GOSS TALKS EGR SYSTEMS

Goss has redesigned and developed a new process in manufacturing EGR coolers

The primary function of the EGR system is to reduce Nitrogen oxide (NOX) emissions by redirecting exhaust gases back into the engine, resulting in the reduction of combustion temperature and reducing nitrogen oxide gases.
This process is known as exhaust gas recirculation (EGR) and is one of the principal methods used to reduce nitrogen oxide emissions to the atmosphere from diesel engines.
The gas recirculated by the EGR system can be considerably hot, especially in vehicles with diesel engines.
For this reason, many diesel engines are fitted with EGR coolers to lower the temperature of the exhaust gases before they enter the engine.
The addition of the recirculated gas back into the engine lowers the heat ratio during the power stroke; Goss says this can slightly reduce the amount of power produced by the engine.
Often this is the motivator for people to fit an EGR blanking plate to counter this marginal loss in power.
Goss says the slight gains in power certainly do not outweigh the potential problems which may arise by fitting a blanking plate.
It explains that EGR blanking can lead to a build-up of unburnt fuel and oil residue in the intake system and can also cause damage to other components in the EGR system and the engine itself.
Goss suggests the best solution is to maintain the vehicle’s factory EGR system and avoid modification.
Goss says it has seen many EGR Coolers fail due to increased EGR temperatures when the system has been tampered with or modified in some way, with the most common cause being an EGR blanking plate restricting the correct flow in the system. Another common reason is restrictions in the engine’s cooling system, for example, a heater core deliberately bypassed or a blocked radiator.
Many late model diesel engines are also known to have issues with OE manufactured EGR coolers failing prematurely, mainly due to a flaw in the original design.
Goss says it has redesigned and developed a new process in manufacturing EGR coolers to produce a product less prone to cracking and leakage.
When fitting a new Goss EGR cooler, Goss says you should ensure the vehicle’s entire EGR system is working efficiently and correctly to prevent any future issues.
It says that Goss EGR Coolers are heat, stress, pressure and resonance tested to meet or exceed OE specifications and offer substantial cost efficiencies to the aftermarket. They are supplied with fitment gaskets where required. Goss – vehicle mechatronics says it offers the aftermarket a truly genuine alternative when searching for quality products.

To see the full range of Goss EGR Coolers, visit www.goss.com.au