Car Emission and Fuel System Repair In Dubai

Your emissions control system consists of several devices working together to reduce the amount of harmful gases that come out of your car. Here are the devices that make up the emissions control system:

• Positive Crankcase Ventilation (PCV) system.
• Evaporative Emission Control system.
• Exhaust Gas Recirculation (EGR) system – mostly only present in diesel engines.
• Secondary Air Injection system.
• Catalytic Converter.
• Exhaust Pipes.

The PCV is one of the more complex devices to understand. Meanwhile, the evaporative emission control system – or EVAP for short – is relatively simpler.

It’s essentially a system that controls and prevents fuel vapor from escaping the fuel system. Rather than letting them escape and pollute the atmosphere, it traps the fuel vapor using a charcoal canister.
Afterward, the engine can open a purge valve to draw the fuel vapors out of the canister. As you’d expect, the engine then recirculates the fuel vapor into the engine via the intake manifold.

As the name suggests, the EGR system recirculates exhaust gases back into the engine. Seems pretty straightforward, no? Rather than letting the exhaust gases escape through the exhaust pipes, why not use them to power the engine again? But it’s actually more complex and cleverer than that.

By recirculating the exhaust gases and mixing them with air, it lowers the oxygen level inside your engine. As a result, your engine can combust the fuel and air mixture at a lower temperature. And a lower combustion temperature will result in lower Nitrous Oxide (NOx) levels. Needless to say, NOx gases are very harmful to the environment.

Unlike the other systems we’ve mentioned, the secondary air injection does not work with the engine. Rather, it works with the exhaust system. The system consists of a pump and a valve.

The simplest explanation is that this system injects fresh air into your car’s exhaust system. The pump will suck in air when necessary, and then the valve will open when the Engine Control Unit (ECU) deems it necessary to pump air into the exhaust system

This is arguably the most important component in your car’s emissions control system. Unlike the other components that focus on recirculating vapors and exhaust gases, the catalytic converter’s job is to filter these harmful gases before it escapes the exhaust system.

The catalytic converter works by using valuable metals such as platinum, palladium, and rhodium. These metals are rare and valuable, which is why catalytic converters are valuable and thieves often go after them.

The exhaust pipe, as we’re sure you’re aware, is a series of pipes and tubing that allows exhaust gases to escape. It consists of the exhaust manifold, which is a series of tubing that comes out of the engine. And then it connects to the front pipe and into the catalytic converter.

The catalytic converter usually sits – or hangs to be accurate – in the middle of the car. It then has another pipe that connects to the muffler, a device to control the sound output of the engine. Then it will finally lead to the tailpipes where the exhaust gases will escape.

Since many emissions systems work in conjunction with the engine’s intake system, it can affect your car’s performance if one of them is faulty.

For example, the secondary air injection system monitors the amount of hydrocarbon gases coming out of the engine. If it gets the wrong reading, it can trigger the Engine Control Unit (ECU) to do something that it’s not supposed to (such as introducing more air than necessary) that can affect performance.

Other components can also cause performance loss. For example, an EGR that’s stuck open may introduce too much exhaust gases. This makes the engine starve for oxygen, which can affect performance.

In addition to performance loss, your engine may end up using more fuel if you have an emissions system problem. This usually happens when the EVAP system isn’t working properly and allowing fuel vapors to escape rather than recirculating them.

As a result, your engine uses more fuel to keep it running since the fuel vapors aren’t helping with the combustion.