Transient Emission Predictions With Quasi Stationary Models

Ericson, Claes; Westerberg, Björn; Egnell, Rolf

doi:10.4271/2005-01-3852

Cited by 52 publications

(25 citation statements)

References 4 publications

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“…3, based on various experimental results at transient conditions obtained at the authors' laboratory on the particular engine. In a previous paper by Ericson et al [16], the correction coefficients applied were based on air-fuel ratio variations during transients; in the present work, a different procedure was followed influenced by the following, rather unique, characteristic of the engine in hand.…”

Section: Transient Discrepanciesmentioning

confidence: 99%

Study of diesel engine performance and emissions during a Transient Cycle applying an engine mapping-based methodology

Giakoumis

Alafouzos

2010

Applied Energy

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Section: Transient Discrepanciesmentioning

confidence: 99%

Study of diesel engine performance and emissions during a Transient Cycle applying an engine mapping-based methodology

Giakoumis

Alafouzos

2010

Applied Energy

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“…Some researchers have applied the relevant analyses to transient cycle emission studies. For example, Jiang and van Gerpen [8] focused on particulate matter during the American FTP cycle, Ericson et al [9] investigated all regulated pollutants during the European heavy-duty engines ETC, and the present research group focused on NO and soot emissions for light-duty [10] and heavy-duty [11] vehicles. In parallel, Kirchen et al [12] developed a mean value model for soot and showed the effectiveness with tip-in operations employing empirical correlations between engine-out emissions and engine operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Diesel-Engined Vehicle’s Performance and Emissions during the WLTC Driving Cycle—Comparison with the NEDC

Giakoumis

Zachiotis

2017

Energies

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Abstract:The present work presents results from an experimentally validated simulation code, regarding a turbocharged diesel-powered vehicle running on the recently developed worldwide light-duty vehicles WLTC driving cycle. The simulation is based on an engine mapping approach, with correction coefficients applied vis-Ò-vis the transient discrepancies encountered. Both performance and engine-out emission results are presented and discussed. As regards the latter, the concerned pollutants are soot and nitrogen monoxide. Since the WLTC driving cycle is scheduled to replace the NEDC in Europe from September 2017 with regard to the certification of passenger cars and light-duty trucks, a comparative analysis between the two test schedules is also performed for the engine/vehicle under study.

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“…As was the case with other similar mappingbased approaches developed in the past [10][11][12][13][14][18][19][20][21][22][23], the context of quasi-linear modeling [24] is, in general, followed.…”

Section: Methodology-engine and Vehicle Modelmentioning

confidence: 99%

Analysis of the Effect of Vehicle, Driving and Road Parameters on the Transient Performance and Emissions of a Turbocharged Truck

Giakoumis

Triantafillou

2018

Energies

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Abstract:In this paper, a fundamental analysis of the effects of various influential parameters on the performance and emissions of a turbocharged truck operating under transient conditions is presented. The results derive from a detailed vehicle model that comprises two parts. The first is an engine performance and emissions module that follows a mapping approach, with experimentally derived correction coefficients employed to account for transient discrepancies; this is then coupled to a comprehensive vehicle model that takes into account various vehicle operation attributes such as gearbox, tires, tire slip, etc. Soot, as well as nitrogen monoxide, are the examined engine-out pollutants, together with fuel consumption and carbon dioxide. The parameters examined are vehicular (mass and gearbox), driving (driver 'aggressiveness' and gear-shift profile) and road (type and grade). From the range of values investigated, the most critical parameters for the emission of NO and soot are vehicle mass, driving 'aggressiveness' and the exact gear-change profile. Vehicle mass, driving 'aggressiveness' and road-grade were identified as the most influential parameters for the emission of CO 2 . A notable statistical correlation was established between pollutant emissions (NO, soot) and vehicle mass or road-tire friction, as well as between fueling/CO 2 and vehicle mass, road-tire friction and road grade. It is believed that the results obtained shed light into the effect of critical operating parameters on the engine-out emissions of a truck/bus, underlining at the same time the peculiarities of transient operating conditions.

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Transient Emission Predictions With Quasi Stationary Models

Cited by 52 publications

References 4 publications

Study of diesel engine performance and emissions during a Transient Cycle applying an engine mapping-based methodology

Study of diesel engine performance and emissions during a Transient Cycle applying an engine mapping-based methodology

Investigation of a Diesel-Engined Vehicle’s Performance and Emissions during the WLTC Driving Cycle—Comparison with the NEDC

Analysis of the Effect of Vehicle, Driving and Road Parameters on the Transient Performance and Emissions of a Turbocharged Truck

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