances, it is unlikely that the vehicle will automatically regenerate the DPF filter.