Hydrogen energy share improvement along with NOx (oxides of nitrogen) emission reduction in a hydrogen dual-fuel compression ignition engine using water injection

Chintala, Venkateswarlu; Subramanian, K.A.

doi:10.1016/j.enconman.2014.03.075

Cited by 94 publications

(40 citation statements)

References 29 publications

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“…They succeeded to enhance the H 2 energy share up to 66% with an addition of large amount of water of 2460 lpm. The main reason, for the enhancement of H 2 energy share with WDM, is the reduction in the in-cylinder peak temperature with addition of water [18]. The water particles in the combustion chamber absorbed the heat generated during oxidation of fuel, due to which the in-cylinder temperature decreased drastically (Fig.…”

Section: With Water Added Dual-fuel Mode (Wdm)mentioning

confidence: 96%

“…Water addition in H 2 dual-fuel engines is a viable option for solving the twin problem of limited H 2 energy share and high level of NO x emission; because the water reduces the in-cylinder temperature and correspondingly reaction rate of fuel during combustion [18]. Induction of water in a H 2 dual-fuel engine increased the knock restricted power output due to reduction of the unburned air-fuel charge temperature [19].…”

Section: Literature Review On Water Addition In Dual-fuel Enginesmentioning

confidence: 99%

“…As the temperature inside the cylinder is higher than the saturation temperature of water, the water converts to superheated steam during combustion process [18]. Among the available three distinct forms of heat (sensible heat, latent heat, and superheat), the degree of superheat contributes a major share toward temperature reduction of the air-fuel charge with addition of water [18]. At 18% H 2 energy share, the cumulative heat release rate decreased from 1851.1 J/cycle with DDM to 1776.5 J/cycle with WDM.…”

Section: With Water Added Dual-fuel Mode (Wdm)mentioning

confidence: 99%

“…(2) [18]. With the addition of water into the engine, the combustion reaction could be modified as Eq.…”

Section: Experimental Test Proceduresmentioning

confidence: 99%

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An effort to enhance hydrogen energy share in a compression ignition engine under dual-fuel mode using low temperature combustion strategies

Chintala

Subramanian

2015

Applied Energy

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Section: With Water Added Dual-fuel Mode (Wdm)mentioning

confidence: 96%

Section: Literature Review On Water Addition In Dual-fuel Enginesmentioning

confidence: 99%

Section: With Water Added Dual-fuel Mode (Wdm)mentioning

confidence: 99%

“…(2) [18]. With the addition of water into the engine, the combustion reaction could be modified as Eq.…”

Section: Experimental Test Proceduresmentioning

confidence: 99%

See 2 more Smart Citations

An effort to enhance hydrogen energy share in a compression ignition engine under dual-fuel mode using low temperature combustion strategies

Chintala

Subramanian

2015

Applied Energy

Self Cite

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“…As a promising alternative fuel and combustion mode, water emulsified diesel fuel has attracted much attention in engine research [1,2]. The in-cylinder temperature of diesel engines fuelled with water emulsified diesel could be significantly decreased due to the large latent heat of vaporization [3] and specific heat [4] of water, leading to a simultaneous reduction in NO x and soot emissions.…”

Section: Introductionmentioning

confidence: 99%

Evaporation and Ignition Characteristics of Water Emulsified Diesel under Conventional and Low Temperature Combustion Conditions

Wang

Huang

et al. 2017

Energies

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Abstract:The combination of emulsified diesel and low temperature combustion (LTC) technology has great potential in reducing engine emissions. A visualization study on the spray and combustion characteristics of water emulsified diesel was conducted experimentally in a constant volume chamber under conventional and LTC conditions. The effects of ambient temperature on the evaporation, ignition and combustion characteristics of water emulsified diesel were studied under cold, evaporating and combustion conditions. Experimental results showed that the ambient temperature had little effect on the spray structures, in terms of the liquid core length, the spray shape and the spray area. However, higher ambient temperature slightly reduced the Sauter Mean Diameter (SMD) of the spray droplets. The auto-ignition delay time increased significantly with the decrease of the ambient temperature. The ignition process always occurred at the entrainment region near the front periphery of the liquid core. This entrainment region was evolved from the early injected fuel droplets which were heated and mixed by the continuous entrainment until the local temperature and equivalence ratio reached the ignition condition. The maximum value of integrated natural flame luminosity (INFL) reduced by 60% when the ambient temperature dropped from 1000 to 800 K, indicating a significant decrease of the soot emissions could be achieved by LTC combustion mode than the conventional diesel engines.

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Effect of different hydrogen blending ratios on combustion process of gasoline‐fueled rotary engine

Pan

Huang

et al. 2019

Env Prog and Sustain Energy

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The pre‐eminent gasoline rotary engine may be criticized for its unsatisfactory fuel consumption rate and unburnt emissions. The clean and renewable hydrogen fuel is a promising alternative for conventional fuels to improve the combustion process and power performance of the rotary engine. In this article, highly advanced numerical simulation was used to obtain some pivotal results such as the distribution of combustion intermediates, the turbulent kinetic energy, the kinetic rate of reactions, and the fuel concentration fields which are difficult to experimentally achieve. An experimentally validated three‐dimensional dynamic simulation model of a rotary engine coupled with chemical kinetics skeletal mechanism was set up to exactly investigate the effects of hydrogen blending on the combustion process, power performance, and pollutant emissions. The results showed that with the increase of hydrogen mixing ratio, the average pressure and the peak pressure increased in the combustion process. Meanwhile, more combustion active intermediates were generated in both the flame development period and flame propagation period. The mass fraction of OH and H radicals has an increase of 36% and 34%, respectively. The fuel combustion rate rose and the turbulent kinetic energy increased which are conducive to improving flame diffusion in the rear part of the chamber and thus facilitate the complete combustion of the fuel. Moreover, the hydrogen blending led to an effective reduction in the CO emission of gasoline‐fueled rotary engine; however, the NO emission slightly increased due to the rise of temperature in cylinder. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Hydrogen energy share improvement along with NOx (oxides of nitrogen) emission reduction in a hydrogen dual-fuel compression ignition engine using water injection

Cited by 94 publications

References 29 publications

An effort to enhance hydrogen energy share in a compression ignition engine under dual-fuel mode using low temperature combustion strategies

An effort to enhance hydrogen energy share in a compression ignition engine under dual-fuel mode using low temperature combustion strategies

Evaporation and Ignition Characteristics of Water Emulsified Diesel under Conventional and Low Temperature Combustion Conditions

Effect of different hydrogen blending ratios on combustion process of gasoline‐fueled rotary engine

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