Parametric study and optimization of the main engine calibration parameters and compression ratio of a methane-diesel dual fuel engine

Belgiorno, Giacomo; Blasio, Gabriele Di; Tunestål, Per

doi:10.1016/j.fuel.2018.02.038

Cited by 76 publications

(24 citation statements)

References 35 publications

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“…At low load, the substitution rate can reach as high as 40% and the reduction of power output is controlled at 5.7% less than the target power requirement with throttled control. This seems to attain an acceptable improvement of the substitution rate since no more than 30% of NG mass percentage is suggested by previous studies without throttle control at low load [8].…”

Section: Power Outputmentioning

confidence: 71%

“…At the same time, a split injection strategy provided an effective approach to accomplish the trade-off between NOx-CH 4 and NOx-CO emissions [7]. The influences of methane substitution ratio, the usage of exhaust gas recirculation (EGR) and pilot injection strategy on engine performance and emissions at low loads were studied in [8], and the study reported that the increase of methane substitution ratio obviously contributed to the high level of HC and CO emissions, the lower combustion rate and the lower combustion efficiency at low loads. The study of optimal operation strategies for the equivalence ratio of NG-air mixture and EGR rate at low loads was focused on, and the results revealed that it was impossible to run the engine with low emissions of CO 2 and HC simultaneously under low load conditions [9].…”

Section: Introductionmentioning

confidence: 99%

“…Factually, lowering the amount of excess air with throttle control effectively enables one to increase in-cylinder average mixture temperature and improve flame propagation [3], which provides an effective approach to improve the excess air ratio and engine performance. Moreover, to better control the excess air ratio a few studies on NG dual-fuel diesel engines have been reported to obtain proper air-fuel ratio regulation with control of the throttle opening [8,10,[14][15][16][17][18]. Unfortunately, little research has been done to extensively explore the effects of adjusting the excess air ratio on the dual-fuel combustion under light load.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine

et al. 2018

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Lowering the amount of excess air is believed to increase the density of the air-fuel mixture and help improve the combustion rate for compression ignition engines. This paper proposes an approach of adding a throttle body at the intake pipe to control the excess air ratio with reduction of air supply to achieve a better balance between the power, emissions and fuel efficiency at medium and low load of a natural gas dual-fuel diesel engine converted from a conventional diesel engine. Various experiments in both pure diesel and dual-fuel mode under intermediate engine speed are performed with the proposed critical method of excess air ratio control. The experimental results reveal that better excess air ratio is very beneficial for the power output and brake specific energy consumption in dual-fuel combustion under medium and low load conditions. Moreover, the substitution rate can reach as high as 40% under low load conditions with throttle control.

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Section: Power Outputmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine

et al. 2018

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“…NOx is a hazardous material that is formed at high combustion temperatures [70], but with increasing combustion temperature, HC and CO and particulate emissions are reduced [66,71]. The CO 2 emissions depend mainly on fuel consumption and fuel composition (C/H ratio) [72,73].…”

Section: Introductionmentioning

confidence: 99%

Internal Combustion Engine Analysis of Energy Ecological Parameters by Neutrosophic MULTIMOORA and SWARA Methods

et al. 2019

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The investigation for new innovative solutions to reduce transport pollution is a priority for the European Union (EU). This study includes energy and a sustainable environment, as well as transport, logistics, and information and communication technologies. Energy ecological parameters of internal combustion depend on many factors: fuel, the fuel injection time, engine torque, etc. The engine’s energy ecological parameters were studied by changing engine torques, using different fuels, and changing the start of the fuel injection time. The selection of the optimum parameters is a complex problem. Multicriteria decision-making methods (MCDM) present powerful and flexible techniques for the solution of many sustainability problems. The article presents a new way of tackling transport pollution. The analysis of the energy ecological parameters of the experimental internal combustion engine is performed using the neutrosophic multi-objective optimization by a ratio analysis plus the full multiplicative form (MULTIMOORA) and step-wise weight assessment ratio analysis (SWARA) methods. The application of MCDM methods provides us with the opportunity to establish the best alternatives which reflect the best energy ecological parameters of the internal combustion engine.

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“…A gas-diesel cycle could be accomplished with many gas fuels: liquefied petroleum gas -LPG (mixture of propane and butane), compressed natural gas -CNG (methane), hydrogen -H 2 , etc. [1][2][3][4]. Hydrogen has a number of properties [5,6], which make it one of the most perspective alternative fuels for internal combustion engines:…”

Section: Introductionmentioning

confidence: 99%

A study of hydrogen fuel impact on compression ignition engine performance

et al. 2018

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In this paper, a dual-fuel compression ignition engine test bench is presented. In hydrogen-diesel fuel co-combustion conditions, the engine parameters are determined – performance: effective torque, effective power and mean effective pressure; fuel economy: fuel consumption and specific fuel consumption; toxicity: carbon monoxide, carbon dioxide, nitrogen oxides, hydrocarbons, and smoke emissions (opacity). The impact of hydrogen-diesel fuel mass ratio on the performance, toxicity and economy of the engine is studied by obtaining a series of hydrogen-diesel fuel ratio variation characteristics at constant engine speed and load. Improvement of the economical parameters of the engine and reduction of carbon dioxide concentration in exhaust gases is detected under operation with hydrogen gas fuel. Significant reduction of the exhaust gases opacity is observed. It is not clear what the impact of the quantity of hydrogen, injected in the engine, on the concentration of nitrogen oxides in the exhaust gases is.

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Parametric study and optimization of the main engine calibration parameters and compression ratio of a methane-diesel dual fuel engine

Cited by 76 publications

References 35 publications

Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine

Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine

Internal Combustion Engine Analysis of Energy Ecological Parameters by Neutrosophic MULTIMOORA and SWARA Methods

A study of hydrogen fuel impact on compression ignition engine performance

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