A Super Clean Diesel Vehicle for US LEV-III SULEV Category: Second Report; Advanced A/F Control for NOx Reduction and for SCR Heat Up

Balland, Jean; Schreurs, Bart; Peters, Michel; Parmentier, Michaël; Schmitt, Julien; Hardam, Hans; Yamada, Masatoshi; Uike, Hiroshi; Takahashi, Toshiharu; Yasui, Yuji; Hashimoto, Eiji; Matsunaga, Hideki; Sato, Naohiro

doi:10.1007/978-3-642-33841-0_14

Cited by 4 publications

(2 citation statements)

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“…Another LEVIII approach was reported by Balland, et al, [30]. The most significant challenge for SCR and other deNOx systems is in reducing high-load NOx.…”

Section: Dieselmentioning

confidence: 92%

Vehicular Emissions in Review

Johnson¹

2013

SAE Int. J. Engines

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This review paper summarizes major developments in vehicular emissions regulations and technologies (light-duty, heavy-duty, gasoline, diesel) in 2012. First, the paper covers the key regulatory developments in the field, including finalized criteria pollutant tightening in California; and in Europe, the development of real-world driving emissions (RDE) standards. The US finalized LD (light-duty) greenhouse gas (GHG) regulation for 2017-25. The paper then gives a brief, high-level overview of key developments in LD and HD engine technology, covering both gasoline and diesel. Marked improvements in engine efficiency are summarized for gasoline and diesel engines to meet both the emerging NOx and GHG regulations. HD engines are just starting to demonstrate 50% brake thermal efficiency. NOx control technologies are then summarized, including SCR (selective catalytic reduction) with ammonia, and hydrocarbon-based approaches. Emphasis is on low-temperature deNOx, durability, and cost reduction. PM (particulate matter) reduction technologies are evolving around SCR integration and the behavior of soot and ash deposits. Next, DOC (diesel oxidation catalyst) developments are summarized. They mainly involve better understanding of aging and substitution of base metals oxides for precious metal. The paper then discusses some key developments in gasoline emission controls, focusing on new coated GPF (gasoline particulate filter) understanding. Advanced three-way catalysts improve with layered coating technology, and with improved understanding on engine calibration.

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“…Another LEVIII approach was reported by Balland, et al, [30]. The most significant challenge for SCR and other deNOx systems is in reducing high-load NOx.…”

Section: Dieselmentioning

confidence: 92%

Vehicular Emissions in Review

Johnson¹

2013

SAE Int. J. Engines

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“…They can generally be divided into so‐called active SCR and passive SCR applications. While in case of an active SCR combination an external AdBlue® injection is required, in a passive SCR combination, the LNT generates ammonia (by NO and H 2 ) during an excessive engine rich phase (discontinuously), which can be absorbed and used by a downstream SCR catalyst , . However, the ammonia formation by the LNT during the regeneration depends on various factors.…”

Section: Overview Of Technical Solutions For Elimination Of Nitrogen mentioning

confidence: 99%

Potential Technical Approaches for Improving Low‐Temperature NO_x Conversion of Exhaust Aftertreatment Systems

Braun

Gebhard

Matysik

et al. 2018

Chemie Ingenieur Technik

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Lean‐burn engines, such as diesel engines, are widely used in mobile and stationary applications. Operation of lean‐burn engines leads to formation of distinct amounts of nitrogen oxides (NO and NO2). Efficient aftertreatment is mandatory to meet legal requirements, especially at low exhaust temperatures, as for the future a decline of the exhaust temperature level can be predicted due to improved engine efficiencies. Within this review, potential technical solutions to enhance the DeNOx‐aftertreatment efficiency at low exhaust temperatures are presented.

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Review of Selective Catalytic Reduction (SCR) and Related Technologies for Mobile Applications

Johnson

2014

Urea-SCR Technology for deNOx After Treatment of Diesel Exhausts

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A Super Clean Diesel Vehicle for US LEV-III SULEV Category: Second Report; Advanced A/F Control for NOx Reduction and for SCR Heat Up

Cited by 4 publications

References 0 publications

Vehicular Emissions in Review

Vehicular Emissions in Review

Potential Technical Approaches for Improving Low‐Temperature NO_x Conversion of Exhaust Aftertreatment Systems

Review of Selective Catalytic Reduction (SCR) and Related Technologies for Mobile Applications

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A Super Clean Diesel Vehicle for US LEV-III SULEV Category: Second Report; Advanced A/F Control for NOx Reduction and for SCR Heat Up

Cited by 4 publications

References 0 publications

Vehicular Emissions in Review

Vehicular Emissions in Review

Potential Technical Approaches for Improving Low‐Temperature NOx Conversion of Exhaust Aftertreatment Systems

Review of Selective Catalytic Reduction (SCR) and Related Technologies for Mobile Applications

Contact Info

Product

Resources

About

Potential Technical Approaches for Improving Low‐Temperature NO_x Conversion of Exhaust Aftertreatment Systems