Novel Over-Expanded Six-Stroke Engine Mechanism

Arabacı, Emre; Kılıç, Bayram

doi:10.17798/bitlisfen.428198

Cited by 2 publications

(1 citation statement)

References 31 publications

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“…Arabaci [4] also analyzed performance through mathematical modeling and clearly stated the superiority of a six-stroke engine over a four-stroke engine. He further investigated design parameters by developing a thermodynamic model and examining the kinetic and dynamic properties of a six-stroke engine [24]. Chen et al [25] proposed a new concept of a six-stroke engine operating on a Rankine cycle.…”

Section: Literature Reviewmentioning

confidence: 99%

Six-Stroke Cylinder Engine : An Emerging Technology

2021

IJETER

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The requirement for the advancement of internal combustion (IC) engines and enhance methods for the combustion cycle is increasing day by day. The four-stroke combustion engine is extensively used due to better fuel economy and less exhaust smoke. However, the major drawback includes a considerable amount of extra heat energy generation that directly adds up to waste energy. In order to overcome the limitation, the idea of computing two extra strokes in the four-stroke engine to utilize the waste energy has been introduced. The six-stroke engine has significantly improved the fuel working ratio per cycle. Incorporating alternative fuels like hydrogen and HHO into six-stroke technology increases efficiency and minimizes exhaust emissions. A six-stroke engine could be the solution for making hybrid automobile technology more convenient. The review article aims to thoroughly understand the underlying principles behind the improved efficiency of a six-stroke cylinder engine. The researches on the six-stroke cylinder engine are summarized in the literature review. The design configuration of alternative fuels is discussed towards the end of the paper.

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Section: Literature Reviewmentioning

confidence: 99%

Six-Stroke Cylinder Engine : An Emerging Technology

2021

IJETER

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6-Stroke water injection engine literature review with an introduction of heat transfer and thermodynamic analysis

Mejía-Gallón,

Gomez,

Estrada Grisales

et al. 2024

Int. J. Environ. Sci. Technol.

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Internal combustion engines have played a crucial role in the advancement of society. Consequently, there has been a persistent need to enhance their efficiency and performance. The water-injected six-stroke engine is based on conventional four-stroke engines, producing additional power by injecting water into the hot combustion products during the expansion stroke, thereby increasing the overall engine efficiency. However, a comprehensive review that consolidates existing knowledge and identifies future research opportunities in six-stroke engine technology is lacking. This study addresses this gap by thoroughly examining the thermodynamic operation of six-stroke engines and analyzing the impact of water injection on engine performance. The review covers literature from 1994 to 2023, categorizing studies based on the modeling approach, working fluid, thermodynamic cycle, and consideration of heat transfer. Among the 18 analyzed articles, predominantly published from 2015 to 2019, half utilize analytical models, while the rest employ experimental models addressing heat transfer losses. Notably, water injection exhibits a substantial influence, manifesting as a 5.18% increase in brake power and a 1.55% enhancement in thermal efficiency, particularly with acetylene as the working fluid. Finally, a literature overview of water injection in hot gas environments within the engine cylinder was conducted in addition to a preliminary thermodynamic analysis of the Otto and Diesel cycles to compare different configurations outlined in the literature. The lack of studies, experimental setups, and non-idealized models that consider factors such as heat transfer or water evaporation during injection is evident. By critically synthesizing the available literature, this study offers valuable insights into the potential advantages, limitations, and prospects of six-stroke engine studies.

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Novel Over-Expanded Six-Stroke Engine Mechanism

Cited by 2 publications

References 31 publications

Six-Stroke Cylinder Engine : An Emerging Technology

Six-Stroke Cylinder Engine : An Emerging Technology

6-Stroke water injection engine literature review with an introduction of heat transfer and thermodynamic analysis

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