Thermo-kinetic multi-zone modelling of low temperature combustion engines

Vasudev, Aneesh; Mikulski, Maciej; Balakrishnan, Praveen Ramanujam; Storm, Xiaoguo; Hunicz, Jacek

doi:10.1016/j.pecs.2022.100998

Cited by 25 publications

(12 citation statements)

References 134 publications

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“…The spatial and temporal distribution of combustion within the engine cylinder during the combustion process are portrayed by combustion zone mapping shown in the Figure 2. The simulation data for typical fuel (n-Heptane) was obtained from Aneesh et al [10] and presented here for conventional diesel combustion (CDC) and LTC sideby-side to enable comparison [10]. The greater fuel penetration with leaner mixture is seen for the CDC than LTC at entry/start of injection because combustion takes place at higher equivalence ratio.…”

Section: Rcci Combustion Reduces Heat Transfer (An In-cylinder Heat T...mentioning

confidence: 99%

Low-Temperature Combustion in Diesel Engines

Getachew,

Dejene

2023

Diesel Engines - Current Challenges and Future Perspectives

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The growing energy demand for transportation has led to a shift towards eco-friendly combustion or improved diesel engines with increased efficiency, reduced emissions, and sustainability. Low-temperature combustion (LTC) aims to achieve controlled combustion, balancing optimal performance with lower NOx and SO2 emissions. This chapter summarizes the recent trends in LTC strategies under further exploration such as fuel injection techniques, optimized air-fuel mixing, and accurate combustion phasing management, to discern existing literatures in extensive efforts to reduce flame stability and emissions. Subsequently, LTC faces challenges like stable ignition, precise control, and economical fuel choice. Liquefied biogas, methanol, bio-fuels, and thermo-physically enhanced biofuels are among the LTC diesel alternative fuels under investigation. Higher-octane fuels like biodiesels exhibited promising performance at low to medium loads, while natural gases and dual-fuel mode techniques seen promising choices for high-duty applications. Studies revealed that stakeholder collaboration could make cleaner fuel choices, meeting rigorous emissions rules while operating optimal LTC engines. Therefore, Future LTC research should focus on emission reduction, fuel flexibility, optimum performance at various working conditions, combustion stability, and accurate modeling and simulation.

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Section: Rcci Combustion Reduces Heat Transfer (An In-cylinder Heat T...mentioning

confidence: 99%

Low-Temperature Combustion in Diesel Engines

Getachew,

Dejene

2023

Diesel Engines - Current Challenges and Future Perspectives

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“…It indicated that reducing the rate of EGR will reduce the cylinder temperature and pressure rise significantly. Whereas, an increase in the EGR rate causes the extending the start of thermal ignition was observed (3) . Introducing the swirl motion in the inlet will help to enhance better homogeneous mixture formation, and it tends to reduce the NOx formation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of HCCI Combustion Fuelled with Gasoline + Methyl Tert-Butyl Ether Blend

Dadapeer¹,

Prakash²

2022

IJST

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Background: Homogeneously charged compression ignition (HCCI) engines are generally popular for low production of NOx and Soot formation, also consuming lower fuel as compared with conventional gasoline and diesel engine. Objectives: In this study, the compression ignition engine (CI) was simulated in HCCI mode fuelled with Gasoline and Methyl tert-butyl ether (MTBE) blends, and the analysis was carried out in similar operating conditions as experimentation carried out. Methods: The chamber pressure was maintained at 2 bar, and the air-fuel ratio was maintained at2.75. The optimal blend for MTBE was fixed as 15 vol % (MTBE 15), and the measured properties of the blends were used in the simulation. ICE simulation module in ANSYS WORKBENCH was used for this current simulation. Both cold flow and combustion simulations were carried out and the results indicate velocity indie the cylinder, cylinder pressure, and temperature distributions for two cases such as gasoline and gasoline with MTBE15. Findings: The average velocity was found high with the MTBE blend, whereas in-cylinder pressure was found low with MTBE blend than with gasoline. The temperature inside the cylinder pressure was found higher with gasoline than MTBE blend. The deviation between the experimentation and simulation was found low. Novelty: The simulation provides a better understanding of the combustion phenomena when gasoline is mixed with MTBE and utilized in a diesel engine at HCCI mode.

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“…Furthermore, they enable the evaluation of CO 2 emissions and identify means to reduce them because such emissions are determined by fuel elemental chemical composition and consumption. Typically, experimental studies of multi-zone MMs are applied to subsequent research stages to describe the physical process characteristics occurring in the cylinder in detail [16].…”

Section: Introductionmentioning

confidence: 99%

Development and Validation of Heat Release Characteristics Identification Method of Diesel Engine under Operating Conditions

Lebedevas

Žaglinskis

Drazdauskas

2023

JMSE

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The decarbonisation of maritime transport in connection with the European Union and International Maritime Organisation directives is mainly associated with renewable and low-carbon fuel use. For optimisation of energy indicators of ship power plants in operation on renewable and low-carbon fuel, it is rational to use numerical research methods. The purpose of this research is to devise methodological solutions for determining the heat release characteristics, m and φz parameters of Wiebe model that can be applied to mathematical models of diesel engines under operating conditions. Innovative solutions are proposed, which in contrast with the methods used in practice, are not related to experimental registration of combustion cycle parameters. These registration techniques were replaced by the proposed exhaust gas temperature or exhaust manifold surface temperature registration method. The acceptable accuracy of results validates the methodological solutions for solving practical tasks: according to the Wiebe model, the error of determining m and φz compared with experimental data does not exceed 3–4%. The proposed method was implemented by simulating the energy indicators of two diesel engines, car engine 1Z 1.9 TDI (Pe = 66 kW; n = 4000 RPM) and multipurpose 8V396TC4 (Pe = 380–600 kW; n = 1850 RPM), in a single-zone model. The variation in experimental data when the engines operated on both diesel and rapeseed methyl ester (a biodiesel fuel), was approximately 1%. The authors anticipate further development of completed solutions with their direct application to ship power plants in real operating conditions.

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Thermo-kinetic multi-zone modelling of low temperature combustion engines

Cited by 25 publications

References 134 publications

Low-Temperature Combustion in Diesel Engines

Low-Temperature Combustion in Diesel Engines

Numerical Simulation of HCCI Combustion Fuelled with Gasoline + Methyl Tert-Butyl Ether Blend

Development and Validation of Heat Release Characteristics Identification Method of Diesel Engine under Operating Conditions

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