Doc inlet temp during regen
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 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.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.
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Jan 18, 2020 · 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 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.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 ...Posts: 28. Joined: Jul 2016. 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 ...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.Good morning Roy, I replace the SCR Outlet Temp Sensor yesterday ran a regen and it went on forever, had to sop it after one hour. The Temps slowly build up, these are the readings after about 1 hour DOC inlet-747 DOC Oultet 1010 DPF Outlet 1092 SCR inlet 1028 SCR Outlet 1045 What do yuo recommend next Still showing same codes SCR NOX ...gmmerlin · #2 · Jun 23, 2007. NO, during the regen process, extra fuel is sent to the DOC (converter) which causes it to heat up. The hot exhaust gases from the DOC are sent to the DPF for the regen. So all the heat is going to be from the DOC back. There are EGT sensors pre and post DPF to monitor the temp.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. EGT stands for Exhaust Gas Temperature. The EGT sensor is responsible for reading the temperatures of the aftertreatment system components such as inlet DOC, ...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 usuallyCM871 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 …COOLANT 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. ...8. Use DiagnosticLink to start a low temperature regeneration. 9. Wait for 10 minutes, then monitor the Diesel Oxidation Catalyst (DOC) inlet temperature and DOC outlet temperature. Are the readings within 14°C (25°F) of each other? 9.a Yes; stop the low temp regen and Go to step 10. 9.b No; replace the DOC inlet temperature sensor.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 …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. Jul 28, 2016 · During the DESA NOX sensor test, mine never went above 275ppm inlet and 200 outlet at 1700 rpm. Remember the outlet should always be lower than the inlet due to the DEF being injected into the exhaust prior to the SCR catalyst and passes the outlet sensor on the way out the exhaust pipe. My DPF inlet temp will reach 1250, outlet temp 1200. 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. …Soot load was level 5. performed a parked regen. DOC inlet temp was bias. ... Mack MP8 regen issues. IROC Location Offline Posting Freak Reputation: 335. Thanks Given: 279 Thanks Received: 2910 (1046 Posts) Posts: 2,126 Threads: 155 Joined: Jul 2011 1 01-18-2020, 01:06 AM .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 compareMay 4, 2021 · Hey Nick, I got a 2014 KW T800 with a Oct 15, 2023 · CM871 High DOC temp during regen. Hi every 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. DOC inlet temperature; DPF inlet temperature; DPF o 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,Soot load was level 5. performed a parked regen. DOC inlet temp was bias. ... Mack MP8 regen issues. IROC Location Offline Posting Freak Reputation: 335. Thanks Given: 279 Thanks Received: 2901 (1040 Posts) Posts: 2,117 Threads: 155 Joined: Jul 2011 1 01-18-2020, 01:06 AM . Jun 19, 2016 · Fengjun Yan. Control of diesel
The results showed that engine-out NOₓ emissions were positively correlated with vehicle specific power (VSP). The average NOₓ reductions (deNOₓ) of the SCR were 82.8%, 91.7%, and 85.5% for ...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.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 ...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.Jan 11, 2020 · Typically, outlet temp should stay around 50F below inlet temp. 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.
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 ...Accumulated soot can be burned with the target temperature for c-DPF regeneration set in advance. The temperature of the exhaust gas is made to rise by the DOC-effected oxidation of the fuel injected into the exhaust pipe at the position of the inlet of the DOC. Regeneration started at the beginning of the JE05 test cycle, and it proceeded for ...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 ……
Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Soot load was level 5. performed a parked regen. Possible cause: DOC is likely fuckered, you can never really visually see if a doc is f.
To create the thermal conditions necessary for soot regeneration in the CSF, fuel was injected into the exhaust pipe up-stream of the DOC (Fig.2). In this study the conditions for fuel injection were fixed to 25ml/min, 300°C inlet temperature and 49,000/hr space velocity for the DOC to generate a CSF inlet temperature of 600C.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 temperatureDPF inlet temperature: 550°C; Soot load: 4.1 g/dm3. It should be noted that there was almost no NO2 generation over the DOC during active regeneration. This ...
Jan 18, 2020 · 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. Soot load was level 5. performed a parked regen. DOC inlet temp was bias. ... Mack MP8 regen issues. IROC Location Offline Posting Freak Reputation: 335. Thanks Given: 279 Thanks Received: 2901 (1040 Posts) Posts: 2,117 Threads: 155 Joined: Jul 2011 1 01-18-2020, 01:06 AM .Soot load was level 5. performed a parked regen. DOC inlet temp was bias. ... Mack MP8 regen issues. IROC Location Offline Posting Freak Reputation: 335. Thanks Given: 279 Thanks Received: 2901 (1040 Posts) Posts: 2,117 Threads: 155 Joined: Jul 2011 1 01-18-2020, 01:06 AM .
Symptoms: DOC Inlet temp 316C (600F) – temp steady and above mi 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.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 ... I have a 2017 Mack/CHU. With an engine light on. The codes that comeRegen Temperature- Out Of Range Low Table 1. 13. Inspect the DOC inlet pressure sensor electrical connector for corrosion and spread pins. a. If corrosion or damaged (or bent) pins are found, repair as necessary. Verify repairs. b. If no corrosion or damage is found, replace the DOC inlet pressure sensor. Refer to section "Removal of the GHG14 Diesel Oxidation Catalyst Inlet Temperature ...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 to During parked regeneration the exhaust gases will be extremely 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 …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. Perform the low temperature ATD regen; Refer to section "EFigure #2: Good Regen Item 1: Notice the temps rise much quicker tIt's still in regen mode, but the current s 22. Review the last seven minutes of the parked regeneration log file; was the SCR inlet temperature more than 38°C (68.4°F) lower than SCR outlet temperature? a. Yes; Go to step 23. b. No; replace the ATD. For a One-box system, replace the DOC/SCR module. For a Two-box system, replace the SCR module. The stage1 is before regeneration phase. Th 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 Apr 15, 2018 · 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°. AlanJ Discussion starter · Mar 10, 2020. While trying to g[Start the engine and run a Parked Regen. Monitor Diesel OTypically, outlet temp should stay around 50F 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