Pre-Heating the Aftertreatment System with a Burner

Harris, Tony; Bellard, Raphael; Muhleck, Matthew; Palmer, Guenter

doi:10.4271/2022-01-0554

Cited by 9 publications

(5 citation statements)

References 5 publications

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“…As shown in Figure 9a, the DOC inlet temperature reached 250 °C at 100 s. The late start of the ammonia spray is a limitation. Two burner control strategies were proposed in [132], as shown in Figure 9b,c. The control strategy represented by the red line was preheating for 5 min after the engine turned on.…”

Section: Burnermentioning

confidence: 99%

“…McCarthy et al [133] utilized an identical two-tier control strategy for SCR. The SCR inlet temperature was Two burner control strategies were proposed in [132], as shown in Figure 9b,c. The control strategy represented by the red line was preheating for 5 min after the engine turned on.…”

Section: Burnermentioning

confidence: 99%

“…(3) Further control strategies for EHC [138,139], burners [132,133], and late post injection [168], based on the entire after-treatment system, are applied. (4) Materials are used with lower thermal conductivity and different insulation methods to approach adiabatic conditions [145,149] for better PCM development [156,157].…”

Section: Outlook For Future Technologiesmentioning

confidence: 99%

“…(a) Exhaust gas temperatures at various locations within an after-treatment system that includes an in-exhaust burner[131]. (b) DOC-in temperature during preheating and the cold-start FTP cycle[132]. (c) DPFout temperature during preheating and the cold-start FTP cycle[132].…”

mentioning

confidence: 99%

“…(b) DOC-in temperature during preheating and the cold-start FTP cycle[132]. (c) DPFout temperature during preheating and the cold-start FTP cycle[132].…”

mentioning

confidence: 99%

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A Review of Thermal Energy Management of Diesel Exhaust after-Treatment Systems Technology and Efficiency Enhancement Approaches

Wu,

Feng,

et al. 2024

Energies

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The DOC (diesel oxidation catalyst), DPF (diesel particulate filter), SCR (selective catalytic reduction), and ASC (ammonia slip catalyst) are widely used in diesel exhaust after-treatment systems. The thermal management of after-treatment systems using DOC, DPF, SCR, and ASC were investigated to improve the efficiency of these devices. This paper aims to identify the challenges of this topic and seek novel methods to control the temperature. Insulation methods and catalysts decrease the energy required for thermal management, which improves the efficiency of thermal management. Thermal insulation decreases the heat loss of the exhaust gas, which can reduce the after-treatment light-off time. The DOC light-off time was reduced by 75% under adiabatic conditions. A 400 W microwave can heat the DPF to the soot oxidation temperature of 873 K at a regeneration time of 150 s. An SCR burner can decrease NOx emissions by 93.5%. Electrically heated catalysts can decrease CO, HC, and NOx emissions by 80%, 80%, and 66%, respectively. Phase-change materials can control the SCR temperature with a two-thirds reduction in NOx emissions. Pt-Pd application in the catalyst can decrease the CO light-off temperature to 113 °C. Approaches of catalysts can enhance the efficiency of the after-treatment systems and reduce the energy consumption of thermal management.

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Section: Burnermentioning

confidence: 99%

Section: Burnermentioning

confidence: 99%

Section: Outlook For Future Technologiesmentioning

confidence: 99%

mentioning

confidence: 99%

“…(b) DOC-in temperature during preheating and the cold-start FTP cycle[132]. (c) DPFout temperature during preheating and the cold-start FTP cycle[132].…”

mentioning

confidence: 99%

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