Performance and emissions of natural gas/diesel dual-fuel engine at low load conditions: Effect of natural gas split injection strategy

Felayati, Frengki Mohamad; Semin, Semin; Cahyono, Beny; Bakar, Rosli Abu; Birouk, Madjid

doi:10.1016/j.fuel.2021.121012

Cited by 33 publications

(11 citation statements)

References 26 publications

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“…In this section, the experimental setup is briefly explained; a detailed explanation is reported in another study [17]. The experimental study used a dedicated diesel engine that is fueled by diesel.…”

Section: Methodsmentioning

confidence: 99%

“…Meanwhile, the fuel mass injection is regulated by the manual handle attached to the engine which adjusts the flow of natural gas fuel substitution. However, the natural gas substitution is using the percentage of energy substitution (PES) calculation which is described in another study [17]. In brief, the PES is the natural gas fuel energy percentage compared to the total fuel energy.…”

Section: Injection Strategiesmentioning

confidence: 99%

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Study on Natural Gas/Diesel Dual-fuel Engine Energy Ratio: Effect of Natural Gas Injection Parameters

Felayati

Dwisetiono

Prasutiyon

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Natural gas has been a promising demand for several years in Indonesia as a fuel for a diesel engine by converted into a natural gas/diesel dual-fuel engine. However, determining the energy ratio of the diesel and natural gas fuel is important due to the engine performance and emissions which affect the engine safety operation. This study presents the method to determine the natural gas and diesel fuel energy ratio on intake port natural gas injection mode through experiment. A direct injection diesel engine is converted to a natural gas/diesel dual-fuel engine by injecting natural gas into the intake port. The diesel injection parameters are unmodified for the experiment; besides the natural gas injection variations are studied to determine the energy ratio. Moreover, the engine is tested for low to high load conditions. However, natural gas injection duration, pressure, and injection timing variation affect the fuel energy ratio and indicated thermal efficiency (ITE). At low load, the optimum fuel energy ratio and ITE are achieved at a long injection duration (10 ms) and with advanced injection timing. Moreover, at high load, the optimum fuel energy ratio and ITE is achieved at high natural gas injection duration (12 ms), high injection pressure (3 bar), and advancing the injection timing.

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Section: Methodsmentioning

confidence: 99%

Section: Injection Strategiesmentioning

confidence: 99%

Study on Natural Gas/Diesel Dual-fuel Engine Energy Ratio: Effect of Natural Gas Injection Parameters

Felayati

Dwisetiono

Prasutiyon

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

View full text Add to dashboard Cite

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“…The flame propagation speed of natural gas is lower than that of traditional fossil fuels such as gasoline and diesel, especially under lean-burn conditions. , Thus, natural gas and another fuel are together injected into the engine cylinder as for the dual-fuel combustion. Dual-fuel (for example diesel/NG) compression ignition engine has gained more and more interest due to its good characteristic for clean emissions together with high combustion efficiency . In diesel/natural gas dual-fuel engines, the natural gas is the primary fuel to produce power, but natural gas has a relatively low reactivity and is not easy for ignition; thus diesel is adopted as an ignition source to initiate the ignition of the natural gas–air mixture .…”

Section: Introductionmentioning

confidence: 99%

“…Dual-fuel (for example diesel/NG) compression ignition engine has gained more and more interest due to its good characteristic for clean emissions together with high combustion efficiency. 10 In diesel/natural gas dual-fuel engines, the natural gas is the primary fuel to produce power, but natural gas has a relatively low reactivity and is not easy for ignition; thus diesel is adopted as an ignition source to initiate the ignition of the natural gas–air mixture. 11 Sevik et al 12 reported that a small pilot injection of diesel (5–10% of the fuel energy) was used to ignite the direct injected natural gas jet in a high-pressure natural gas direct-injection engine.…”

Section: Introductionmentioning

confidence: 99%

“…Ishibashi et al 17 optically observed a natural gas jet and dual-fuel combustion progress in a rapid compression and expansion machine and reported that NG injection parameters, such as the injection time delay and injection angle, had a significant impact on jet entrainment. Felayati et al 10 tested a dual-fuel diesel/natural gas engine and studied the natural gas split injection strategy, and they found that natural gas split injection with proportional split injection ratio and small dwelling timing improved NOx, CO, and hydrocarbons (HC) emissions.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study of Dual-Fuel Diesel/Natural Gas High-Pressure Injection

Lei

Qiu

et al. 2022

ACS Omega

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Dual-fuel diesel/natural gas direct-injection engine is promising and highly attractive due to its low-carbon emission and high thermal efficiency, and both high-pressure diesel and natural gas injections are critical for air−fuel mixing. This study presents an optical experimental investigation on the highpressure dual-fuel diesel/methane injection process based on a constant-volume vessel test rig. The results show that the diesel penetration process of the dualfuel injection experiences two stages: Stage I, the diesel tip penetration S diesel , the diesel spray area A diesel , and the diesel spray perimeter C diesel of the dual-fuel injection are smaller than those of the single diesel injection. Stage II, both the diesel and methane continue to penetrate forward, and S diesel , A diesel , and C diesel of the dual-fuel injection become larger than those of the single diesel injection do. The diesel injection pressure causes effect on the dual-fuel spray penetration. The diesel injection pressure directly causes linear influence on the two-stage dual-fuel injection characteristic. As the diesel injection pressure increases, the diesel spray meets the methane jet advancer and the cross point occurs linearly earlier. Furthermore, the dual-fuel injection is asymmetric and the methane gas jet enhances this asymmetry so that the spray cone shifts to the side of the methane gas jet.

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A Review on Gaseous Fuels for Dual-Fuel Diesel Engines

Krop

Brito

2023

Proceedings of the 2nd International Conference on Water Energy Food and Sustainability (ICoWEFS 2022)

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Performance and emissions of natural gas/diesel dual-fuel engine at low load conditions: Effect of natural gas split injection strategy

Cited by 33 publications

References 26 publications

Study on Natural Gas/Diesel Dual-fuel Engine Energy Ratio: Effect of Natural Gas Injection Parameters

Study on Natural Gas/Diesel Dual-fuel Engine Energy Ratio: Effect of Natural Gas Injection Parameters

Experimental Study of Dual-Fuel Diesel/Natural Gas High-Pressure Injection

A Review on Gaseous Fuels for Dual-Fuel Diesel Engines

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