Regeneration Strategies for an Enhanced Thermal Management of Oxide Diesel Particulate Filters

Boger, Thorsten; Rose, Dominik; Tilgner, Ingo-C.; Heibel, Achim

doi:10.4271/2008-01-0328

Cited by 51 publications

(25 citation statements)

References 8 publications

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“…However, beyond a duration of 20-30 s, the maximum temperature levels off to about ∼80 K above the initial temperature. The weighing of the samples showed residual soot in the filter, and the plateau is not explained by depletion in soot but rather that the rate of heat release becomes balanced by the convective heat removal with the exhaust gas flow, as also shown for DPF in [13].…”

Section: Laboratory Reactor Experiments Simulating Fuel Cutsmentioning

confidence: 55%

“…The management of the soot accumulated within a particulate filter during operation has been subject to significant development work in the case of diesel engines, i.e., [13]. Key steps in the soot management are (a) the monitoring of the mass of soot accumulated and (b) the control of the mass of soot within defined limits.…”

Section: Introductionmentioning

confidence: 99%

“…Key steps in the soot management are (a) the monitoring of the mass of soot accumulated and (b) the control of the mass of soot within defined limits. The latter is essential to avoid excessive buildup of pressure drop or the risk of runaway soot oxidation conditions which could result in a damage of components [13]. While the situation is understood for diesel applications, many unknowns exist for gasoline engines.…”

Section: Introductionmentioning

confidence: 99%

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Oxidation of Soot (Printex® U) in Particulate Filters Operated on Gasoline Engines

Boger¹,

Rose²,

Nicolin³

et al. 2015

Emiss. Control Sci. Technol.

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Gasoline particulate filters are one potential technology path to address the EU6 particulate number regulation for gasoline-powered vehicles. While the passive and active soot regeneration with diesel particulate filters is well understood, almost no data exist under gasoline engine conditions where there is essentially no NO 2 and O 2 available for soot oxidation under normal stoichiometric λ=1 operation. The aim of this paper is to provide information and data to address these gasoline engine-specific conditions. The operation and conditions for a particulate filter in a gasoline direct injection engine environment are discussed utilizing results obtained in a broad range of laboratory and vehicle experiments. Since the accumulation of sufficient soot mass quantities proofed to be challenging on a vehicle, the present study is using Printex® U as surrogate soot, representing the least reactive fraction of particulate matter originating from the combustion. Conditions which enable the oxidation of soot under normal driving operation are identified. Conditions enabling passive soot oxidation in a gasoline engine exhaust system are proposed as well as potential worst case conditions.

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Section: Laboratory Reactor Experiments Simulating Fuel Cutsmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Oxidation of Soot (Printex® U) in Particulate Filters Operated on Gasoline Engines

Boger¹,

Rose²,

Nicolin³

et al. 2015

Emiss. Control Sci. Technol.

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“…To guarantee a complete regeneration various parameters have to be defined, such as the start and the timing of the regeneration [9,10]. The amount of soot loaded in the filter is a key parameter to define the optimal conditions for these parameters in order to reduce the regeneration negative effect on engine operation and fuel consumption.…”

Section: Introductionmentioning

confidence: 99%

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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“…The EDRDPF status is calculated using only these data, which is unique. Some other solutions, are based on input data from onboard buses [3], [4], [11], [15]. This recognition methodology will be described in a future paper.…”

mentioning

confidence: 99%

Autonomous control system of Electrically Regenerable Diesel Particulate Filter for light duty vehicles

Krivka

Kribsky

Valda

et al. 2014

2014 22nd Telecommunications Forum Telfor (TELFOR)

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This paper describes a new approach to designing ERDPF control system. Contrary to the previous system, which used the high performance relay for switching the regeneration current, the new solution uses only semiconductor electronic parts. The ERDPF filter is designed to meet the requirements of the EURO 6 emission standard for PM. The ERDPF filter was designed with emphasis on the independence of the connection to internal vehicle communication buses, which means that the ERDPF control system does not need any external data for its correct function.

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Regeneration Strategies for an Enhanced Thermal Management of Oxide Diesel Particulate Filters

Cited by 51 publications

References 8 publications

Oxidation of Soot (Printex® U) in Particulate Filters Operated on Gasoline Engines

Oxidation of Soot (Printex® U) in Particulate Filters Operated on Gasoline Engines

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

Autonomous control system of Electrically Regenerable Diesel Particulate Filter for light duty vehicles

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