Optimization of the power, efficiency and ecological function for an air-standard irreversible Dual-Miller cycle

Wu, Zhixiang; Chen, Lingen; Ge, Yanlin; Sun, Fengrui

doi:10.1007/s11708-018-0557-z

Cited by 6 publications

(1 citation statement)

References 56 publications

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“…Gonca and Sahin [ 93 ] considered finite rate of HT, HL and internal irreversibilities to analyze and optimize

of irreversible ICE cycles, such as Dual-Diesel cycle (DDC), OMC and DMC. Wu et al [ 94 , 95 , 96 ] established air-standard irreversible DMC models with constant specific heat [ 94 ], linear variable specific heat ratio [ 95 ] and nonlinear variable specific heat ratio [ 95 ] of working fluid, respectively, analyzed and optimized

and

of the cycles. You et al [ 97 ] replaced the two reversible adiabatic processes of the DMC with two polytropic processes, studied

and

of the cycle.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Optimization for an Endoreversible Dual-Miller Cycle (DMC) with Finite Speed of Piston

Chen

2018

Entropy

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Power output (P), thermal efficiency (η) and ecological function (E) characteristics of an endoreversible Dual-Miller cycle (DMC) with finite speed of the piston and finite rate of heat transfer are investigated by applying finite time thermodynamic (FTT) theory. The parameter expressions of the non-dimensional power output (P), η and non-dimensional ecological function (E) are derived. The relationships between P and cut-off ratio (ρ), between P and η, as well as between E and ρ are demonstrated. The influences of ρ and piston speeds in different processes on P, η and E are investigated. The results show that P and E first increase and then start to decrease with increasing ρ. The optimal cut-off ratio ρ opt will increase if piston speeds increase in heat addition processes and heat rejection processes. As piston speeds in different processes increase, the maximum values of P and E increase. The results include the performance characteristics of various simplified cycles of DMC, such as Otto cycle, Diesel cycle, Dual cycle, Otto-Atkinson cycle, Diesel-Atkinson cycle, Dual-Atkinson cycle, Otto-Miller cycle and Diesel-Miller cycle. Comparing performance characteristics of the DMC with different optimization objectives, when choosing E as optimization objective, η improves 26.4% compared to choosing P as optimization objective, while P improves 74.3% compared to choosing η as optimization objective. Thus, optimizing E is the best compromise between optimizing P and optimizing η. The results obtained can provide theoretical guidance to design practical DMC engines.

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“…Gonca and Sahin [ 93 ] considered finite rate of HT, HL and internal irreversibilities to analyze and optimize

and

of the cycles. You et al [ 97 ] replaced the two reversible adiabatic processes of the DMC with two polytropic processes, studied

and

of the cycle.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Optimization for an Endoreversible Dual-Miller Cycle (DMC) with Finite Speed of Piston

Chen

2018

Entropy

Self Cite

View full text Add to dashboard Cite

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Improvement of Environmental Characteristics of Diesel Locomotive Engine with Turbocharging by Changing Valve Timing (Based on Miller Cycle)

Plotnikov

Bernasconi

Jacoby

2019

Lecture Notes in Mechanical Engineering

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A new comparative study on performance of engine cycles under maximum thermal efficiency condition

Ebrahimi

2021

Energy Reports

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Optimization of the power, efficiency and ecological function for an air-standard irreversible Dual-Miller cycle

Cited by 6 publications

References 56 publications

Thermodynamic Optimization for an Endoreversible Dual-Miller Cycle (DMC) with Finite Speed of Piston

Thermodynamic Optimization for an Endoreversible Dual-Miller Cycle (DMC) with Finite Speed of Piston

Improvement of Environmental Characteristics of Diesel Locomotive Engine with Turbocharging by Changing Valve Timing (Based on Miller Cycle)

A new comparative study on performance of engine cycles under maximum thermal efficiency condition

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