Implementation of Ethanol Diesel Blend Fuels in PCCI Combustion

Mohammadi, Ali; Kee, Sung-Sub; Ishiyama, Takuji; Kakuta, Takaaki; Matsumoto, Teppei

doi:10.4271/2005-01-3712

Cited by 34 publications

(13 citation statements)

References 9 publications

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“…Besides, the oxygenated molecular structure and good atomization properties help in the formation of a leaner and more homogeneous mixture. The alternative fuels bioethanol and n-butanol are also widely used due to their high oxygen concentration [36][37][38][39][40].…”

Section: Alternative Fuelmentioning

confidence: 99%

A Review of Early Injection Strategy in Premixed Combustion Engines

Liang

Zhang

et al. 2019

Applied Sciences

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Due to the increasing awareness of environmental protection, limitations on exhaust emissions of diesel engines have become increasingly stringent. This challenges diesel engine manufacturers to find a new balance between engine performance and emissions. Advanced combustion modes for diesel engines, such as homogeneous charge compression ignition (HCCI) and premixed charge compression ignition (PCCI), which can simultaneously reduce exhaust emissions and substantially improve thermal efficiency, have drawn increasing attention. In order to allow enough time to prepare the homogeneous mixture, the early injection strategy has been utilized widely in HCCI and PCCI diesel engines. This paper is aimed at providing a comprehensive review of the effects of early injection parameters on the performance and emissions of HCCI and PCCI engines fueled by both diesel and alternative fuels. Various early injection parameters, including injection pressure, injection timing, and injection angle, are discussed. In addition, the effect of the blending ratio of alternative fuels is also summarized. Every change in parameters has its own advantages and disadvantages, which are explained in detail in order to help researchers choose the best early injection parameters for HCCI and PCCI engines.

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Section: Alternative Fuelmentioning

confidence: 99%

A Review of Early Injection Strategy in Premixed Combustion Engines

Liang

Zhang

et al. 2019

Applied Sciences

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“…A study by Irshad Ahmed [2] demonstrated over 41% reduction in PM, 27% reduction in CO, and 5% reduction in NO x from a HD diesel engine. Ali Mohammadi et al [3] observed a great improvement in PM and NO x emissions when compared to the diesel combustion with ordinary pilot injection. However, this study also experienced penalties in thermal efficiency, THC and CO emissions.…”

Section: Introductionmentioning

confidence: 98%

An experimental study of performance and emission parameters of a compression ignition engine fueled by different blends of Diesel-Ethanol-biodiesel

Paul

Panua

Bose

et al. 2013

2013 International Conference on Energy Efficient Technologies for Sustainability

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The effects of different ethanol-diesel blended fuels on the performance and emissions of diesel engines have been evaluated experimentally and compared in this paper. After series of miscibility tests, it was found that ethanol is not miscible in diesel beyond 10% concentration. In order to increase its miscibility, Pongamia piñata methyl ester (PPME), popularly known as biodiesel was added as an amphiphilic agent. Different concentrations of ethanol and biodiesel produced different blends from which 4 blends were chosen for engine testing. The results indicated that biodiesel inclusion in the blends increased the brake thermal efficiency and reduced the fuel consumption of the engine. The study of emission parameters also showed that diesel ethanol blends reduced NO x and CO 2 emission but increased hydrocarbon emission with elevated exhaust smoke opacity. It was also noticed that biodiesel inclusion in the blends reduced hydrocarbon emission, reduced exhaust smoke opacity with the penalties of simultaneous increase in NO X and CO 2 emission.

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“…The effects of the alternative blend on the combustion and the engine-out emissions show that optimising the engine settings is mandatory to take advantage of the new formulation properties [8,19]. The large PM reduction paves the way to a new optimisation of the NO x /PM/CO 2 trade-off [12].…”

Section: Preliminary Study To Optimise the Engine Calibrationmentioning

confidence: 99%

“…Some further analysis and studies concerning injection scheme or pilot injection timing effects at different engine speeds and loads were presented in previous references [10,16,19,20]. Beyond the PM emissions reduction partly due to the oxygenated content of this alternative fuel, these analyses lay down guidelines for recalibration and prove the potential benefits of updating the engine settings to improve the engine/fuel matching.…”

Section: Preliminary Study To Optimise the Engine Calibrationmentioning

confidence: 99%

“…The combination of increased EGR rate and decrease of injection pressure seems necessary to manage this issue as well as decreasing further NO x emissions. The main characteristics of the injection (scheme, duration of each injection, dwell time) should be modified in order to ensure a proper pilot injection combustion for example, as explained also in previous publications [16,19,20]. Therefore, to illustrate this last statement it was decided to focus on some dwell times sweep between pilot and main injections (with a reduction of 750 μs until an increase of 500 μs of this time); they are performed at 2 000 rpm, BMEP 4 bar.…”

Section: Preliminary Study To Optimise the Engine Calibrationmentioning

confidence: 99%

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Use of Ethanol/Diesel Blend and Advanced Calibration Methods to Satisfy Euro 5 Emission Standards without DPF

Magand

Pidol

Chaudoye

et al. 2011

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Résumé -Utilisation d'un carburant Diesel éthanolé à l'aide de méthodes de calibration avancées afin de satisfaire les normes Euro 5 sans filtre à particules -L'utilisation des biocarburants s'est développée durant ces dernières années de façon importante afin de diversifier les sources d'énergies et de limiter la hausse des émissions de gaz à effet de serre du secteur des transports. L'un des carburants renouvelables les plus adaptés à une production de masse est l'éthanol. Celui-ci est aujourd'hui principalement utilisé dans les moteurs à allumage commandé, alors que la part des véhicules Diesel sur le marché européen est de l'ordre de 60 %. Ce constat nous a incité à proposer une formulation innovante utilisant de l'éthanol pour les applications Diesel. Les principaux verrous technologiques pour cette utilisation sont la miscibilité, la température d'éclair, la lubrification ou encore l'indice de cétane. Des travaux ont été réalisés pour optimiser la formulation contenant de l'éthanol, des biodiesels de première et seconde générations. Appliqué à un véhicule optimisé pour la norme Euro 4, ce carburant oxygéné a permis une diminution drastique des émissions de particules. Il a été cependant observé que les émissions de HC et de CO peuvent être problématiques tout autant que celles de NO x si les paramètres du contrôle moteur ne sont pas adaptés. Des analyses de combustion apportent une aide à la compréhension de ces résultats par l'étude du délai d'autoinflammation ou encore de la combustion de l'injection pilote. Ainsi, au banc moteur, des méthodes avancées de calibrations telles que les plans d'expériences ont été utilisées pour optimiser l'adéquation moteur/carburant. Une approche de type global a été proposée et comparée à une approche locale plus classique. Cette optimisation à chaud permet une réduction simultanée des émissions de NO x et de particules. Ces résultats laissent également présager une réduction du bruit de combustion et des émissions de CO 2 sur véhicule. Un banc moteur dynamique a été ensuite utilisé pour étudier plus en détail le potentiel de réduction des émissions polluantes. Le comportement d'un véhicule sur le cycle européen NEDC avec démarrage à froid a pu être reproduit. Différentes méthodologies innovantes, basées notamment sur l'optimisation simultanée des cartographies de base et des cartographies de correction à froid, sont présentées. Elles permettent d'adapter les réglages du moteur par rapport à l'impact que ce carburant alternatif peut avoir sur la combustion et l'activation du catalyseur ou les émissions de HC et CO à la source. Ces méthodes ont permis de limiter le travail sur véhicule au banc à rouleaux à la validation des résultats obtenus sur banc moteur et à l'optimisation finale des cartographies à froid. Cette étude a prouvé qu'il était possible de satisfaire les normes Euro 5 avec cette nouvelle formulation de carburant tout en conservant une configuration de véhicule Euro 4 sans filtre à particules. En définitive, ce carburant innovant apparaît comme une solution i...

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Implementation of Ethanol Diesel Blend Fuels in PCCI Combustion

Cited by 34 publications

References 9 publications

A Review of Early Injection Strategy in Premixed Combustion Engines

A Review of Early Injection Strategy in Premixed Combustion Engines

An experimental study of performance and emission parameters of a compression ignition engine fueled by different blends of Diesel-Ethanol-biodiesel

Use of Ethanol/Diesel Blend and Advanced Calibration Methods to Satisfy Euro 5 Emission Standards without DPF

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