Gaseous and particle emissions in low-temperature combustion diesel–HCNG dual-fuel operation with double pilot injection

Simio, Luigi De; Iannaccone, Sabato

doi:10.1016/j.apenergy.2019.113602

Cited by 16 publications

(11 citation statements)

References 26 publications

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“…This article reports all the data which support that choice, most of which have been not reported in Ref. [1].…”

Section: Datamentioning

confidence: 62%

“…The data presented in this paper was based on the experimental activity which investigates the LTC in a dual fuel light duty engine [1]. The experimental analysis carried out in Ref.…”

Section: Datamentioning

confidence: 99%

“…The experimental analysis carried out in Ref. [1] was aimed at measure the performance and emissions of an internal combustion engine fueled with natural gas and natural gas/hydrogen mixtures as main fuels, pilot ignited by small amount of diesel fuel, in the case of LTC combustion. To activate this mode of combustion it was necessary to increase the injection advance of the pilot diesel fuel, with respect to the end of the compression stroke, in a remarkable manner.…”

Section: Datamentioning

confidence: 99%

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Dataset for comparison between single and double pilot injection in diesel-natural gas dual fuel engine

Simio

Iannaccone

2020

Data in Brief

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The present data article is based on the research work which investigates the low-temperature combustion (LTC) in a dual fuel light duty engine. The LTC mode was activated by means of double pilot injection to control the energy release rate in the first combustion stage, thereby minimizing the increase of the rate of pressure and allowing the operation under LTC. This data article presents all the data which supports the choice for double pilot injection vs single pilot injection for that research. In this experimental work the engine was fueled with diesel, in full-diesel (FD) mode, and in dual fuel (DF) mode with natural gas and natural gas – hydrogen mixtures as main fuel. In DF mode the pilot diesel fuel was injected both with a single and a double injection at the same engine speed and torque. The pressure cycle in one of the four cylinders, the intake manifold pressure and the injector current signal were acquired on a crank angle basis for 100 consecutive engine cycles. Analysis of combustion rate, maximum pressure rise and fuel/air flow rate were performed. The data set, which also includes some engine control parameters, the combustion chamber geometry and some injector features, can potentially be reused to numerically model the combustion phenomena and, in particular, to investigate the effect on the ignition phase of combustion in LTC, also considering the variability from cycle to cycle.

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“…This article reports all the data which support that choice, most of which have been not reported in Ref. [1].…”

Section: Datamentioning

confidence: 62%

“…The data presented in this paper was based on the experimental activity which investigates the LTC in a dual fuel light duty engine [1]. The experimental analysis carried out in Ref.…”

Section: Datamentioning

confidence: 99%

Section: Datamentioning

confidence: 99%

See 1 more Smart Citation

Dataset for comparison between single and double pilot injection in diesel-natural gas dual fuel engine

Simio

Iannaccone

2020

Data in Brief

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“…Besides the positive effects on CO 2 , CO, and UHC emissions, De Simio and Iannaccone 41 also demonstrated the addition of H 2 to the NG-air mixture permits to obtain, at least at low loads, NO x emissions lower than that of CDC. Moreover, Zhou et al 42 reported a reduction in soot emissions as the H 2 concentration in the H 2 -Compressed Natural Gas (CNG) blend is increased, since the transformation of benzene into larger Polycyclic Aromatic Hydrocarbons (PAHs) is slowed down by the presence of H 2 .…”

Section: Introductionmentioning

confidence: 93%

Influence of H₂ enrichment for improving low load combustion stability of a Dual Fuel lightduty Diesel engine

Mattarelli

Rinaldini

Caprioli

et al. 2021

International Journal of Engine Research

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Dual Fuel (DF) combustion can help to reduce the environmental impact of internal combustion engines, since it may provide excellent Brake Thermal Efficiency (BTE) combined with ultra-low emissions. This technique is particularly attractive when using biofuels, or fuels with a low Carbon content, such as Natural Gas (NG). Unfortunately, as engine load decreases and the homogeneous NG-air mixture tends to become very lean, the high chemical stability of NG can be a serious obstacle to the completion of combustion. As a result, BTE drops and UHC and CO emissions become very high. A possible way to address this problem could be the addition of hydrogen (H2) to the NG-air mixture. In this paper, a numerical study has been carried out on an automotive Diesel engine, modified by the authors in order to operate in both conventional Diesel combustion and DF NG-diesel mode. A previous experimental characterization of the engine is the basis for the CFD-3D modeling and calibration of the DF combustion process, using a commercial software. The effects on combustion stability and emissions of different NG-H2 mixtures (six blends with 5%, 10%, 15%, 20%, 25%, and 30% by volume of hydrogen) are numerically investigated at a low load (BMEP = 2 bar, engine speed 3000 rpm). The results of the CFD-3D simulations demonstrate that NG-H2 blends are able to decrease strongly CO, UHC, and CO2 emissions at low loads. Advantages are also found in terms of thermal efficiency and NOx emissions.

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“…The operation of an engine with HCNG fuel, compared to the use of a standard engine with a timing system (negative valve overlaps), designed for operation with conventional fuels such as diesel or gasoline, lessens the efficiency of using the alternative fuel, that is, HCNG, as shown in [83]. Only the effects of the use of a double pilot dose in dual-fuel engines have been investigated [84]. All of these factors affect the emissions of an engine powered by these fuels.…”

Section: Hcng Applicationsmentioning

confidence: 99%

A Review of Low-CO2 Emission Fuels for a Dual-Fuel RCCI Engine

2021

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This article discusses the problems of exhaust gas emissions in the context of the possibility of their reduction through the use of fuels with hydrogen as an additive or hydrotreatment. These fuels, thanks to their properties, may be a suitable response to more and more demanding restrictions on exhaust emissions. The use of such fuels in reactivity controlled dual fuel engines (RCCI) is currently the most effective way of using them in internal combustion (IC) engines. Low-temperature combustion in this type of engine allows the use of all modern fuels intended for combustion engines with high thermal efficiency. Thermal efficiency higher than in classic engines allows for additional reduction of CO2 emissions. In this work, the research on this subject was compiled, and conclusions were drawn as to further possibilities of popularizing the use of these fuels in a wide spectrum of applications and the prospect of using them on a mass scale.

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Gaseous and particle emissions in low-temperature combustion diesel–HCNG dual-fuel operation with double pilot injection

Cited by 16 publications

References 26 publications

Dataset for comparison between single and double pilot injection in diesel-natural gas dual fuel engine

Dataset for comparison between single and double pilot injection in diesel-natural gas dual fuel engine

Influence of H₂ enrichment for improving low load combustion stability of a Dual Fuel lightduty Diesel engine

A Review of Low-CO2 Emission Fuels for a Dual-Fuel RCCI Engine

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Gaseous and particle emissions in low-temperature combustion diesel–HCNG dual-fuel operation with double pilot injection

Cited by 16 publications

References 26 publications

Dataset for comparison between single and double pilot injection in diesel-natural gas dual fuel engine

Dataset for comparison between single and double pilot injection in diesel-natural gas dual fuel engine

Influence of H2 enrichment for improving low load combustion stability of a Dual Fuel lightduty Diesel engine

A Review of Low-CO2 Emission Fuels for a Dual-Fuel RCCI Engine

Contact Info

Product

Resources

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Influence of H₂ enrichment for improving low load combustion stability of a Dual Fuel lightduty Diesel engine