Comparison of De-NOx and Adsorber Catalysts to Reduce NOx - Emissions of Lean Burn Gasoline Engines

L#tkemeyer, G.; Weinowski, Rolf; Lepperhoff, Gerhard; Brogan, Mark S.; Brisley, R. J.; Wilkins, A. J. J.

doi:10.4271/962046

Cited by 16 publications

(5 citation statements)

References 1 publication

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“…The first one was an oxidation catalyst located just at the outlet of the turbine: -monolith volume : 0.8 l; -monolith material : ceramic; -cells per square inch/thickness (mil): 400/6.5; -precious metal: platinum; -precious metal load: 50 g/ft 3 (1 ft = 30.48 cm), soit 1.76 kg/m 3 . The second catalyst, located 90 cm downstream from the Light Off catalyst, was a NO x adsorber: -monolith volume: 1.9 l; -monolith material: ceramic; -cells per square inch/thickness (mil): 400/6; -precious metal load: 210 g/ft 3 (1 ft = 30.48 cm), soit 7.40 kg/m 3 ; -platinum/palladium/rhodium: 10/10/1.…”

Section: Experimental Set Upmentioning

confidence: 99%

“…1). Its main characteristics are as follows: -bore: 85 mm; -stroke: 88 mm; -displacement: 1.997 cm 3 ; -compression ratio: 18:1; -maximum power: 80 kW at 4000 rpm; -maximum torque: 260 Nm at 1750 rpm. Engine set up -Peugeot 2 l HDI.…”

Section: Experimental Set Upmentioning

confidence: 99%

“…The elimination of NO x produced by lean burn engines has been the subject of numerous developments [1][2][3][4][5]. NO x adsorber technology is an efficient solution to the NO x issue over quite a wide temperature range.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Application of NOx Adsorber to Diesel Depollution: Performances and Durability

Dementhon

Colliou

Martin

et al. 2003

Oil & Gas Science and Technology - Rev. IFP

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Section: Experimental Set Upmentioning

confidence: 99%

Section: Experimental Set Upmentioning

confidence: 99%

See 1 more Smart Citation

Application of NOx Adsorber to Diesel Depollution: Performances and Durability

Dementhon

Colliou

Martin

et al. 2003

Oil & Gas Science and Technology - Rev. IFP

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“…The latter is subsequently reduced to elemental nitrogen on the Pt and Rh sites. The recently developed NOx removal techniques based on NSC are only suitable for lean-burn gasoline engines [1,2]. The application of NSC schemes as exhaust aftertreatment systems for diesel engines, especially for heavy-duty engines, requires periodically fuel-rich conditions (for the NO 2 decomposition) in the engine exhaust.…”

Section: Introduction and Objectivementioning

confidence: 99%

Diesel engine control optimization for transient operation with lean/rich switches

Kyrtatos

Tzanos

Papadopoulos

2003

International Journal of Engine Research

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Transient operation of a direct injection heavy duty (DI HD) diesel engine equipped with an NOx storage catalyst (NSC) was simulated using a ‘virtual powerplant’ simulation code with a zero-dimensional multizone combustion model. For the regeneration of the NSC the engine is required to work with lean/rich operation switches, which necessitates advanced engine management schemes for the fuelling, throttle and turbocharger wastegate. An optimization procedure, using the simulation model, resulted in a proposed schedule for the control of the various engine components involved in such engine operation.

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“…Alternatively, there are systems which are inherently dynamic even at steady-state engine-operation conditions. Such systems include catalytic exhaust-emissions treatment devices with self-initiated and sustained oscillations (2) and NO X adsorber systems (3,4,5). High-speed diagnostics, capable of temporally resolving such emissions transients, are required to characterize the process, verify calculated system inputs, and optimize the system.…”

Section: Introductionmentioning

confidence: 99%