Heat transfer effects on the performance of an air-standard irreversible dual cycle

Comprehensive performance analyses and optimization of the irreversible thermodynamic cycle engines (TCE) under maximum power (MP) and maximum power density (MPD) conditions

“…Zhu et al [65] parameters such as miller cycle ratio, pressure ratio, stroke ratio, cut-off ratio, exhaust temperature ratio, isentropic temperature ratio of the compression process, cycle temperature ratio and cycle pressure ratio on the performance and power density of the cycles have been analyzed and the optimal performance and design parameters under MP, MPD and MEF conditions are defined by considering the internal irreversibilities originating from the adiabatic compression and expansion processes. If the previous studies [1,4,5,15,[17][18][19][20][26][27][28][29][30]32,[34][35][36][40][41][42][43]46,47,[49][50][51]52,57] are investigated, it is seen that the characteristics of the performance curves are similar to presented study. Also a validation of theoretical model presented in this study has been provided comparing with a previous study [52].…”

“…Lin et al [3] carried out a performance optimization by considering the effects of heat loss through the engine cylinder wall on the performance of an internal combustion engine running with Dual Diesel cycle (DDC). Ust et al [4][5] examined the effects of the heat transfer loss on the work output and thermal efficiency of an air-standard irreversible OC [4] and DDC [5] with respect to combustion and heat transfer constants. Wu and Blank [6] studied on the effects of combustion on a work-optimized endoreversible OC and they [7] optimized the cycle for the power output and mean effective pressure.…”

Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles

“…With different performance criteria, i.e., MP and ME, Gonca et al [215] performed the performance optimization of an irreversible Dual-Miller cycle with the sole loss of IIL defined in [98], and investigated the influences of temperature ratio and pressure ratio on cycle performance. Considering HTL and IIL, Ust et al [216] optimized the performance of an irreversible Dual cycle based on MP, ME and MEP performance criteria and investigated the influences of CR, pressure ratio and the two losses on cycle performance. Based on ECOP, Gonca and Sahin [85] optimized the performance of an irreversible Dual-Atkinson cycle with HTL and IIL and investigated the influences of the two losses, CR, cut-off ratio and pressure ratio on cycle performance.…”

Determination of the optimum temperatures and mass ratios of steam injected into turbocharged internal combustion engines

“…[1][2][3][4][5][6][7] It is well known in the open literature that supercharge is used to increase specific effective power, improve performance and emissions. So many studies were carried out on supercharging systems.…”