Effect of cooled EGR on modified light duty diesel engine for combustion, performance and emissions under high pressure split injection strategies

Edara, Gautam; Murthy, Y.V.V. Satyanarayana; Srinivas, Paleti; Nayar, Jayashri; Ramesh, M.

doi:10.1016/j.csite.2018.03.004

Cited by 41 publications

(7 citation statements)

References 21 publications

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“…Re‐use of exhaust flue gases with incoming fresh air lowers the oxygen content, resulting in incomplete combustion. Because of incomplete combustion, both the rate of combustion and the rate at which heat is released are low, this result corroborates previous findings 10,37 …”

Section: Resultssupporting

confidence: 92%

“…Because of incomplete combustion, both the rate of combustion and the rate at which heat is released are low, this result corroborates previous findings. 10,37 3.5 | Cumulative heat release rate (CHRR) Figure 8 shows the impact of the EGR flow rate on CHRR for B20 blends at 600 bar. Without EGR, the cumulative HRRs for DieselP10 and B20P30 at peak load were 1.29 and 1.37 kJ, respectively.…”

Section: In-cylinder Pressurementioning

confidence: 99%

“…9 This cutting-edge approach has proven promising in mitigating the environmental impact of such emissions. Gautam et al 10 examined the re-use of tailpipe gas combined with multiple fueling techniques in compression ignition (CI) engines using diesel fuel. Several experiments were conducted for pilot fueling rates of 10%, main fueling rates of 90%, EGR flow rates of 5% and 10%, and fueling pressures of 200, 230, 250, 300, and 350 bar.…”

Section: Introductionmentioning

confidence: 99%

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The combined effect of split fueling strategy and EGR on the combustion, performance, and emission characteristics of a CRDI biofuel engine

Fernandes,

Rajashekhar,

Dinesha

2024

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The current research investigates the impact of a split fueling strategy combined with several flow rates of exhaust gas recirculation (EGR) on the combustion and emission characteristics of a diesel engine running on B20 waste cooking oil (WCO) biodiesel. A four‐stroke single‐cylinder common rail direct injection engine was employed for experiments. It operates with a B20 blend of WCO biodiesel at 600 bar pressure for varying pilot fueling conditions of 10%, 20%, and 30%. The B20 blend with 30% pilot fuel injection (B20P30) showed excellent performance and emission characteristics compared with B20 blend with 10% pilot fuel injection (B20P10) and B20 with 20% pilot fuel injection (B20P20). However, B20P30 had greater levels of nitrogen oxide (NOx) emissions than those by diesel. EGR discharge levels in 5% increments, ranging from 0% to 15% were introduced to address this issue. The experimental findings revealed that both cylinder peak pressure and heat release rate showed a reduction when the EGR flow rate was enhanced. The recirculation of exhaust gas into the combustion chamber led to a slight increase in the emission levels of hydrocarbon (HC), carbon monoxide (CO), and smoke, as well as a decrease in carbon dioxide (CO2). Nevertheless, the introduction of EGR significantly decreased NOx emissions by 22.94%, 35.05%, and 47.96% for EGR flow rates of 5%, 10%, and 15%, respectively, when compared with the engine operating without EGR. Overall, the two‐stage fueling strategy, B20P30 blended with 10% EGR corroborated to be beneficial in reducing NOx emissions with minimal performance penalties. Although there was a slight uptick in certain emissions, the overall trade‐off between emission reduction and performance was favorable. The culmination of this study is targeting the objectives of sustainable development goal 7 (clean energy) and goal 13 (climate action) to be achieved by 2030.

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Section: Resultssupporting

confidence: 92%

Section: In-cylinder Pressurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The combined effect of split fueling strategy and EGR on the combustion, performance, and emission characteristics of a CRDI biofuel engine

Fernandes,

Rajashekhar,

Dinesha

2024

Heat Trans

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“…Peningkatan daya mesin tertinggi terjadi pada penggunaan sistem Hot EGR dengan peningkatan rata-rata 0,9% pada setiap variasi campuran bahan bakar dibanding tanpa sistem EGR. Peningkatan daya ini disebabkan sirkulasi gas buang oleh EGR memberikan efek ignition delay pada proses pembakaran [16]. Salain itu, EGR mensirkulasikan bahan bakar yang tidak terbakar kembali ke ruang bakar untuk membantu proses pembakaran selanjutnya [9].…”

Section: Hasil Dan Pembahasan a Torsi Mesinunclassified

Pengaruh Diethyl Ether pada Mesin Diesel Berbahan Bakar Diesel dan Jatropa dengan sistem EGR terhadap Torsi Dan Daya Mesin

Fatkhurrozak

2018

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Mesin diesel banyak digunakan karena memiliki efisiensi termal yang tinggi dibanding mesin bensin. Hal ini mengakibatkan penggunaan bahan bakar fosil meningkat sehingga bahan bakar fosil mengalami kelangkaan. Jatropa banyak digunakan sebagai bahan bakar diesel alternatif. Namun, penggunaan jatropa menurunkan performa mesin diesel karena viskositasnya yang tinggi. Oleh karena itu, diethyl ether dipilih sebagai aditif bahan bakar diesel yang berpotensi memperbaiki performa mesin akibat efek negatif jatropa. Penelitian ini bertujuan untuk mengobservasi efek penambahan diethyl ether pada campuran bahan bakar diesel dan jatropa terhadap torsi dan daya mesin diesel. Penelitian ini menggunakan mesin diesel injeksi langsung yang dilengkapi sistem EGR. Bahan bakat yang digunakan yaitu diseel dan jatropa yang dicampur diethyl ether dengan prosentase 5%, 10%, 15% dari total volume bahan bakar. Hasil pengujian menunjukan bahwa penambahan diethyl ether pada campuran bahan bakar diesel dan jatropa meningkatkan torsi dan daya mesin akan tetapi lebih rendah dari diesel murni. Hal ini disebebkan oleh tingginya cetan number dan kandungan oksigen pada diethyl ether sehingga proses pembakaran dalam ruang silinder lebih sempurna. Penggunaan hot EGR terbukti meningkatkan performa mesin diesel. Peningkatan torsi dan daya mesin masing-masing 0,9% pada setiap variasi campuran bahan bakar.

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“…Regarding vehicles and means of transport in operation, it seems preferable, instead of implementing new construction solutions, to introduce fuels that have a significantly smaller impact on the environment than diesel [1,8,9]. The most commonly used fuels are methyl esters of higher fatty acids of various origins [10].…”

Section: Introductionmentioning

confidence: 99%

The impact of selected biofuels on the performance parameters of the Common Rail power system in the utility engine

2018

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The aim of the research was to determine the impact of biofuels from waste materials of plant and animal origin on the parameters of the common rail power supply system in the utility engine. The tests included identification of power system operation parameters in the whole load range of the tested engine, taking into account the limit and diagnostic parameters of the injectors operation. Then, for certain parameters, the engine injectors were tested on the test bench: injection pressure in the range of 25-135 MPa, injection time in the range of 200-1600 μs. In the tests, as reference fuel for testing injectors were used diesel fuel and three types of methyl esters of higher fatty acids: vegetable, animal and WCO origin. The measurements for individual fuels were made in the operating temperature range 30-60°C. The tests have shown significant changes in the volume of the fuel injection rates depending on the fuel used. Particularly, visible changes concerned the power system operation parameters for high engine speeds and the maximum working pressure of the common rail system in the engine.

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Effect of cooled EGR on modified light duty diesel engine for combustion, performance and emissions under high pressure split injection strategies

Cited by 41 publications

References 21 publications

The combined effect of split fueling strategy and EGR on the combustion, performance, and emission characteristics of a CRDI biofuel engine

The combined effect of split fueling strategy and EGR on the combustion, performance, and emission characteristics of a CRDI biofuel engine

Pengaruh Diethyl Ether pada Mesin Diesel Berbahan Bakar Diesel dan Jatropa dengan sistem EGR terhadap Torsi Dan Daya Mesin

The impact of selected biofuels on the performance parameters of the Common Rail power system in the utility engine

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