Performance, rate of heat release, and combustion stability of dual‐fuel mode in a small diesel engine

Oishi, Yoshihiko; Situmorang, Riky Stepanus; Sembiring, Rio Arinedo; Kawai, Hideki; Ambarita, Himsar

doi:10.1002/ese3.352

Cited by 7 publications

(3 citation statements)

References 40 publications

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“…Similar conclusions were made in [9]. In [10], the authors point out another cause of the diesel torque and speed fluctuations -the irregularity of the fuel injection advance angle, which actually confirms the results of [8]. The performed analysis shows that the existing range of destabilizing factors of the engine operation does not allow predicting the fluctuations in its shaft speed, and, even more, determination of their numerical values.…”

supporting

confidence: 63%

International Journal of Electronics and Telecommunications

Awwad

Al-Quteimat

Al-Suod

et al. 2021

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The paper suggests an improved method of active power distribution among the gas-diesel generators operating in parallel; the method involves the control of torque and the angular positions of their rotors. The use of the suggested approach to the solution of the active power distribution task in the presence of instability of drive motor speed provides the increase of autonomous power system operation efficacy and rising the power unit's performance. The authors analyzed the causes of generation of low-frequency fluctuations of generator drive engine speed; in autonomous electric power systems, gas diesel generators are increasingly used as such generator drive engines. It is suggested to use the developed method and structure of the optical device for control of rotation period and the measurement of the generator rotor angle position characterized with high accuracy, as the sensor. The authors developed a schematic diagram of active power distribution among the generators operating in parallel, which uses the cross feedback for gas-powered diesel engine shafts momentum and the generator rotor angle position. They obtained experimental results confirming the efficiency of the suggested active power distribution method and its practical implementation. Keywords-active load sharing, frequency instability, gaspowered diesel engine, optical sensor, rotor angular position I. INTRODUCTIONNE of the most important parameters of diesel autonomous power plants is the cost-effectiveness, which is determined by the ratio of the power generated to the fuel consumption per an operation hour. The fuel consumption reduction will provide the improvement of power efficiency of autonomous power systems (APS). The optimal diesel-generator load is the load proximal to 80% of their rated power [1]. When a dieselgenerator operates at lower loading, the specific fuel consumption increases with the development of carbonization effect caused by accumulation of incomplete combustion products, which produces a negative effect on the engine resource. The generator unit loading above 80% also results in significant performance reduction [1,2].The increase in the diesel fuel price results in the need to convert diesel vehicles to gas. Currently, gas-powered dieselgenerator sets (GDGS) are widely used to provide reliable power supplies at industrial facilities. Gas-powered dieselgenerator sets (GDGS) are increasingly used due to their cost

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supporting

confidence: 63%

International Journal of Electronics and Telecommunications

Awwad

Al-Quteimat

Al-Suod

et al. 2021

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“…With HRR increasing, the maximum peak combustion pressure is increasing, too [223,312]. Bigger HRR and combustion pressure can be an advantage or disadvantage because it depends on the type of engine where it is changed [313,314]. The most important thing is to prepare the engine correctly to use fuel like HCNG.…”

Section: Crmentioning

confidence: 99%

Exploring Hydrogen-Enriched Fuels and the Promise of HCNG in Industrial Dual-Fuel Engines

Szamrej,

Karczewski

2024

Energies

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This paper presents a theoretical analysis of the selected properties of HCNG fuel calculations and a literature review of the other fuels that allow the storage of ecologically produced hydrogen. Hydrogen has the most significant CO2 reduction potential of all known fuels. However, its transmission in pure form is still problematic, and its use as a component of fuels modified by it has now become an issue of interest for researchers. Many types of hydrogen-enriched fuels have been invented. However, this article will describe the reasons why HCNG may be the hydrogen-enriched fuel of the future and why internal combustion (IC) piston engines working on two types of fuel could be the future method of using it. CO2 emissions are currently a serious problem in protecting the Earth’s natural climate. However, secondarily, power grid stabilization with a large share of electricity production from renewable energy sources must be stabilized with very flexible sources—as flexible as multi-fuel IC engines. Their use is becoming an essential element of the electricity power systems of Western countries, and there is a chance to use fuels with zero or close to zero CO2 emissions, like e-fuels and HCNG. Dual-fuel engines have become an effective way of using these types of fuels efficiently; therefore, in this article, the parameters of hydrogen-enriched fuel selected in terms of relevance to the use of IC engines are considered. Inaccuracies found in the literature analysis are discussed, and the essential properties of HCNG and its advantages over other hydrogen-rich fuels are summarized in terms of its use in dual-fuel (DF) IC engines.

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“…The combustion of RCCI can be easily controlled by the injection strategy and the replacement ratio of the fuels with different activities. [9][10][11] Compared with HCCI, RCCI is more compatible with diesel engines. [12][13][14] Although the aforementioned low-temperature combustion strategies can reduce soot emissions produced by diesel engines with great potential, they can only run in a specific operational range.…”

Section: Introductionmentioning

confidence: 99%

Optical investigation on combustion and soot formation characteristics of isopropanol‐butanol‐ethanol (IBE)/diesel blends

Dai

et al. 2021

Energy Science & Engineering

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Isopropanol-butanol-ethanol (IBE) is considered to be a promising alternative fuel for diesel to reduce soot emissions. However, currently researchers have not yet revealed its soot formation processes. In this regard, the forward illumination light extinction (FILE) technology was used to investigate the soot formation process of IBE/diesel blends. Diesel containing 50% of IBE in volume (IBE50), pure IBE (IBE100), and diesel were tested. The experimental results show that soot formation regions for the tested fuels are greatly affected by the ambient conditions. The lower the ambient temperature is, the smaller the soot formation region is. Besides, a low ambient temperature coupled with a small ambient oxygen concentration may further reduce soot formation regions of the tested fuels. Results also show that soot formation regions of IBE50 and IBE100 are obviously smaller than that of diesel. In most test conditions, the head of soot formation regions for IBE50 and IBE100 exhibits as a thin strip. Furthermore, soot formation duration and intensity of IBE50 and IBE100 are obviously small in comparison with diesel, especially at low ambient temperature. The results of this study indicate that when IBE is directly blended with diesel, it is able to reduce soot emissions.

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Performance, rate of heat release, and combustion stability of dual‐fuel mode in a small diesel engine

Cited by 7 publications

References 40 publications

International Journal of Electronics and Telecommunications

International Journal of Electronics and Telecommunications

Exploring Hydrogen-Enriched Fuels and the Promise of HCNG in Industrial Dual-Fuel Engines

Optical investigation on combustion and soot formation characteristics of isopropanol‐butanol‐ethanol (IBE)/diesel blends

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