With over 30 years experience in the design and production of exhaust purification systems, Bersy now offer the new BPF filter, capable of reducing carbon particles from the exhaust of a diesel engine by up to 90%.
The BPF system is based on a Silicon Carbide filter which is able to retain very fine un-burnt carbon particles.
The Silicon Carbide Filter continuously regenerates during use, with the assistance of a fuel additive.
An oxidising catalyst is applied at the lower part of the filter in order to ensure a substantial reduction of CO and HC exhaust emissions.

Due to the increasingly stringent environmental regulations and the necessity to provide quality working conditions, Bersy are constantly developing new technologies to reduce pollution from the exhaust emissions of diesel engines.
Fine dust or particulate matter (PM 10) is classed as very dangerous, not only to the environment but also the human health.
The micro particles in the particulate can be inhaled and cause serious respiratory tract diseases.
Increasingly, partial or total bans on traffic are being temporarily imposed in some European cities, to avoid official pollution limits beings exceeded.
In some European Countries the application of particulate proof filters (FAP) to works vehicles is compulsory.
Current trends indicate that the implementation of similar regulations in other Countries is inevitable.

	without filter		with filter

It is possible to apply the BPF filter system to all diesel engines, including retrofit applications.
This system can be fitted to buses, power units, earth moving equipment, forklift trucks and any vehicle equipped with gas-oil engine.
The BPF filter system produced by Bersy is certified by VERT in Switzerland.

Filters

Detail of filter

REGENERATION AND ADDITIVE

Regeneration is the process in which the un-burnt carbon particles, retained within the filter, are combusted.
To achieve complete combustion of the particulate matter, temperatures in excess of 650 °C are normally required, which cannot be reached by common endothermic engines.
Various technologies are available for reducing the combustion temperatures necessary for triggering regeneration.
To solve this problem the Bersy BPF filter system includes a fuel borne catalyst (FBC) additive to assist the process of regeneration.
The FBC additive is dissolved in the fuel, reducing the temperature of regeneration to 280-300°C; combustion temperatures typically experienced with vehicle exhaust gases.

The FBC additive is an extremely soluble, organic metallic compound, which is measured directly into the gas oil tank.
An additional tank is installed inside the vehicle and the dosing can be either a manual or electronically automated system.
The intrinsic chemical and physical features, as well as very low additive concentration (appox. 1000 ppm) ensures the FBC additive complies with EN590 rules.

FITTING INSTRUCTIONS

The BPF filter make use of the high temperature of the exhaust gases to improve  the efficiency of the oxidising catalyst, and allow complete regeneration to take place.
The best  performance is achieved when the BPF filter system is installed as close as possible to the engine, and the connecting pipes and filter are insulated.
It is necessary to install the BPF filter to the exhisting exhaust with flexible piping, in order to avoid breakages due to vibration.
To simplify assembling, the BPF  filter is supplied with counter flanges, gaskets, bolts and fixing brackets.

Fork Lift truck application

Additive tank

Pressure line

MAINTENANCE

The BPF filter does not require any periodical maintenance, as the filter remains clean due to the elimination of carbon particles and organic residues during filter regeneration.
The only inorganic compound not eliminated by filter regeneration is the ash produced by the combustion of lubricating oil.
This ash must be removed by heat treatment (>600°C) in a furnace after approximately every 1500 working hours, depending on the operating conditions and maintenances of the engine.
This service is offered by Bersy and our authorised dealers.
Due to its specialised application, the oxidising catalyst (located in the lower part of the filter) dos not required planned maintenance. However, we recommend cleaning the catalyst every 3000 working hours.
The cleaning process consists of washing the catalyst with warm water and neutral detergent, in order to remove any un-burnt carbon particles that may have been deposited on the surface of the catalyst.

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