EGR technology is one of two technologies that reduce diesel engine exhaust emissions to the level required by Euro IV standards and above. It works by directing part of the exhaust gases into the external recirculation cooler. These cooled gases, which have passed through the EGR valve, are returned to the intake air and then re-enter the combustion process. This reduces the combustion temperature because the aspirated mixture contains less oxygen. The lower combustion temperature produces less nitrogen oxide. The EGR valve is activated only in certain situations, triggered by the engine control unit. If the engine does not reach ideal temperatures, the valve remains blocked.
EGR valve: what is it?
There EGR valve It is a mechanical component that regulates the flow of exhaust gases, which are extracted and reintroduced into the engine's intake. The exhaust gas, sent back to the engine's cylinders, allows them to operate at a lower operating temperature because the heat released by combustion is also reduced. This also helps reduce the car's emissions.
The correct functioning of the EGR is controlled by the engine control unit, and the opening or closing of this valve is entrusted to an electric actuator or, to a lesser extent, a pneumatic one.
This system is capable of varying the degree of opening of the EGR itself, in such a way as to allow the intake of the correct quantity of exhaust gases to be reintroduced into the engine.
The percentage of reused exhaust gases varies between 5 and 15%. However, it is important to underline that the reintroduced exhaust gases do not contribute to the new combustion process.
Furthermore, EGR is completely excluded when the engine is at full throttle, so that its performance is not negatively affected by this system.
An important improvement to the EGR valve is the radiator. Therefrigeratorof exhaust gasesIt's in a double-walled tube. Hot exhaust gases flow through this furnace, which contains soot, which clogs the radiator and reduces its efficiency.
CDR thanks to his intervention superEGR able to completely regenerate the EGR Module components through an intervention that includes the complete disassembly of each individual element, cleaning, grinding, any welding, complete reassembly and verification.
With SuperEGR you extend the life of the EGR Module with a clear saving in time, maintenance and money, on repairs and replacements.
To contact CDR, simply fill out the form on the website, where you can receive a free consultation.
To contact the CDR company, simply fill in the form on the website, which allows you to request a free consultation or quote.