Exhaust Gas RECIRCULATION: Description

All Peugeot diesels are equipped with an exhaust gas recirculation system to reduce NOx emissions. A controlled amount of exhaust gas is introduced into the intake manifold during certain engine loads. This lowers combustion temperatures and nitrogen oxide formation.

The system consists of an engine speed sensor on the flywheel housing, 2 load sensors on the injection pump, 3 electrovalves, vacuum controlled throttle flap, 2-stage EGR valve, and electronic control box (ECB).