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Application of enhanced combustion strategies and optimized ignition timing for achieving high thermal efficiency and low N2O emissions of marine ammonia engine at full-load condition Int. J. Engine Res. (IF 2.5) Pub Date : 2024-04-16 Yuanxin Gao, Yongming Feng, Xuefei Wu, Yuanqing Zhu, Tong Wang, Jinbo Qu, Junting Liu
To meet the requirement of reducing greenhouse gas (GHG) emissions, the application of carbon-free fuel ammonia in marine engines has gained importance. However, the use of ammonia as fuel leads to low thermal efficiency and high emissions of pollutants in engines. Increasing the rate of combustion of the fuel mixture in the engine helps to solve this problem. Therefore, the influence of hydrogen volume
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Coupling analysis of cylinder block for two-stroke aviation piston engine Int. J. Engine Res. (IF 2.5) Pub Date : 2024-04-16 Zhongjian Pan, Qinghua He, Yi Li, Lei Guo
The aluminum alloy block is a component of aircraft piston engine, and it is prone to fatigue cracks when working in a thermal mechanical coupling state for a long time. Establish a GT-POWER simulation model for a certain type of engine, verify the accuracy of the model, obtain boundary parameters such as temperature and pressure of the engine block under harsh operating conditions through the model
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Investigation of the effect of injection rate shaping on combustion and emissions in heavy-duty diesel engine under steady and transient conditions Int. J. Engine Res. (IF 2.5) Pub Date : 2024-04-15 Haibo Sun, Zunqing Zheng, Jincheng Li, Gang Li, Xiaohui Wang, Mingfa Yao
The fuel injection rate (ROI) is a crucial factor that affects the combustion and emissions of diesel engines. This study focuses on the injection pressure in a common rail system, which is divided into a high-pressure section and a low-pressure section. A control-oriented ROI shaping (ROIs) model is developed based on the switching strategy between high and low injection pressure. Three types of ROI
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Practical low-temperature gasoline combustion for very high efficiency off-road, medium- and heavy-duty engines Int. J. Engine Res. (IF 2.5) Pub Date : 2024-04-15 John E Dec, Dario Lopez Pintor, Ram Vijayagopal
Low-temperature gasoline combustion (LTGC) with additive-mixing fuel injection (AMFI) is a new combustion strategy that has been demonstrated to deliver 9%–25% better brake thermal efficiency than similar-sized market-leading diesel engines over the operating map. Moreover, the LTGC-AMFI engine shows near-zero smoke, and NOx emissions are 4–100 times lower than those of a diesel, sufficiently low that
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Spray formation and spray-wall-flow interaction in a gasoline direct-injection (GDI) engine under early-injection conditions: A flow bench study Int. J. Engine Res. (IF 2.5) Pub Date : 2024-04-12 Hao-Pin Lien, Cooper Welch, Yongxiang Li, Andrea Pati, Max Hasenzahl, Amsini Sadiki, Benjamin Böhm, Christian Hasse
The work presented in this study aims to understand the spray-wall-flow interaction within a gasoline direct-injection (GDI) engine flow bench under simulated early-injection conditions. The Engine Combustion Network (ECN) Spray G injector is installed in the Darmstadt optically accessible engine flow bench. Under simulated early-injection conditions, the formation of a multi-hole spray and the interaction
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Optical study on a heavy-duty natural gas dual-fuel engine applying POMDME as pilot fuel Int. J. Engine Res. (IF 2.5) Pub Date : 2024-04-11 Markus Mühlthaler, Maximilian Prager, Malte Jaensch
In this study, a fully optically accessible single-cylinder research engine is the basis for the visualization and generation of extensive knowledge about the in-cylinder processes of mixture formation, ignition, and combustion of alternative fuels for the dual-fuel combustion process. POMDME substitutes the fossil pilot fuel as a drop-in, non-sooting alternative to widely eliminate the NOx-PM tradeoff
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Methods and metrics to assess the accuracy of heat flux data from a spark ignition IC engine Int. J. Engine Res. (IF 2.5) Pub Date : 2024-04-09 Siddharth Gopujkar, Richard Davis, Jeremy Worm, William Hansley, Joel Duncan
The measurement of in-cylinder heat transfer can be a valuable diagnostic tool for quantifying and improving IC engine performance. Increased heat transfer out of the combustion chamber negatively impacts overall efficiency, while heat transfer from the metal to the charge can increase knock propensity. The heat flux at various locations in an engine cylinder can be measured using heat flux probes
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Numerical modeling of combustion in gas engines with prechamber ignition Int. J. Engine Res. (IF 2.5) Pub Date : 2024-04-06 Hoang Dung Nguyen, Kalyan Kuppa, Sabine Dohrmann, Benjamin Korb, Friedrich Dinkelacker
A numerical model is developed to predict the combustion processes in large-bore gas engines featuring prechamber ignition systems and being coupled with Computational Fluid Dynamics (CFD). The proposed combustion model is based on the simultaneous modeling of premixed and partially-premixed flames by an extended progress variable approach. By introducing an additional fuel scalar to track the externally
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LQTI boost pressure and EGR rate control of a diesel air charge system with eBoost assistance Int. J. Engine Res. (IF 2.5) Pub Date : 2024-04-06 Corey Gamache, Michiel Van Nieuwstadt, Jason Martz, Guoming Zhu
Turbocharged diesel engines often suffer significant response delay due to so-called turbo-lag, especially engines with large displacement. For this reason, many technologies have been developed to reduce turbo-lag. This paper develops a coordinated control strategy for a diesel engine equipped with an eBoost (electrical compressor) system to significantly reduce turbo-lag. A multiple-input and multiple-output
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A novel marine turbocharger compressor volume flow rate model based on stagnation enthalpy theory Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-28 Yuanyuan Tang, Yu Xia, Jundong Zhang, Baozhu Jia, Wenwei Liang
The compressor volume flow rate model determines the mass flowing into the diesel engine in simulation. It is a key component model that affects the accuracy of the overall performance of the diesel engine. At present, there is a lack of an accurate and easy-to-use compressor volume flow rate model. To solve this, the stagnation enthalpy-based compressor volume flow rate model (SP model) is proposed
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Towards carbon-free mobility: The feasibility of hydrogen and ammonia as zero carbon fuels in spark ignition light-duty vehicles Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-27 Ducduy Nguyen, James WG Turner
Global warming is a major environmental issue caused by the release of greenhouse gases, such as carbon dioxide into the atmosphere. Light-duty vehicles (LDVs) including passenger cars and light-duty trucks, are a significant contributor to greenhouse gas emissions. The transportation sector is responsible for approximately 23% of global CO2 emissions, with LDVs accounting for a substantial portion
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Research on Scavenging Flow Dynamics of Marine Two-Stroke Engines With a CFD-Derived Quasi-Dimensional Model Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-27 Xiao Han, Dai Liu, Long Liu, Shiyi Fu
The complex in-cylinder gas state and flow significantly affect fuel-air mixture, combustion efficiency and emissions. However, the scavenging CFD model of large bore marine engines in digital twin system requires substantial computational resources. Therefore, a fast-run phenomenological model of the scavenging process is built in this study. The model simulates the thermal states and flow dynamics
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Combustion characteristics optimization and thermal efficiency enhancement by stratified charge of hydrogen direct injection for argon power cycle hydrogen engine Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-26 Weiqi Ding, Renjie Deng, Jun Deng, Chenxu Wang, Liguang Li
Argon power cycle hydrogen engine is a novel approach to increasing the thermal efficiency of hydrogen engines while achieving zero CO2 emissions. This paper presents a combination of experiments and simulations used to examine the effects of hydrogen direct injection on the combustion characteristics and thermal efficiency of argon power cycle engines. The results of the study indicate that, in comparison
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Effect of flow area ratio of scrolls to turbine on matching of exhaust pulse energy distribution of an asymmetric twin-scroll turbocharging heavy-duty diesel engine Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-20 Jianjiao Jin, Qiusheng Ru, Chenyun Zhang
The operation mode of an asymmetric twin-scroll turbine is significantly different from that of a steady state under exhaust pulse feeding conditions, which leads to a more complex matching between a turbine with an engine. In this paper, It was first studied that the matching effect of the flow area ratio of asymmetric twin-scroll to turbine wheel on the pulse energy distribution of asymmetric twin-scroll
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Simulation study on the cavitation distribution in the ball valve of a common rail injector Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-16 Jianhui Zhao, Shuo Chen, Guichun Yang, Heng Zhang
A transient-state numerical simulation is conducted to investigate the cavitation flow in the ball valve of a common rail (CR) injector. The computational fluid dynamics (CFD) software, employing the RANS turbulence model, is employed for this purpose. The study aims to analyze the characteristics and underlying causes of the uneven distribution of cavitation in the ball valve. The results reveal a
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Influence of initial electric arc root position on electric arc behavior with spark plugs in large lean burn spark ignited gas engines Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-11 Anton Tilz, Constantin Kiesling, Gerhard Pirker, Andreas Wimmer
Increasing efficiency while reducing emissions leads to high mean effective pressures, high compression ratios and increasingly lean operation for spark ignited large gas engines. Despite these boundary conditions, gas engines must be operated between knocking and misfiring at low cycle-to-cycle fluctuations. The excess air ratio and the ignition process of the lean mixture greatly influence the stability
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Experimental and numerical approach to assess the dynamic performance of an inductive ignition system Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-05 Mauricio Monroy Jaramillo, Juan David Ramírez Alzate, Carlos Alberto Romero Piedrahita, Juan Camilo Mejía Hernández
This paper envisages studying the features of a conventional inductive ignition system along with its MOSFET and IGBT-based transistorized modifications. The influence of mechanical contact breaker dynamics and ignition coil characteristics on the current and voltage waveforms of the primary and secondary circuits of these studied ignition systems are mathematically and experimentally exposed. The
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Effects of wall cavity and fuel injection pressure on the performance of a non-reacting supersonic combustor Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-05 Mahbub Talukder, Abu Mahian, Sarfaraz Aziz, Mohammad Ali
This study numerically investigates the flow field of a non-reacting cavity-configured scramjet (Supersonic Combustion Ramjet) combustor at various fuel injection pressures by solving the 2D Reynolds-Averaged Navier-Stokes (RANS) equations, species transport equations, and Menter SST k-ω model. The aim of this research is to reveal the effects of wall cavity insertion and fuel injection pressure (FIP)
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Modeling of primary breakup considering turbulent nozzle flow, internal turbulence and surface instability of liquid jet using turbulence decay theory Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-04 Dai Matsuda, Ippei Kimura, Eriko Matsumura, Jiro Senda
In heat engines utilizing fuel injection, the processes of atomization and spray formation have a significant impact on the combustion process, thereby determining both efficiency and emission characteristics. Accurate prediction and control of spray formation in fuel injection systems play a key role in improving the efficiency and environmental performance of thermal engines, especially with the
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Numerical modelling and non-dimensional analysis of a diesel oxidation catalyst with focus on NO2 reduction Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-04 Abhishek Suman, Nikhil Dilip Khedkar, Asish Kumar Sarangi, Jose Martin Herreros
A diesel oxidation catalyst (DOC) is widely used to oxidize partial combustion by-products, such as unburned hydrocarbons and carbon monoxide (CO), and nitric oxide (NO) from compression ignition (CI) engines. Numerical modelling of the DOC, reported in the literature, often does not predict the performance of the DOC accurately over a wide range of engine operating conditions because only a few chemical
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Automatic smooth map generation of internal combustion engines via local-global model based calibration technique Int. J. Engine Res. (IF 2.5) Pub Date : 2024-03-01 Samaneh Soltanalizadeh, Vahid Esfahanian, Mohammad Reza Haeri Yazdi, Mohammad Nejat
The addition of new sensors and actuators to the engine, to reduce fuel consumption and emissions besides improving the engine operation, complicates the control commands stored in the engine control unit (ECU). Substitution of mechanical actuators with electronic ones increases the engine’s degrees of freedom and the number of control parameters, which results in the increased engine calibration time
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Nonlinear feedforward controller design of gasoline engine air-path system for reducing engine torque overshoot Int. J. Engine Res. (IF 2.5) Pub Date : 2024-02-24 Tatsuya Shiraishi, Mitsuo Hirata, Masayasu Suzuki
In gasoline engines, the amount of fresh air in the cylinder becomes temporarily excessive owing to the slow response in exhaust gas recirculation (EGR) gas under a high EGR ratio. This phenomenon should be avoided, as it causes an engine torque overshoot because the amount of fuel also increases to follow the stoichiometric ratio, and can cause discomfort to the driver. In this study, we investigate
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A misfire-integrated Gaussian process (MInt-GP) emulator for energy-assisted compression ignition (EACI) engines with varying cetane number jet fuels Int. J. Engine Res. (IF 2.5) Pub Date : 2024-02-23 Sai Ranjeet Narayanan, Yi Ji, Harsh Darshan Sapra, Chol-Bum Mike Kweon, Kenneth S Kim, Zongxuan Sun, Sage Kokjohn, Simon Mak, Suo Yang
For energy-assisted compression ignition (EACI) engine propulsion at high-altitude operating conditions using sustainable jet fuels with varying cetane numbers, it is essential to develop an efficient engine control system for robust and optimal operation. Control systems are typically trained using experimental data, which can be costly and time consuming to generate due to setup time of experiments
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In-cylinder spray evolution in a motored central-injection gasoline engine: Imaging and simulating the effects of flash-boiling and intake crossflow Int. J. Engine Res. (IF 2.5) Pub Date : 2024-02-22 Hengjie Guo, Roberto Torelli, Namho Kim, David L Reuss, Magnus Sjöberg
Accurate predictions of fuel spray behavior and mixture formation in simulations of direct-injection spark-ignition (DISI) engines are fundamental to ensure proper description of all subsequent processes including ignition, combustion, and emissions. In this work, the spray evolution in a single-cylinder optical DISI engine was studied experimentally and numerically with the goal of enabling predictive
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Experimental study of peripheral fuel injection for higher performance in diesel engines Int. J. Engine Res. (IF 2.5) Pub Date : 2024-02-21 Edward F Bogdanowicz, Allen Loper, Joshua Bittle, Ajay K Agrawal
In conventional diesel combustion (CDC), a centrally located multi-hole injector supplies fuel radially outwards. This study introduces and explores the concept of peripheral fuel injection (PeFI) to supply fuel from multiple locations on top of the combustion chamber using several single-hole injectors. The PeFI concept is designed to eliminate flame-wall and jet-wall interactions, and, ideally, to
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Analysis of the relationship between near-wall velocity distribution and wall heat flux under diesel spray flame impingement in an RCEM Int. J. Engine Res. (IF 2.5) Pub Date : 2024-02-15 Hyun Jo, Yuta Kawai, Naoto Horibe, Hiroshi Kawanabe, Takuji Ishiyama, Daijiro Ishii, Yuji Mihara
To clarify the relationship between the near-wall flow and the heat flux through the wall, the velocity distribution of the diesel spray flame and the heat flux at the combustion chamber wall were measured in a rapid compression and expansion machine (RCEM), which has a twodimensional combustion chamber. The velocity distribution of the diesel spray flame near the wall was measured by the particle
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Investigations on the applicability of machine learning algorithms to optimize biodiesel composition for improved engine fuel properties Int. J. Engine Res. (IF 2.5) Pub Date : 2024-02-05 Kiran Raj Bukkarapu, Anand Krishnasamy
Selecting suitable biodiesel for the intended application is challenging due to the significant variations in the feedstock for producing biodiesel. The available models to predict biodiesel properties have limited applicability and reliability. The present work addresses these two challenges by developing reliable models based on machine learning algorithms for predicting engine fuel properties of
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A numerical analysis of hydrotreated vegetable oil and dimethoxymethane (OME1) blends combustion and pollutant formation through the development of a reduced reaction mechanism Int. J. Engine Res. (IF 2.5) Pub Date : 2024-02-05 José M García-Oliver, Ricardo Novella, Carlos Micó, Usama Bin-Khalid, Dario Lopez-Pintor
The solution to the dilemma of carbon footprint of internal combustion engines and pollutant emissions is necessary for the survival of this technology. In this context, alternative fuels have shown great potential in terms of achieving cleaner combustion and compliance with ever increasing pollutant emissions regulations. This work is focused on the study of two promising alternative fuels as Hydrotreated
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Coupled effect of injection position variation on gas exchange stability of a free-piston engine Int. J. Engine Res. (IF 2.5) Pub Date : 2024-02-05 Lei He, Li Wang, Chenheng Yuan
Gas exchange fluctuations may lead to operation instability of the free-piston engine (FPE), because the engine has a coupling effect between the gas exchange and the piston motion, which is different from a conventional engine. It is, therefore, important to study the gas exchange instability to ensure the stable operation of the engine. This study focuses the effect of variable piston position when
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Investigation of injection parameters coupled with fuel reactivity on combustion and emissions in dual direct-injection GCI engine Int. J. Engine Res. (IF 2.5) Pub Date : 2024-02-05 Haoqing Wu, Shijie Mi, Yong Qian, Yaoyuan Zhang, Wenbin Zhao, Xingcai Lu
Fuel injection parameters and fuel reactivity significantly affect engine performance, combustion, and emissions. The dual direct-injection strategy could compensate for the insufficient heat release rate to improve the gasoline compression ignition (GCI) mode with medium injection pressure for high loads. This research aims to couple injection parameters and fuel reactivity to optimize the combustion
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Reinforcement learning applied to dilute combustion control for increased fuel efficiency Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-31 Bryan P Maldonado, Brian C Kaul, Catherine D Schuman, Steven R Young
To reduce the modeling burden for control of spark-ignition engines, reinforcement learning (RL) has been applied to solve the dilute combustion limit problem. Q-learning was used to identify an optimal control policy to adjust the fuel injection quantity in each combustion cycle. A physics-based model was used to determine the relevant states of the system used for training the control policy in a
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Conduction-strain model for heat transfer characterization in internal combustion engines Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-31 Kazuhito Dejima, Osamu Nakabeppu
Heat transfer between combustion gases and walls is one of the most important phenomena for internal combustion engines; however, its mechanisms have not yet been elucidated. This study proposed a new model based on one-dimensional heat conduction to characterize and predict engine heat transfer. This model assumes a conduction thickness of a thermal boundary layer determined by heat conduction and
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A numerical study of ignition and flame development characteristics in GCI combustion using large eddy simulations and chemical explosive mode analysis Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-31 Yuanyuan Zhao, Chao Xu, Yan Zhang, Zongyu Yue, Chenchen Wang, Zhenyang Ming, Yuqing Cai, Zunqing Zheng, Hu Wang, Mingfa Yao
This work investigates the ignition and flame development processes of low reactivity fuel combustion under compression ignition conditions based on the large eddy simulation approach. The chemical explosive mode analysis (CEMA) is employed to characterize the local combustion features, including gas-liquid fuel zone, auto-ignition, diffusion-assisted, extinction, cool flame and post-ignition zone
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Experimental study of spatial distribution of knock events in a turbocharged spark-ignition engine Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-31 Shuo Meng, Zhiyu Han, Benzheng Fan, Zhenkuo Wu, Qiang Shao, Laihui Tong
An experimental investigation on the spatial distribution of knock events in a turbocharged spark-ignition engine for hybrid vehicle applications was conducted by using a multichannel fiber optic method. The knock positions were detected under different conditions to investigate the influence of crucial engine design and operating parameters on the knock characteristics including the spatial distribution
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Effects of exhaust gas recirculation on nitrogen oxides, brake torque and efficiency in a hydrogen direct injection spark ignition engine Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-18 Yongrae Kim, Jun Ha, Cheolwoong Park, Young Choi, Kyeonghyeon Lee, Hongkil Baek, Seungwoo Lee, Jeongwoo Lee
This study investigated the effects of exhaust gas recirculation (EGR) on emission and efficiency in a hydrogen direct injection spark ignition engine. EGR was supplied as the low-pressure (LP)-EGR system by controlling EGR valve from zero to 18.7% in terms of mass fraction. The result showed that EGR effect on nitrogen oxides (NOx) reduction became enlarged as higher engine speed due to increasing
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Experimental study of lube oil pre-ignition in an optical gas engine test rig Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-18 Walter Vera-Tudela, Pascal Süess, Patrick Albrecht, Silas Wüthrich, Kai Herrmann
Lean-premixed gas combustion is an attractive option for meeting future emission standards toward considerably lower particulate matter and emissions while obtaining an efficiency comparable to diesel combustion. However, ignition processes still pose considerable challenges, with pre-ignition being a major issue. The pre-ignition phenomenon might result from the self-ignition of lube oil in hot zones
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A comprehensive investigation on the internal flow and outflow characteristics of GDI elliptical divergent nozzles Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-13 Shenghao Yu, Bifeng Yin, Chen Chen, Hekun Jia, Weifeng Wang
The substantial demand for enhanced combustion efficiency and achieving near-zero emissions in GDI engines has spurred the introduction of a novel approach employing elliptical divergent nozzle spray technology. This innovative method, which marries the elliptical shape with a divergent nozzle, not only elevates downstream atomization quality but also mitigates nozzle tip wetting. Nevertheless, there
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Study on methanol-hydrogen engine in extended-range electric vehicles Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-12 Yankun Jiang, Yuchao Zhang, Beidong Zhang, Yexin Chen
The demand for clean and efficient new vehicle models is steadily increasing. Methanol-hydrogen engines use methanol as the main fuel and can recover the heat from engine exhaust to dissociate part of methanol into hydrogen-rich syngas. The syngas is recirculated back into the engine cylinder to improve combustion. Therefore, methanol-hydrogen engines have a higher energy utilization efficiency. This
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An integrated grey-box model for accurate ship engine performance prediction under varying speed and environmental conditions Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-11 Sunyoung Park, Yoojeong Noh, Young-Jin Kang, Jaechul Sim, Minsung Jang
The development of ship engine fault diagnosis has led to an increased interest in predicting marine engine performance under various environmental and operating conditions. However, predicting engine performance using a single model is limited due to the various characteristics of ship engines depending on speed and environmental conditions. To address this issue, we propose a grey box model (GBM)-based
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Effects of thermal barrier coating porosity on combustion and heat losses in a light duty diesel engine Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-11 Joop Somhorst, Michael Oevermann
Plasma sprayed thermal barrier coatings (TBCs), applied in internal combustion engines, can have a profound impact on the apparent rate of heat release. Upon fuel jet contact with the piston wall, the heat loss seems to increase compared to an uncoated piston and combustion appears delayed. Permeable porosity of plasma sprayed TBCs is identified as one of the possible causes for this unwanted effect
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Research on pressure wave decoupling method for the nozzle of common rail electronically controlled injector based on water hammer theory Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-11 Jing Xu, Liyun Fan, Bo Li, Yunpeng Wei, Qi Lan, Guangze Wang
The pressure fluctuation in nozzle of the common rail injector directly affects the stability of fuel injection. As the pressure fluctuation often the result of coaction of multiple factors, it is difficult to carry out in-depth research. To reveal the mechanism of pressure fluctuation of common rail injector nozzle, based on the verified AMESim simulation model of the injector, the decoupling method
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A relative comparison of HCCI, PCCI, and RCCI combustion strategies: an alternative fuels perspective Int. J. Engine Res. (IF 2.5) Pub Date : 2024-01-06 Saurabh K Gupta, Anand Krishnasamy
Low temperature combustion (LTC) strategies have the potential for simultaneous reduction in oxides of nitrogen (NOx) and soot emissions while achieving higher thermal efficiency. Commercial widespread implementation of LTC strategies demands addressing several challenges, including narrow operating load range, lack of ignition timing control, and reducing high unburned hydrocarbon (HC) and carbon
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Development of a fractal engine simulation model in a multidimensional simulation for the cold start process of a gasoline direct injection engine Int. J. Engine Res. (IF 2.5) Pub Date : 2023-05-16 Delong Li, Jinghu Hu, Matthew Hall, Ron Matthews
A fractal engine simulation (FES) sub-model was integrated into three-dimensional simulations for modeling turbulent combustion for a gasoline direct injection (GDI) engine. The FES model assumes t...
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A comprehensive study for the identification of the requirements for an optimal H2 combustion engine Int. J. Engine Res. (IF 2.5) Pub Date : 2023-05-11 Olivier Laget, Loïc Rouleau, Matthieu Cordier, Florence Duffour, Giampaolo Maio, Vincent Giuffrida, Rajesh Kumar, Ludovic Nowak
As part of the fight against global warming and to achieve greenhouse gas emission targets, it is crucial to reduce the carbon footprint of ground transportation. Mobility needs are continuously gr...
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A rate-of-injection model for predicting single and double injection with or without fusion Pascal Tetrault, Patrice Seers Int. J. Engine Res. (IF 2.5) Pub Date : 2023-05-06 Pascal Tetrault, Patrice Seers
Models used to predict the instantaneous injected fuel mass are of varied interest in automotive applications, including for providing inputs to CFD calculations or for engine control. While multip...
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Energy consumption of mobile air-conditioning systems in electrified vehicles under different ambient temperatures Int. J. Engine Res. (IF 2.5) Pub Date : 2023-05-02 S Gil-Sayas, G Di Pierro, A Tansini, S Serra, D Currò, A Broatch, G Fontaras
In 2019, passenger car CO2 emissions peaked at 3.2 billion metric tons globally. Despite efforts to curb vehicle CO2 emissions and the ambitious targets adopted for greenhouse gas mitigation in the...
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Impact of diesel-hythane dual-fuel combustion on engine performance and emissions in a heavy-duty engine at low-load condition Int. J. Engine Res. (IF 2.5) Pub Date : 2023-05-02 K Longo, X Wang, H Zhao
Heavy-duty diesel vehicles are currently a significant part of the transportation sector, as well as one of the major sources of carbon dioxide (CO2) emissions. International commitments to reduce ...
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Dynamic cerebral autoregulation in Alzheimer’s disease and mild cognitive impairment: A systematic review Int. J. Engine Res. (IF 2.5) Pub Date : 2023-05-01 Rachel Heutz, Jurgen Claassen, Sanne Feiner, Aaron Davies, Dewakar Gurung, Ronney B Panerai, Rianne de Heus, Lucy C Beishon
Dynamic cerebral autoregulation (dCA) is a key mechanism that regulates cerebral blood flow (CBF) in response to transient changes in blood pressure (BP). Impairment of dCA could increase vulnerabi...
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Ultra-high-definition (22 MHz) ultrasound of the ulnar nerve: additional value and normative data Int. J. Engine Res. (IF 2.5) Pub Date : 2023-05-01 Mike Ruettermann, Dieuwke C. Broekstra, Gerbrand J. Groen, Jan Willem Elting
We studied 30 healthy volunteers (60 arms), categorized into three age groups with equal numbers to verify if a 22 MHz compared with a 15 MHz ultrasound transducer has additional value for studying...
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Book review: Asit Biswas and Shubh Brat Sarkar (Eds.), Dalit Poems, Songs and Dialogues from Bengal in English Translation Int. J. Engine Res. (IF 2.5) Pub Date : 2023-05-01 Bidisha Pal
Asit Biswas and Shubh Brat Sarkar (Eds.), Dalit Poems, Songs and Dialogues from Bengal in English Translation (Kolkata: Ababil Books, 2019), 266 pp., ₹495, ISBN: 978-8-1939-3923-9 (Paperback).
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Book review: Juned Shaikh, Outcaste Bombay: City Making and the Politics of the Poor Int. J. Engine Res. (IF 2.5) Pub Date : 2023-05-01 P. G. Jogdand
Juned Shaikh, Outcaste Bombay: City Making and the Politics of the Poor. Orient BlackSwan Private Ltd, 2021, 227 pp., ₹995.
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Analysis of ducted fuel injection at high-pressure transcritical conditions using large-eddy simulations Int. J. Engine Res. (IF 2.5) Pub Date : 2023-04-26 Jack Guo, Davy Brouzet, Wai Tong Chung, Matthias Ihme
Ducted fuel injection (DFI) is a proposed fuel injection concept for achieving substantial reductions in emissions. In this concept, the fuel is injected through a coannular duct, resulting in incr...
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A study of flame dynamics and structure in premixed turbulent planar NH3/H2/air flames Int. J. Engine Res. (IF 2.5) Pub Date : 2023-04-26 Parsa Tamadonfar, Shervin Karimkashi, Ossi Kaario, Ville Vuorinen
Ammonia (NH3) has received considerable attention as a near future carbon-free synthetic fuel due to its economic storage/transportation/distribution, and its potential to be thermally decomposed t...
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Additive-Mixing Fuel Injection (AMFI): A device for robust control and improved performance of high-efficiency LTGC engines Int. J. Engine Res. (IF 2.5) Pub Date : 2023-04-25 John E Dec, Dario Lopez Pintor, Gerald Gentz
Low-temperature gasoline combustion (LTGC) engines can provide high efficiencies with very low NOx and particulate emissions. Despite these major advantages, methods for controlling LTGC combustion...
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Parametric evaluation of ducted fuel injection in an optically accessible mixing-controlled compression-ignition engine with two- and four-duct assemblies Int. J. Engine Res. (IF 2.5) Pub Date : 2023-04-24 Boni Frances Yraguen, Adam Michael Steinberg, Christopher William Nilsen, Drummond Edward Wengrove, Charles Jeffery Mueller
Ducted fuel injection (DFI) is a strategy to improve fuel/charge-gas mixing in direct-injection compression-ignition engines. DFI involves injecting fuel along the axis of a small tube in the combu...
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Arrhenius type empirical ignition delay equations based on the phenomenology of in-cylinder conditions for wide operating ranges in modern diesel engines Int. J. Engine Res. (IF 2.5) Pub Date : 2023-04-24 Yuhei Sakane, Ryota Kanno, Yang Yurui, Yoshimitsu Kobashi, Gen Shibata, Hideyuki Ogawa
Ignition delays were systematically measured in a DI diesel engine under wide ranging and various engine operating conditions, including engine speeds, fuel injection pressures, intake gas temperat...
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A universally applicable 0D combustion model with a novel analysis of the critical factors affecting combustion in spark-ignition engines Int. J. Engine Res. (IF 2.5) Pub Date : 2023-04-21 Myoungsoo Kim, Han Ho Song
Notwithstanding the continuous technological development of spark-ignition engines, the physics of in-cylinder phenomena has not been explicitly clarified to date. Furthermore, the advent of divers...
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Understanding hydrogen jet dynamics for direct injection hydrogen engines Int. J. Engine Res. (IF 2.5) Pub Date : 2023-04-19 Sanguk Lee, Joonsik Hwang, Choongsik Bae
The energy paradigm is shifting toward carbon-free and low-emission alternative fuels. Among the many candidates, hydrogen is considered a promising option thanks to its favorable fuel properties, ...
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Effects of piston crown designs on in-cylinder flow and mixture formation in gasoline direct injection engine under the lean burn condition Int. J. Engine Res. (IF 2.5) Pub Date : 2023-04-19 Jisoo Kim, Jisoo Shin, Donghwan Kim, Yousang Son, Sungwook Park
In this study, the effects of piston shapes on in-cylinder flow characteristics and mixture formation in the lean condition was analyzed using the PIV method and CFD (CONVERGE v2.4). The four-pisto...
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Optical study of knocking phenomenon in a spark-ignition engine by using high-speed OH* chemiluminescence imaging: A multiple ignition sites approach Int. J. Engine Res. (IF 2.5) Pub Date : 2023-04-19 Kalim Uddeen, Hao Shi, Qinglong Tang, Gaetano Magnotti, James Turner
Knock in a spark-ignition (SI) engine is a complicated combustion phenomenon that stimulates high-pressure oscillations inside the combustion chamber and restricts engine performance. This study pr...