What is secondary AIR system?
Secondary-air systems have been successfully employed to reduce such cold starting emissions. To reduce the level of these pollutants, ambient air with a high oxygen content (“secondary-air”) is injected into the exhaust manifold directly downstream of the exhaust valves during the cold starting phase.
What is the purpose of a secondary AIR system?
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 secondary AIR system work?
Secondary air injection systems pump outside air into the exhaust stream so unburned fuel can be burned. Newer aspirated systems use the vacuum created by an exhaust pulse to pull air into the pipe. The latest systems use an electric motor to pump air. These systems are critical for the life of the catalytic converter.
What is primary and secondry air?
Primary air is the main supply of air that mixes with the gas for the fire in the burners themselves. Secondary air is the air which flows around the outside of the burners and is not directly mixed with the gas in the burners. It is needed for combustion but mostly to allow draft to occur thru the furnace.
What does a secondary air injection system do?
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. 1 Development. Oct 12 2019
Do you need a secondary air injection system?
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 .
Where is the secondary air injection system located?
The secondary air injection pump is located under the left corner of the front bumper area.The pump is accessed from under the vehicle with the plastic air dam shield removed.