Doc inlet temp during regen

Oct 17, 2020 · Regen started. DOC inlet go to 750 and both others are around 750 as well. But diagnostic link never shows that regen goes into regeneration state it always shows engine in thermal management.that is why 7th injector never opens. If i manually open 7th injector,it opens and temp rise as well. But it never opens during regen, no other codes

Thank you for input again, however, i forgot to mention at the very beginning that turbo speed at 58,000 - 60,000 rpm which mean in the boost rate, but DOC and DPF at 350, 400 and 430 degree after 30 minute of regen, but after i detect CAC leak on both side, i replaced CAC and turbo speed back to normal around 42,000-43,000 rpm.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 ... 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.DOC and DPF, causing soot particles to be reduced. Intake Throttle Valve (ITV) The Intake Throttle Valve (ITV) is installed on the air intake between the air filter housing and the Exhaust Gas Recirculation (EGR) mixer. The ITV is used to control the air/fuel mixture during a Regen process of the Aftertreatment system. The ITV is2015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 ...Thank you for input again, however, i forgot to mention at the very beginning that turbo speed at 58,000 - 60,000 rpm which mean in the boost rate, but DOC and DPF at 350, 400 and 430 degree after 30 minute of regen, but after i detect CAC leak on both side, i replaced CAC and turbo speed back to normal around 42,000-43,000 rpm.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 …

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.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.Aug 23, 2011 · 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 in the DPF. An increased pressure drop was also recorded across the DOC during active regeneration (ΔP C), which could be attributed to fouling of the catalyst inlet face by soot and/or coke species. No increased DOC pressure drop was seen during filter loading. Figure 16. Pressure drop and temperature during active regeneration (600°C) 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 ...Now this truck is back and will not regen. The truck is in a fail safe mode for soot. Initially it was setting a SPN 3351 FMI 7 for the engine exhaust back pressure valve and the DOC/DPF were not getting hot. I adjusted the valve and the DOC inlet hit 500 and outlet hit over 600, DPF outlet was able to get over 500. The truck is not dosing fuel ...

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 9. Monitor DOC inlet and outlet temperatures. Are the temperatures within 25°C (45°F) of each other? 9.a Yes; Check valve lash and engine brake rocker lash. If either is out of adjustment, readjust the lash, perform a parked regeneration, and continue with the initial diagnostics that directed you to DOC inlet temperature will not(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).The regen temps, at least to me, look good for a 2007 emission engine. How does the dpf diff. psi look during the regen? Was the 7th inj. cleaned and if so did you …

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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 CleaningThrottle 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 toExhaust 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..- 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 Sensor

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. ...Diesel Oxidation Catalyst Temperature Drift - Inlet High or Outlet Low Table 1. SPN 3242/FMI 20 Description 70°C (126°F) Difference During Non-regeneration Mode Monitored Parameter Diesel Oxidation Catalyst (DOC) Inlet Temperature vs. DOC Outlet Temperature Typical Enabling Conditions Coolant Temperature Greater than 60°C (140°F); Regen not ...OUT 1112 DPF OUT 1121 TROTTLE AT 76 DOC INLET PRESSURE .95 DPF OUT PRESS .30 FUEL DOSER 16.8 SRC INLET TEMP 1015 SRC OUT TEMP 994 THIS WITH DEF HOOKED UP CONVERSION ... Also, if its showing vehicle speed at any point during the regen(I have seen this before even though it was parked), it will kick it out or …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. ...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.a Diesel Oxidation Catalyst (DOC). Together, those products are effective at removing 99 percent of PM soot from the exhaust system using wall-flow substrates. As soot accumulates in the filter, a regeneration event will provide sufficient heat to oxidize the captured soot. The remaining ash is removed during regularly scheduled cleaningThrottle Valve Actual NOT USED DURING A PARKED REGEN Fuel Comp Pressure 85 - 92 psi ... 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... DOC-boosted temp of 1100 deg. , we would have ... There WAS distinct mention of a "post" injection, which operated only during active regen,...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 ...

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.

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.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.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 ...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.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, …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 …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.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 Cleaning

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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 ...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 …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 ... mixture during a Regen process of the Aftertreatment system. The ITV is common for all medium duty MaxxForce engines. Exhaust Gas Temperature (EGT). Sensor.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.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.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 ...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 ... ….

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.120–pin MCM connector and the Turbo Compressor Inlet, DOC Inlet, DOC Outlet, and DPF Outlet temp sensors. Verify repairs. [b] If no voltage is present on pin 1 of the intake air sensor, repair the open between pin 88 of ... during normal service. A stationary regen is required if the fault code is active. No action is required for an inactive ...During vehicle operation, active regeneration is performed when the accumulated soot and ash reach boundary limits. In this operation, the particulate soot is ...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.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).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.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 ...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°.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°. Doc inlet temp during regen, [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1]