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Multiple regen cycles can happen per day if a truck is in heavy operations. If the engine is underperforming and a continual dirty exhaust is occurring, then many regens may be required. Depending on the maintenance and upkeep of the truck, there may be less regens required with proper maintenance and attention to your truck’s general upkeep. Unfortunately, there is no predefined number of regens to be expected. And with the fragile condition of the DPF itself, the less regens required, the better.” How Long Does It Take for DPF to Regenerate? “An exhaust system is incredibly expensive and susceptible to abuse just like anything else. “The entire system relies on the engine running well and doing everything possible to avoid repair or replacement of the DPF,” says Kyle. If the exhaust gas recirculation (EGR) system is failing, with improper recirculation of the exhaust, the truck runs with a lot more particulate and a lot more soot, therefore also clogging the DPF even more. “With the accuracy in modern computerization and the rigs that control that whole system, it’s something you want to pay attention to and address relatively soon before you enter ‘limp mode’ or ‘De-rate’ where the truck will not operate over 20 to 30 mph in some cases.” In doing so the many sensors in the system will calculate the particulates prior to the DPF and post, recognizing a lack in the operation of the DPF.
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If the DPF regen cycle is not taking place, or not completing a full cycle, a check engine light might illuminate on your dash. With the efficiency of drawing that air into the truck for the combustion and then releasing it through the exhaust, it’s imperative that the least amount of restriction exists for enhanced performance of the motor.” “The diesel engine is essentially a compressor in the airflow.
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“When the engine is being choked down with a clogged filter, the driver may recognize just a lack in performance, throttle response, and power,” says Kyle.
#2011 dodge 4500 service def system how to#
If something happens that indicates a necessity, or to simply avoid the process while driving, we can override the system to regen.” How To Tell When a DPF Cycle Occurs?ĭepending on the manufacturer and the gauges installed in the truck, the driver may notice an increase in exhaust back-pressure, and/or simply a lack of performance. “These circumstances happen when the owner/technician recommends a regen prior to the automated process. “We force the truck’s computer to initiate the process prior to the parameter requests that happen with the active regen,” says Nace.
#2011 dodge 4500 service def system manual#
“You can sometimes hear a ‘hissing’ type noise, or a different sound from the engine.” First time diesel owners often think there is something wrong with their trucks, but the DPF regen is a normal, often recurring, requirement included with diesel ownership.Ī forced regeneration cycle is a manual process that takes place at the diesel shop with a certified technician initiating the cleaning of the DPF. “You’ll notice a reduction in power during a regen,” notes Nace. A computer sensor monitors the DPF and a dashboard indicator light notifies the driver that the regen is taking place, or the DPF is now cleaning. “The DPF Regen contains the heat of the exhaust, adding up to temperatures exceeding 1000 degrees Fahrenheit, so that the filter is depleted of its buildup and returns to proper functioning capabilities.” What Are DPF Regeneration Cycles?Īn active regen cycle is a normal process that takes place as the truck is going down the road. “A regeneration cycle occurs by essentially ‘cooking’ the filter clean again,” says Kyle Nace of Response Equipment Specialists (Kalispell, MT). In doing so the filter can more efficiently capture particles within exhaust gases and more easily pass through the airflow from intake to output, causing less stress on the engine itself. Among other components along the way, the DPF captures many of these particulates, helping eliminate the ‘dirty exhaust’ emanating into the air.Īs an exhaust component that is continually clogging from the perpetual operation of a diesel truck, this filter is built into a system where it essentially cleans itself of the buildup. Each combustion cycle within a diesel engine includes un-burnt components of diesel fuel, carbon, and other particulates that accumulate into visible smoke from the exhaust stacks. The Diesel Particulate Filter (DPF) is an assist in emissions-control included within diesel exhaust systems, to catch the remaining particulates left within the combustion cycle of the diesel engine.
AugWhat Does DPF Stand For & What Does it Do?
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