Numerical/Experimental Study on Downsized Iranian National Engine (EF7) Performance at Low Engine Speeds

Namar, Mohammad Mostafa; Jahanian, null; Shafaghat, null; Nikzadfar, Kamyar

doi:10.5829/ije.2021.34.09c.11

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…The ever-increasing growth of human societies, continuous change of customer desirers and the mechanization of traditional common methods besides fossil fuel resource limitations, environmental pollutants concerns, and design considerations lead researchers to have non-stop efforts developing the performance of internal combustion engines. Extended works have been carried out by researchers to have more efficient and cleaner engines [6][7][8]. These efforts contain a vast variety of approaches from engine design [9,10] to fuel development [11,12] and combustion control [13,14].…”

Section: Recent Trendmentioning

confidence: 99%

Artificial Intelligence in Diesel Engines

Koten,

Mostafa Namar

2024

Diesel Engines - Current Challenges and Future Perspectives

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The use of artificial intelligence in different parts of human life is becoming inevitable and it is expected that in the near future, the range of artificial intelligence applications will include all service, industrial, research, and educational activities. Providing a solution or performance enhancement in research and industrial activities, considering that these activities contain lots of dependent parameters with formulated/non-formulated correlations, is always a challenge for researchers. The recent approach of researchers in using statistical data and applying techniques based on artificial intelligence is a promising solution that provides the desired answers more quickly and accurately. The automobile industry and internal combustion engines have also benefited from the advantages of artificial intelligence in order to improve their performance and efficiency. Among the most important developments and achievements of this approach, we can mention real-time modeling, optimization and intelligent control, new fuel combinations, fault detection systems, and self-driving vehicles. Therefore, in this chapter, the recent research and industrial achievements of diesel engines due to the use of artificial intelligence techniques will be discussed.

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Section: Recent Trendmentioning

confidence: 99%

Artificial Intelligence in Diesel Engines

Koten,

Mostafa Namar

2024

Diesel Engines - Current Challenges and Future Perspectives

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“…Their results showed that higher inlet pressure of the high-pressure compressor leads to enhancement of thermal performance of system; however, it decreases exergy performance of the system. Other valuable works have been conducted in the fields of thermal and heat systems, thermodynamics, thermal cycles, and renewable energies, which can be referred to in literature (23)(24)(25)(26).…”

Section: Introductionmentioning

confidence: 99%

Optimizing Energy Recovery from Marine Diesel Engines: A Thermodynamic Investigation of Supercritical Carbon Dioxide Cycles

Yakkeshi,

Jahanian

2024

IJE

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Highlights• In this study, four heating recovery cycles of carbon dioxide were processed with EES. • Modeling four critical recovery heat generator cycles for carbon dioxide • Analysis and comparison of effective parameters of the heat recovery cycle • The exhaust recovery with a regenerative converter yields an output power of 228.3 kW. • The highest turbine output power (611.5 kW) exhaust recovery cycle with two converters NOMENCLATURE BR v 𝑇 𝑜𝑢𝑡 Temperature outlet ṁc Mass flow T in Temperature inlet h s Sritical isentropic enthalpy W net Net power output 𝜂 Efficiency Greek Symbols 𝑄 Heat transfered ξ Efficiency of heat exchangers C p Specific heat capacity constant pressure

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“…In this work, with intention of promoting EST utilization in engine downsizing, freedom provided by this layout is explored in detail. Firstly, a national 1.6 liter 4cylinder turbocharged engine, namely EF7 TC, is modelled in a commercial powertrain simulation package (which is widely used for investigation of input parameters influence on engine performance, FC and emission [6,[19][20][21]) and calibrated to match experimental data [22,23], after which a model for a 1 liter 3-cylinder engine is developed, while the turbocharger is replaced with an EST which utilizes a novel high-voltage battery-ultracapacitor (UC) package as the electrical source. An UC is utilized to mitigate the ageing effect on battery, since EST systems inherently involve a great number of continuous charge and discharge with high rates of current, which is majorly neglected in EFIS related studies.…”

Section: Introductionmentioning

confidence: 99%

A Model-Based Investigation of Electrically Split Turbocharger Systems Capabilities to Overcome the Drawbacks of High-Boost Downsized Engines

2022

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Engine downsizing is one the most common methods of coping with strict emission regulations. However, it must be coupled with complementary systems so that the engine performance would meet the standards. That is why new efficient solutions can pave the way toward this goal. The electric forced-induction system (EFIS) is the emerging replacement for conventional forced-induction systems (FIS), namely, turbochargers and superchargers. The reason behind this replacement is the drawbacks associated with FIS, among them are turbo lag and inefficiency in exhaust gas energy recycling. Electrically split turbocharger (EST) is a form of EFIS which offers a great potential for engine downsizing. In this paper, a new approach to EST utilization for lowering the fuel consumption (FC) without compromising performance has been introduced, through which the augmented degree of freedom enabled by an EST is used to optimize the air-charge boosting. To show the effectiveness of the proposed method, a model-based approach is used to compare two engines with and without EST technology; the performance of an already existing 1.6-l 4-cylinder turbocharged engine has been modeled based on the experimental data, and its performance indices are used as a benchmark for a downsized 1l 3-cylinder engine equipped with an EST. A comparison of these two engines in the dynamic drive cycles of the EPA Federal Test Procedure (FTP75) and Worldwide harmonized Light vehicles Test Cycles (WLTC) has shown a 28.87% and 25.35% reduction in FC, respectively, independent of the external electrical source. Furthermore, the downsized engine has shown superior performance through full-throttle acceleration in terms of torque transient response. Finally, the concept of coherence among gas-path components and its importance is presented, and knock precautions associated with air charging in this method are addressed.

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Numerical/Experimental Study on Downsized Iranian National Engine (EF7) Performance at Low Engine Speeds

Cited by 5 publications

References 26 publications

Artificial Intelligence in Diesel Engines

Artificial Intelligence in Diesel Engines

Optimizing Energy Recovery from Marine Diesel Engines: A Thermodynamic Investigation of Supercritical Carbon Dioxide Cycles

A Model-Based Investigation of Electrically Split Turbocharger Systems Capabilities to Overcome the Drawbacks of High-Boost Downsized Engines

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