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| Wynns launch EGR valve cleaners for diesel vehicles |
Most cars meeting the EURO3/EURO4/EURO5 specifications are equipped with an EGR valve(Exhaust Gas Recirculation). It is used on all types of diesel fuel systems: in-line pumps, rotary pumps, common rail, pump injectors.
The system leads exhaust gases to the air intake manifold, enriches the mixture in the combustion chamber and decreases the internal combustion chamber temperature. This results in a reduction of NOx emissions.
Common problems
• Inlet valve position:
Indirect and direct diesel injection systems inject fuel from a position beyond the inlet valve.
Injected fuel and cleaning products applied through the fuel system do not come into contact with the air intake manifold and inlet valves. These components cannot be cleaned by tank treatments or products applied through the fuel injection system.
• EGR in diesel:
The exhaust gases returned to the air intake manifold and inlet valves are hot and contain impurities like soot particles. This results in a large accumulation of carbon/ tar like deposits, and leads to insufficient and irregular air flow. The fuel / air mixture is disturbed, which reduces the efficiency of the engine.
The EGR valve also becomes very dirty. The opening distance is reduced and this can lead to valve sticking.
• Diesel air intake manifold and inlet valves:
In engines without an EGR system, the air intake manifold and inlet valves will mainly dirty up by oil from the PCV (Positive Crank Ventilation). So even engines without EGR, can have dirty inlet valves and air intake manifold.
In engines with EGR system, the dirty exhaust gases will increase deposit formation in this area, in addition to the fouling due to the PCV.
The fouling of the air intake manifold and inlet valves will lead to disturbance of the air management towards the combustion chamber.
For the driver this results in:
• Starting problems
• Irregular idling
• Lack of acceleration
• Loss of power
• Increased fuel consumption
• Higher exhaust emissions
• EGR system failure warning
SOLUTION
The perfect engine cleaning is a two-fold process for all diesel engines:
EGR3 – 200 ml Aerosol Preventive and curative treatment: cleans the “dry part” of the diesel engine
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DP3 - 500ml Liquid: Preventive use or after-treatment for diesel engines with in-line or rotary injection pump: cleans the “wet part” of the diesel engine
or
>
EGR3 – 200 ml Aerosol Preventive and curative treatment: cleans the “dry part” of the diesel engine
+
HP3 - 500ml Liquid: Preventive use or after-treatment for diesel engines with common rail or pump injectors: cleans the “wet part” of the diesel engine.
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