6-Stroke Engine: Thermodynamic Modelling and Design for Testing

Nimsiriwangso, Atip; Barnes, Paul N.; Doustdar, Omid; Wyszyński, Miroslaw L.; Mohamed, Gasim; Mohyeldin, Maisara; Kowalski, Mirosław

doi:10.2478/kones-2019-0037

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…The introduction of the Rankine cycle in the cylinder has proved to increase the efficiency and indicated power of the cycle. Nimsiriwangso et al [26] modeled and simulated a six-stroke engine with liquid injection technology. He modified parameters like the valve timing, combustion duration, and speed engine to achieve the optimum condition for maximum efficiency and minimum exhaust emission.…”

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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Design and analysis of six-stroke engine by using the alternative fuel to enhance thermal efficiency

Sri¹,

Pasikanti²,

Akella³

2022

JFET

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The Six-Stroke cycle consists of a standard four-stroke Otto Cycle followed by a heat recovering and expansion cycle. Therefore, this processing power uses heat and increases the engine's overall efficiency. To recover the waste heat, various methods are being adopted, and significant modifications to the conventional internal combustion engine must be done. In this paper, the improvement of the Six-Stroke engine performance is observed by varying the working fuel used in the Six-Stroke. The limitation of the Six-Stroke is described, and an idea for the alternative six-stroke cycle is to increase the amount of heat recovered. The performance of the six-stroke engine is observed with Petrol, Methanol, Ethanol, and Propane fuels with required thermodynamic analysis. To know the amount of percentage of waste energy, additional strokes are recorded and thermal efficiency calculated. For the Six-stroke, the general design of the piston is noticed and simulated. It is concluded that Methanol and Ethanol had the most significant feature for the Six-Stroke engine.

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6-Stroke Engine: Thermodynamic Modelling and Design for Testing

Cited by 3 publications

References 9 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

Design and analysis of six-stroke engine by using the alternative fuel to enhance thermal efficiency

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