Air Injection Reactor: Description
An exhaust port air injection system (A.I.R.) used to reduce carbon monoxide (CO) and hydrocarbons (HC) was introduced in 1966 California light duty vehicles. In 1968 air injection systems became nationwide. System adds a controlled amount of air to exhaust gases in exhaust ports, causing oxidation of gases. A.I.R. system consists of a belt driven air pump, connecting hoses, a check valve to protect system from hot gases, injection tubes, anti-backfire valve (early models) and diverter-pressure relief valve assembly (late models). On models with anti-backfire valve, pressure relief valve is incorporated in air pump body.