Evaluation of the Operating Range of Partially Premixed Combustion in a Multi Cylinder Heavy Duty Engine with Extensive EGR

Lewander, Magnus; Johansson, Bengt; Tunestål, Per; Keeler, Nathan; Tullis, Simon; Milovanović, Nebojša; Bergstrand, Pär

doi:10.4271/2009-01-1127

Cited by 32 publications

(12 citation statements)

References 8 publications

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“…Towards higher efficiencies and lower emissions, modern engines are being designed to operate in throttleless, direct-injection, and compression-ignition modes. Depending on the injection timing, the ignition and combustion occur in the homogeneous charge compression ignition (HCCI) [3] to partially premixed combustion (PPC) modes [4][5][6][7]. In these engines, autoignition of the reactant mixture plays the key role in determining the start and duration of the combustion process.…”

Section: Introductionmentioning

confidence: 99%

Chemical kinetic insights into the ignition dynamics of n-hexane

Tingas

Wang

Sarathy

et al. 2018

Combustion and Flame

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Combustion and Flame Rights NOTICE: this is the author's version of a work that was accepted for publication in Combustion and Flame. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Combustion and Flame,

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Section: Introductionmentioning

confidence: 99%

Chemical kinetic insights into the ignition dynamics of n-hexane

Tingas

Wang

Sarathy

et al. 2018

Combustion and Flame

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“…In recent years, advancement in the design of such versatile and flexible systems has led to the development of alternative combustion modes including low temperature combustion (LTC) [8][9][10][11][12][13][14], homogeneous charge compression ignition (HCCI) [14][15][16][17][18][19][20][21][22], premixed charged compression ignition (PCCI) [23][24][25][26][27][28][29] and partially premixed combustion (PPC) [30][31][32][33] through the application of sophisticated fuel injection strategies. The results revealed the potential for simultaneous reduction of NOx and PM emissions through the application of such fuel injection and combustion modes.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of hydraulic effects of two-stage fuel injection on fuel-injection systems and diesel combustion in a high-speed optical common-rail diesel engine

Herfatmanesh

Zhao

2012

International Journal of Engine Research

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The final, definitive version of this paper has been published in International Journal of Engine Research, Vol 15 Issue 1, September 2012, ppublished by SAGE Publishing, All rights reserved.In order to meet the ever more stringent emission standards, significant efforts have been devoted to the research and development of internal combustion engines. The requirements for more efficient and responsive diesel engines have led to the introduction and implementation of multiple injection strategies. However, the effects of such injection modes on the hydraulic systems, such as the high-pressure pipes and fuel injectors, must be thoroughly examined and compensated for since the combustion and the formation of pollutants in direct-injection engines are directly influenced by the spatial and temporal distribution of the injected fuel within the combustion chamber. This study investigated the hydraulic effects of two-stage fuel injection on diesel combustion and emissions. The fuel-injection system was characterised for all the tested strategies through the measurement of the fuel-injection rate and quantity. In particular, the interaction between the two injection events was identified. The effects of two-stage injection, dwell angle and the interactions between two consecutive injection events on the combustion process and the emissions were investigated in a high-speed direct-injection single-cylinder optical diesel engine using heat-release analysis and high-speed fuel spray and combustion visualisation techniques. The results indicated that the two-stage injection strategy has the potential for simultaneous reduction of nitrogen oxide, soot and unburned hydrocarbon emissions. The results suggested that an optimum fuel quantity in the first injection exists, 0???30%, with which simultaneous reduction of nitrogen oxide, soot and unburned hydrocarbon emissions can be achieved with the added benefits of improved engine performance, fuel economy and combustion noise. However, higher soot emissions were produced, mainly due to the interaction between the two consecutive fuel-injection events whereby the fuel sprays during the second injection were injected into burning regions, as well as reduced soot oxidation due to the continuation of the combustion into the expansion stroke

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“…But before being possible to implement in all load conditions, injections systems need to be fine-tuned and comprehensively tested, and fuelling principles need to be reconsidered. One alternative is to use gasoline in diesel engines, another is to use dual fuel, with diesel for part load and gasoline for full load (Dunbeck and Reitz, 2010;Lewander et al, 2009;Manente et al, 2010aManente et al, , 2010bRa et al, 2009). …”

Section: Optimization Of the Combustion Processmentioning

confidence: 99%

Reducing automotive emissions—The potentials of combustion engine technologies and the power of policy

2012

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Reducing transport emissions, in particular vehicular emissions, is a key element for mitigating the risks of climate change. In much of the academic and public discourse the focus has been on alternative vehicle technologies and fuels (e.g. electric cars, fuel cells and hydrogen), whereas vehicles based on internal combustion engines have been perceived as close to their development limits. This paper offers a different perspective by demonstrating the accelerated improvement processes taking place in established combustion technologies as a result of a new competition between manufacturers and technologies, encouraged both by more stringent EU legislation and new CAFE levels in the US. The short-term perspective is complemented by an analysis of future improvement potentials in internal combustion technologies, which may be realized if efficient regulation is in place. Based on a comparison of four different regulatory approaches, the paper identifies the need for a long-term technology-neutral framework with stepwise increasing stringencies, arguing that this will encourage continual innovation and diffusion in the most effective way.

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Evaluation of the Operating Range of Partially Premixed Combustion in a Multi Cylinder Heavy Duty Engine with Extensive EGR

Cited by 32 publications

References 8 publications

Chemical kinetic insights into the ignition dynamics of n-hexane

Chemical kinetic insights into the ignition dynamics of n-hexane

Experimental investigation of hydraulic effects of two-stage fuel injection on fuel-injection systems and diesel combustion in a high-speed optical common-rail diesel engine

Reducing automotive emissions—The potentials of combustion engine technologies and the power of policy

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