Most Selective Catalytic Reduction (SCR) systems to remove NO x from diesel exhaust use urea solutions to provide ammonia, which is the reductant. The use of urea solutions avoids issues with the storage of liquid ammonia on-board the vehicle, but has some drawbacks, including freezing/thawing, urea decomposition in the tank, limited dosing capability in exhaust. 4364–2 (E1410 (2)) Aftertreatment #1 SCR Catalyst Conversion Efficiency : Erratic, Intermittent, or Incorrect The current troubleshooting procedure does not always resolve the issue satisfactorily. Caterpillar is investigating the root cause of these issues. ... Refer to Systems Operation, Testing and Adjusting, Aftertreatment SCR System Dosing - Test. Take photographs.
Selective Catalytic Reduction (SCR) systems, providing our customers with a proven solution. Achieves Passive Operation And High NOx Conversion. Cummins Emission Solutions understands how to balance engine and aftertreatment to deliver optimal system performance while meeting the regulatory levels of system-out oxides of nitrogen (NOx) and.
overall aftertreatment temperatures • DOC-SCR-F-SCR system has been evaluated for FTP-75 NOx conversion performance •Aftertreatment system was capable of ~94% NOx conversion efficiency on 2.1g/mi engine •>80% of tail pipe NOx is released during bag 1 •Addition of PNA is expected to increase cycle NOx conversion efficiency to 96%.
Figure 11. 2. SCR Switchback Assembly. Exhaust Jumper Harness Decomposition Reactor Tube. 3. Selective Catalyst Reduction (SCR) assembly. 4. Diesel Particular Filter (DPF) assembly. 10. 1SCR. That increases the gas temperature, and that higher temperature gas enters the DPF and helps to burn off soot.". Aftertreatment systems have led to a significant reduction in the emissions pouring from the engine. However, they've acquired a reputation as a thorn in fleets' sides thanks to significant maintenance costs.
Aftertreatment 1 SCR Conversion Efficiency - Condition Exists 1 Fault Code 5655 requires that ALL solutions be performed 2 Check for primary fault codes 3 Aftertreatment diesel exhaust fluid is contaminated 4 Aftertreatment exhaust system leaks 5 Charge air cooler or exhaust system leak 6 Leaks in the aftertreatment diesel exhaust fluid dosing system
RE: 2015 international prostar scr issues. just found this post. Must have gotten lost in the noise. According to the likely out of date print-out I have on SPN codes, the ... SPN: 4364 FMI:18 -- should be cummins fault code 3582. Fault code 3582 = Aftertreatment SCR Catalyst Conversion Efficiency - Data Valid But Below Normal Operating Range ...
The 2010 Paccar PX-6 and Paccar PX-8 engines are both available for the Kenworth T270 Class 6 and T370 Class 7 models Information - Aftertreatment SCR Operator Inducement - Data Valid But Above Normal Operating Range - Most Severe Level View All Senders and Sensors •  - DEF Doser Nozzle - Clean annually by running aDAVIE4 forced. 2003-2007 EGR Only Exhaust Gas
“The Effects of Sulfur Poisoning and Desulfation Temperature on the NOx Conversion of LNT+SCR Systems for Diesel Applications,” SAE Int. J. Fuels Lubr. 3 1 1 15 2010 10.4271/2010-01-0300 McCarthy, J. Holtgreven, J. “Advanced NOx Aftertreatment System Performance Following 150 LNT Desulfation Events,” SAE Technical Paper 2008-01-1541 2008
what does scr nox conversionefficiency low mean on, zibbix nox nitrogen oxide sensor outlet for 6 7l 10 12, nox sensor diagnostic for an exhaust aftertreatment ... added durability performance match and increased efficiency DD13 Aftertreatment Problems MHH AUTO April 21st, 2019 - I would check Nox Sensor They can be bad and giving active ...