What is the function of the Pulse Air filter?

The function of the Pulse Air filter is indeed to draw air into the exhaust system. In many vehicles, the pulse air system functions to inject fresh air into the exhaust stream, specifically during certain engine operating conditions. This process aids in the reduction of harmful emissions by promoting the oxidation of unburned hydrocarbons and carbon monoxide before they exit the exhaust system.

By introducing air post-combustion, the system helps to increase the combustion efficiency and supports the vehicle's emission control efforts. This makes it a crucial part of the emissions control strategy, as it helps ensure that vehicles comply with environmental standards aimed at minimizing air pollution. Understanding this function is essential for emissions inspectors as it relates directly to meeting regulatory requirements and optimizing vehicle performance.