Improvement of SiC DPF Control Strategies for Uncontrolled Regenerations with the Aid of Quasi 3D DPF Model

Darcy, Pierre; Guerry, S.; Latouchent, Guillaume; Barbier, Pascal; Fasolo, Bertrand

doi:10.4271/2008-01-1753

Cited by 10 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If not, the stop regeneration and DPF is damaged, failure code returns. If so, stop post injection, change TY, TYQZ as zero, DPF collection efficiency as initial value and stored, then the regeneration ends [30,31].…”

Section: Hot Spotmentioning

confidence: 99%

Research on particulate filter simulation and regeneration control strategy

Liu

2017

Mechanical Systems and Signal Processing

View full text Add to dashboard Cite

Section: Hot Spotmentioning

confidence: 99%

Research on particulate filter simulation and regeneration control strategy

Liu

2017

Mechanical Systems and Signal Processing

View full text Add to dashboard Cite

“…The rate of soot combustion r · is conveyed via an Arrhenius expression. 38–40 It is supposed that soot accumulation rate is negligible compared to soot burn rate during the regeneration process, soot mass ( m soot ) balance is stated by:…”

Section: Theorymentioning

confidence: 99%

A study on the filtration efficiency and regeneration capacity of the gasoline particulate filter

Yue¹,

Lehmen

Nieuwstadt

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

Gasoline particulate filters (GPF) are becoming a standard technology in gasoline engines because of the need for compliance with particulate matter (PM) emissions requirement. Generally, GPFs can be placed after a three-way catalysts (TWC) in the same can, or in a separate can downstream. As typical wall-flow filters, particulate matter is removed from the exhaust by physical filtration using a honeycomb structure similar to an emissions catalyst substrate but with the channels blocked at alternate ends. The goal of work was to the study the filtration efficiency and regeneration capacity of the GPF. Laboratory emission tests were carried out for one 2.0L gasoline turbo direct injection (GTDI) prototype vehicle according to the new World Harmonized Light Vehicle Test Cycle (WLTC). The data showed that the vehicle has a reliable and high GPF filtration efficiency to intercept the particulate pollution from the exhaust. Meanwhile, five 2.0L GTDI prototype cars from respective China stage 6 platforms were used for further study of soot accumulation and regeneration capacity. The results, in terms of modeled emissions in tests under real driving conditions of China cities (Nanjing and Hainan), showed that the heavy traffic road conditions lead to a low probability of soot regeneration. However, the GPF regeneration capacity of the test convoy was still adequate. In addition, the drive cycle exhibiting good road conditions with more aggressive driving behaviors offered a better regeneration environment due to the elevated GPF temperature and more frequent occurrence of deceleration fuel shut off (DFSO) creating an environment of excess oxygen content.

show abstract

“…9 The combination of internal postinjection with other strategies may lead to uncontrolled DPF regeneration, especially under engine conditions with reduced heat transfer, such as “back-to-idle” or deceleration modes, which requires a revision of the regeneration strategies. 10,11 Consequently, despite oxygen favors regeneration, some authors, such as Bouchez and Dementhon, 6 Kodama et al 12 and Ootake et al, 13 proposed to combine some of the previous strategies with EGR increases, contrary to its elimination, either through the opening of the EGR valve or through the partial closure of a throttle valve located at the intake manifold (TVA). For these reasons, and because the electronic control unit (ECU) equipping the engine used in this research work enables their modification, injection timing, lately postinjected fuel quantity and EGR have been selected as optimization parameters in this work.…”

Section: Introductionmentioning

confidence: 99%

“…Finally, different studies have compared DPF regeneration using different fuels, 3–18 although few of them have done it under the engine operating conditions, which are most representative of typical DPF regeneration conditions. 3,14,18 In addition, comparisons presented between soots derived from different fuels are not conclusive.…”

Section: Introductionmentioning

confidence: 99%

Strategies for active diesel particulate filter regeneration based on late injection and exhaust recirculation with different fuels

Lapuerta

Hernández

Oliva

2012

International Journal of Engine Research

View full text Add to dashboard Cite

Wall flow–type particulate filters are used in diesel vehicle engines to reduce particulate emissions below the limits established in regulations Euro 5 and Euro 6. The soot accumulated in the trap is eliminated during regeneration processes, often combining passive strategies with active ones. Active regeneration is conducted by modifications of the engine control parameters with respect to those set for normal vehicle operation. In this work, three of these parameters were modified to look for an optimized regeneration strategy, considering fuel consumption, gaseous emissions and rate of regeneration. The selected parameters were injection timing (affecting all injection events), exhaust gas recirculation and amount of postinjected fuel. The fuel tested was considered as an additional variable, and therefore, tests were performed with three different fuels: an ultra-low sulfur diesel fuel, a biodiesel fuel produced from animal fat and a gas-to-liquid fuel from low-temperature Fischer–Tropsch process. It was proved that eliminating the gas recirculation is the optimal option for a fast regeneration and reduced fuel consumption and that the late postinjection is essential to keep the temperature conditions needed for an efficient regeneration. Some limits were also proposed for these parameters to prevent from excessively fast or uncontrolled regeneration, to avoid excessive increase in fuel consumption and to reduce the probability of fuel dilution. Finally, the fuel properties were proved to be very relevant to the regeneration process, and therefore, both biodiesel and gas-to-liquid fuels (especially the former) showed un-optimized regeneration processes under the conditions set for regeneration process optimized with diesel fuel.

show abstract

Improvement of SiC DPF Control Strategies for Uncontrolled Regenerations with the Aid of Quasi 3D DPF Model

Cited by 10 publications

References 12 publications

Research on particulate filter simulation and regeneration control strategy

Research on particulate filter simulation and regeneration control strategy

A study on the filtration efficiency and regeneration capacity of the gasoline particulate filter

Strategies for active diesel particulate filter regeneration based on late injection and exhaust recirculation with different fuels

Contact Info

Product

Resources

About