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   Articles with "cycle cycle" as a keyword



Modeling cycle-to-cycle variations in spark ignited combustion engines by scale-resolving simulations for different engine speeds

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recommendations! Published in 2019 at "Applied Energy"

DOI: 10.1016/j.apenergy.2019.03.198

Abstract: Abstract Here, internal combustion engine operating speed effects on combustion cycle-to-cycle variations (CCV) are numerically investigated. The recent study by Ghaderi Masouleh et al. (2018) is extended to higher engine speeds including 560, 800 and… read more here.

Keywords: cycle; rpm; time; cycle cycle ... See more keywords

The extremal α-index of graphs with no 4-cycle and 5-cycle

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recommendations! Published in 2021 at "Linear Algebra and its Applications"

DOI: 10.1016/j.laa.2021.02.022

Abstract: Abstract Given any real α ∈ [ 0 , 1 ] , the α-index of a graph G is the largest eigenvalue λ α ( G ) of the matrix A α ( G )… read more here.

Keywords: cycle; graphs cycle; cycle cycle; extremal index ... See more keywords

Phase-averaged and cycle-to-cycle analysis of jet dynamics in a scaled up vocal-fold model

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recommendations! Published in 2021 at "Journal of Fluid Mechanics"

DOI: 10.1017/jfm.2021.365

Abstract: Abstract Phase-averaged and cycle-to-cycle analysis of key contributors to sound production in phonation is examined in a scaled-up vocal-fold model. Simultaneous temporally and spatially resolved pressure and velocity measurements permitted examination of each term in… read more here.

Keywords: cycle; model; cycle cycle; vocal fold ... See more keywords

Revisiting the Kepler non-Blazhko RR Lyrae sample: cycle-to-cyle variations and additional modes

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recommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stz833

Abstract: We analyzed the long and short cadence light curves of the Kepler non-Blazhko RRab stars. We prepared the Fourier spectra, the Fourier amplitude and phase variation functions, time-frequency representation, the O-C diagrams and their Fourier… read more here.

Keywords: non blazhko; cycle; additional modes; kepler non ... See more keywords

Large-Signal Stability Guarantees for Cycle-by-Cycle Controlled DC–DC Converters

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recommendations! Published in 2022 at "IEEE Control Systems Letters"

DOI: 10.1109/lcsys.2022.3225586

Abstract: Stability guarantees are critical for cycle-by-cycle controlled dc-dc converters in high performance applications including microprocessors and LiDAR. Traditional stability analysis on cycle-by-cycle dc-dc converters is incomplete because the inductor current ramps are considered fixed; however,… read more here.

Keywords: cycle; stability guarantees; cycle controlled; cycle cycle ... See more keywords

A Cycle by Cycle FSK Demodulator With High Sensitivity of 1% Frequency Modulation Index for Implantable Medical Devices

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recommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems I: Regular Papers"

DOI: 10.1109/tcsi.2022.3195306

Abstract: This paper presents a cycle by cycle Frequency Shift Keying (FSK) demodulator, able to demodulate a FSK signal with 1% frequency modulation index (MI), in a single cycle. Based on the proposed demodulation scheme, a… read more here.

Keywords: cycle; fsk demodulator; frequency; cycle cycle ... See more keywords

Next-Cycle Optimal Dilute Combustion Control via Online Learning of Cycle-to-Cycle Variability Using Kernel Density Estimators

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recommendations! Published in 2022 at "IEEE Transactions on Control Systems Technology"

DOI: 10.1109/tcst.2022.3149423

Abstract: Dilute combustion using exhaust gas recirculation (EGR) presents a cost-effective method for increasing the efficiency of spark-ignition (SI) engines. However, the maximum amount of EGR that can be used at a given condition is limited… read more here.

Keywords: cycle; online learning; cycle variability; combustion ... See more keywords

Modeling and Simulation of Correlated Cycle-to- Cycle Variability in the Current-Voltage Hysteresis Loops of RRAM Devices

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recommendations! Published in 2024 at "IEEE Transactions on Nanotechnology"

DOI: 10.1109/tnano.2024.3485213

Abstract: Resistive RAMs or memristors are nowadays considered serious candidates for the implementation of energy efficient and scalable neuromorphic computing systems. However, a major drawback of this technology is the instability of the device current-voltage (I-V)… read more here.

Keywords: rram devices; variability; cycle cycle; current voltage ... See more keywords

Adaptive Equivalent Consumption Minimization Strategy for Off-Road Hydraulic Hybrid Vehicles: A Cycle-to-Cycle Optimization Approach

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recommendations! Published in 2022 at "IEEE Transactions on Vehicular Technology"

DOI: 10.1109/tvt.2021.3136658

Abstract: The energy management strategy is the key factor for hybrid vehicles since it determines how efficiently the engine power is transferred to the wheels. As a local-optimal and implementable strategy, the equivalent consumption minimization strategy… read more here.

Keywords: equivalent consumption; cycle; strategy; consumption minimization ... See more keywords
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A hybrid method of tests coupled with simulations used to detect the working processes of an automotive engine from cycle to cycle in transient conditions

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recommendations! Published in 2017 at "Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering"

DOI: 10.1177/0954407016685627

Abstract: To improve the actual performance of an automotive engine, an approach consisting of dynamic signal measurements coupled with gas dynamics–thermodynamics process simulations is proposed; this is used to detect the working processes of an automotive… read more here.

Keywords: used detect; engine; transient conditions; cycle ... See more keywords

Toward quantification of the information content in flow variables under cycle-to-cycle variations

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recommendations! Published in 2025 at "International Journal of Engine Research"

DOI: 10.1177/14680874251326306

Abstract: Cycle-to-cycle variations (CCV) pose significant challenges to the performance and reliability of internal combustion engines (ICE). This study investigates the applicability of information entropy as a diagnostic tool to quantify and characterize CCV in ICE… read more here.

Keywords: information; cycle cycle; kinetic energy; turbulent kinetic ... See more keywords