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Crucial Things That You Didn’t Know About Secondary Air Injection Systems

Most people may not know what secondary air systems are. If you know more about vehicles, then you know what the secondary air injection system is. Some of the people do not have a clue on this. By reading this article, you are going to learn more about the secondary air injection systems.

Secondary air injection system is a system that injects air into the exhaust stream to allow full combustion of the exhaust gases. This is a strategy that controls emulsion in vehicles. This strategy working method depends on the way injection of air occurs into the exhaust stream. It also depends on the point that air used to enter the exhaust system. This has been varying over the cause of revolution.

The first systems used to inject air into the exhaust stream through the point that was too close to the engine. All the unburnt and partially burnt fuel in the exhausted was completely burnt by the use of oxygen produced by this kind of systems before the ejection. On those first days of an invention of these systems, there used to be more unburnt fuel in the exhaust stream. But air injection helped to minimize the ejection of this unburnt fuel from the tailpipe. As a result they worked so well and this helped to reduce the amount of unburnt fuel the exhaust.

Secondary air injection systems come in two types that is the umped air injection system and the aspirated air injection systems. Lets get to know what pumped air injection system is. This systems use air pump. The engine is what that turns the air pump through the motor. The screen is rotated to filter the air taken in so that dirty particle that can damage the system is eliminated. Then air gets it the injection point under minimal pressure. Also there is a part that is known as the check valve. Its work is to prevent exhaust going back to the air injection system. Serious damage can result from the exhaust getting back to the air injection system.

Aspirated air injection systems uses negative pressure in the exhaust when the engine is at idle state. The valve known as aspirator valve is put on the injection point so as air can be drawn into the exhaust. This valve is normally very sensitive. Short negative forces get into the exhaust when the engine is in idle state. These forces leads to the air getting drawn into the exhaust system through the aspirator valve. This kind of injection systems are commonly used in the modern vehicles such as Toyota.
I hope you have learnt a lot on the secondary air injection systems. Do more research on the systems and learn more.

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