Effects on Knock Intensity and Specific Fuel Consumption of Port Water/Methanol Injection in a Turbocharged GDI Engine: Comparative Analysis

Breda, Sebastiano; Berni, Fabio; D'Adamo, Alessandro; Testa, F.J.; Severi, Elena; Cantore, Giuseppe

doi:10.1016/j.egypro.2015.11.888

Cited by 34 publications

(16 citation statements)

References 4 publications

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“…Study done by Breda et al, on the water and ethanol mixture injection into the GDI engine has shown how the intake cooling effect by different types of cooling agent influences the knocking occurrence in engine operation. The study analyzes the best mixture to avoid knocking and found out injecting pure water can lead to lowering the knocking tendency [7]. Turbocharged engine has higher density of intake air, thus it will give higher pressure and temperature with higher temperature the tendency of knocking is high.…”

Section: Water Injectionmentioning

confidence: 99%

Engine Characteristics Analysis of Turbocharged Spark Ignition Engine with Water Injection Charge Air Cooling

Kamaludin¹,

Mamat²,

Mohamed³

2020

ARFMTS

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This paper presents the effect of engine performance by water injection charged air cooling. Water was injected into the intake manifold with different flowrate in a turbocharged spark ignition engine. The simulation was done on a validated engine modelling using GT-Power simulation that was based on a 1.6L turbocharged CamPro CFE engine. Two injectors were used to inject the water into the intake manifold. The addition of water injection shows potential to improve the engine operation characteristics. Improvement of brake torque as much as 19% and brake power as much as 10% have proven that the charged air cooling has improved the turbocharged engine. In this this study, the charged air intake raises the air density in the combustion chamber and has improved the brake specific fuel consumption as much as 23%. With the introduction of water to the upstream of the engine operation, the cooling effect does assist the engine to improve.

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Section: Water Injectionmentioning

confidence: 99%

Engine Characteristics Analysis of Turbocharged Spark Ignition Engine with Water Injection Charge Air Cooling

Kamaludin¹,

Mamat²,

Mohamed³

2020

ARFMTS

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“…The current project is a cumulative work of these research papers in combination to reduce the overall emissions Busuttil et al [1] experimentally investigated the optimum quantity of water to be injected for a particular engine. The experimentation was done using a combination of injectors and a specially designed circuit Breda et al [2] investigated using CFD analysis the solutions to increase the knock resistance. Methanol, water or a combination of both is added to the intake manifold to maintain the knock resistance.…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental Study on the Effect of Water Injection in an Internal Combustion Engine

Iyer¹,

Rane²,

Upasani³

et al. 2017

IREME

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The Emissions from combustion of fuels such as petrol and diesel in I.C. engines and the particulate matter released have been major part of the air pollution sources, especially in urban areas. It has always been the cause of severe public health issues for so long. A lot of research has been carried out in the field of reduction of these pollutants since diesel engines came into prime use. The Main emissions from a diesel engine are Oxides of Nitrogen (NOx), Carbon Monoxide (CO), Oxides of Sulphur (SOx) and particulate matter (PM). The use of an emulsion of diesel in water as a fuel has been a recent subject of study in this sector. Without compromising on the engine's performance, Water/diesel (W/D) emulsified formulations have evidently reduced the emissions of CO, SOx, NOx and particulate matter (PM) significantly. The depleting amount of Natural resources like natural gas, petroleum oil is evident by the ever escalating prices of crude oil, and is increased by transportation losses viz. leakages and oil spills. The fuel efficiency of the vehicle is the key factor while purchasing new vehicle

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“…For example, focusing on Gasoline Direct Injection (GDI) engines, spray directly affects air-fuel mixing [1][2][3] and, thus, combustion [4,5], knock [6,7], and emissions [8]. Moreover, knock suppressor techniques such as water (or water/methanol) injection are more and more diffused [9][10][11][12]. In this case, a detailed numerical representation of the water spray is mandatory to properly predict water evaporation or even phenomena such as liquid film formation on the intake ports, which impact on the effectiveness of water injection itself.…”

Section: Introductionmentioning

confidence: 99%

Impact of the Primary Break-Up Strategy on the Morphology of GDI Sprays in 3D-CFD Simulations of Multi-Hole Injectors

et al. 2019

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The scientific literature focusing on the numerical simulation of fuel sprays is rich in atomization and secondary break-up models. However, it is well known that the predictive capability of even the most diffused models is affected by the combination of injection parameters and operating conditions, especially backpressure. In this paper, an alternative atomization strategy is proposed for the 3D-Computational Fluid Dynamics (CFD) simulation of Gasoline Direct Injection (GDI) sprays, aiming at extending simulation predictive capabilities over a wider range of operating conditions. In particular, attention is focused on the effects of back pressure, which has a remarkable impact on both the morphology and the sizing of GDI sprays. 3D-CFD Lagrangian simulations of two different multi-hole injectors are presented. The first injector is a 5-hole GDI prototype unit operated at ambient conditions. The second one is the well-known Spray G, characterized by a higher back pressure (up to 0.6 MPa). Numerical results are compared against experiments in terms of liquid penetration and Phase Doppler Anemometry (PDA) data of droplet sizing/velocity and imaging. CFD results are demonstrated to be highly sensitive to spray vessel pressure, mainly because of the atomization strategy. The proposed alternative approach proves to strongly reduce such dependency. Moreover, in order to further validate the alternative primary break-up strategy adopted for the initialization of the droplets, an internal nozzle flow simulation is carried out on the Spray G injector, able to provide information on the characteristic diameter of the liquid column exiting from the nozzle.

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Effects on Knock Intensity and Specific Fuel Consumption of Port Water/Methanol Injection in a Turbocharged GDI Engine: Comparative Analysis

Cited by 34 publications

References 4 publications

Engine Characteristics Analysis of Turbocharged Spark Ignition Engine with Water Injection Charge Air Cooling

Engine Characteristics Analysis of Turbocharged Spark Ignition Engine with Water Injection Charge Air Cooling

Experimental Study on the Effect of Water Injection in an Internal Combustion Engine

Impact of the Primary Break-Up Strategy on the Morphology of GDI Sprays in 3D-CFD Simulations of Multi-Hole Injectors

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