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Learn More About Secondary Air Injection Systems

Do you have any knowledge about secondary air injection systems? 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.

The exhaust gases are burnt by the air injected into the exhaust by a system that we call Secondary air injection system. This controls the emulsion for the vehicles. This strategy working method depends on the way injection of air occurs into the exhaust stream. Also the point of entrance of the air determines the way the strategy works. As revolution continued, this varied.

The first systems that were first developed allowed injection of air at a 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. There used to be more unburnt fuel in the exhaust in those earlier times of revolution. But air injection minimized the ejection of the unburnt gases from the tailpipe. This resulted in an improvement of the system working and this ensured that less amount of unburnt fuel was in the exhaust.

There are two types of air injection systems namely pumped air injection system and aspirated air injection system. First, let us look at pumped air injection systems. This systems use air pump. This air pump is normally turned by the engine through the electric motor. And the screen that filters the air taken into the exhaust is rotated so as to remove the large dirt that may damage the system. Then under small pressure, air gets into the injection point. Also there is a part that is known as the check valve. This check valve prevents the exhaust getting back to the air injection system. If it happens that the exhaust gets into the air injecting system, a serious damage could result.

Aspiration systems takes advantage of the negative pressure that is in the exhaust when the engine is idle. The aspirator valve closes the air injection pumping point and as a result, clean air gets into the exhaust. The valve is known to be very sensitive. When the engine is idle, short negative forces gets in the exhaust system. These pressure results to air getting into the exhaust system through the aspirator valve. Most of the modern vehicles such as Toyota use this kind of systems.
This is all about the secondary air injection. Do more research on the systems and learn more.

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