Doc inlet temp during regen
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 ...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 pressure sensor not allowe the regen to get the DOC inlet up to the proper 520 degrees in order to fully perform the regen ...
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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.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 …The step response of DOC- out temperature can be acquired by injecting constant amount (i.e. 50 mg/s) of Diesel fuel into the exhaust pipe upstream of the DOC during different steady states (i.e. constant inlet temperature and mass flow rate of exhaust gas).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.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 ...Solved Re HC DOSER WILL NOT ACTIVATE DURING REGEN - Page 2 - DTNA Solutions. Reply Description ARS: Engine Turbo speed 1 AAS: Fuel Cut Off Valve ASL: Torque …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. 28. Using DiagnosticLink, monitor DOC inlet pressure while performing a parked regeneration. Refer to section "Performing a Parked Regeneration - GHG17". Does the DOC inlet pressure start out high and stay high? a.The Doc Inlet pressure is 0.4 Outlet Doc pressure half of that (around 0.2). Then I cleaned the DPF filters (2 dpf filters are new from last year) and cleaned the One box, installed them back (the place that cleaned it said it didn't looked bad at all), installed new inlet Nox sensor, new inlet Doc pressure sensor and hose (the hose was clogged), new …Engine in smoke control mode. Monitor smoke control status during regen. Smoke control status should be 0. DOC Inlet Temperature Sensor non-responsive. Monitor ...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.Monitor temperature rise across DOC during regen. Little or no temperature ... 4 SPN 3242/FMI 2 This diagnostic condition is typically DOC Inlet Temperature ...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 ...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 ...If the system doesn't reach this then something is wrong with engine, not the DOC or injector. If the temps reach 525 or better and the inlet temp to the DPF stalls around 800 or is very very slow to reach 1000+ then something is wrong with the injector or DOC. Monitor these parameters during a regen, and you should have these values;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 ...The addition of engine exhaust to intake air increases the over- all heat capacity of the charge, leading to a reduction of peak combustion temperature. Since ...Mar 18, 2018 · 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.
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 ... 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.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 …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 ...
Aftertreatment inlet and aftertreatment Diesel Oxidation Catalyst. (DOC). 2 ... aftertreatment DOC. The oxidation of this additional fuel creates the heat ...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, ……
Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. 2021年1月30日 ... My unit starts the regen but the DOC inlet temp i. Possible cause: Tractor was towed in with engine warnings on, and in shutdown mode.Active faults .
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 ...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 air valve opens, and the truck exhaust gets seriously hotter.
- 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 SensorThe 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 ...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
DPF temp should be in the 1000-1100F range. If DPF temp reac 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.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). ASL: DOC Inlet Temperature ASL: DOC Outlet TemDuring active regeneration, the temperature - Observe exhaust gas temperatures from DOC Outlet Temp, DOC Inlet Temp and DPF Outlet Temp. - Refer to Aftertreatment Diagnostic Manual Supplement for information regarding OBFCT. 4. If OBFCT runs successfully, go to Step 7. 5. If OBFCT aborts, replay OBFCT using Service Maxx and observe Aftertreatment temperatures and diagnostic trouble codes. Mack MP8 regen issues. 2012 CXU613 with 2012 How to spot a failed DOC.You can tell by watching your temperatures during a regen. If your DPF intake is lower then your DPF outlet, and theyre both above 8... The inlet temperature was 200°C and the detector tThe forced regen still shows the DOC temp close to the DPF intakeWhat are the temps showing when you are running the rege Ask the driver if a parked REGEN was attempted and what was the result? 4. ... If black smoke is not seen during Step 2, proceed to Step 3. 3. Perform Onboard Filter Cleanliness Test (OBFCT) ... the test is running and can be replayed later for review. - Observe exhaust gas temperatures from DOC Outlet Temp, DOC Inlet Temp and DPF Outlet Temp. The catalyst should also exhibit low light-o 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.6. Stay relaxed in a pair of jeans and a windbreaker. Grab your favorite pair of jeans, which will keep your outfit comfortably casual. Slide on a breathable top, along with a windbreaker. Pick out a colorful windbreaker for a more dynamic look, or play around with neutral tones if you'd prefer to be subtle. Mack MP8 regen issues. 2012 CXU613 with 2012 fault cod[What temp should doc inlet be during regen? Engine During regen the temp doesn't get over 305. I thought it had to hit ov (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 …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.