Methodologies to Control DPF Uncontrolled Regenerations

Zhan, Reggie; Huang, Yuhao; Khair, Magdi

doi:10.4271/2006-01-1090

Cited by 43 publications

(30 citation statements)

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“…In some cases, a switch in the combustion or boosting mode may be necessary. Lot of research effort is done in modeling the raw pollutant production [80,81] and the regeneration process itself [82] and in the limit, model-based approaches may be used [83].…”

Section: After-treatment System Control and Diagnosismentioning

confidence: 99%

A Challenging Future for the IC Engine: New Technologies and the Control Role

Payri

Lujan

Guardiola

et al. 2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-New regulations on pollutants and, specially, on CO 2 emissions could restrict the use of the internal combustion engine in automotive applications. This paper presents a review of different technologies under development for meeting such regulations, ranging from new combustion concepts to advanced boosting methods and after-treatment systems. Many of them need an accurate control of the operating conditions and, in many cases, they impose demanding requirements at a system integration level. In this framework, engine control disciplines will be key for the implementation and development of the next generation engines, taking profit of recent advancements in models, methods and sensors. According to authors' opinion, the internal combustion engine will still be the dominant technology in automotive applications for the next decades.Re´sume´-Un challenge pour le futur du moteur a`combustion interne : nouvelles technologies et roˆle du controˆle moteur -Les nouvelles normes sur les e´missions, en particulier le CO 2 , pourraient re´duire l'utilisation du moteur a`combustion interne pour les ve´hicules. Cet article pre´sente une revue de diffe´rentes technologies en cours de de´veloppement afin de respecter ces normes, depuis de nouveaux concepts de combustion jusqu'a`des syste`mes avance´s de suralimentation ou de post-traitement. La plupart de ces technologies demande un controˆle pre´cis des conditions de fonctionnement et impose souvent de fortes contraintes lors de l'inte´gration des syste`mes. Dans ce contexte et en profitant des dernie`res avance´es dans les mode`les, les me´thodes et les capteurs, le controˆle moteur jouera un roˆle clef dans la mise en oeuvre et le de´veloppement de la prochaine ge´ne´ration de moteurs. De l'avis des auteurs, le moteur ac ombustion interne restera la technologie dominante pour les ve´hicules des prochaines de´cennies.

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Section: After-treatment System Control and Diagnosismentioning

confidence: 99%

A Challenging Future for the IC Engine: New Technologies and the Control Role

Payri

Lujan

Guardiola

et al. 2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Based on the results in this paper and the previous study, 1 two major types of DPF uncontrolled regeneration previously identified by Zhan et al 15 are modified and recategorized in Table 7. …”

Section: Discussionmentioning

confidence: 94%

Modeling uncontrolled regeneration of diesel particulate filters, taking into account hydrocarbon slip

Lee

Rutland

2012

Proceedings of the Institution of Mechanical Engineers, Part D:

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The effect of hydrocarbon slip from a diesel oxidation catalyst on active regeneration of a diesel particulate filter is investigated by developing a generalized zero-dimensional diesel particulate filter model to predict the wall temperature of the diesel particulate filter and the trapped mass of particulate matter. Exhaust fuel injection methodology is applied to provide a high temperature for regeneration by oxidation in the diesel oxidation catalyst. However, the diesel oxidation catalyst reactions may be incomplete and hydrocarbon slip can occur. It is confirmed that two exothermic reactions, namely soot oxidation and hydrocarbon oxidation, which proceed simultaneously may result in the synergistic effect of a rise in the temperature. This is primarily because the temperature is the common factor that affects both reaction rates, i.e. a rise in the temperature caused by one reaction can affect the increase in the reaction rate of another reaction through the exotherms created. Accurate prediction of the temperature rise during active regeneration of the diesel particulate filter is dependent on several crucial factors: the initial wall temperature of the diesel particulate filter, the inlet temperature of the diesel particulate filter, the initial loading level of particulate matter, the exhaust mass flow rate, the oxygen concentration, and hydrocarbon slip. Several simulations revealed that hydrocarbon slip can be one of the reasons for uncontrolled regeneration of the diesel particulate filter. It is concluded that, if there is a considerable amount of hydrocarbon slip, then uncontrolled regeneration of the diesel particulate filter easily occurs when the exhaust mass flow rate is rapidly reduced to the idle condition during regeneration. Flow transient simulations also confirmed that the temperature ramp-up rate and the point of time when the exhaust mass flow rate is reduced determine the overall trend of the temperature rise and the characteristics of the thermal behavior of the diesel particulate filter.

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“…Zhan et al (2006) presented methodologies to control DPF regeneration to preserve durability life. Zhan et al (2007) provided a comprehensive summary of the durability failure modes and durability validation testing methods for DPF.…”

Section: Durability Of Diesel Oxidation Catalyst and Particulate Filtermentioning

confidence: 99%

Durability and reliability in diesel engine system design

Xin¹

2013

Diesel Engine System Design

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Methodologies to Control DPF Uncontrolled Regenerations

Cited by 43 publications

References 0 publications

A Challenging Future for the IC Engine: New Technologies and the Control Role

A Challenging Future for the IC Engine: New Technologies and the Control Role

Modeling uncontrolled regeneration of diesel particulate filters, taking into account hydrocarbon slip

Durability and reliability in diesel engine system design

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