Numerical simulation of a heavy-duty diesel engine to evaluate the effect of fuel injection duration on engine performance and emission

Kharkeshi, Behrad Alizadeh; Shafaghat, Rouzbeh; Mohebi, M.; Amiri, S. Talesh; Mehrabiyan, M.

doi:10.5829/ije.2021.34.11b.08

Cited by 6 publications

(5 citation statements)

References 26 publications

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“…𝑄 ̇+ ∑ 𝑚̇𝑖 ℎ 𝑖 = 𝑊 ̇+ ∑ 𝑚̇𝑒 ℎ 𝑒 [3] where ℎ is the specific enthalpy, fuel energy is calculated using Equation 3 (15,17).…”

Section: Thermodynamic Modeling Law Of Conservation Of Mass and Energymentioning

confidence: 99%

Effect of Diesel-engine Operating Conditions on Performance of Waste Heat Recovery Cycles: A 4E Analysis

Alizadeh Kharkeshi,

Shafaghat,

Talesh Amiri

et al. 2024

IJEE

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In waste heat recovery from a heavy-duty diesel engine, with a focus on engine speed's impact, is explored. The critical problem of enhancing energy efficiency and reducing emissions through waste heat utilization is addressed. Waste heat in internal combustion engines, vital for sustainable energy use and environmental preservation, is investigated. Experimental analysis and thermodynamic modeling introduce Organic Rankine Cycle (ORC), Steam Rankine Cycle (SRC), and Combined Steam and Organic Rankine Cycle (CSO) for waste heat recovery. A nonlinear relationship between engine speed and waste heat is identified. Waste heat increases up to 1600 rpm and decreases thereafter. The CSO cycle outperforms ORC and SRC cycles, achieving 43.4% higher efficiency. Fuel energy savings demonstrate CSO's superior economy, along with excellence in Annual Carbon Dioxide Emissions Reduction (ACO2ER). Waste heat recovery knowledge is advanced by introducing the efficient CSO cycle, contributing significantly to existing research.

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“…𝑄 ̇+ ∑ 𝑚̇𝑖 ℎ 𝑖 = 𝑊 ̇+ ∑ 𝑚̇𝑒 ℎ 𝑒 [3] where ℎ is the specific enthalpy, fuel energy is calculated using Equation 3 (15,17).…”

Section: Thermodynamic Modeling Law Of Conservation Of Mass and Energymentioning

confidence: 99%

Effect of Diesel-engine Operating Conditions on Performance of Waste Heat Recovery Cycles: A 4E Analysis

Alizadeh Kharkeshi,

Shafaghat,

Talesh Amiri

et al. 2024

IJEE

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“…(2) 𝑄 ̇+ ∑ 𝑚̇𝑖 ℎ 𝑖 = 𝑊 ̇+ ∑ 𝑚̇𝑒 ℎ 𝑒 where ℎ is the specific enthalpy, fuel energy is calculated using equation (3) [13,14].…”

Section: Law Of Conservation Of Mass and Energymentioning

confidence: 99%

Investigating a Combined Cooling, Heating and Power System from Energy and Exergy Point of View with RK-215 ICE Engine as a Prime Mover

Silakhor¹,

Jahanian²,

Kharkeshi³

2023

IJEE

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Using cogeneration systems is a great way to tackle fossil fuel consumption problems. This paper introduces a Combined Cooling Heating Power (CCHP) system to recover the waste heat of an RK215 heavy diesel engine as a prime mover. Therefore the CCHP system consists of Internal Combustion Engine (RK215), a heat storage tank, and an absorption chiller. Also, the system has been studied in four modes: CCHP, CHP, CCP, and single generation. The waste heat ratio has changed due to a y factor, and the effect of this different parameter, such as the start of fuel injection and exhaust gas heat, on the system's efficiency by considering first and second laws of thermodynamic in different operating modes has been investigated. The system's highest energy and exergy efficiency in CCHP mode is equal to 50.46 and 30.8%, respectively. According to the result, as the CCHPs cooling load to the absorption chiller increases, the performance also rises. Also, the system's carbon dioxide emissions reduction has been studied. The results showed that using different modes for waste heat recovery can reduce carbon dioxide by up to 30% approximately for different modes. Also, the fuel energy saving ratio (FESR) has been investigated, and the results showed that systems in CCHP, CHP, and CCP modes could have FESR approximately equal to 21%.

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“…Heavy diesel engines are used in power generation, commercial vehicles and ship propulsion (1). According to the United States EPA report in 2014, about eight billion metric tons of CO2, equivalent to 24% of total greenhouse gas (GHG) emissions, are produced by the transportation sector (2).…”

Section: Introductionmentioning

confidence: 99%

Performance of Heat Recovery Cycle in order to Enhance Efficiency and its Mutual Effect on the Engine Performance with the Aid of Thermodynamic Simulation

Radaei,

Shafaghat,

Talesh Amiri

et al. 2024

IJEE

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Considering that the heat required for the Waste heat recovery (WHR) cycle of the engine is provided from two parts of the exhaust gas and the cooling system, the mutual influence of the WHR cycle on the engine performance is undeniable. Therefore, in this numerical study, an attempt has been made to thermodynamically evaluate the effect of the implementation of the WHR cycle on the engine efficiency. For this purpose, the 16 cylinder MTU 4000 R43L heavy diesel engine was simulated and a comparison was made between numerical and experimental results. Finally, the SRC heat recovery cycle was designed and applied in the simulated model according to the desired limits and the temperature range of the engine operation. At low speed with the application of the WHR cycle, the output net power did not drop much, but at the maximum speed and power, a power loss of about 4% is observed. At 1130 rpm, the power did not increase much. At 1600 rpm, the power increase is reduced to about 2.3%. At 1800 rpm, due to the significant increase in exhaust gas temperature, the total power value increased by about 4%.

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Numerical simulation of a heavy-duty diesel engine to evaluate the effect of fuel injection duration on engine performance and emission

Cited by 6 publications

References 26 publications

Effect of Diesel-engine Operating Conditions on Performance of Waste Heat Recovery Cycles: A 4E Analysis

Effect of Diesel-engine Operating Conditions on Performance of Waste Heat Recovery Cycles: A 4E Analysis

Investigating a Combined Cooling, Heating and Power System from Energy and Exergy Point of View with RK-215 ICE Engine as a Prime Mover

Performance of Heat Recovery Cycle in order to Enhance Efficiency and its Mutual Effect on the Engine Performance with the Aid of Thermodynamic Simulation

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