Hydrogen-diesel fuel co-combustion strategies in light duty and heavy duty CI engines

Talibi, Midhat; Hellier, Paul; Morgan, Rod; Lenartowicz, Christopher; Ladommatos, Nicos

doi:10.1016/j.ijhydene.2018.03.176

Cited by 60 publications

(11 citation statements)

References 39 publications

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“…The local richer mixture and the increase of water vapor molar fraction in the combustion products, with an influence on burned gas temperatures, may explain the decrease of NO x emissions. A similar phenomenon regarding NO x emissions was reported previously [23,24,[28][29][30], showing that, in general, the NO x level starts to decrease when hydrogen is used, but that increasing the hydrogen quantity may increase the NO x emission level. This is in accordance with the increases in combustion temperature and thermal losses [28]; consequently, the emission level is influenced by the quantity of hydrogen [30], and small hydrogen quantities are recommended [28][29][30].…”

Section: Resultssupporting

confidence: 86%

“…The decrease in the combustion rate of diffusive formed mixtures up to 26% with hydrogen fuel was in correlation with the reduction of the smoke emission level; see Figure 10. Similar tendencies regarding the reduction of pollutant emissions levels have been reported in papers describing the effects of hydrogen use in ICE [23,24,[27][28][29][30]52,53,55,56].…”

Section: Resultssupporting

confidence: 79%

“…Regarding the engine thermal efficiency, it has been observed that it increases with an increase in the hydrogen quantity in the diesel fuel blend, due to the improvement of the combustion process [30,31]. For greater engine loads (60-80%), the thermal efficiency sharply decreases because of the incomplete combustion of a rich mixture [32][33][34].…”

Section: Overview Of Hydrogen Utilization In Automotivesmentioning

confidence: 99%

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Hydrogen—An Alternative Fuel for Automotive Diesel Engines Used in Transportation

et al. 2020

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Considering the current environmental restrictions, particularly those imposed on fossil fuel exploitation, hydrogen stands out as a very promising alternative for the power and transportation sectors. This paper investigates the effects of the employment of hydrogen in a K9K automotive diesel engine. Experiments were conducted at a speed of 2000 min−1 with various engine load levels of 40%, 55%, 70%, and 85%; several quantities were monitored to evaluate the performance with hydrogen use in terms of brake-specific energetic consumption (BSEC), fuel economy, maximum pressure, and heat-release characteristics. It was found that at 55% engine load, the engine efficiency increased by 5.3% with hydrogen addition, achieving a diesel fuel economy of 1.32 kg/h. The rate of increase of the peak pressure and maximum pressure started to increase as a consequence of the higher fuel quantity that burned in the premixed combustion phase, while still remaining within reliable operational limits. The accelerated combustion and augmented heat release rate resulted in a combustion duration that was reduced by 3° CA (crank angle degree), achieving a mass fraction burned percentage of 10% to 90% earlier in the cycle, and the combustion variability was also influenced. Hydrogen use assured the decrease of CO2, HC, NOx, and smoke emission levels in comparison with classic fueling.

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Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 79%

Section: Overview Of Hydrogen Utilization In Automotivesmentioning

confidence: 99%

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Hydrogen—An Alternative Fuel for Automotive Diesel Engines Used in Transportation

et al. 2020

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“…Furthermore, experiments in light-duty and heavy-duty diesel engines showed that the addition of H 2 increased NO x emissions in the former case. However, NO x emissions slightly decreased in the heavy-duty engine while CO and particulate emissions decreased in both engines [ 29 ]. Finally, a study assessed the influence of Hydrogen Energy Share (HES) in a diesel engine.…”

Section: Introductionmentioning

confidence: 99%

Experimental assessment of performance and emissions for hydrogen-diesel dual fuel operation in a low displacement compression ignition engine

Estrada

Moreno

Gonzalez‐Quiroga

et al. 2022

Heliyon

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“…21 Some previous studies related to H 2 addition/substitutions in a diesel engine have been carried out by Herna´ndez and collegues [22][23][24] and others. [25][26][27] In these publications, a slight increase in NOx emissions and a decrease in efficiency apart from the obvious sharply reduction in PM and CO 2 emissions are observed. As NOx increases when H 2 is added, some techniques such as high exhaust gas recirculation (EGR) rates 28 or N 2 addition 29,30 are used to reduce its emission in dual-fuel engines.…”

Section: Introductionmentioning

confidence: 97%

Autoignition of diesel-like fuels under dual operation with H₂

Hernández

Salvador

Cova-Bonillo

2019

Advances in Mechanical Engineering

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The partial replacement of diesel fuel with gaseous fuels in diesel engines allows for reducing soot, increasing the renewable fraction of the fuel and decreasing CO 2 emissions. Hydrogen is a promising alternative; since it is a non-carbon compound, it can be produced from renewable sources and it has suitable combustion properties. However, the use of hydrogen in diesel engines could require some modifications on the engine calibration. Among the different phenomena involved in diesel combustion, autoignition significantly affects the engine efficiency. This work analyzes the autoignition behavior of diesel and biodiesel fuels under a H 2-rich ambient. Two different liquid fuel replacements (10% and 20% by energy) have been tested in a constant-volume combustion chamber. Three different chamber temperatures (535°C, 602°C, and 650°C) and equivalence ratios (0.4, 0.6, and 0.8) have been checked. Results show that, in the case of diesel fuel, hydrogen delays autoignition and reduces the combustion rate, the latter caused by a higher fuel dilution with air. The influence of H 2 in the autoignition of biodiesel is less significant. A reduction in the OH radicals pool appears as the main reason for retarding ignition. The lower pressure peaks with hydrogen suggest unburnt hydrogen to be relevant.

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Hydrogen-diesel fuel co-combustion strategies in light duty and heavy duty CI engines

Cited by 60 publications

References 39 publications

Hydrogen—An Alternative Fuel for Automotive Diesel Engines Used in Transportation

Hydrogen—An Alternative Fuel for Automotive Diesel Engines Used in Transportation

Experimental assessment of performance and emissions for hydrogen-diesel dual fuel operation in a low displacement compression ignition engine

Autoignition of diesel-like fuels under dual operation with H₂

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Hydrogen-diesel fuel co-combustion strategies in light duty and heavy duty CI engines

Cited by 60 publications

References 39 publications

Hydrogen—An Alternative Fuel for Automotive Diesel Engines Used in Transportation

Hydrogen—An Alternative Fuel for Automotive Diesel Engines Used in Transportation

Experimental assessment of performance and emissions for hydrogen-diesel dual fuel operation in a low displacement compression ignition engine

Autoignition of diesel-like fuels under dual operation with H2

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Product

Resources

About

Autoignition of diesel-like fuels under dual operation with H₂