Final answer:
The primary purpose of the Air Injection Reaction (A.I.R.) System, also known as the air pump or pulse air systems, is to reduce harmful emissions from internal combustion engines.
Step-by-step explanation:
The A.I.R. system injects fresh air into the exhaust manifold or catalytic converter, promoting the combustion of unburned hydrocarbons and carbon monoxide. This secondary combustion helps convert these pollutants into less harmful substances, such as carbon dioxide and water vapor. The injection of air facilitates a more complete combustion process, enhancing overall engine efficiency and reducing emissions.
Calculation of emissions reduction can vary depending on the engine and system design, but on average, the A.I.R. system can contribute to a significant decrease in harmful tailpipe emissions.
In summary, the Air Injection Reaction System plays a crucial role in minimizing environmental impact by improving the combustion efficiency of internal combustion engines, leading to reduced emissions of harmful pollutants.