The Use of a Partial Flow Filter to Assist the Diesel Particulate Filter and Reduce Active Regeneration Events

Lefort, Isaline; Herreros, José Martín; Tsolakis, Athanasios

doi:10.4271/2014-01-2806

Cited by 5 publications

(2 citation statements)

References 14 publications

(16 reference statements)

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“…P-DPF is used to trap particulate matter (PMs), then utilized with oxygen (O 2 ) and NO 2 to oxide carbon element (soot) in the PMs to form CO 2 and NO. Besides that, future legislation enacting particle mass and number constraints may call for partial ow lters to be installed in the exhaust of gasoline direct injection (GDI) automobiles or as a retro t option for heavy-duty vehicles [14].…”

Section: Partial-ow Diesel Particulate Lter (P-dpf)mentioning

confidence: 99%

Evaluation of Particle Emissions Emitted from a Light-duty Diesel Vehicle Equipped with Retrofit Ceria and Platinum Partial Flow Diesel Particulate Filters

Thin,

Cosh,

Thaeviriyakul

et al. 2023

Preprint

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With increasingly stringent emissions standards, the reduction of harmful exhaust gases and solid particles has become a primary concern for diesel vehicles. This study focuses on a light-duty vehicle equipped with a 2.5L 4-cylinder common rail direct diesel injection engine, evaluated on a chassis dynamometer under four urban driving cycles and one extra-urban cycle of the new European driving cycle (NEDC). The vehicle's emissions were assessed using B10, B20, and B100 fuels in two scenarios: without a retrofit partial filter diesel particulate filter (P-DPF) and with P-DPFs coated with ceria and platinum. Comparing the use of biodiesel, B100 demonstrated a significant reduction of approximately 50% in particulate mass (PM) and particulate number (PN). Furthermore, the results indicated that the utilization of the partial flow DPF led to a PM emissions reduction exceeding 60% and a particle number reduction of up to 45%. Additionally, the installation of a diesel oxidation catalyst (DOC) resulted in reductions of total hydrocarbon (THC) and carbon monoxide (CO) emissions by up to 59% and 81% respectively, compared to the baseline fuel emissions. However, the installation of the retrofit P-DPF and DOC did not have a significant impact on carbon dioxide (CO2) and nitrogen oxides (NOx) emissions. In terms of catalytic coating, the ceria catalyst emerged as a promising and cost-effective alternative to platinum catalysts for reducing pollutant emissions from diesel vehicles. Overall, this study highlights the effectiveness of utilizing B100 biodiesel and the after-treatment system including P-DPFs and DOCs in mitigating particulate matter and certain gaseous emissions, emphasizing the potential of ceria catalysts as a viable option in emission reduction strategies for diesel vehicles.

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Section: Partial-ow Diesel Particulate Lter (P-dpf)mentioning

confidence: 99%

Evaluation of Particle Emissions Emitted from a Light-duty Diesel Vehicle Equipped with Retrofit Ceria and Platinum Partial Flow Diesel Particulate Filters

Thin,

Cosh,

Thaeviriyakul

et al. 2023

Preprint

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show abstract

“…The complexity of the concurrent phenomena has given rise to the study of alternatives, comprising the consideration of different substrate materials [5] and even flow path-lines [6]. Among all of them, cordierite and SiC wall-flow monoliths have shown the best balance between all requirements [7].…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational approach to the transient behaviour of wall-flow diesel particulate filters

Torregrosa

Serrano

Piqueras

et al. 2017

Energy

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The implementation of tight vehicle emission standards has forced manufactures to use aftertreatment systems extensively. In addition to pollutant emissions abatement, these devices have a noticeable impact on the wave pattern. This fact affects the muffler design criteria. All monolithic aftertreatment devices produces a damping effect because of the honeycomb structure and the narrow channels. However, this response is more marked in wall-flow diesel particulate filters (DPF) because of the alternatively plugged ends and the dissipative properties of the porous substrate. The main goal of this paper is to assess the transient fluid-dynamic behaviour of wall-flow DPFs using experimental and modelling techniques. The experimental data were gathered in clean and loaded conditions. The DPF was subjected to a variety of pressure excitations to characterise its transient behaviour in the time and frequency domains. Afterwards, the DPF response was evaluated under engine-like operating conditions in an unsteady flow gas stand. Once the main characteristics of the response were known, a non-linear gas-dynamics model was proposed for analysis and prediction. The model accounts for space and time gradients, combining the thermo-and fluid-dynamic solution with a model based on a packed bed of spherical particles that defines the meso-structure of the loaded substrate.

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Understanding the effects of catalytic partial flow filters on particle removal efficiency

Rounce

Bogarra

Herreros

et al. 2019

Results in Engineering

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The Use of a Partial Flow Filter to Assist the Diesel Particulate Filter and Reduce Active Regeneration Events

Cited by 5 publications

References 14 publications

Evaluation of Particle Emissions Emitted from a Light-duty Diesel Vehicle Equipped with Retrofit Ceria and Platinum Partial Flow Diesel Particulate Filters

Evaluation of Particle Emissions Emitted from a Light-duty Diesel Vehicle Equipped with Retrofit Ceria and Platinum Partial Flow Diesel Particulate Filters

Experimental and computational approach to the transient behaviour of wall-flow diesel particulate filters

Understanding the effects of catalytic partial flow filters on particle removal efficiency

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