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Method to Improve DPF Regeneration Performance for Challenging Driving Profiles
Technical Paper
2022-28-0326
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Major share of Small Commercial Vehicles (SCV) applications is operated in city conditions with frequent stops and short driving distance. Drivers will often operate these SCV with loads that exceed their rated specifications. Such driving profiles are particularly observed in food, e-commerce delivery, garbage collection vehicles which are driven inside the city. During Diesel Particulate Filter (DPF) regeneration events in these conditions, it is a challenge to maintain light-off temperature of oxidation catalyst. This may lead to prolonged regeneration durations with multiple regeneration interrupts and poor regeneration efficiency. Frequent engine start operations and lower passive regeneration result in a low regeneration interval. The extended DPF regeneration duration in combination with a low regeneration interval will result in high oil dilution.
The study focuses on identifying such driving profiles and defining counter measures to improve the regeneration performance. This involves applying an ECO mode to optimize the soot rate only during challenging driving conditions and escalation-based algorithms that use auxiliary loads to increase exhaust temperatures and thus improve regeneration efficiency. These measures help to improve regeneration performance with lower fuel consumption and reduced oil dilution.
Authors
Citation
Chaudhari, K., Arale, S., Aravind, A., Madhukar, P. et al., "Method to Improve DPF Regeneration Performance for Challenging Driving Profiles," SAE Technical Paper 2022-28-0326, 2022, https://doi.org/10.4271/2022-28-0326.Also In
References
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- Shankar , R. , Manoharamurugesan , R. , Krishnan , N. , and Chandrasekaran , V. Challenges in Performing DPF Regeneration in Indian Driving Conditions for Meeting BS6 Emission SAE Technical Paper 2021-26-0194 2021 https://doi.org/10.4271/2021-26-0194
- Yezerets , A. , Currier , N. , and Eadler , H. Experimental Determination of the Kinetics of Diesel Soot Oxidation by O2- Modeling Consequences SAE Technical Paper 2003-01-0833 2003 https://doi.org/10.4271/2003-01-0833