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Some observations that I've made. I use the Torque app on my cellular to monitor different sensors/attributes on my diesel. DPF differential pressure is one of them. I've noticed at idle pressures not much higher than .230 psi regens will occur. Which means driving above 35mph and maintaining to kick off a Regen from what I've observed. My drive cycles tend to facilitate regens and I don't have to bother with special trips to manage regens and dpf soot levels. But when I'm out of normal drive cycles and making consistent short commutes around town I take care to make specific drives to achieve regen. Typically I see differential pressure values at around .050 psi after a full Regen. I've also noticed that if a Regen is kicked off and you're unable to maintain consistent road speed to complete the cycle, it can be completed stationary 0mph by putting the vehicle in neutral and keeping rpms around 2k. I don't recommend this as best practice or doing it over combustible materials such as tall grass, but the process does work.
I know when a Regen is kicked off by monitoring the exhaust gas temp bank 1 sensor 4 temp. Temps will quickly rise from 700-800F to 1200-1300F at roadway speeds ~60mph and maintain until complete. When the Regen is complete temps will quickly fall back to normal range.
My TD6 is still on its first DPF @97k miles and I've never seen an Amber DPF warning and I partially contribute to keeping regens happening when the vehicle thinks it needs one.
Top screenshot is Regen happening at ~60mph this morning. DPF pressure is top second from the left and exhaust temp is top 4th from the left. The bottom pic is a stationary Regen from last week.
How long does a regen take usually?
I've never gotten an amber DPF light (I'm at @90k miles) However, I do get a CEL and a code attributed to high soot levels, etc.
That said, I just took a 2k mile trip with hours upon hours at 65+mph. I would imagine that would have cleared out everything, however my CEL is still on. I'm really trying hard not to replace my DPF and feel a cleaning would suffice. But that's easier said than done.
I've never gotten an amber DPF light (I'm at @90k miles) However, I do get a CEL and a code attributed to high soot levels, etc.
That said, I just took a 2k mile trip with hours upon hours at 65+mph. I would imagine that would have cleared out everything, however my CEL is still on. I'm really trying hard not to replace my DPF and feel a cleaning would suffice. But that's easier said than done.
I'm curious what you're dpf differential pressure value is at idle to compare with mine. Do you have an OBD Bluetooth adapter and care to download the Torque App?
I'm curious what you're dpf differential pressure value is at idle to compare with mine. Do you have an OBD Bluetooth adapter and care to download the Torque App?
Some observations that I've made. I use the Torque app on my cellular to monitor different sensors/attributes on my diesel. DPF differential pressure is one of them. I've noticed at idle pressures not much higher than .230 psi regens will occur. Which means driving above 35mph and maintaining to kick off a Regen from what I've observed. My drive cycles tend to facilitate regens and I don't have to bother with special trips to manage regens and dpf soot levels. But when I'm out of normal drive cycles and making consistent short commutes around town I take care to make specific drives to achieve regen. Typically I see differential pressure values at around .050 psi after a full Regen. I've also noticed that if a Regen is kicked off and you're unable to maintain consistent road speed to complete the cycle, it can be completed stationary 0mph by putting the vehicle in neutral and keeping rpms around 2k. I don't recommend this as best practice or doing it over combustible materials such as tall grass, but the process does work.
I know when a Regen is kicked off by monitoring the exhaust gas temp bank 1 sensor 4 temp. Temps will quickly rise from 700-800F to 1200-1300F at roadway speeds ~60mph and maintain until complete. When the Regen is complete temps will quickly fall back to normal range.
My TD6 is still on its first DPF @97k miles and I've never seen an Amber DPF warning and I partially contribute to keeping regens happening when the vehicle thinks it needs one.
Top screenshot is Regen happening at ~60mph this morning. DPF pressure is top second from the left and exhaust temp is top 4th from the left. The bottom pic is a stationary Regen from last week.
Best post ever. “We” have rules about drive cycles to preserve our 19 TD SE “Lizzie” for fun stuff. It mostly involves a M3SR though getting high centred in snow & 1 hour of escavation recently has me in the dog house. I will check this out with a Carplay compatible app & will report back.
While this is our 3rd Landy and we waited decades for a NA diesel, I am in a bind as to next truck. We just bought out our lease as a holding pattern. I don’t see solid state happening soon, which has me looking at the only largish diesel SUV on sale in NA.
Originally Posted by RyanLR3
Some observations that I've made. I use the Torque app on my cellular to monitor different sensors/attributes on my diesel. DPF differential pressure is one of them. I've noticed at idle pressures not much higher than .230 psi regens will occur. Which means driving above 35mph and maintaining to kick off a Regen from what I've observed. My drive cycles tend to facilitate regens and I don't have to bother with special trips to manage regens and dpf soot levels. But when I'm out of normal drive cycles and making consistent short commutes around town I take care to make specific drives to achieve regen. Typically I see differential pressure values at around .050 psi after a full Regen. I've also noticed that if a Regen is kicked off and you're unable to maintain consistent road speed to complete the cycle, it can be completed stationary 0mph by putting the vehicle in neutral and keeping rpms around 2k. I don't recommend this as best practice or doing it over combustible materials such as tall grass, but the process does work.
I know when a Regen is kicked off by monitoring the exhaust gas temp bank 1 sensor 4 temp. Temps will quickly rise from 700-800F to 1200-1300F at roadway speeds ~60mph and maintain until complete. When the Regen is complete temps will quickly fall back to normal range.
My TD6 is still on its first DPF @97k miles and I've never seen an Amber DPF warning and I partially contribute to keeping regens happening when the vehicle thinks it needs one.
Top screenshot is Regen happening at ~60mph this morning. DPF pressure is top second from the left and exhaust temp is top 4th from the left. The bottom pic is a stationary Regen from last week.
