Doc inlet temp during regen.

1688 posts · Joined 2013. #1 · Feb 14, 2014. I was having a discussion with someone and I told him that when I do a parked regen on our Cummins equipt buses the exhaust temp at the manifold gets up to 1350 degrees. He called bull shit, even though I am watching it on a computer screen through Cummins Insite, and he said the Duramax only …Ask the driver if a parked REGEN was attempted and what was the result? 4. ... If black smoke is not seen during Step 2, proceed to Step 3. 3. Perform Onboard Filter Cleanliness Test (OBFCT) ... the test is running and can be replayed later for review. - Observe exhaust gas temperatures from DOC Outlet Temp, DOC Inlet Temp and DPF Outlet Temp.Temperature should begreater than 100 C (212 F) prior to parked regeneration initiatesand runs indefinitely. (IntakeThrottleonSeries60,DD15,andMBE 4000 or Exhaust Flap onMBE 900 does NOT close, andthereisnoHESTL ampafter25minutes.)Engine in smoke control modeMonitor smoke control status during regen. Smoke controlstatus should be Inlet ...During an active regen, engine exhaust temp is slightly higher than normal but not significantly. Maybe 50 to 100 deg. F at best. The high temps are in the exhaust NOX/DPF filter. Everything upstream of that is pretty much normal from my observations. See this video on an entire active regeneration.

You said Doc inlet pressure was high and after regen the pressure dropped down ? Any noises coming out from -box during regen or during driving? mhyn, Nov 3, 2019. mhyn, Nov 3, 2019 #5 + Quote Reply. Nov 4, 2019 #7. jdpromo33 Bobtail Member. 13 2. Nov 3, 2019 0.Inspect the intake pressure/temperature sensor and wiring connector for signs of damaged, bent, spread, corroded or ... During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if directed at combustible materials. The vehicle must be parked outside. 3. Start the engine; using DiagnosticLink start the NOx Sensor ...

What temp should doc inlet be during regen? Engine rpm should then become stable around 1275 rpm. 13) Monitor DOC inlet temperature. It MUST be greater than 400°C (750°F). What is doc outlet temperature? The DOC inlet temperature should be greater than 400°C (750°F). Ambient temperature will have a large impact on DOC inlet …During a stationary (parked) regeneration, these are the typical values for a healthy system. EGR Differential Pressure - Less than 12.7 mm-Hg [0.5 in-Hg] ... Using onsite I can get the engine to start the regen cycle but doc intake temp will not get above 500F.

During a proper regen, DOC inlet temp, or temp #1, should be about 550-600. DOC outlet temp, or temp #2, should be 1000-1200 degrees. DPF outlet temp should be 950 to 1200. In a healthy system, the engine injects fuel into the exhaust during a regen that the DOC burns to create the heat. The heat is used to BAKE down the collected soot in the DPF.Exhaust Gas Temp 572, DOC Inlet Temp 572, DPF Outlet Gas Temp 1013 and still the REGEN process did not want to finish. The tech cleared my ash level to see if that would work and nothing. I got some recommended solutions, drop and burn the DPF / DOC, sensors, etc..Here's the "normal" values for all of the Aftertreatment Parameters during a Parked Regen. *Note* On a DD13, there are 3 important parameters that will have higher values than the DD15 or DD16. -Turbo Speed 38,000-42,000 rpm. -SCR Inlet NOx Sensor 400-500 ppm. -Actual DEF Dosing Quantity 900-1100 g/h.My unit starts the regen but the DOC inlet temp is only getting to 420 degrees and is not allowing to burn off for the regen. I'm getting codes 4752, (intake manifold pressure sensor) 3719, 3711. ... Vehicle fails to regen. During High idle regen, DOC outlet max 479 F , Command boost pressure 0%, fuel doser inject ...Blew out the DOCs during regen I have DPF inlet- 0.363 DPF outlet- 0.072 DOC inlet temp-813 DOC outlet temp-779 Fuel doser-0.0% Fuel cutoff valve- 0.0% Baro-14.43 Intake mani - 14.71 AFS tech, Aug 8, 2019. AFS tech, Aug 8, 2019 #7 + Quote Reply. Aug 8, 2019 #8. spsauerland Road Train Member.

Vehicle fails to regen. During High idle regen, DOC outlet max 479 F , Command boost pressure 0%, fuel doser inject ... DOC inlet temp doesn't go past 495 degrees. DOC stops around 515 and DPF temp is at 495. Checked for exhaust leaks = none f ...

Yellow (Solid or Flashing) to indicate the need to regenerate the Diesel Particulate Filter. ... Observe exhaust gas temperatures from DOC Inlet Temperature, DPF Inlet Temperature and DPF Outlet Temperature. ... perform 1 additional OBFCT. - Watch for temperatures to raise (please note that during high soot load levels the DOC and DPF ...

If the system doesn't reach this then something is wrong with engine, not the DOC or injector. If the temps reach 525 or better and the inlet temp to the DPF stalls around 800 or is very very slow to reach 1000+ then something is wrong with the injector or DOC. Monitor these parameters during a regen, and you should have these values;This pdf document provides technical service bulletin (TSB) for diesel engine vehicles with 1-Box or Two-Box emissions package. It explains how to diagnose and repair the Diesel Oxidation Catalyst (DOC) inlet pressure sensor and the DOC itself. It also includes the procedure for performing a parked regeneration.Blew out the DOCs during regen I have DPF inlet- 0.363 DPF outlet- 0.072 DOC inlet temp-813 DOC outlet temp-779 Fuel doser-0.0% Fuel cutoff valve- 0.0% Baro-14.43 Intake mani - 14.71 AFS tech, Aug 8, 2019. AFS tech, Aug 8, 2019 #7 + Quote Reply. Aug 8, 2019 #8. spsauerland Road Train Member.Jan 1, 2016 · The step response of DOC- out temperature can be acquired by injecting constant amount (i.e. 50 mg/s) of Diesel fuel into the exhaust pipe upstream of the DOC during different steady states (i.e. constant inlet temperature and mass flow rate of exhaust gas). If the system doesn't reach this then something is wrong with engine, not the DOC or injector. If the temps reach 525 or better and the inlet temp to the DPF stalls around 800 or is very very slow to reach 1000+ then something is wrong with the injector or DOC. Monitor these parameters during a regen, and you should have these values;The regen temps, at least to me, look good for a 2007 emission engine. How does the dpf diff. psi look during the regen? Was the 7th inj. cleaned and if so did you …A) A forced regen will take approximately 40 minutes. It will cycle through 6 stages during this 40 minute period. If the Regen cycle takes longer than this, something else is still wrong. b) During a forced regen cycle, The DOC will get to about 550F, and the doser will activate, first, usually in short intervals, then come on solid.

Obtain a Regeneration log file and monitor the DOC inlet and DPF outlet pressures. Refer to section "Performing a Parked Regeneration - GHG17". Does the DOC inlet pressure ever go to zero during the regeneration? a. Yes; replace the DOC Inlet Pressure sensor. For 1-Box™, Refer to section "Removal of the Diesel Oxidation Catalyst Inlet ...Start looking at it, doc temps run up to 700 degrees within the first 5 minutes but I never see any pressure kick up from the Hydrocarbon doser. By 10 minute mark all temperatures holding steady around the 400-500 mark. Checked intake/exhaust leaks, intake throttle valve, egr valve, ensure all items are were they should be during the regen process. Throttle Valve Actual NOT USED DURING A PARKED REGEN Fuel Comp Pressure 85 - 92 psi ... DOC Inlet Temp 700 - 950 ° F DOC Outlet Temp 1050 - 1150° F DPF Inlet Pressure 0.5 psi - 1.0 psi DPF Outlet Pressure 0.01 psi to 0.9 psi Doser Injection Status gradual increase from 5% to 45% • DOC inlet temp must be at 525° F or higher toEngine Based Measures Overview. It has been long recognized that increased exhaust gas temperature levels can be achieved through a number of engine management measures [379].While engine based options to thermally manage exhaust gas are inefficient due to the engine and exhaust system mass upstream of the exhaust catalysts and the …Joined: May 2015. 1 03-21-2017, 02:27 AM. Good evening, I have a maxxforce 13 that won't do a passive regen. I've have clean and replaced the doser, I have removed and had the doc and dpf. I have replaced the map. During. Park Regen temps get to 1200 or so. I've checked the tubes for differential pressure sensor and they are clean.Nov 7, 2014 · Here's the "normal" values for all of the Aftertreatment Parameters during a Parked Regen. *Note* On a DD13, there are 3 important parameters that will have higher values than the DD15 or DD16. -Turbo Speed 38,000-42,000 rpm. -SCR Inlet NOx Sensor 400-500 ppm. -Actual DEF Dosing Quantity 900-1100 g/h. Engine Speed 1100 rpm (1275 rpm during first 12 minutes of regen then 1100 rpm for fuelmap ending in ZGS 999) Turbo Speed 45,000 – 60,000 (turbo is used to create pressure in the DD13 and DD15AT only) Fuel Cut Off Valve 100% (once DOC inlet temp reaches 536° F) Engine Torque Around 5% Actual Torque Load 15 – 18% (greater than 20% may ...

DOC temp looks good but the DPF temp is too low. ... Dd15 does not go past 370 degrees during regen , ... It is in regen zone 2. I started regen. Regen started. DOC inlet go to 750 and both others are around 750 as …Now this truck is back and will not regen. The truck is in a fail safe mode for soot. Initially it was setting a SPN 3351 FMI 7 for the engine exhaust back pressure valve and the DOC/DPF were not getting hot. I adjusted the valve and the DOC inlet hit 500 and outlet hit over 600, DPF outlet was able to get over 500. The truck is not dosing fuel ...

Fault code 3719-0 doc in 450 doc out 480 dpf out 460ish I conforemed the exhaust flaper is closing when a regen is ... Intake Manifold Pressure/Temperature Sensor Turbo Inlet Pressure/Temperature Sensor Turbo Outlet Temp Sensor (MBE 900 only) Turbo inlet elbow Air inlet piping ... Have it installed but still not building heat during regen.Malfunctioning temperature sensors. The temperature sensors, spread through the aftertreatment system, measure the exhaust going into and out of each filter. The first sensor is in the DOC and the last is after the SCR. The sensor’s readings measure how well the system is working, and a faulty sensor can interfere with the regen process. Vehicle fails to regen. During High idle regen, DOC outlet max 479 F , Command boost pressure 0%, fuel doser inject ... DOC inlet temp doesn't go past 495 degrees. DOC stops around 515 and DPF temp is at 495. Checked for exhaust leaks = none f ...After DOC reaches operating temperature and stabilizes (see callout 2, graph 8), verify DOCOT and DPFOT signal values are greater than 900°F (482°C). In this graph, DOCOT and DPFOT are less than 900°F (482°C). 2. Verify Diesel Oxidation Catalyst Inlet Temperature (DOCIT) signal value is between 550°F (287°C) to 800°F (427°C).Monitor smoke control status during regen. Smoke control status should be 0. DOC Inlet Temperature Sensor non-responsive Monitor DOC inlet temperature. No temperature change after engine startup indicates sensor problem. Intake Throttle Valve not functioning properly Listen for the ITV to sweep at key up. Turbo not functioning properly Perform ...The regen temps, at least to me, look good for a 2007 emission engine. How does the dpf diff. psi look during the regen? Was the 7th inj. cleaned and if so did you …erite filter substrate, the filter peak temperature during regen - eration usually should be controlled under 1,100 °C to avoid filter melts, and the maximum temperature gradient usually

Right away I noticed that the DOC inlet temperature reading was at 662 F (default max value as I found out) @ 1.7V, yet the outlet temperature was 419 F @ 1V . These thermo-couples run on 5V and generally have a much larger spread between temperature/voltage correlation. Now it was time to let the data talk.

The inlet temperature was 200°C and the detector temperature was 220°C. Nitrogen was used as the carrier gas. There was a flow rate of 2 mL/min, no split injection, and an …

The DOC (diesel oxidation catalyst) is the first filter that creates the heat ... This is where the inlet temperature sensor is located. *Want to know more ...9. Monitor DOC inlet and outlet temperatures. Are the temperatures within 25°C (45°F) of each other? 9.a Yes; Check valve lash and engine brake rocker lash. If either is out of adjustment, readjust the lash, perform a parked regeneration, and continue with the initial diagnostics that directed you to DOC inlet temperature will not Start looking at it, doc temps run up to 700 degrees within the first 5 minutes but I never see any pressure kick up from the Hydrocarbon doser. By 10 minute mark all temperatures holding steady around the 400-500 mark. Checked intake/exhaust leaks, intake throttle valve, egr valve, ensure all items are were they should be during the regen process.Mack MP8 regen issues. 2012 CXU613 with 2012 fault codes so it's not a 2013. Truck arrived at the shop at the beginning of the week. Soot load was level 5. performed a parked regen. DOC inlet temp was bias. DPF outlet temp stayed above inlet temp during regen.During regen the exh temps are (inlet 739) (after cat 969-978) (outlet 877-904) It goes back to idle and soot level reads the same and only code active is for soot level. ... I would think if there was an issue with the DOC the inlet temp would be off and other temps as well. For example, if the DOC is face plugged the outlet temp usually ...Fengjun Yan. Control of diesel oxidation catalyst (DOC) outlet temperature is critical for downstream diesel particulate filter regeneration, but is challenging to control due to the non-minimum ...During testing, temperature of exhaust gas can become 1500°F (800 °C) and the temperature of exhaust system surface can cross 1300°F (700°C). These temperatures are hot enough for igniting or melting common materials, and can also lead to serious personal injury. Even after the vehicle has stopped moving,erite filter substrate, the filter peak temperature during regen - eration usually should be controlled under 1,100 °C to avoid filter melts, and the maximum temperature gradient usuallyNo; replace the drifted SCR temperature sensor and Go to step 11. Review the parked regen log file. Compare your DOC inlet pressure reading to the screen shots below (steps 12, 13, and 14) to identify a possible cause of the aftertreatment noise. Is the DOC Inlet Pressure starting out high above 10 kPa (1.45 psi) and decreases during a parked ... Malfunctioning temperature sensors. The temperature sensors, spread through the aftertreatment system, measure the exhaust going into and out of each filter. The first sensor is in the DOC and the last is after the SCR. The sensor’s readings measure how well the system is working, and a faulty sensor can interfere with the regen process. Once the nozzle was cleaned out it would do the regen and the high soot level code went inactive. I'm working on an 08 Western Star with a 60 series Detroit with EGR and DPF. It is a 06R0998711 engine. It has an active 3719 High Soot Level code. The engine runs for about 2 minutes and then shuts down.

Mack MP8 regen issues. 2012 CXU613 with 2012 fault codes so it's not a 2013. Truck arrived at the shop at the beginning of the week. Soot load was level 5. performed a parked regen. DOC inlet temp was bias. DPF outlet temp stayed above inlet temp during regen.During a parked regen on a DD15, the SCR Inlet NOx sensor should be around 200-300ppm. DD13 SCR Inlet NOx sensor is slightly higher around 400-500ppm. The SCR Outlet NOx should be somewhere in the neighborhood of 5-25ppm for all DD Platforms. The other true method in testing the NOx sensors is to perform a regular parked regen, then perform ...WARNING!!: ⚠️⚠️⚠️Always use the proper tools and safety equipment to perform this job. Failure to perform the job correctly can result in personal injury or ...Also, is the DOC and DPF due for cleaning? It sounds like you have access to Insite. When running a regen you need to open up data monitor and watch all the exhaust temps and doser injector state. Once a regen is initiated the DOC inlet and DPF inlet need to reach about 525 -550 degrees.Instagram:https://instagram. apa stylingi'm a jayhawk lyricssd craigslist farmtorstol seed osrs Mar 15, 2020 · The stage1 is before regeneration phase. The DOC inlet temperature, the DPF inlet temperature, and the DPF outlet temperature are sequentially lowered due to the heat loss. The stage2 is during regeneration phase. The DOC inlet temperature slightly reduces due to the vaporization heat of methanol. Perform the low temperature ATD regen; Refer to section "EPA10 Perform Performance Check - Low Temperature ATD". Go to step 6. 6. After the low temp ATD regeneration has run for 20 minutes, monitor the DOC outlet temperature sensor reading. Is the DOC outlet temperature sensor reading within 25°C (45°F) of the other exhaust temperature sensor ... my metroclaim comcommunity based resources Nov 13, 2014 · During a parked regen on a DD15, the SCR Inlet NOx sensor should be around 200-300ppm. DD13 SCR Inlet NOx sensor is slightly higher around 400-500ppm. The SCR Outlet NOx should be somewhere in the neighborhood of 5-25ppm for all DD Platforms. The other true method in testing the NOx sensors is to perform a regular parked regen, then perform ... radio hobbyists crossword clue Ran an onboard filter cleanliness test to get the regen temps. Soot load was at 44%. Doc intake temp is 775 to 800. Dpf inlet is 1150 to 1185. Dpf outlet is 1220 to 1270. TC1TOP IS 1.5. EGR position is 35%. International is telling me its not eligible for the crankcase filter update, last 8 of vin: EL771725.What temp should doc inlet be during regen? Engine rpm should then become stable around 1275 rpm. 13) Monitor DOC inlet temperature. It MUST be greater than 400°C (750°F). What is doc outlet temperature? The DOC inlet temperature should be greater than 400°C (750°F). Ambient temperature will have a large impact on DOC inlet …The catalyst should also exhibit low light-off temperature, to enable active regeneration during periods of operation with lower engine load. Figure 4 illustrates the light-off performance with post injection of fuel and exhaust injection of fuel for a fresh and aged DOC. The x-axis represents the inlet temperature of the DOC.