Doc inlet temp during regen

The Aftertreatment System Technician's Guide … NUMBER:08 AT

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 ...The calibration results of (a) DPF outlet temperature and (b) DPF pressure drop during active regeneration. DPF regeneration conditions: DPF SV = 20,000 h-1 , DPF soot loading = 4 g/L, DPF inlet ...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. Refer to section "Removal of the Diesel Oxidation Catalyst Inlet

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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 NOTE: Normal DOC pressure is less than 10 kPa (1.5 psi) for a 1-Box™ emissions package and 13 kPa (1.9 psi) for a Two-Box option. 38. Using DiagnosticLink, monitor DOC inlet pressure while performing a parked regeneration. Refer to section "Performing a Parked Regeneration Using DiagnosticLink® Standard". Does the DOC inlet pressure start ...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).Got a 2018 Mack MRU with an MP7. Truck has had regen issues since we got it new, been to the dealership multiple times but Mack says they can’t duplicate the issues. Active codes as of right now. P103C00 P20EE00 P046C64 P24F700. Truck is in derate requesting a Sulfur regen. During the regen the Nox inlet is at 1026 PPM and outlet is 1773 PPM.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 …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 .Results show that at high DOC inlet temperatures (>190 °C), the DMDF mode combined with DOC achieves the high DPF inlet temperatures and the high NO 2 /PM ratio, which is benefit for passive regeneration. During active regeneration, the initial regeneration temperature, the fuel penalty and the emissions of PM, particulate number (PN), NO 2 ...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. ...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 ... 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).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 …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. During regen the temp doesn't get over 305. I thought it had to hit over 500 to kick on injector 7. ... We removed the DPF and DOC and got them baked and blew out. ... Constant regens. Two obd codes. Inlet trap pressure and particulate trap 1 ...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).Soot load was level 5. performed a parked regen. DOC inlet temp was bias. ... Mack MP8 regen issues. IROC Location Offline Posting Freak Reputation: 332. Thanks Given: 279 Thanks Received: 2890 (1034 Posts) Posts: 2,107 Threads: 155 Joined: Jul 2011 1 01-18-2020, 01:06 AM .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 injection volume of 1 μL. The column was a DB-WAX-etr polar column (30.0 m×0.53 mm×1.00 μm).The temperature was kept constant as was the pressure at 4.40 psi.The furnace temperature heating program included: first held ...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.8 10-28-2017, 06:39 AM. Your permanent code 155:4 should be an EGRDP sensor low fault according to what I'm looking at. I've seen 2631 and severe derates also due to failed/biased EGRDP sensors/wiring and more commonly plugged EGRDP ports/tubes. Drag test the EGRDP sensor connector pins and make sure they arn't spread.Joined: Nov 2011. 6 10-28-2020, 10:36 PM. i have a volvo 2015 d13 wASL: DOC Inlet Temperature ASL: DOC Outlet Te Exhaust Gas Temperature 1 – DOC Inlet (℉) 07E02281F9; C462058136F9; 4010; 000900050020; EG1; 4.22 Required; Usage Notes. If this XGauge reads 32 °F try changing the RXD and MTH to the following: ... Time since Active Regen (Hours) DEF Level (%) DEF Temperature (°F) DEF Quality (%) DEF Dosing Rate (gph) Aftertreatment Intake NOx (ppm) 7. Start the engine and run a Parked Regen. Monitor DOC inlet Save. ClickClick5 · #9 · Aug 7, 2015. EGT3 is the one you will want to watch for the regen. This is the post DPF temp probe. EGT2 is post DOC, and EGT1 is pre DOC. Normal driving, EGT3 will reach around 500-800F. You will know … During regen the temp doesn't get over 305

DPF Alternatives NWA 11462 Digby Dr Gentry, AR 72734 Phone: (479) 334-00792023年8月11日 ... As a whole, the DOC inlet temperature in most working conditions is between 450 °C and 500 °C, which satisfies the set target value. In region 1 ...I have a Detroit dd13 that when I put it through a Regen, the temp spikes to over 1500 degrees and sets a code 3246/0. It also has EGR slow response code 3058/9. The temps would climb normally until the system got to about 700 degrees and that's the when dpf outlet temps would just speed past the dog inlet temps.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.Mar 15, 2017 · DPF regeneration temperature rising strategy chiefly considers two temperatures including DOC inlet temperature and the DPF inlet temperature. Temperature rising approaches is based on Great Wall 4D83 diesel engine whose performance parameters are listed in Table 1 and DPF experiment system is shown in Fig. 8. Secondary post injection (Post ...

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 ... 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 ...2015年2月2日 ... 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 ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Once the DOC is heated up, it can produc. Possible cause: The forced regen still shows the DOC temp close to the DPF intake temp and the D.

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.02/02/2018 - Added temp differential test in step 2 01/03/2018 - Due to Cummins software changes, removed ROA test (previously step 2) DESCRIPTION This document will guide the user through resolving frequent regen issues on vehicles equipped with an ISB 6.7. SYMPTOM(s) Diagnostic Trouble Code(s) & Dashboard Indicator …2023年8月11日 ... As a whole, the DOC inlet temperature in most working conditions is between 450 °C and 500 °C, which satisfies the set target value. In region 1 ...

The peak temperature of type II regeneration was above 1100°C, as shown in the type B curve. From the rising trend of the curve in the figure, it could be seen that the sudden rise of regeneration temperature would have a large thermal impact on DPF, which could be observed even when the inlet regeneration temperature was normal.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.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.

Here's the "normal" values for all of the Aftertrea I have a Detroit dd13 that when I put it through a Regen, the temp spikes to over 1500 degrees and sets a code 3246/0. It also has EGR slow response code 3058/9. The temps would climb normally until the system got to about 700 degrees and that's the when dpf outlet temps would just speed past the dog inlet temps. Exhaust Gas Temperature 1 – DOC Inlet (DegreSymptoms of a clogged DPF filter are excessive regens and 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 ...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. Throttle Valve Actual NOT USED DURING A PAR 7. 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 below to identify a possible cause of the fault code. a. If the DOC inlet pressure starts out high above 10 kPa (1.45 psi) and decreases during the parked regen, this 2018年9月18日 ... 3251 21 DOC Inlet / Outlet PressurHow to Reduce DPF Regens. Stiction is theASL: DOC Inlet Temperature ASL: DOC Outl 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 ... Also, is the DOC and DPF due for cleanin 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 ... 2022年2月16日 ... An engine oil consumption problem will be hard on a DPF. As Otto explained, the additives in engine oil cannot be oxidized away during a regen, ... Soot load was level 5. performed a parked reg[Jan 18, 2020 · Mack MP8 regen issues. 2012 CXU613 wi- Observe exhaust gas temperatures from DOC Outlet Temp, DOC 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. Will the intake manifold …