Doc inlet temp during regen.

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.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 …DOC inlet temperature; DPF inlet temperature; DPF outlet temperature; The MAXIMUM difference between the sensor readings should be 24 o C (43 o F). If the difference exceeds 24 o C (43 o F), replace the temperature sensor module assembly (the 3 temperature sensors are connected on the same CAN-BUS module and cannot be replaced separately, or …

(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 …2018年9月18日 ... 3251 21 DOC Inlet / Outlet Pressure Not Plausible Without the ... i think most posts I have read regarding regen said you need to start at ...

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 …

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 compareAfter 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.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. Diesel Oxidation Catalyst: The DOC assists in elevating temperatures into the DPF to initiate the regeneration process. Fuel is injected into the exhaust by the Hydrocarbon (HC) fuel dosing system. The injected fuel is oxidized in the DOC, which raises the temperatures above passive mode operating temperatures.During active regeneration, the temperature of the exhaust gas must reach a certain level to burn off the particulate matter that has accumulated in the DPF. This temperature is typically around 600 to 700 degrees Celsius, or 1100 to 1300 Fahrenheit, which is much higher than the normal operating temperature of the engine. ...

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.

Apr 7, 2013 · 19 2 Jun 8, 2012 Santa Rosa, CA 0 Can anyone tell me where the temps should be at on an active regen? I keep getting code 1691 DOC below normal operating temp . I cleared code and did regen DOC maxed out at 561F I, inlet 1000+ and outlet 1000+. Is 561F on the DOC inlet right or should it be hotter? Im thinking my doser might be bad. Thanks

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 ...You can tell by watching your temperatures during a regen. If your DPF intake is lower then your DPF outlet, and theyre both above 800F, it's called 'inverted temps'which indicate your DOC ...more ...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 ...High DOC outlet temperature for DPF regeneration during the FTP cycle CAT 3126 engine. As seen in the chart, maintaining constant DOC outlet temperature at variable exhaust gas mass flow rate and variable DOC inlet temperature conditions is not a trivial task.Monitor temperature rise across DOC during regen. Little or no temperature ... 4 SPN 3242/FMI 2 This diagnostic condition is typically DOC Inlet Temperature ...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 None

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 ... 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. 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.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, …Start the engine and run a Parked Regen. Monitor Diesel Oxidation Catalyst (DOC) inlet pressure and engine speed during the regen. NOTICE: If DOC inlet pressure is 19.9 kPa (2.9 ... (1090°F) minus SCR Inlet Temp 398°C (749°F) = 116°C (241°F). The difference between inlet and outlet temperature is 116°C (241°F), which is greater than 20.2 ...Just an FYI there will be no HC dosing for the first 12 ish minutes of the regen. The doc inlet temp will raise around that 700-800 degrees mark in that first 12 min to burn Soot …

No; 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 ... 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°.

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 ...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 ...Oct 27, 2017 · 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 ... 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. 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.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 ...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. Apr 10, 2018 · 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.

This guide will assist with diagnosing regen related codes and issues for GHG14 DD Engines. Engine Speed 1100 rpm (1275 rpm during first 12 minutes of regen …

High DOC outlet temperature for DPF regeneration during the FTP cycle CAT 3126 engine. As seen in the chart, maintaining constant DOC outlet temperature at variable exhaust gas mass flow rate and variable DOC inlet temperature conditions is not a trivial task.

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. 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.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 ...An icon is displayed on the InfoCenter; however, no action is required by the operator, and the machine may be operated as normal during this cycle. 3. Reset regeneration uses a combination of the intake throttle and post fuel injection to further raise the exhaust temperature to burn off the particulate matter. The High Exhaust Gas Temperature ...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. Monitor temperature rise across DOC during regen. Little<br /> or no temperature rise indicates DOC not active.<br /> Monitor DOC inlet temperature. No temperature change<br /> after engine startup indicates sensor problem.<br /> Listen for the ITV to sweep at key up.<br /> Turbo not functioning properly Perform a turbo …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 ...temperature from inlet temperature to outlet temp erature. The THC from post injection is assumed to be completely combusted inside the DOC (Chen, P . et al. (2014)).Verification Parked Regen 1. Disconnect the DPF outlet pressure sensor tube. 2. ... During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if ... (DOC) Inlet Pressure - Not Plausible. Table 2. SPN 3251/FMI 20 Description DOC Inlet Pressure Sensor ...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 …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..Face plugging is an extreme buildup of carbon on the inlet side of your DOC (Diesel Oxidation Catalyst). This extreme buildup causes additional exhaust backpressure and restricts exhaust flow, which hinders the performance of the DPF and SCR downstream. While the face plugging can be caused by a few different mechanical problems, the most ...

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 ...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.Decided the doc inlet temp sensor should be replaced and the DOC/DPF be sent out for cleaning. They didn't look to bad after I took them out the the cleaning test said they needed to be cleaned. Reassembled everything and did another parked regen. DPF outlet temp stayed about 50F above inlet temp during the entire regen.Instagram:https://instagram. why study humanitiescampus map kucraigslist long island kittens1 john 4 nasb 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 … las preposiciones in englishconducting the study 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 ... elanna 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. 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.