Doc inlet temp during regen. There is always something . Excessive idling does cause the DPF...

CM871 High DOC temp during regen - tariqzai - 04-12-2020. Hi ev

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 ...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.A typical mid-efficiency boiler or water heater operated with water temperatures in the range of 130° to 140° will prevent condensate problems. Note: A water heater must use a thermostatic mixing valve to provide lower-temperature domestic water in order to prevent a risk of scald injury. This has proven to provide reliable temperatures ...Apr 7, 2013 · 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. 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.Joined: Nov 2011. 6 10-28-2020, 10:36 PM. i have a volvo 2015 d13 with similar issue unit will start regen just fine. but when fuel doser comes up temp 1 is 520 temp 2 starts to climb really fast temp 3 doesnt follow and by the time temp 2 gets to 1000 ( withing 1 minute after doser starts to dose ) it turns off the fuel doser and turbo speed ...3. If all sensors check out okay, perform a Low temp by disconnecting DEF metering unit connector then navigating to the Service routines>DFP then perform a low temp regen. Then monitor DOC inlet temp & DPF outlet temp sensor readings: If the DOC oullet temp sensor reading follows the DOC inlet temp sensor reading, replace the failed DPF.The ignition temperature of a diesel oxidation catalyst (DOC) and the internal temperature-field distribution of the diesel particulate filter (DPF) during active regeneration are investigated during an engine bench test in this study. Based on the dropped to idle (DTI) test, a test method is developed to determine the safe regeneration temperature of the DPF. The results show that when the ...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. 1 12-12-2015, 07:37 AM. cm871 low DOC temp won't reg to clear last code. Prostar ISX CM871 low DOC temp won't regen to clear last code. New turbo. New DOC. Cleaned DPF. Remove EGR and cleaned, no exhaust leaks. Engine temp 200 drg. Fan cycles.a. 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. Go to step 10. b. If the DOC inlet pressure starts above 6 kPa (0.8psi), and stays high, the DOC is considered plugged. Go to step 11. 3 09-15 All information subject ...(11-12-2017, 04:56 AM) trs100 Wrote: (11-12-2017, 02:40 AM) am2000am Wrote: (11-11-2017, 08:49 PM) trs100 Wrote: Hi, Trying to perform parked regeneration on Cascadia with DD15, but when it reach temperature to turn the after treatment injector ON it stays off. All parameters look good only Fuel Doser Injection Status is 0. After treatment injector and …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.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.The forced regen still shows the DOC temp close to the DPF intake temp and the DPF outlet temp stays around 550-600 but the new thing is that forced regen …Using DiagnosticLink during the regen, view AS087 Actual Fuel Mass. Is the fuel mass above 100 mg/st? Yes; ... 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.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 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 regen i did was successful and most of the time DPF differential pressure would be zero after the regen.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. 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.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 …Was given log file from last completed regen on the truck 10 days earlier. Comparing the 2, boost pressure and doc inlet pressure is slightly lower throughout regen. dpf out temp reaches above 1200 but doc out temp is above 1000 as well. Will upload if someone wants to compareJoined: 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.2021年7月13日 ... A blocked doser can prevent the temperature increase necessary for an effective regen. ... If the DOC's inlet face gets clogged with an excessive ...The DPF system is a honeycomb filter, similar to a traditional catalytic converter, that captures and collects particulate soot. The 6.7 Cummins has had a DPF system since halfway through the 2007 model year. 2007.5-2012 models had a completely separate DPF system that sat behind the DOC system. In 2013+ models the DOC and …Once the DOC is heated up, it can produce high-efficiency oxidization of the post-injected fuel for the DPF regeneration. Based on the DOC light-off temperature achieved, the in-cylinder post fuel injection along with further modulation of the air system parameters can be used to reach a sufficiently high inlet gas temperature for the DPF ...Oct 15, 2023 · CM871 High DOC temp during regen. 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 regen i did was successful ... 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.during an engine bench test in this study. Based on the dropped to idle (DTI) test, a test method is developed to determine the safe regeneration temperature of the DPF. The results show that when the inlet temperature of the DOC is more than 240 C, the DOC begins ignition and reaches theJan 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 ... 3. If all sensors check out okay, perform a Low temp by disconnecting DEF metering unit connector then navigating to the Service routines>DFP then perform a low temp regen. Then monitor DOC inlet temp & DPF outlet temp sensor readings: If the DOC oullet temp sensor reading follows the DOC inlet temp sensor reading, replace the failed DPF.a. If the DOC inlet pressure starts out above 10 kPa (1.45 psi) and decreases during a parked regen, this indicates that the DPFs were plugged and the parked regen has cleared them. Go to step 8. b. If the DOC inlet pressure starts above the pressure specified below and stays high, the DOC is considered plugged. Go to step 9. Table 1. Emissions ...I have volvo d13 2016 it doesn’t raise temperature for Regen though the outlet temp sensor doesn’t go higher when 800 F ... 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 ...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. ... i have code 3719 for high soot level …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. Was given log file from last completed regen on the truck 10 days earlier. Comparing the 2, boost pressure and doc inlet pressure is slightly lower throughout regen. dpf out temp reaches above 1200 but doc out temp is above 1000 as well. Will upload if someone wants to comparea. If the DOC inlet pressure starts out above 10 kPa (1.45 psi) and decreases during a parked regen, this indicates that the DPFs were plugged and the parked regen has cleared them. Go to step 8. b. If the DOC inlet pressure starts above the pressure specified below and stays high, the DOC is considered plugged. Go to step 9. Table 1. Emissions ...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.CM871 High DOC temp during regen. 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 regen i did was successful ...DPF inlet should be at this moment, when the fuel is not injected somewhere between 440 and 420. Please verify the reading of the temp sensors on the DOC inlet, DPF inlet, DPF outlet. Let the engine idle for 5-10 minutes and check temperatures. They should be close to each other in slightly descending order.Aug 7, 2019 · 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 Once the DOC is heated up, it can produce high-efficiency oxidization of the post-injected fuel for the DPF regeneration. Based on the DOC light-off temperature achieved, the in-cylinder post fuel injection along with further modulation of the air system parameters can be used to reach a sufficiently high inlet gas temperature for the DPF ...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. Intake throttle valve is working. Will continue on diag tomorrow. Any thoughts? Thanks.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 ...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. 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 ...Still not temp. Have fault traced with G/D. Replaced egr valve. checked diff sensor,tubes,vgt lever,boost leaks,fuel pressure to A/T fuel doser and made sure it wasn't plugged. 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.Tue 11/28. 90° /76°. 65%. Times of clouds and sun with a couple of showers. RealFeel® 98°. RealFeel Shade™ 95°. Max UV Index 5 Moderate. Wind ENE 2 mph.If everything is checking out, then yes, the vanes are not adjusting properly. On just idling, the truck should be at a 160 degree engine temp and the exhaust should be around 520. As it gets warmer, the exhaust will get warmer. 180 degree truck should have a 600 degree exhaust at idle for this engine and the regen should start activating, the ...Hi Mike. No fault codes, regen starts both fuel pressure s around 60 psi and temperature at doc raise normal above 600° the fuel dosing starts and dpf temperatures inlet and outlet raise until 750- to … read moreMack 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.Example : SCR Outlet temp (587°C) 1090°F minus SCR Inlet Temp (398°C) 749°F = (116°C) ... (2.32 psi) and dropped to 5kPa (0.72 psi) during a full regen. 13. Is the DOC inlet pressure starting above the pressure specified below and stays high? 2 Symptom Diagnostics: Noisy 1- Box Aftertreatment 6 All information subject to change without notice.10. Perform a parked regeneration. 11. Once the parked regeneration is completed, review the DOC inlet pressure sensor reading in the log file. Does the DOC inlet pressure reading ever read zero during the parked regeneration?1. Yes; replace the DOC inlet pressure sensor. Refer to section "Removal of the Diesel Oxidation Catalyst Inlet Pressure ...In active DPF systems, HCs are introduced into the exhaust gas (via engine post-injection or exhaust injection) and oxidized over the DOC in order to increase the DPF inlet temperature. This functionality is typically combined with NO 2 generation for passive DPF regeneration.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 injector is spraying at 75 psiDid regen 3 times temps not going up…perform filter reset from texh tool and adaptive reset….after regen 3 times same issue still asking for regenEngine 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 ...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 ...Monitor temperature rise across DOC during regen. Little or no temperature rise indicates DOC not active. Monitor DOC inlet temperature. No temperature change after ... Pressure Sensor 85 Sensor Supply 86 Turbo Compressor In Temp 87 Intake Manifold Pressure Sensor 88 Sensor Ground 89 DOC Inlet Temp Sensor 90 Intake Air Throttle Valve …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 ...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.ASL: DOC Inlet Temperature ASL: DOC Outlet Temperature ASL: ASL: SCR Outlet Temperature ASL: SCR Inlet NOX Sensor After-treatment Outlet NOX ASL: Nox conversion AAS: Fuel Doser In'ection Status ASL: Exgas mass rate 'd Connections (paused} Device LMCM21J MCM21T MCM21T CPC04T MCM21T MCM21T MCM21T ACM21T ACM21T ACM21T ACM21T ACM21T MCM21T ACM21T 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.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. . I replaced the DOC inlet and outlet temp sensors along with the DDPF Temperature Sensor Module – A three-probe sensor w If regen is starting in the software (i mean it showing that regen is started and rpm goes up) and your doc inlet temp is not raising more than 380-480 then dosing will not start. Dosing starts after the doc inlet being heated up to 560+. This initial heating depends from turbocharger and intake throttle valve.The DPF thermal regeneration began at the experimental time of about 30 s, from which the target regeneration temperature and the DPF-inlet temperature started to increase gradually. As soon as the DPF-inlet temperature reached the target temperature of 575 °C, the throttle position was quickly reset and the engine dropped to idle. Soot load was level 5. performed a parked regen. DOC inlet tem 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. Diesel Oxidation Catalyst Temperature Drift - Inlet High or Outlet Lo...

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