Active DPF Regeneration for 2007 Diesel Engines

Kong, Yougen; Kozakiewicz, Tom; Johnson, Randy; Huffmeyer, Chris; Huckaby, Jon; Abel, John F.; Baurley, Jon; Duffield, Kendall

doi:10.4271/2005-01-3509

Cited by 29 publications

(7 citation statements)

References 3 publications

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“…NO is oxidized to NO 2 by PGM catalysts (platinum group metals) present in the DPF. The “NO to NO 2 ” turnover ratio could be in the range of 1.5–3.0 depending on PGM loading of the washcoat and aging characteristics during vehicle operation. ,,,,, Depending on DPF calibration, the filter may be subjected to active regeneration where fuel hydrocarbons are sprayed in the exhaust stream that light-off and burn trapped soot in the DPF. ,− Higher number of active regenerations per unit time of operation increases the fuel consumption of the vehicle. It would be beneficial from a fuel economy standpoint if the soot trapped in the DPF is susceptible to oxidation and can be easily burnt at lower exhaust gas temperatures.…”

Section: Introductionmentioning

confidence: 99%

Effects of Diesel Soot Composition and Accumulated Vehicle Mileage on Soot Oxidation Characteristics

et al. 2016

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Effects of diesel soot composition and accumulated vehicle mileage on soot oxidation characteristics were examined. Four soot samples were extracted from the crankcase oils of diesel engines that had accumulated different mileages. Carbon black was used as a comparative example. Soot structure was studied in situ using X-ray diffraction as it was oxidized to temperatures as high as 700 °C. The soot from older engines exhibited a higher increase in lattice spacing (d 002) with an increase in temperature that resulted in soot samples being at lower temperatures, thereby reducing the oxidation resistance. Composition of the residues after oxidation was studied using X-ray diffraction, energy-dispersive spectroscopy, and X-ray absorption near-edge structure. Oxidation residue of the soot samples is made up of decomposed lubricant additives compounds and debris from wear and tribofilms. XRD phase analysis showed that crystalline compounds in soot are CaSO4, CaZn2(PO4)2, Ca3(PO4)2, Zn3(PO4)2, and ZnO. The turbostratic structure of all the soots irrespective of engine age is similar prior to oxidation; however, the embedded crystalline and amorphous species in the soot change with accumulated mileage. Surface area of the soot measured using BET was found to be inversely proportional to the weight of residue.

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Section: Introductionmentioning

confidence: 99%

Effects of Diesel Soot Composition and Accumulated Vehicle Mileage on Soot Oxidation Characteristics

et al. 2016

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“…Currently, engine oil suffers several adverse effects due to emission control strategies (1)(2)(3)(4)(5)(6) and Diesel Particulate Filter (DPF) regeneration processes (7)(8)(9)(10). In fact, new standards and regulations that define the amount of pollution that engines can exhaust into the atmosphere are more and more restrictive each year and the limits are lower (11)(12)(13).…”

Section: Introductionmentioning

confidence: 99%

An Alternative Procedure to Quantify Soot in Engine Oil by Ultraviolet-Visible Spectroscopy

Macián

Tormos

Ruíz

et al. 2019

Tribology Transactions

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Internal combustion engines (ICE), as a consequence of new pollutant emissions standards, need several emission control strategies (and related procedures) such as Exhaust Gases Recirculation (EGR), Diesel/Gasoline Particulate Filter (DPF/GPF), Selective Catalyst Reduction (SCR) that allow them to comply with complete requirements defined on those standards. These strategies provoke faster degradation of the engine oil and one of the most relevant consequences is an increase in soot contamination level. All of these strategies facilitate the soot generation.Consequently, soot is one of the most important contaminants present in the engine oil and its relevance is still increasing. The main and classic technique to measure the content of soot in oil is Thermogravimetric analysis (TGA), but this technique has certain limitations. TGA needs a long specific procedure and has limitations to measure small concentration of soot in oil. Therefore, the design of an alternative technique to quantifying the soot in oil concentration is acquiring relevance. One alternative can be the Fourier-transform infra-red (FTIR) spectroscopy, but it also has limitations related to small concentrations of soot in oil. This work presents an alternative technique based on the Ultraviolet-Visible (UV-Vis) spectroscopy, which will let us to quantify 2 small soot contents in used engine oil samples and avoiding potential interferences from other typical contaminants or related with the own measurement process such as sample cuvette material.

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“…This temperature was beyond the limits and would affect its integrity. The conclusion of this study showed that the TR system could meet the criteria set forth by the EPA for 2007 regulations [1].…”

Section: Active Dpf Regeneration and The Effects Of Internal Temperatmentioning

confidence: 75%

“…Diesel particulate filters (DPFs) are a viable PM after treatment technology that are capable of meeting the current regulations and standards set forth by the Environmental Protection Agency (EPA) and California Air Resources Board (CARB) [1]. DPFs are adaptable to various engine applications once the control strategies are developed.…”

Section: Nomenclaturementioning

confidence: 99%

Recommended Regeneration Strategies for Active Diesel Particulate Filters with Electrically Induced Filtering Media to Enhance Filtration Efficiency

Perry¹

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The people of the world have become conscious of the effects human beings are having on the earth. This awareness has spawned a willingness to regulate the amount of pollution from fossil fuel combustion that human beings place on the environment. In the United States, the Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) determine and regulate the emissions standards of on-and-off road engines through emissions

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Active DPF Regeneration for 2007 Diesel Engines

Cited by 29 publications

References 3 publications

Effects of Diesel Soot Composition and Accumulated Vehicle Mileage on Soot Oxidation Characteristics

Effects of Diesel Soot Composition and Accumulated Vehicle Mileage on Soot Oxidation Characteristics

An Alternative Procedure to Quantify Soot in Engine Oil by Ultraviolet-Visible Spectroscopy

Recommended Regeneration Strategies for Active Diesel Particulate Filters with Electrically Induced Filtering Media to Enhance Filtration Efficiency

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