Simultaneous Low Engine-Out NOx and Particulate Matter with Highly Diluted Diesel Combustion

Wagner, R. M.; Green, Johney B.; Dam, Thang Q.; Edwards, K. Dean; Storey, John

doi:10.4271/2003-01-0262

Cited by 83 publications

(49 citation statements)

References 8 publications

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“… For operating point B, PM emissions are first increased as for operating point A, and then decreased for high EGR rates (over 36 %). As depicted on Figure 4 c, the core spray temperature where PM are produced becomes too low for PM formation (minimal temperature needed for soot inception: 1400 K [11]), thus entering a low temperature combustion (LTC) mode with low NOx and PM emissions, as described by other researchers [27][28][29]. This LTC combustion mode is accompanied with a large increase of CO and HC emissions, of 151 % and 158 % respectively when increasing EGR rate from 25 % to 38 % (with air-EGR mixer).…”

Section: Experimental Results: Nox-pm Trade-offs With and Without Airmentioning

confidence: 78%

Influence of EGR unequal distribution from cylinder to cylinder on NOx–PM trade-off of a HSDI automotive Diesel engine

Maiboom

Tauzia

Hétet

2009

Applied Thermal Engineering

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The influence of cylinder-to-cylinder variation in EGR distribution on the NOx-PM trade-off (while varying EGR rate) is studied on an automotive high-speed direct injection Diesel engine. Experiments have been conducted on an engine test bench with and without air-EGR mixer and demonstrate that variations in cylinder-to-cylinder EGR distribution results in a deteriorated NOx-PM trade-off (increased NOx emissions level at a given PM emissions level, or increased PM emissions level at a given NOx emissions level) compared to the well mixed configuration with equal EGR rate for all the cylinders. A qualitative study as well an original experiment is conducted to explain this emissions increase induced by unequal distribution of EGR. When recirculating hot exhaust gases, the emissions increase is due to cylinder-to-cylinder variations in intake gas composition and temperature.Keywords: Diesel engine; pollutant emissions; exhaust gas recirculation (EGR); unequal cylinder-to-cylinder EGR distribution; EGR maldistribution; NOx-PM trade-off

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Section: Experimental Results: Nox-pm Trade-offs With and Without Airmentioning

confidence: 78%

Influence of EGR unequal distribution from cylinder to cylinder on NOx–PM trade-off of a HSDI automotive Diesel engine

Maiboom

Tauzia

Hétet

2009

Applied Thermal Engineering

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“…Also, higher EGR reduces NOx but increases soot. This is not the case in some advance diesel combustion concepts [40][41][42][43][44][45]. For example in the LTC regime, increasing EGR reduces both NO x and soot.…”

Section: Strategies For Clean Diesel Combustionmentioning

confidence: 98%

“…Another major benefit of EGR is to dilute the mixture by which soot and NO x can be simultaneously reduced [77,78]. The reduction of soot and NO x is a goal that has to be achieved and the PCCI combustion mode offers a solution.…”

Section: Low Temperature Combustionmentioning

confidence: 99%

Investigation of Cluster-Nozzle Concepts for Direct Injection Diesel Engines

Won

Peters

2009

Atomiz Spr

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“…Wagner et al tried to achieve lower emission of NOx and soot using highly diluted intake mixture. At very high EGR rate (around 44%), PM emission decreased sharply with a continuous drop in NOx emission but this high EGR rate significantly affect the fuel economy [14]. Sasaki et al conducted experiments using EGR on direct injection gasoline engine and reported that an appropriate volume of EGR improves fuel econo my and HC emissions.…”

Section: Exhaust Gas Recirculationmentioning

confidence: 99%

Effect of Exhaust Gas Recirculation (EGR) on Performance and Emission of a Compression Ignition Engine with Staged Combustion (Insertion of Unburned Hydrocarbon)

Hussain¹,

Palaniradja²,

Alagumurthi³

et al. 2012

IJEE

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The usage of EGR adopted diesel engine increasing day by day world wide to reduce the NOx emissions. The EGR adopted engines can reduce NOx Considerably but it adversely improves the emissions of UHC nearly 40 to 50 %. We can avoid this effect by Reutilizat ion of UHC. In this paper the experimental investigation has been carried out on EGR adopted direct injection co mpression ignition engine with insertion of unburned hydro carbon rich exhaust. The results were presented and compared with all EGR levels. The result were evidenced that can reduce 20 to 25 % of UHC by this method.

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Simultaneous Low Engine-Out NOx and Particulate Matter with Highly Diluted Diesel Combustion

Cited by 83 publications

References 8 publications

Influence of EGR unequal distribution from cylinder to cylinder on NOx–PM trade-off of a HSDI automotive Diesel engine

Influence of EGR unequal distribution from cylinder to cylinder on NOx–PM trade-off of a HSDI automotive Diesel engine

Investigation of Cluster-Nozzle Concepts for Direct Injection Diesel Engines

Effect of Exhaust Gas Recirculation (EGR) on Performance and Emission of a Compression Ignition Engine with Staged Combustion (Insertion of Unburned Hydrocarbon)

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