How does the EGR valve work?

As environmental emission standards reach higher peaks, the way that we recirculate engine exhaust gases becomes even more important in achieving the smallest amount of harmful NOx emissions, to meet all the new regulations. Due to this reason, the vehicles became more and more complex and EGR valves become an indispensable part of maintenance and repair work.

This is how the EGR valve works:

After exiting the cylinders, part of the exhaust gases are by-passed through the EGR to mix with fresh air from the intake manifold before entering the engine cylinders.
The timing and the actual exhaust gas quantity are precisely controlled via the EGR valve
This reduces the oxygen content in the fuel-air mixture and thus lowers the combustion temperature in the cylinders
This significantly reduces the concentration of harmful nitrogen oxides in the exhaust gas and also minimises the formation of soot particles, mainly relevant in diesel engines

When does the EGR valve need to be replaced?

Excess carbon deposits might lead to the need of replacing the EGR valve.
In addition, EGR’s operated with system leaks, used with a lack of negative pressure or a missing power supply can lead to malfunctions.

It is advisable to replace The EGR valve at the first sign of a malfunction in order to avoid expensive replacement parts and time-consuming repairs.

Using a stuck EGR valve, whether in an open or closed position, can affect the service life of components directly connected to the exhaust gas recirculation system. In some situations, inadequate exhaust gas recirculation can even lead to irreparable engine damage.

Save your customers from expensive repairs and rely on EGR systems from HELLA!

Additional information on our EGR valves

Exhaust gas recirculation: 4 reasons why you should rely on EGR valves from HELLA

Exhaust gas recirculation (EGR) plays a crucial role in optimising engine efficiency and reducing harmful emissions. As a result, exhaust gas recirculation has long since become an indispensable part of maintenance and repair work in the vehicle workshop.

Efficiency: Lower emissions, improved engine efficiency and therefore lower fuel consumption
Reliable performance: Our EGR valves offer high performance that will satisfy your customers and simplify your day-to-day workshop work
OE know-how: Benefit from our OE expertise in electronics, which we consistently transfer to the independent aftermarket
Quick installation: Easy to install thanks to step-by-step installation instructions that make installing the EGR system a straight forward process

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All products are subject to high quality standards
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How does the EGR valve work?

This is how the EGR valve works:

After exiting the cylinders, part of the exhaust gases are by-passed through the EGR to mix with fresh air from the intake manifold before entering the engine cylinders.
The timing and the actual exhaust gas quantity are precisely controlled via the EGR valve
This reduces the oxygen content in the fuel-air mixture and thus lowers the combustion temperature in the cylinders
This significantly reduces the concentration of harmful nitrogen oxides in the exhaust gas and also minimises the formation of soot particles, mainly relevant in diesel engines

When does the EGR valve need to be replaced?

It is advisable to replace The EGR valve at the first sign of a malfunction in order to avoid expensive replacement parts and time-consuming repairs.

Save your customers from expensive repairs and rely on EGR systems from HELLA!

What HELLA offers

With EGR valves from HELLA, you benefit from reliable quality, quick and easy installation and maximum fitting accuracy. The product range covers a broad spectrum of applications.

The product range is being continuously developed. All products are supplied with installation instructions to prevent incorrect installation and possible related damage.

Additional information on our EGR valves

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