Secondary air injection - Wikipedia
Secondary air injection (commonly known as air injection) is a vehicle emissions control strategy introduced in 1966, wherein fresh air is injected into the exhaust stream to allow for a fuller secondary combustion of exhaust gases.
How Does The Air Injection System and Smog Pump Work?
The air injection system (AIS) is designed to introduce clean air to the engine exhaust as it exits the exhaust manifold or exhaust headers. Exhaust gases are at their hottest as they leave the combustion chambers.
Air Injection System – Diagram , Working , Advantages
Air Injection System – Diagram , Working , Advantages Fuel injection is a system for mixing fuel with air in an internal combustion engine. Functional objectives for fuel injection systems vary but all of them share the central task of supplying fuel to the combustion process.
Secondary air injection system — explained - REREV
2022年11月20日 · The secondary air injection system is an emissions control system that pushes extra air into the exhaust and heats the catalytic converter to get it up and running as soon as possible and reduce the emissions.
Secondary Air Injection – Function, Types, Failure - Danny's …
2023年10月4日 · The air pump – secondary air injection system (AIS), is the last resort, to minimize hydrocarbon emissions. So, combustion requires fuel, oxygen and heat. But, without any one of the three, combustion cannot occur.
Air Injection Technology – Maximizing Performance and ... - Light …
2023年6月23日 · Air injection technology, also known as secondary air injection or air induction, is a method of introducing additional air into a combustion process to promote a more complete and efficient burning of fuel.
Do you need a secondary air injection system? | HowStuffWorks
The air injection smog pump pushes air into the exhaust system right after the exhaust manifold, to help intercept and burn those unburned fuels. The system is critical to help cars achieve government emissions standards. So, the law says you need a secondary air injection system.
Air Injection - Auto Repair Help
The air injection system reduces hydrocarbon and carbon monoxide emissions by creating a combustion process in the exhaust system. As the exhaust gases leave the combustion chamber, an air stream is injected into the exhaust port.
EGR and Secondary Air Injection System - UnderhoodService
2013年1月16日 · The catalytic converter needs two elements the EGR system and air injection systems provide: proper temperatures to reduce NOx and oxygen to burn hydrocarbons. Under ideal conditions, a three-way catalyst can reduce somewhere between 50% and 95% of NOx emissions and 99.9% of the unburned fuel.
Why carmakers install a secondary air injection system
2017年2月11日 · A secondary air injection system is part of a vehicle’s emission system. It’s used to reduce emissions during cold starts when the engine is running on a rich fuel mixture to overcome the cold quenching effect of cold combustion cylinders.