Doc inlet temp during regen. Now this truck is back and will not regen. The truck is in...

a. If the DOC inlet pressure starts out high above 10 kPa (1.45

Passive regeneration typically occurs when the temperature of the aftertreatment DPF is above 3160C [601 OF]. This occurs during highway driving or driving with heavy loads. Since passive regeneration occurs naturally, it is considered to be normal engine operation. No fuel is added to the exhaust stream during passive regeneration.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 ...SUBJECT: Modified Parked Regeneration Concerns ISSUE The call center has received a number of calls regarding concerns about the modified parked ... modified parked regeneration utilizes increased DOC inlet temperature to clean the DOC inlet face. Excessive torque loads can cause parked regenerations to abort. In some cases the . 19 TS-6 - 4 -I replaced the DOC inlet and outlet temp sensors along with the DPF outlet sensor and all are reading within 3 degrees of each other when the engine is cold. The exhaust system is good with no leaks. The CAC and intake system tested ok with no leaks. The exhaust temps get up to about 487 degrees when the procedure aborts.(10-25-2018, 09:04 PM) oscar0627 Wrote: (10-25-2018, 07:49 PM) reddan Wrote: Hi! I have DD15 GHG14 and when i start the regen in a couple mintes Exhaust Manifold is over heating (RED).... inlet temperature sensor. Source: Cummins Quickserve. 2009 Cummins ISL Air Intake Overview ... DOC w/ DPF Emissions Control Systems Service. Exhaust, Intake and ...- During the high speed portion of the test, inlet NOx levels remain above 500 ppm, and outlet NOx levels are approximately 300 ppm as expected. - DTC P220E may be generated when this condition is observed. Replacement of the sensor returns values to the expected range: - If the above condition is present: • Replace the Inlet NOx SensorThe SCR temperature would be even lower than the DOC inlet temperature due to heat transfer to the DOC and DPF catalysts, both upstream of the SCR catalyst. During cold-start and other low exhaust temperature conditions such as idle and low load, higher NO x conversion can be achieved if thermal management strategies are implemented to increase ...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.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.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.- Observe exhaust gas temperatures from DOC Outlet Temp, DOC Inlet Temp and DPF Outlet Temp. - Refer to Aftertreatment Diagnostic Manual Supplement for information regarding OBFCT. 4. If OBFCT runs successfully, go to Step 7. 5. If OBFCT aborts, replay OBFCT using Service Maxx and observe Aftertreatment temperatures and diagnostic trouble codes. 13) Monitor DOC inlet temperature. It MUST be greater than 400°C (750°F). If it is not above 400°C (750°F), block off part of the radiator with cardboard. Be careful that coolant temperatures do not go high enough to cause a Check Engine light. 14) Continue to monitor the DOC inlet temperature to make sure it is greater than 400°C (750°F).If the DOC inlet pressure starts out high above 10 kPa (1.45 psi) and decreases during the parked regen., this indicates the DPFs were plugged and the parked regen cleared them. If the DOC inlet pressure starts above 6 kPa (GHG14, 0.8 psi), and stays high, the DOC is considered plugged.DOC face plugging, or DOC sulfur poisoning due to not using Ultra Low Sulfur Diesel (ULSD) fuel. Therefore, the AFI tip should be cleaned and the DOC inlet should be inspected before replacing the AFI. Follow the procedures in Guided Diagnostics to inspect and clean the DOC. Service Regeneration Once the soot level reaches 170%, the engine is ...Apr 7, 2013 · When the fan turns on the DOC temperature increases to almost 480F and as soon as the fan shuts off it goes back down to 440F. Obviously it's not reaching the 500F+ for the fuel to start dosing. No exhaust or boost leaks. Here are some of the data I wrote down during the parked regen: DPF DIFFERENTIAL PRESSURE: 0.1hg 11. 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 DOC inlet temperature sensor? a. Yes; replace the HC doser block. Refer to section "Removal of the Hydrocarbon Doser Block ". Verify repair. b.Pressure drop and temperature during active regeneration (500°C) DPF inlet temperature: 500°C; Soot load: 4.1 g/dm 3. ΔP C - DOC pressure drop; ΔP F - DPF pressure drop; F - Fuel flow rate T C1 - DOC inlet temperature; T C2 - DOC outlet temperature T F1 - DPF inlet temperature; T F2 - DPF outlet temperatureDuring 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 ...How to Reduce DPF Regens. Stiction is the sticky friction caused by byproducts of burnt oil. High pressure builds heat in tight-tolerance applications and extreme heat causes the oil to burn, oxidize and create layers of sludge and deposits. Fuel injectors, pistons, rings, and a variety of other engine components are continually susceptible to ...- Observe exhaust gas temperatures from DOC Outlet Temp, DOC Inlet Temp and DPF Outlet Temp. - Refer to Aftertreatment Diagnostic Manual Supplement for information regarding OBFCT. 4. If OBFCT runs successfully, go to Step 7. 5. If OBFCT aborts, replay OBFCT using Service Maxx and observe Aftertreatment temperatures and diagnostic trouble codes. There is always something . Excessive idling does cause the DPF to need a regen more often. The Pete I was in, it was recommended that if we had to idle due to temps, that we raise the idle to 1500 to help keep the DPF hot enough to regen itself. However, with the other issues you said it has, sounds like it needs to see Mr. Peterbilt.After it stopped my truck requested another park regen. If you’re needing that many regens, you may need a new filter or perhaps a sensor. You should go see your truck manufacturer. I should add that 200° is normal temp for your dash to show. Mine goes up to about 225° before the fan kicks in and brings it back down to 200°.DOC inlet 500-600F DPF inlet starts to increase once regen starts. DPF outlet will increase after DPF inlet starts building temp and heat transfers through DPF. DPF outlet may peak slightly above inlet temp but should down below the inlet temp. …Jan 15, 2017 · 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. Check the diesel particulate filter (DPF) assembly and check for any exhaust leaks, cracks, signs of melting or excessive deposits. Check the diesel oxidation catalyst (DOC) filter assembly and check for any exhaust leaks. Check the exhaust brake valve for full functionality. Check for any excessive ash accumulation in the DPF filter assembly.Vocational, Technical or Tra... 5,816 satisfied customers. I have detriot DD 15 freightliner 2013. I changed the DEF. I have detriot DD 15 freightliner 2013. I changed the DEF Pump and leveling valve. Now running parked forced regen, SCR Inlet Temp is …How to spot a failed DOC.You can tell by watching your temperatures during a regen. If your DPF intake is lower then your DPF outlet, and theyre both above 8...If DPF outlet temp stays above the inlet temp then the DOC isn't working probably. Likely face plugged and allows a rich fuel mixture to burn inside DPF instead of DOC. DPF temp should be in the 1000-1100F range. If DPF temp reaches around 1300F, regen will shut down to prevent damage. There are 3 temp sensors but they might be …May 22, 2012 · The AFI wont kick in tell the DOC and DPF inlet temps reach 500+*f and the DOC temp must stabilize. Whats the turbo command %, turbo speed, boost pressure, EBP, and engine load during a regen? CAT Factory Trained & Cert. Heavy Equip+Truck Systems. 11. 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 DOC inlet temperature sensor? a. Yes; replace the HC doser block. Refer to section "Removal of the Hydrocarbon Doser Block ". Verify repair. b. 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. Catalyst (DOC), a chemical reaction occurs, and the exhaust system temperature increases to a level that oxidizes the soot in the filter. W2005917 Aftertreatment Fuel Injector (AFI) The Discharge Recirculation Valve (DRV), mounted on the charge air cooler inlet pipe, increases exhaust system temperature by recirculating air back into the ...NOTE: The sensor box (item 8) contains the SCR inlet and outlet NOx sensors, DPF outlet pressure sensor, and the DOC inlet pressure sensor. 1. DOC Outlet Temperature Sensor. 2. DOC Inlet Pressure Sensor Port. 3. DOC Inlet Temperature Sensor. 4. Front Heat Shield. 5. DEF Nozzle. 6. Exhaust Outlet. 7. DEF Metering Unit. 8. Sensor Box (see note ...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.CM871 High DOC temp during regen [Server Time: 10/15/2023 05:21:32 am] This Forum is English-Only!!!,... Donations help keep the lights on around here, …Oct 6, 2023 · How to spot a failed DOC.You can tell by watching your temperatures during a regen. If your DPF intake is lower then your DPF outlet, and theyre both above 8... intake manifold pressure: 6.0-6.5 inhg percent load: 0 turbo actuator position commanded: 96% turbo actuator position: 96% dpf soot load: normal coolant temperature: 209f doc inlet: 432f dpf inlet: 421f dpf outlet: 411fThe 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 ...The T2 sensor, at the DOC outlet, provides feedbacks for closed loop controls. A fast response control system ensures the DOC outlet temperature stays on target while engine operations vary considerably. To verify the tight DPF inlet temperature control, an active regeneration was enabled during a NRTC test. The results are shown in Figure 8 ... 13) Monitor DOC inlet temperature. It MUST be greater than 400°C (750°F). If it is not above 400°C (750°F), block off part of the radiator with cardboard. Be careful that coolant temperatures do not go high enough to cause a Check Engine ight.l 14) Continue to monitor the DOC inlet temperature to make sure it is greater than 400°C (750°F).The T2 sensor, at the DOC outlet, provides feedbacks for closed loop controls. A fast response control system ensures the DOC outlet temperature stays on target while engine operations vary considerably. To verify the tight DPF inlet temperature control, an active regeneration was enabled during a NRTC test. The results are shown in Figure 8 ...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;2018 volvo vnrRequred regen on dash does not Go awaySent filters out for cleaningInatlled back same thisOn regen doc temp stays at 600, dpf inlet 800 and dpf outler 470Put new 7th injector and 7th inj … read moreCOOLANT TEMPERATURE: 209F DOC INLET: 432F DPF INLET: 421F DPF OUTLET: 411F Last edited: Jun 10, 2017. 4vmach1, Jun 10, 2017. 4vmach1, Jun 10, 2017 #71 + Quote Reply. Trucking Jobs in 30 seconds. ... During one of the parked regen the delta-p set a out of range on the data monitoring, but hasn't done it since then. ...Performance Check -Low Temperature ATD". Are the inlet NOx sensor and outlet NOx sensor readings within 50 Parts Per Million (PPM) of each other? a. Yes; Go to step 22. b. No; replace the inlet NOx sensor. Refer to section "Removal of the Selective Catalytic Reduction Inlet NOx Sensor". Go to step 22. 22. Reconnect the DEF dosing unit ...SFN 10-42R ZTSE6031 Restrictor Plate Tool (on vehicle DOC cleaning tool for MaxxForce 7 engines) IK0700030 Determining a DPF's "health" on a used truck IK0700032 DPF Snap Accel Test (Quick Test) IK0700035 DPF replacement- critical steps to perform after replacing or cleaning a DPF WIL2800030 DOC Damage as a Result of Improper CleaningDuring 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. ... Refer to section "Removal of the Intake Pressure/Temperature Sensor". Verify repairs. 11. Visually inspect exhaust system for leaks or damage, including manifold, gaskets ...This fault sets when the DOC inlet temperature does not reach a minimum of 270°C (518°F) during a regeneration. Monitored Parameter: DOC Inlet Temperature Typical Enabling: Conditions Engine running, regeneration active: Monitor Sequence None: Execution Frequency Always: Typical Duration None: Dash Lamps MIL, CEL: Engine Reaction NoneTractor was towed in with engine warnings on, and in shutdown mode.Active faults for soot level high, and failed regen. due to temp. Inlet DOC temp only at 425, wont go high enough to start dosing fuel.9. Start the engine and run a Parked Regen. Monitor DOC inlet pressure and engine speed during the regen. Compare your DOC inlet pressure reading to the screen shots and descriptions below in (a and b) to determine what step to go to next. a. If the DOC inlet pressure starts out high above 10 kPa (1.45 psi) and decreases during the parked regen ...Throttle Valve Actual NOT USED DURING A PARKED REGEN Fuel Comp Pressure 85 ... 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 toDuring a regen the boost psi should be under 10 psi for engines with out a recirculation valve, with the recirculation valve it will be slightly lower. If boost psi is too high remove the sra and verify the turbo sector shaft sweep. It should be smooth and feel a solid stop both ways (there is a tool for verifying full sweep).mixture during a Regen process of the Aftertreatment system. The ITV is common for all medium duty MaxxForce engines. Exhaust Gas Temperature (EGT). Sensor.CM871 High DOC temp during regen - tariqzai - 04-12-2020. Hi everyone, I have regen issue with my 2009 Volvo with CM871. During Regen instead of DOC temp staying steady and DFP temps going up, this engine shows DPF outlet temp staying steady while DPF intake and DOC temps keep going up (1000+). I have this truck for 3 years and every forced ...11. 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 DOC inlet temperature sensor? a. Yes; replace the HC doser block. Refer to section "Removal of the Hydrocarbon Doser Block ". Verify repair. b.Jan 1, 2022 · The SCR temperature would be even lower than the DOC inlet temperature due to heat transfer to the DOC and DPF catalysts, both upstream of the SCR catalyst. During cold-start and other low exhaust temperature conditions such as idle and low load, higher NO x conversion can be achieved if thermal management strategies are implemented to increase ... Active regeneration is usually not noticeable to the driver. The vehicle needs to be driven at speeds above 30 mph for approximately 20 to 30 minutes to complete a full regeneration. During regeneration, the exhaust gases reach temperatures above 1,000°F (550°C). Active regeneration is usually not noticeable to the driver. Ash Loading 2013年2月12日 ... Monitor temperature rise across DOC during regen. Little<br />. or no ... Disconnect DOC Inlet Temperature Sensor and inspect connector for ...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,Hello sir I have this Volvo d13 vn 2012 The problem is while the regeneration (parked/ driving) The doc inlet temperature does not go above 320F The turbo is brand new and injectors are new too What else is is responsible for rising the temperature before dosing starts The temperature doesn't even reach that it can start dosing fuel What could ... After it stopped my truck requested another park regen. If you’re needing that many regens, you may need a new filter or perhaps a sensor. You should go see your truck manufacturer. I should add that 200° is normal temp for your dash to show. Mine goes up to about 225° before the fan kicks in and brings it back down to 200°.You are correct the inlet should be higher then the outlet, in the above post I just stated in backwards. During the regen mine were reversed, (inlet low, ... My DPF inlet temp will reach 1250, outlet temp ... JMBT. 08-03-2016, My DOC inlet never goes over about 650oF and usually stays in the low 6's. Quick serve says 550-750 is ...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 T2 sensor, at the DOC outlet, provides feedbacks for closed loop controls. A fast response control system ensures the DOC outlet temperature stays on target while engine operations vary considerably. To verify the tight DPF inlet temperature control, an active regeneration was enabled during a NRTC test. The results are shown in Figure 8 ... Tractor was towed in with engine warnings on, and in shutdown mode.Active faults for soot level high, and failed regen. due to temp. Inlet DOC temp only at 425, wont go high enough to start dosing fuel.Had a forced Regen done and off I went. 150 miles later the same code came back again. so I ignored it for another 250 miles and then second alert saying Air Intake system problem. Had a second Regen done and noticed Inlet manifold pressure was very high but as the regen was going on this issue reduced to normal levels.During vehicle operation, active regeneration is performed when the accumulated soot and ash reach boundary limits. In this operation, the particulate soot is ...Regen Temperature- Out Of Range Low Table 1. SPN 3556 /FMI 1 Description This code sets when the exhaust temperature does not increase above the modeled threshold when a regeneration is enabled. Monitored Parameter DOC outlet temperature sensor Typical Enabling Conditions Regeneration enabled, 1100 to 2050 rpm, 50% to 100% engine load.1 NUMBER: 2 ATS 07 S.M. REF.: Listed in Table 1 ENGINE: ATS DATE: April 2007 SUBJECT: UPDATES TO AFTERTREATMENT SYSTEM TROUBLESHOOTING PUBLICATION: 7SE63 The Aftertreatment System Technician's Guide has been revised. MANUAL REFERENCE Section 6.1, Mechanical Troubleshooting 9.1, SPN 3242/FMI , …After cleaning the doc it was reinstalled on the truck, reset doc/dpf counters. Performed manual stationary regen, the truck kicks up to 1200-1300 to start regen, the turbo speed starts at around 42k and turbo actuator 92%, egr valve position consistently stays at 0%, exhaust gas pressure about 140, intake manifold pressure about 12.5.. Now this truck is back and will not regen. The truck is in during an engine bench test in this study. Based on th CM871 High DOC temp during regen - tariqzai - 04-12-2020. Hi everyone, I have regen issue with my 2009 Volvo with CM871. During Regen instead of DOC temp staying steady and DFP temps going up, this engine shows DPF outlet temp staying steady while DPF intake and DOC temps keep going up (1000+). I have this truck for 3 years and every forced ... 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 ... A typical mid-efficiency boiler or water heater operated wit Tractor was towed in with engine warnings on, and in shutdown mode.Active faults for soot level high, and failed regen. due to temp. Inlet DOC temp only at 425, wont go high enough to start dosing fuel.DOC face plugging, or DOC sulfur poisoning due to not using Ultra Low Sulfur Diesel (ULSD) fuel. Therefore, the AFI tip should be cleaned and the DOC inlet should be inspected before replacing the AFI. Follow the procedures in Guided Diagnostics to inspect and clean the DOC. Service Regeneration Once the soot level reaches 170%, the engine is ... After cleaning the doc it was reinstalled o...

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