Air Injection System: Operation: Notes

Fresh air is drawn into the air pump through a filter fan. The air is compressed in the pump and then discharged from the pump to the diverter valve. The diverter valve then directs the air to the air distribution system or dumps it through a by-pass port.

Air pressure in this system is maintained at approximately 5 psi by a relief valve incorporated in the diverter valve.

Air from the diverter valve is directed through the air injection mounted check valve. At each exhaust port, a hollow fitting carries air into the exhaust manifold. The air mixes with hot exhaust gases and causes a further burning of the mixture. This reduces hydrocarbon (HC) and carbon monoxide (CO) emissions.