Numerical Investigation of Ducted Fuel Injection Strategy for Soot Reduction in Compression Ignition Engine

Şener, Ramazan

doi:10.47176/jafm.15.02.33088

Cited by 3 publications

(1 citation statement)

References 51 publications

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“…Consequently in this work, they found that the combustion process of diesel was delayed with methane and after the combustion was completed, methane could not participate in the combustion reaction by accumulating in the piston ring gaps, piston crown and near the cylinder liner. Sener (2022) analyzed the influences of the grooved injection method on CI engine pollutant emission and combustion characteristics in a numerical study.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Effects of Fuel Injection Duration and Spray Angle on the Combustion Process in a Compression Ignition Engine

Balaban,

Halis,

Yücesu

2024

Gazi University Journal of Science Part A: Engineering and Innovation

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The changes in injection strategies for diesel engines have a major impact on the performance and pollutant emission characteristics of diesel engines. If injection strategies like injection duration, injection timing, injection pressure and spray angle are properly adjusted, combustion can be improved. The engine performance will increase and emissions will decrease with the combustion improvement. In this work, the influences of injection duration and spray angle on the combustion characteristics of single cylinder, natural aspirated, electronically controlled injection, compression ignition engine were investigated. In the first stage of the work, experiments were executed on a single cylinder CI engine using a Cussons P8160 DC dynamometer. After the experiments, the piston bowl geometry of the engine was modeled and numerical simulation studies were achieved at 7 different injection durations and 7 different spray angles using Converge CFD software. As a result of this study, it was observed that there is a good match between experimental and simulation data of heat release rate (HRR) and in-cylinder pressure. In-cylinder pressure decreased with longer injection duration. The highest max. in-cylinder pressure was roughly 101.0 bar at 4°CA injection duration and the lowest max. in-cylinder pressure was roughly 82.0 bar at 10°CA injection duration. When the HRR data were analyzed, it was seen that as the injection duration increased, the amount of heat released by combustion decreased. When examining the results of the spray angle analysis, it was concluded that there were not very large differences in-cylinder pressure and HRR data, and there was a difference of 1.4 bar between the highest and lowest max. in-cylinder pressure values. In addition, the highest in-cylinder pressure of approximately 86.7 bar was obtained at a spray angle of 77°. It was observed that the CA50 value was obtained at angles closer to the top dead center by increasing the spray angle and decreasing the injection duration. Moreover, the longest combustion durations were realized at 60° spray angle and 10°CA injection duration.

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Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Effects of Fuel Injection Duration and Spray Angle on the Combustion Process in a Compression Ignition Engine

Balaban,

Halis,

Yücesu

2024

Gazi University Journal of Science Part A: Engineering and Innovation

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Numerical Investigation of the Effect of Piston Geometry on the Performance of a Ducted Fuel Injection Engine

Shakeel,

Liu,

Nyrenstedt

et al. 2024

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">Ducted Fuel Injection (DFI) engines have emerged as a promising technology in the pursuit of a clean, efficient, and controllable combustion process. This article aims at elucidating the effect of piston geometry on the engine performance and emissions of a metal DFI engine. Three different types of pistons were investigated and the main piston design features including the piston bowl diameter, piston bowl floor angle, and the injection nozzle angle were examined. To achieve the target, computational fluid dynamics (CFD) simulations were conducted coupled to a reduced chemical kinetics mechanism. Extensive validations were performed against the measured data from a conventional diesel engine. To calibrate the soot model, genetic algorithm and machine learning methods were utilized. The simulation results highlight the pivotal role played by piston bowl diameter and fuel injection angle in controlling soot emissions of a DFI engine. An increase in piston bowl diameter increases the room for flame penetration, promoting fuel-air mixing and subsequently reducing soot formation. The study highlights how DFI engines can benefit from piston shapes that are different than those of conventional diesel engines. Optimized piston geometries have been identified that not only minimize soot emissions but also enhance overall engine performance. These findings are crucial in the context of meeting stringent emissions regulations while maintaining or improving fuel economy, a critical objective for engine manufacturers. The proposed optimized piston geometries represent a promising avenue for enhancing the environmental and economic sustainability of DFI engines, paving the way for cleaner and more fuel-efficient engines in the future.</div></div>

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Biyogaz Yakıtlı Reaktivite Kontrollü Sıkıştırma Ateşlemeli Bir Motorun NSGA-II Algoritmasıyla Optimizasyonu

ÇELİK,

ŞENER

2023

Mühendis Ve Makina

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Reaktivite kontrollü sıkıştırma ateşlemeli (RCCI) motorlar, yüksek verime ve düşük emisyon değerlerine sahip olan yenilikçi bir yöntemdir. RCCI motorlarda, diğer içten yanmalı motorlardan farklı olarak hem emme hattına hem de silindir içine enjekte edilen farklı reaktivite dereceli yakıtlarla yanma kontrol altına alınabilmektedir. Bu çalışmada, yenilenebilir bir kaynak olarak biyogazın, RCCI bir motorda yakıt olarak kullanılma potansiyeli araştırılmıştır. Düşük reaktiviteli yakıt olarak emme hattına biyogaz enjeksiyonunun etkileri değerlendirilmiştir. Biyogaz yakıtlı bir RCCI motorun deneysel olarak doğrulanmış sanki-boyutlu modellemesi gerçekleştirilmiştir. Test motoru, farklı çalışma parametreleri için, biyogaz kullanıma uygunluğu araştırılmış ve optimum parametreler belirlenmiştir. Biyogazın lambda sayısı, motor devri, sıkıştırma oranı, emme basıncı ve supap zamanlamalarına göre yanma ve motor performansına etkileri incelenmiştir. Yapılan çalışmalar sonucunda, sanki-boyutlu (QD) motor modeli ve NSGA-II yöntemi kullanılarak optimum değerler tespit edilmiştir. Elde edilen değerlerle RCCI motor, minimum özgül yakıt tüketimi (ÖYT) ve maksimum verim ile çalışabileceği belirlenmiştir.

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Numerical Investigation of Ducted Fuel Injection Strategy for Soot Reduction in Compression Ignition Engine

Cited by 3 publications

References 51 publications

Numerical Analysis of the Effects of Fuel Injection Duration and Spray Angle on the Combustion Process in a Compression Ignition Engine

Numerical Analysis of the Effects of Fuel Injection Duration and Spray Angle on the Combustion Process in a Compression Ignition Engine

Numerical Investigation of the Effect of Piston Geometry on the Performance of a Ducted Fuel Injection Engine

Biyogaz Yakıtlı Reaktivite Kontrollü Sıkıştırma Ateşlemeli Bir Motorun NSGA-II Algoritmasıyla Optimizasyonu

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