The filter is made of a honeycomb structure in silicon carbide (SiC) through which the exhaust gases are filtered. The particulate, made up mainly of particles of carbon of varying dimensions, is kept back, right down to particles of the smallest dimensions.

The electronic control unit (ECU) monitors the level of backpressure in the exhaust, and regulates the dosing of the additive (via a metering 12/24V pump) and stores the operational parameters of the system.

A tank installed on the vehicle contains the necessary additive for activating the regeneration of the filter. This iron-based additive is dissolved into the diesel fuel, reducing the ignition temperature of the residual carbon to 300°C instead of the normal 600°C. The CAM FBC consumption is about 1,5 litres every 1.000 litres of diesel-oil burned by the engine.

It is not necessary to use special diesel fuels (for example ULSD, Ultra Low Sulphur Diesel).

The limited quantity of additive dosed into the diesel fuel does not affect its physical/chemical characteristics, which remain in total conformance to the UNI-EN590 standard.