The effect of the initial charge temperature under various injection timings on the second law terms in a direct injection SI hydrogen engine

Fathi, V.; Nemati, Arash; Khalilarya, Shahram; Jafarmadar, Samad

doi:10.1016/j.ijhydene.2011.01.001

Cited by 23 publications

(5 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A zero‐dimensional, single zone combustion model due to the more efficiency, less complexity and less time‐consuming meanwhile commonly yielding similar results was applied in this study. The purpose of this model was to understand the phenomenon that occurs during a combustion cycle, from the intake fuel entry to the end of exhaust process . The net heat release rate

true({d Q}_{normaln normale normalt} / d θ true)

and heat transfer to cylinder wall

(|, {d Q}_{normalw normala normall normall} / d θ)

are major parameters.…”

Section: Methodsmentioning

confidence: 99%

Experimental and simulation investigation of effect of biodiesel‐diesel blend on performance, combustion, and emission characteristics of a diesel engine

Niaki

Mahdavi

Mouallem

2017

Env Prog and Sustain Energy

View full text Add to dashboard Cite

In order to reduce the harmful effect on the environment, using the oxygenated fuels such as biofuel blends as fuel has been on the spotlights for the internal combustion engines. For this rationale; the diesel engine operated with blends of sunflower biodiesel and diesel fuel (blending of 0%, 10%, 20%, and 100% biodiesel fuel with conventional diesel fuel). In this study, an experimental and numerical model for Heat release rate (HRR) and the characteristic performance of diesel engine such as cylinder pressure and emission characteristics (NOx, CO, and HC) in internal combustion engines is presented. To ensure the integrity of modeling, the results were compared with the experimental results. This comparison indicated a good agreement between the two. A Gaussian and Fourier series of second order was used to define a function relating the pressure and emission characteristics. Presented numerical model, implemented in proprietary software AVL FIRE, is able to capture chemical phenomena and to predict pollutant emission concentration trends. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1540–1550, 2018

show abstract

true({d Q}_{normaln normale normalt} / d θ true)

and heat transfer to cylinder wall

(|, {d Q}_{normalw normala normall normall} / d θ)

are major parameters.…”

Section: Methodsmentioning

confidence: 99%

Experimental and simulation investigation of effect of biodiesel‐diesel blend on performance, combustion, and emission characteristics of a diesel engine

Niaki

Mahdavi

Mouallem

2017

Env Prog and Sustain Energy

View full text Add to dashboard Cite

show abstract

“…However, during the process of combustion, the fuel is not combined with oxygen vigorously, and molecules are not realigned . In other word, hydrocarbons have a “cage‐like” structure, that is why during the combustion process, oxidizing of their inner carbon atoms is limited. This shortage of oxygen prevents the fuel combustion.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of effects of magnetic field on performance, combustion, and emission characteristics of a spark ignition engine

Niaki

Zadeh

Niaki³

et al. 2019

Env Prog and Sustain Energy

View full text Add to dashboard Cite

This article presents a comprehensive experimental work for the application of permanent magnets with the intensity of 9,000 G to a four‐stroke four cylinders gasoline engine on fuel lines at a location near to the combustion chamber. By using the permanent magnet, the liquid fuel disintegrates into small diameter, and de‐clustering of the fuel molecules of hydrocarbon has been proved to provide better atomization of the fuel, which makes sure that the fuel strenuously combines with oxygen and results in complete and more efficient burning process inside the combustion chamber. The experimental analysis revealed that magnetic treatment has improved performance and emission characteristics. Analysis over the engine test results with magnetic fuel conditioning showed that the reduction of 4–12% in fuel consumption and reduction in 11, 10, 18, and 10% for CO, CO2, HC, and NOx emissions, respectively, compared to gasoline fuel without magnetic condition. Further, we experimentally investigated the performance of petrol engine parameters such as in‐cylinder temperature and pressure, cylinder, and head cylinder temperature, the temperature of different parts of the piston. As a whole, magnetic fuel treatment has improved combustion and reduced the harmful pollutants of the compression ignition engine.

show abstract

“…Another aspect of this study revolves around exergetic examination of the engine as different divergent split injection implemented. In recent years, couple of works have been performed with incorporation of the second law of thermodynamics in diesel engines [13][14][15][16], homogenous charge compression ignition (HCCI) engines [17], spark ignition (SI) engines [18,19], and some of them are devoted to exergetic analyses of blended fuels in engines [20]. In the field of exergy evaluation, Kul and Kahraman [21] explored a diesel engine fueled with biodiesel-diesel-5% ethanol in terms of energy and exergy.…”

Section: Introductionmentioning

confidence: 99%

Improved mixture quality by advanced dual-nozzle, included-angle split injection in HSDI engine: Exergetic exploration

Taghavifar

Nemati

Salvador

et al. 2019

Energy

View full text Add to dashboard Cite

A Ford 1.8 l high speed diesel engine (HSDI) is utilized for a thorough investigation on split dual injection with two included-angle nozzles. The system is equipped with variablegeometry turbocharging (VGT) and high-pressure common-rail (HPCR) technologies which lets multi-injections per cycle. The share of fuel between pulses is divided in three portions of 70-30, 80-20, and 90-10 with included angles of 10, 20, and 30 while the dwell time between pulses are 5CA, 10CA, 15CA, and 20CA. The results demonstrate that the optimum option is 70 (5) 30-30deg with the best homogeneity of mixture (UI = 0.9742) and peak temperature (Tmax = 2011.58 K) that yield maximum thermo-mechanical exergy amounting to 439 J. In addition, the highest amount of accumulative irreversibility happens for 90 (10) 10-20deg. It is found that there is a relation between mixture uniformity and accumulative work/heat exergy, whereas high rate of pressure rise (RPR) contribute to irreversibility rate or exergy destruction in diesel engine, i.e. RPR (80-20) = 904.67 kPa/deg. More, the results are in agreement with literature reporting that higher in-cylinder temperature (Tmax (70 (5) 30-30deg) = 2011.58 K)) can possibly decrease the accumulative irreversibility (147.9 J).

show abstract

The effect of the initial charge temperature under various injection timings on the second law terms in a direct injection SI hydrogen engine

Cited by 23 publications

References 20 publications

Experimental and simulation investigation of effect of biodiesel‐diesel blend on performance, combustion, and emission characteristics of a diesel engine

Experimental and simulation investigation of effect of biodiesel‐diesel blend on performance, combustion, and emission characteristics of a diesel engine

Experimental investigation of effects of magnetic field on performance, combustion, and emission characteristics of a spark ignition engine

Improved mixture quality by advanced dual-nozzle, included-angle split injection in HSDI engine: Exergetic exploration

Contact Info

Product

Resources

About