Modeling of Diesel Particulate Filter Regeneration: Effect of Fuel-Borne Catalyst

Millet, Claire-Noelle; Ménégazzi, Pascal; Martin, B.; Colas, Hervé

doi:10.2516/ogst:2003010

Cited by 11 publications

(6 citation statements)

References 12 publications

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“…The permeability of the soot layer, ash layer, and substrate wall may change over a wide range with engine operating conditions. An extensive review of the published soot, ash, and substrate wall permeability ,,− is presented in Appendix S3 in the Supporting Information. As stated in Table , three sets of porous media permeability, representing low-, medium-, and high-flow restrictions, are used in the comparisons.…”

Section: Resultsmentioning

confidence: 99%

Performance of Asymmetric Particulate Filter with Soot and Ash Deposits: Analytical Solution and Its Application

Wang

Pan

et al. 2018

Ind. Eng. Chem. Res.

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With ever-tightening emission regulations, particulate filters are critical for internal combustion engines to meet the stringent particulate matter emission standards. A fast way to predict the filter performance, instead of numerically solving the governing differential equations, is needed for filter design and selection, real-time control, malfunction detection, and deposit load sensing. Approximate analytical solutions for wall flow filters, considering asymmetric channels and arbitrary deposit amounts, are derived by a technique of successive approximation. The analytical predictions of filter pressure drop have been validated against both steady state and transient experimental measurements. Moreover, over a broad range of filter operating conditions, the accuracy of the second-order analytical solution is validated by comparisons with the numerical predictions. The derivation also provides analytical expressions for channel and wall velocity profiles along the filter length. This study reveals the necessity of considering the nonlinear term of the governing equations when the actual open widths of inlet and outlet channels are quite different.

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Section: Resultsmentioning

confidence: 99%

Performance of Asymmetric Particulate Filter with Soot and Ash Deposits: Analytical Solution and Its Application

Wang

Pan

et al. 2018

Ind. Eng. Chem. Res.

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“…As known, with uncontrolled regeneration of a heavy loaded filter, very high temperatures (up to 1000°C) can occur, leading to the filter break up. Millet et al [16] observed such phenomena, suggesting that the cause of the strong increase of the temperature could be the faster oxidation of the stripped soot packed from the cake swept away toward the end of the filter.…”

Section: Figure 6 Tupdpf Tin Dpf and Tdowndpf Traces During The Regmentioning

confidence: 95%

Analysis of Particle Mass and Size Emissions from a Catalyzed Diesel Particulate Filter during Regeneration by Means of Actual Injection Strategies in Light Duty Engines

Iorio

Beatrice

Guido

et al. 2011

SAE Int. J. Engines

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The diesel particulate filters (DPF) are considered the most robust technologies for particle emission reduction both in terms of mass and number. On the other hand, the increase of the backpressure in the exhaust system due to the accumulation of the particles in the filter walls leads to an increase of the engine fuel consumption and engine power reduction. To limit the filter loading, and the backpressure, a periodical regeneration is needed.Because of the growing interest about particle emission both in terms of mass, number and size, it appears important to monitor the evolution of the particle mass and number concentrations and size distribution during the regeneration of the DPFs. For this matter, in the presented work the regeneration of a catalyzed filter was fully analyzed. Particular attention was dedicated to the dynamic evolution both of the thermodynamic parameters and particle emissions.The measurements were performed at the exhaust of a Euro 5 CR Diesel engine equipped with a Close Coupled DPF. The regeneration process was investigated in a point representative of an extraurban engine operating condition. The regeneration was managed by the electronic control unit (ECU). In particular, an injection calibration was implemented taking into account the engine and the filter features.The particle size distribution evolution during regeneration phase was measured in the size range 5-1000 nm using a differential mobility spectrometer. The particle mass concentration was monitored by means of a microsoot sensor.Particle mass and number concentrations strongly increase during the regeneration process. Moreover, a high concentration of the number of particles smaller than 30nm was observed in some critical phases of the regeneration process.

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“…PM is composed quired to clean the filter by burning or oxidizing the captured PM. To lower the PM regeneration tempera-primarily of carbonaceous soot, although it can also contain substantial fractions of heavy unburned ture, catalyst technology is applied via either coating [3,4] or fuel additive [5,6]. Several filter regeneration hydrocarbons and sulphuric acid and small amounts of ash from lubricant or fuel.…”

Section: Introductionmentioning

confidence: 99%

Infrared thermometry measurement of temperature distribution in the microwave regeneration of diesel particulate filters

Kong

Henrichsen

Shih³

2005

International Journal of Engine Research

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Infrared thermometry was applied to study the temperature distribution in microwave heating of diesel particulate filters. In situ non-contact temperature measurement tests were conducted using an integrated four-channel fibre-optic infrared temperature measurement and a microwave heating system. Silica light pipes, which are transparent to electromagnetic fields, were used to collect the infrared radiation from specified locations inside a filter during heating. The temporal and spatial temperature distributions in four microwave-heated diesel particulate filters with different soot and catalyst loading conditions were measured. Experimental results show the non-uniform heating inside filters. Catalyst coating, soot loading, and microwave power level all affect the heating rate and temperature distribution. Using 1 kW of microwave power, heating for 600 s can raise the temperature above 200°C in the soot-laden, catalysed filter.

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Modeling of Diesel Particulate Filter Regeneration: Effect of Fuel-Borne Catalyst

Cited by 11 publications

References 12 publications

Performance of Asymmetric Particulate Filter with Soot and Ash Deposits: Analytical Solution and Its Application

Performance of Asymmetric Particulate Filter with Soot and Ash Deposits: Analytical Solution and Its Application

Analysis of Particle Mass and Size Emissions from a Catalyzed Diesel Particulate Filter during Regeneration by Means of Actual Injection Strategies in Light Duty Engines

Infrared thermometry measurement of temperature distribution in the microwave regeneration of diesel particulate filters

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