At what percentage of DPF soot loading will the engine shut down?
Engine power will de-rate — by as much as 40 percent — and begin a shutdown sequence. At this point, the operator cannot regenerate the DPF, and the truck must be taken to an authorized dealer to have the DPF removed so it can be cleaned or replaced.
Can you interrupt a parked regen?
To Cancel a Parked Regeneration hold the DPF Switch to the ON position for five (5) seconds and release. A Parked Regeneration will stop if the key is turned to the off position, the truck is put into gear or the parking brake is released. The regeneration will take approximately 20-40 min.
Is it bad to stop a forced Regen?
Regeneration, or regen, of the DPF filter, is the process that burns the soot accumulation that is inside the DPF filter. If you can no longer start a regen then you will eventually get stuck in a derate which will then lead to an engine shut down. Usually, nothing.
How long does a parked regen take?
How long does a parked DPF regen take? It takes approximately 20-60+ minutes. It will continue to regen until the soot level has reached ‘low’ or ‘0%. ‘ Some trucks will let you monitor your soot level gauge on the dashboard.
What are the symptoms of a blocked DPF?
A slight increase in fuel consumption. Increased idle speed. Deactivation of automatic Stop/Start. A hot, acrid smell from the exhaust.
When do you need to Regen a diesel engine?
The driver must stop when the light starts to flash and do a regen before the engine shuts down. Then you need a tow truck to take your vehicle to the dealer for a reboot of the on board computer system.
Where is the Regen switch on a diesel engine?
The regen switch usually found on the dash can be actuated by anyone but if the planets are not aligned for a regen to occur the computer will not allow this to take place. The parameters have to be at a certain level before the on board computer lets the system go into regen mode.
Is there a way to Regen the exhaust system?
Not only can you regen the exhaust system but also monitor the engine. The one parameter you need to watch is the inlet and outlet pressures on the DPF. The maximum allowed pressure differential is 3 psi which determines if the DPF has blockage.
Is there a Regen button on the dash?
The parameters have to be at a certain level before the on board computer lets the system go into regen mode. The regen switch on the dash is for the driver or tech to use if the regen alert dash light starts to come on during a trip.