Performance and combustion characteristics of a compression ignition engine running on diesel-biodiesel-ethanol (DBE) blends – Part 2: Optimization of injection timing

Guedes, Andrew David Mendes; Braga, Sergio Leal; Pradelle, Florian

doi:10.1016/j.fuel.2018.02.120

Cited by 36 publications

(6 citation statements)

References 41 publications

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“…The reason is that the advance injection can allow the fuel to be mixed early with air and increase the temperature during the premixed phase and ignite the fuel [18]. Compared with the previous study, Mendes Guedes et al (2018) also found that an advanced injection timing increases the pressure and HRR during combustion. In addition, the advanced ignition has a short ignition duration that is able to reduce the carbon emission problems.…”

Section: Ignitability Of Diesel-ethanol-pme Blends With Injection Parmentioning

confidence: 83%

“…In addition, the advanced ignition has a short ignition duration that is able to reduce the carbon emission problems. However, high temperature may lead to NO x emission [8].…”

Section: D50e25b25 16°ca D50e25b25 10°camentioning

confidence: 99%

“…The poor ethanol ignitability is probably due to its higher evaporation enthalpy compared with diesel. Thus, the temperature was reduced during combustion due to the withdrawn heat during combustion [8]. The long delay in combustion causes the fuel to be less combustible and forms the excess fuel in the engine.…”

Section: Introductionmentioning

confidence: 99%

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Modification of a Direct Injection Diesel Engine in Improving the Ignitability and Emissions of Diesel–Ethanol–Palm Oil Methyl Ester Blends

2019

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Blending diesel with biofuels, such as ethanol and palm oil methyl ester (PME), enhances the fuel properties and produces improved engine performance and low emissions. However, the presence of ethanol, which has a small cetane number and low heating value, reduces the fuel ignitability. This work aimed to study the effect of injection strategies, compression ratio (CR), and air intake temperature (Ti) modification on blend ignitability, combustion characteristics, and emissions. Moreover, the best composition of diesel–ethanol–PME blends and engine modification was selected. A simulation was also conducted using Converge CFD software based on a single-cylinder direct injection compression ignition Yanmar TF90 engine parameter. Diesel–ethanol–PME blends that consist of 10% ethanol with 40% PME (D50E10B40), D50E25B25, and D50E40B10 were selected and conducted on different injection strategies, compression ratios, and intake temperatures. The results show that shortening the injection duration and increasing the injected mass has no significant effect on ignition. Meanwhile, advancing the injection timing improves the ignitability but with weak ignition energy. Therefore, increasing the compression ratio and ambient temperature helps ignite the non-combustible blends due to the high temperature and pressure. This modification allowed the mixture to ignite with a minimum CR of 20 and Ti of 350 K. Thus, blending high ethanol contents in a diesel engine can be applied by advancing the injection, increasing the CR, and increasing the ambient temperature. From the emission comparison, the most suitable mixtures that can be operated in the engine without modification is D50E25B25, and the most appropriate modification on the engine is by increasing the ambient temperature at 350 K.

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Section: Ignitability Of Diesel-ethanol-pme Blends With Injection Parmentioning

confidence: 83%

“…In addition, the advanced ignition has a short ignition duration that is able to reduce the carbon emission problems. However, high temperature may lead to NO x emission [8].…”

Section: D50e25b25 16°ca D50e25b25 10°camentioning

confidence: 99%

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Modification of a Direct Injection Diesel Engine in Improving the Ignitability and Emissions of Diesel–Ethanol–Palm Oil Methyl Ester Blends

2019

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“…In addition, the oxygen in the blended fuel and in-cylinder temperature affected by the physical properties of the additive had a direct influence on NOx and CO emissions. Guedes et al [102] studied the performance and combustion characteristics of a compression ignition engine running on (diesel biodiesel ethanol) DBE blends. The engine was fueled with B15E5, B15E10, and B15E15 (B, biodiesel; E, ethanol).…”

Section: Blending Ratiomentioning

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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“…The BSFC analysis provides the opportunity to compare fuel consumption costs in kilowatt-hours for efficient work. Engine efficiency ηe evaluates the efficiency of fuel energy conversion to mechanical energy, which varies with fuel mixture and injection timing [34,69]. NOx is a hazardous material that is formed at high combustion temperatures [70], but with increasing combustion temperature, HC and CO and particulate emissions are reduced [66,71].…”

Section: Introductionmentioning

confidence: 99%

Internal Combustion Engine Analysis of Energy Ecological Parameters by Neutrosophic MULTIMOORA and SWARA Methods

et al. 2019

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The investigation for new innovative solutions to reduce transport pollution is a priority for the European Union (EU). This study includes energy and a sustainable environment, as well as transport, logistics, and information and communication technologies. Energy ecological parameters of internal combustion depend on many factors: fuel, the fuel injection time, engine torque, etc. The engine’s energy ecological parameters were studied by changing engine torques, using different fuels, and changing the start of the fuel injection time. The selection of the optimum parameters is a complex problem. Multicriteria decision-making methods (MCDM) present powerful and flexible techniques for the solution of many sustainability problems. The article presents a new way of tackling transport pollution. The analysis of the energy ecological parameters of the experimental internal combustion engine is performed using the neutrosophic multi-objective optimization by a ratio analysis plus the full multiplicative form (MULTIMOORA) and step-wise weight assessment ratio analysis (SWARA) methods. The application of MCDM methods provides us with the opportunity to establish the best alternatives which reflect the best energy ecological parameters of the internal combustion engine.

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Performance and combustion characteristics of a compression ignition engine running on diesel-biodiesel-ethanol (DBE) blends – Part 2: Optimization of injection timing

Cited by 36 publications

References 41 publications

Modification of a Direct Injection Diesel Engine in Improving the Ignitability and Emissions of Diesel–Ethanol–Palm Oil Methyl Ester Blends

Modification of a Direct Injection Diesel Engine in Improving the Ignitability and Emissions of Diesel–Ethanol–Palm Oil Methyl Ester Blends

A Review of Early Injection Strategy in Premixed Combustion Engines

Internal Combustion Engine Analysis of Energy Ecological Parameters by Neutrosophic MULTIMOORA and SWARA Methods

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