At these temperatures the soot particles are converted into carbon dioxide through aĬombustion reaction with nitrogen dioxide.Īctive Regeneration (Also known as dynamic) This occurs primarily at higher engine load, such as in highway driving, when exhaust gas temperatures range from 350☌ to 500☌. Regeneration is needed every 300 – 800 km (200 – 500 miles), depending on driving style Passive Regeneration (Also known as spontaneous) During passive regeneration the soot particles are continuously burned without the intervention of Engine Control Module. When the counter pressure reaches 200 to 300 mbar (depending on manufacture), cleaning should start. This gives a computational estimate about the exhaust flow, which the Engine Control Module (ECM) compares to the counter pressure created by the particle filter. The determination is based on the amount of intake air, injected fuel and load factor. The Engine Control Module (ECM) of the engine determines continually the amount of the soot mass (particles) in the particle filter and estimates the remaining operational range.
It's generally a standard to still have this as an automatic feature on new trucks (however optional OEM features are available as well).Figures mentioned here are general figures and may very from brand to brand EGR systems particularly introduced in 2004 for Cummins engines and Cats had tons of problems and were modified for better usage after 2006. Now instead of a lot of regen systems you see people with SCR (Selective Catalytic Reduction) and DEF (Diesel Exhaust Fluid- Urea) dosers (2011 models). I work as a sales rep for Kenworth, I see this all the time.
just plug it back in before an inspection and regen and you're good to go. (Canadians mostly) in my case all yank off their EGR filters by pulling the plug so their engine breaths easier and gets more power. They're also convenient because you can regen when you want to, or if your filter is clogged you can avoid it and get the truck serviced as opposed to clogging your filters and possibly causing damage. It's also going to cause you to burn more fuel and force you to upshift once you complete the grade because you're not in the right RPM band anymore. If your engine does a regen while on an incline you'll have to drop 1-2 gear which is wear and tear on the trans, clutch, and frame for your 5th wheel. Typically auto regen systems are bad when on steeps and hill grades.
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