Effect of Swirl and Injection Pressure on Performance and Emissions of JP-8 Fueled High Speed Single Cylinder Diesel Engine

Jayakumar, Chandrasekharan; Nargunde, Jagdish; Sinha, Anubhav; Henein, Naeim A.; Bryzik, Walter; Sattler, Eric

doi:10.1115/1.4003973

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…This is due to finer atomization, faster evaporation and reduced local rich combustion zone. 38 The results under the injection pressure of 80-100 MPa are consistent with the particles emission of JP-8 kerosene. 29 When JP-8 kerosene replaces diesel, there are more nucleation particles and fewer accumulation particles.…”

Section: Emission Characteristicssupporting

confidence: 74%

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Comparative study of ignition characteristics and engine performance of RP-3 kerosene and diesel under compression ignition condition

Wang

Zhang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part D:

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This paper aims to explore the spontaneous combustion characteristics and engine performance of kerosene under traditional compression ignition mode, providing a reference for further optimizing the performance of kerosene compression ignition engines and the application of advanced combustion mode. The ignition visualization tests of kerosene under marine and vehicle engine conditions are carried out, and the characteristics under 0.3 mm nozzle diameter are compared with that of diesel. Then, the engine performance of the two fuels under medium load and ultra-high injection pressures is compared. The experimental results show that the ignition and combustion characteristics of kerosene and diesel are very similar, indicating that kerosene has a strong universality in diesel engine application. The long ignition delay time of kerosene leads to its lagging combustion and heat release. Compared with diesel, kerosene has lower CO, particulate emissions and indicated thermal efficiency, while higher HC and NOx emissions. The emission characteristics of kerosene RP-3 are different from previous studies, especially under ultra-high injection pressure. The combustion process and engine emissions of kerosene may be optimized with advanced combustion models and strategies.

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Section: Emission Characteristicssupporting

confidence: 74%

“…This phenomenon leads to an increase in the unburned portion of mixture and more HC emissions. 38 According to above analysis, EGR strategy may optimize engine emission of kerosene.…”

Section: Emission Characteristicsmentioning

confidence: 99%

Comparative study of ignition characteristics and engine performance of RP-3 kerosene and diesel under compression ignition condition

Wang

Zhang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…On the other hand, when the engine is running at low speeds, the moving speed of the piston plunger of the fuel pump is reduced accordingly, resulting in a decrease in the injection pressure. This means that the atomization quality of the fuel injection action is reduced, which then negatively affects the combustion quality, leading to an increase in exhaust gas emissions [23][24][25]. In addition, since the engine is fueled by a cam-driven fuel injection system, the fuel injection duration is calculated according to the engine crank The increases in emission mass fractions can explained as the result of the increase in the injected fuel per working cycle when reducing the engine speed while maintaining the engine power.…”

Section: Effectiveness Of the Engine Speed Reduction Strategy On Exha...mentioning

confidence: 99%

Effectiveness of the Speed Reduction Strategy on Exhaust Emissions and Fuel Oil Consumption of a Marine Generator Engine for DC Grid Ships

Chien

Kim²,

Choi

et al. 2022

JMSE

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Recent developments in power electronics, energy storage systems, and renewable energy; increased market demands for more efficient and cleaner electric power to meet stricter environmental regulations; and development in gigawatt (GW)-class DC (direct current) transmission systems for transmission of greater power over longer distances than similar alternative current (AC) systems, have supported the development of the DC grid, making it a promising solution for both the onshore and offshore industries. This paper presents an experimental study on the effectiveness of an engine speed reduction strategy on exhaust gas emission and fuel consumption when applied to a 4-stroke generator engine equipped with a cam-driven plunger diesel injection system. The experiments were performed on an 8-cylinder V-type 4-stroke generator engine installed in the MASTC laboratory, which is the only demonstration testbed for the ship’s electric propulsion system in Korea. Experimental results showed that fuel consumption decreased, but emission mass fraction in exhaust gas increased when maintaining engine power while reducing engine speed. This study has shown economic benefits in reducing fuel consumption, but incurred penalties for the emission performance of 4-stroke generator engines equipped with cam-driven plunger diesel injection systems when applying the engine speed reduction strategy.

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“…Tumble and/or swirl are associated with more effective combustion, but increasing swirl above some threshold may lead to fuel sprays collision, increasing subsequently the local air/fuel ratio and, therefore, increasing soot emissions and fuel consumption (Jayakumar et al. 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Unravelling tumble and swirl in a unique water-analogue engine model

Vester

Nishio

Alfredsson

2018

J Vis

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The in-cylinder flow prior to combustion is considered to be one of the most important aspects controlling the combustion process in an engine. More specifically, the large-scale structures present in the cylinder, so-called tumble and swirl, before compression are believed to play a major role into the mixing and combustion processes. Their development during the intake stroke and their final strength depend mainly (but not only) on the inlet port design. In the present study, the turbulent large-scale structures during the intake stroke are investigated in a unique water-analogue engine where inlet ports and valve timings can easily be configured and tested. The flow field in the cylinder volume is reconstructed through multi-planar stereoscopic particle image velocimetry measurements which reveal a wealth of vortical structures during the stroke’s various phases. The aim of the present paper is to present and show results from a unique setup which can serve as a test bench for optimisation of inlet port designs to obtain a desired vortical pattern in the cylinder after the intake stroke is finished. This setup can simulate the intake stroke in a much more realistic way as compared to a through-flow setup with a fixed valve lift.Graphical Abstract Electronic supplementary materialThe online version of this article (10.1007/s12650-018-0485-3) contains supplementary material, which is available to authorized users.

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Effect of Swirl and Injection Pressure on Performance and Emissions of JP-8 Fueled High Speed Single Cylinder Diesel Engine

Cited by 6 publications

References 25 publications

Comparative study of ignition characteristics and engine performance of RP-3 kerosene and diesel under compression ignition condition

Comparative study of ignition characteristics and engine performance of RP-3 kerosene and diesel under compression ignition condition

Effectiveness of the Speed Reduction Strategy on Exhaust Emissions and Fuel Oil Consumption of a Marine Generator Engine for DC Grid Ships

Unravelling tumble and swirl in a unique water-analogue engine model

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