Detection of knock occurrence in a gas SI engine from a heat transfer analysis

Ollivier, Eric; Bellettre, Jérôme; Tazerout, Mohand; Roy, G.

doi:10.1016/j.enconman.2005.06.019

Cited by 41 publications

(14 citation statements)

References 14 publications

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“…Olivier et al [78] numerically examined 5 % water/Al 2 O 3 nanofluids. Results show that the use of the nanofluids leads to increased thermal signal variations by around 15% over water.…”

Section: Nanofluid In Detecting Knock Occurrence In a Gas Si Enginementioning

confidence: 99%

Mono Nanofluids: Review on Current Status, Challenges and Future Prospects

C¹,

Ndaliman²,

Ezedimbu³

et al. 2021

IJRIAS

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Advancement in the area of technology, industrial application demands effective, efficient and successful heat transfer application. Nanofluids are proven potential heat transfer fluids with heighten thermo physical properties and heat transfer performance. In this paper, a comprehensive review on the current status, applications and challenges associated with the use of nanofluids have been evaluated and presented in the study. Authors also critically examined and identified research gaps for further research directions. The comprehensive study and assessment are essential to be carried out to ensure maxima utilization of nanofluid as new and potential heat transfer fluid.

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“…Olivier et al [78] numerically examined 5 % water/Al 2 O 3 nanofluids. Results show that the use of the nanofluids leads to increased thermal signal variations by around 15% over water.…”

Section: Nanofluid In Detecting Knock Occurrence In a Gas Si Enginementioning

confidence: 99%

Mono Nanofluids: Review on Current Status, Challenges and Future Prospects

C¹,

Ndaliman²,

Ezedimbu³

et al. 2021

IJRIAS

View full text Add to dashboard Cite

show abstract

“…Many researchers have been attracted to investigate, either experimentally or numerically, the use of nanofluids as engine coolant [202][203][204][205][206][207][208]. They reported excellent enhancements in the thermal properties of nanofluids, such as EG-based nanofluids, compared to conventional coolants, e.g.…”

Section: Automobiles Applicationsmentioning

confidence: 99%

Experimental studies of nanofluid thermal conductivity enhancement and applications: A review

Tawfik

2017

Renewable and Sustainable Energy Reviews

297

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In many applications, there is a critical need for enhancing the poor thermal conductivity of conventional fluids in order to develop efficient heat transfer fluids. This requirement can be met through dispersing nanometric particles in a given base fluid such as water, ethylene glycol, oil or air. The resulting nanofluids enhanced thermal conductivity of the base fluids. In order to evaluate this enhancement, nanofluid thermal conductivity is required to be measured. Several methods and techniques are covered in the present contribution. In addition, enhancements recorded experimentally are reviewed and summarized. Different parameters affecting on such enhancement are covered, including: nanoparticle concentration, size, shape and thermal conductivity. In addition, base fluid type, nanofluid bulk temperature and dispersion techniques are also covered parameters. However, nanofluids have the potential to contribute in several practical applications including solar thermal, transportation, electronic cooling, medical, detergency and military applications. In the present work, a brief overview of evolution in the use of nanofluids in some applications has been presented. According to this contribution, there is a critical need for further fundamental and applications of nanofluids studies in order to understand the physical mechanisms of using nanofluids as well as explore different aspects of applications of nanofluids.

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“…Knock is an abnormal combustion in the cylinder of spark ignition (SI) engines. It is the result of autoignition of one part of the end gas because of the rise in temperature and pressure due to propagation of the primary flame front [26]. This phenomenon is very undesirable because it results in lower engine efficiency, an increase of some emissions and even leads to destruction of the engine under heavy knock operation.…”

Section: Study Purposes and Strategymentioning

confidence: 99%

Investigation on heat transfer evaluation for a more efficient two-zone combustion model in the case of natural gas SI engines

Lounici

Loubar

Balistrou

et al. 2011

Applied Thermal Engineering

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International audienceTwo-zone model is one of the most interesting engine simulation tools, especially for SI engines. However, the pertinence of the simulation depends on the accuracy of the heat transfer model. In fact, an important part of the fuel energy is transformed to heat loss from the chamber walls. Also, knock appearance is closely related to heat exchange. However, in the previous studies using two-zone models, many choices are made for heat transfer evaluation and no choice influence study has been carried out, in the literature. The current study aims to investigate the effect of the choice of both the heat transfer correlation and burned zone heat transfer area calculation method and provide an optimized choice for a more efficient two-zone thermodynamic model, in the case of natural gas SI engines. For this purpose, a computer simulation is developed. Experimental measurements are carried out for comparison and validation. The effect of correlation choice has been first studied. The most known correlations have been tested and compared. Our experimental pressure results, supported for more general and reliable conclusions, by a literature survey of many other studies, based on measured heat transfer rates for several SI engines, are used for correlation selection. It is found that Hohenberg's correlation is the best choice. However, the influence of the burned zone heat transfer area calculation method is negligible

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Detection of knock occurrence in a gas SI engine from a heat transfer analysis

Cited by 41 publications

References 14 publications

Mono Nanofluids: Review on Current Status, Challenges and Future Prospects

Mono Nanofluids: Review on Current Status, Challenges and Future Prospects

Experimental studies of nanofluid thermal conductivity enhancement and applications: A review

Investigation on heat transfer evaluation for a more efficient two-zone combustion model in the case of natural gas SI engines

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