Thermodynamic modeling of spark-ignition engine: Effect of temperature dependent specific heats

Abu‐Nada, Eiyad; Al‐Hinti, I.; Al–Sarkhi, A.; Akash, Bilal

doi:10.1016/j.icheatmasstransfer.2006.06.014

Cited by 81 publications

(52 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Refs. [89][90][91][92] advanced the SH model varied with temperature with nonlinear relation which was closer to practice:…”

Section: The Study Featuresmentioning

confidence: 89%

“…Considering HTL, FL and IIL and fixing the cycle maximum temperature, Ge et al [84,167] adopted the VSH model advanced in [89][90][91][92], investigated the optimum power and efficiency performance [84,167], as well as the optimum EF performance [84] of an irreversible Diesel cycle, and examined the influences of the three losses on cycle performance. Furthermore, Aithal [168,169] studied the influence of exhaust gas recycle on the power output and efficiency performance characteristics of an irreversible Diesel cycle when the SH of WF were nonlinear functions of the temperature.…”

Section: The Progress In Optimum Performance Studies For As Diesel Cyclementioning

confidence: 99%

“…Furthermore, Aithal [168,169] studied the influence of exhaust gas recycle on the power output and efficiency performance characteristics of an irreversible Diesel cycle when the SH of WF were nonlinear functions of the temperature. Considering IIL and fixing the cycle maximum temperature, Açıkkalp and Yamık [170] used the VSH model advanced in [89][90][91][92], optimized the maximum available work output of an irreversible Diesel cycle with CR and pressure ratio as optimization parameters, and derived the optimum CR and pressure ratio.…”

Section: The Progress In Optimum Performance Studies For As Diesel Cyclementioning

confidence: 99%

“…Based on efficient power criteria, Patodi and Maheshwari [178] studied the Atkinson cycle performance when SH of WF varied linearly with temperature and analyzed the effects of some design parameters (including maximum temperature ratio, maximum volume ratio and maximum pressure ratio) on cycle performance under MP, MPD and MEP conditions. Considering HTL, FL and IIL and fixing the cycle maximum temperature, Ge et al [84,184] adopted the VSH model advanced in [89][90][91][92], investigated the optimum power and efficiency performance [84,184], as well as the optimum EF performance [84] of an irreversible Atkinson cycle, and examined the influences of the three losses on cycle performance.…”

Section: The Progress In Optimum Performance Studies For As Atkinson mentioning

confidence: 99%

See 3 more Smart Citations

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

Chen

Sun

2016

Entropy

139

View full text Add to dashboard Cite

Abstract:On the basis of introducing the origin and development of finite time thermodynamics (FTT), this paper reviews the progress in FTT optimization for internal combustion engine (ICE) cycles from the following four aspects: the studies on the optimum performances of air standard endoreversible (with only the irreversibility of heat resistance) and irreversible ICE cycles, including Otto, Diesel, Atkinson, Brayton, Dual, Miller, Porous Medium and Universal cycles with constant specific heats, variable specific heats, and variable specific ratio of the conventional and quantum working fluids (WFs); the studies on the optimum piston motion (OPM) trajectories of ICE cycles, including Otto and Diesel cycles with Newtonian and other heat transfer laws; the studies on the performance limits of ICE cycles with non-uniform WF with Newtonian and other heat transfer laws; as well as the studies on the performance simulation of ICE cycles. In the studies, the optimization objectives include work, power, power density, efficiency, entropy generation rate, ecological function, and so on. The further direction for the studies is explored.

show abstract

“…Refs. [89][90][91][92] advanced the SH model varied with temperature with nonlinear relation which was closer to practice:…”

Section: The Study Featuresmentioning

confidence: 89%

Section: The Progress In Optimum Performance Studies For As Diesel Cyclementioning

confidence: 99%

Section: The Progress In Optimum Performance Studies For As Diesel Cyclementioning

confidence: 99%

Section: The Progress In Optimum Performance Studies For As Atkinson mentioning

confidence: 99%

See 2 more Smart Citations

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

Chen

Sun

2016

Entropy

139

View full text Add to dashboard Cite

show abstract

“…To calculate the specific heat terms we assume air as the working fluid, thereby allowing us to use the polynomial offered by Abu-Nada et al [18] for temperature dependant specific heats of the working fluid: …”

Section: Outline Of the Theoretical Modelmentioning

confidence: 99%

Validation of a Simulation Model for a Combined Otto and Stirling Cycle Power Plant

McGovern¹,

Cullen²,

Feidt

et al. 2010

ASME 2010 4th International Conference on Energy Sustainability, Volume 2

View full text Add to dashboard Cite

A project has been underway at the Dublin Institute of Technology (DIT) to investigate the feasibility of a combined Otto and Stirling cycle power plant in which a Stirling cycle engine would serve as a bottoming cycle for a stationary Otto cycle engine. This type of combined cycle plant is considered to have good potential for industrial use. This paper describes work by DIT and collaborators to validate a computer simulation model of the combined cycle plant. In investigating the feasibility of the type of combined cycle that is proposed there are a range of practical realities to be faced and addressed. Reliable performance data for the component engines are required over a wide range of operating conditions, but there are practical difficulties in accessing such data. A simulation model is required that is sufficiently detailed to represent all important performance aspects and that is capable of being validated. Thermodynamicists currently employ a diverse range of modeling, analysis and optimization techniques for the component engines and the combined cycle. These techniques include traditional component and process simulation, exergy analysis, entropy generation minimization, exergoeconomics, finite time thermodynamics and finite dimensional optimization thermodynamics methodology (FDOT). In the context outlined, the purpose of the present paper is to come up with a practical validation of a practical computer simulation model of the proposed combined Otto and Stirling Cycle Power Plant.

show abstract

Thermodynamic analysis of spark-ignition engine using a gas mixture model for the working fluid

Abu‐Nada

Al‐Hinti

Akash

et al. 2007

Int. J. Energy Res.

Self Cite

View full text Add to dashboard Cite

SUMMARYThis paper presents thermodynamic analysis of spark-ignition engine. A theoretical model of Otto cycle, with a working fluid consisting of various gas mixtures, has been implemented. It is compared to those which use air as the working fluid with variable temperature specific heats. A wide range of engine parameters were studied, such as equivalence ratio, engine speed, maximum and outlet temperatures, brake mean effective pressure, gas pressure, and cycle thermal efficiency. For example, for the air model, the maximum temperature, brake mean effective pressure (BMEP), and efficiency were about 3000 K, 15 bar, and 32%, respectively, at 5000 rpm and 1.2 equivalence ratio. On the other hand, by using the gas mixture model under the same conditions, the maximum temperature, BMEP, and efficiency were about 2500 K, 13.7 bar, and 29%. However, for the air model, at lower engine speeds of 2000 rpm and equivalence ratio of 0.8, the maximum temperature, BMEP, and efficiency were about 2000 K, 8.7 bar, and 28%, respectively. Also, by using the gas mixture model under these conditions, the maximum temperature, BMEP, and efficiency were about 1900 K, 8.4 bar, and 27%, i.e. with insignificant differences. Therefore, it is more realistic to use gas mixture in cycle analysis instead of merely assuming air to be the working fluid, especially at high engine speeds.

show abstract

Thermodynamic modeling of spark-ignition engine: Effect of temperature dependent specific heats

Cited by 81 publications

References 17 publications

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

Validation of a Simulation Model for a Combined Otto and Stirling Cycle Power Plant

Thermodynamic analysis of spark-ignition engine using a gas mixture model for the working fluid

Contact Info

Product

Resources

About