FAP Particle Filter


FAP Particle Filter

Introduced on the 607 in 2000 in a world debut, the FAP particle filter is a system that has become a worldwide standard. It is now fitted to all Australian Peugeot HDi passenger cars as well as to the Expert Professional.

FAP reduces particle emissions to a quantity that is almost impossible to measure. In fact, tests have shown that the FAP particle filter removes more than 99.9% of the fine particles before they could escape into the environment.

How FAP works

Phase 1: filtering
This first phase involves catching the soot particles in a porous, silicon carbide filter.

Phase 2: elimination of particles
The second step, eliminating the soot particles, takes place in the regeneration phase. This periodic operation (after several hundred kilometres) is automatic and transparent to the driver. It simply consists in burning the soot particles that have accumulated in the filter, at a very temperature.

The sequential regeneration takes place on account of the combined action:
- Of the common rail system, which carries out a post-injection of fuel that helps increase the temperature of the exhaust to the combustion temperature for soot particles.
-Of the additive that is automatically put in very small doses into the fuel tank, which brings down the temperature to 450°C as required for burning off the soot. This unique FAP additive technique ensures Peugeot vehicles eradicate particles in a reliable manner over time.