Air Injection System: Operation: Notes

Inlet air to the air pump is drawn in through a centrifugal fan filter at front of pump. Pressurized air leaving the pump is routed through the diverter valve, check valve and distribution pipe (above thermal reactor or manifold) into the exhaust ports behind the exhaust valves. The fresh air ignites and burns the unburned portion of exhaust gases in the exhaust system, thus reducing HC and CO emissions.