![do down load the program be for u take the dpf off do down load the program be for u take the dpf off](https://i2.wp.com/obd2technology.com/wp-content/uploads/2021/08/D_669022-MPE47111138410_082021-F.jpg)
This fuel reacts with a catalyst and burns the built up soot out of the DPF. Newer engines allow parked regeneration. Then it switches on an extra fuel injector that shoots fuel into the exhaust stream. One method involves the ECM tweaking engine parameters to increase the exhaust temperature. This is common among trucks with a lighter duty cycle, because soot accumulates while idling or going slowly through traffic. Active RegenerationĪctive regeneration happens when changes in engine operation are required to get the ECM to burn out, or some catalyst is introduced, or both. Under these conditions, soot burns off as fast as it is generated. Diesel trucks on a heavy duty cycle, for example climbing a lot of hills, should have no problem passively regenerating their DPF. No active changes in engine operation are involved. Once the exhaust temperature reaches a certain point, for example while driving at high speeds, the built up matter in the DPF turns to ash. Passive regeneration happens automatically. Regeneration may happen one of three ways: passive, active, or forced. The built-up soot is thereby removed as gaseous carbon dioxide. Diesel Particulate Filter (DPF) RegenĭPF regen happens when the trapped particulates heat up enough to combust and turn to ash. In addition to regeneration, periodic DPF cleaning is required too. This process of burning is called regeneration. A warning light usually shows up indicating it is time to literally burn out the accumulated soot. Over time, soot builds up in the filter walls and must be cleared out. So much of the DPM is removed that you could place a white handkerchief over the exhaust pipe and it would stay white.ĭPF maintenance is relatively straightforward. It’s a wall-flow filter usually made of cordierite, silicon carbide, or a ceramic monolith.Īs the exhaust gases pass through the filter, it captures somewhere between 85%-100% of diesel particulate matter (DPM). DPFs grab soot from your exhaust before it blows out into the environment. Starting with 2007 model years, diesel trucks are “blessed” with a diesel particulate filter (DPF). This is called regeneration.ĭiesel Particulate Filter (DPF) Regen is a relatively recent issue facing truck and fleet owners. The soot must be literally burned out of the filter.
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Over time, soot builds up in the DPF filter walls.