Air Injection: Description

Peugeot gasoline engines use air injection to decrease exhaust emissions and improve performance of the catalytic converter. The systems inject fresh air into the exhaust manifold or catalytic converter. The air mixes with exhaust gases and permits any unburned gasses to burn in the exhaust pipe.

Systems on 505 models include an air pump with relief valve, diverter valve, thermostatic air slide valve, electrovalve, check valves, delay valve, vacuum switch, and air silencer.