Parametric study on combustion characteristics of virtual HCCI engine fueled with methane–hydrogen blends under low load conditions

Yoon, Wonjun; Park, Jungsoo

doi:10.1016/j.ijhydene.2019.04.137

Cited by 22 publications

(7 citation statements)

References 16 publications

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“…Ignition gets advanced by 2°CA for a hydrogen induction percentage of 20%, whereas the peak in‐cylinder pressure increases by 1.5% and 3% for a hydrogen induction percentage of 20% for 1000 and 1500 rpm operating speeds, respectively. Combustion duration (CA90‐CA10) decreases by 12% with an increase in hydrogen induction of 15% due to a quicker reaction rate of hydrogen at all operating speeds 93 . Variations of HRR, in‐cylinder pressure, combustion duration, and combustion phasing with percentage hydrogen induction are illustrated in Figures 9–12.…”

Section: Combustion Of Hydrogen In the Presence Of Different Pilot Fu...mentioning

confidence: 99%

“…95 Yoon and Park investigated the combustion properties of an HCCI engine fueled with CH 4 . 93 HCCI combustion, in general, needs a high compression ratio for the autoignition requirement of the combustible mixture. However, the use of high compression ratio results knocking phenomenon and is limited by the use of CH 4 with high octane value.…”

Section: Effect Of Compression Ratiomentioning

confidence: 99%

“…Combustion duration (CA90-CA10) decreases by 12% with an increase in hydrogen induction of 15% due to a quicker reaction rate of hydrogen at all operating speeds. 93 Variations of HRR, in-cylinder pressure, combustion duration, and combustion phasing with percentage hydrogen induction are illustrated in Figures 9-12.…”

Section: Effect Of Percentage Induction Of Hydrogenmentioning

confidence: 99%

See 2 more Smart Citations

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

Das,

Debnath,

Negi

et al. 2023

Energy Science & Engineering

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The current study presents research investigations and developments related to the homogeneous charge compression ignition (HCCI) engine. Research investigations and recent advances, including the role of various operating conditions on HCCI engine combustion phenomena, emissions, and performance, are discussed. There is growing research interest in investigating HCCI engines with diesel fuel to study combustion, emissions, and performance characteristics due to their association with low NOx emissions. In the published literature, research investigations are also conducted with different fuels ranging from biomass to diesel to gasoline in the HCCI engine showing its capability for utilizing various fuels in coming years. The challenges associated with HCCI combustion are reviewed, and the details of excessive carbon monoxide and unburnt hydrocarbon emissions are discussed. The major parameters affecting the hydrogen addition in HCCI diesel engines are also discussed. Overall, adding hydrogen to a diesel‐fueled HCCI engine improves combustion phasing and can potentially increase thermal efficiency while lowering emissions. In addition, the strength, weaknesses, opportunities, and threat analysis is provided and discussed thoroughly.

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Section: Combustion Of Hydrogen In the Presence Of Different Pilot Fu...mentioning

confidence: 99%

Section: Effect Of Compression Ratiomentioning

confidence: 99%

Section: Effect Of Percentage Induction Of Hydrogenmentioning

confidence: 99%

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A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

Das,

Debnath,

Negi

et al. 2023

Energy Science & Engineering

View full text Add to dashboard Cite

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“…Homogenous charge compression ignition (HCCI) is an effective combustion mode that combines the advantages of the high-efficiency compression ignition in diesel engines and the fuel premixing in gasoline engines. [2][3][4][5] In fact, HCCI has been extended to include various generalized combustion modes, including premixed charged compression ignition (PCCI), [6][7][8][9] lowtemperature combustion, [10][11][12][13] and partially premixed combustion (PPC), [14][15][16][17] and can achieve low NOx and soot emissions as well as high thermal efficiency. [18][19][20][21] Gasoline compression ignition (GCI) is one of the attendant combustion modes, and authors such as Dempsey et al, 22 Sellnau et al, 23 and Loeper et al 24 have demonstrated that GCI combustion can achieve high thermal efficiency and low emission under partload conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of intake temperature and coolant temperature with injection strategy on gasoline compression ignition combustion stability under the idle condition

Zou

et al. 2022

International Journal of Engine Research

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The gasoline compression ignition (GCI) is deemed to be one of the effective ways to achieve efficient and clean combustion. However, the low in-cylinder temperature under idle and low-load conditions leads to certain problems, such as difficulties in the ignition and unstable combustion. In this paper, based on a refitted single-cylinder diesel engine, the combustion stability of the GCI mode under idling speed and low-load conditions was studied. The combustion stability and thermal efficiency were improved by adjusting the intake temperature, the coolant temperature and the injection strategy. During the test, the engine speed was set to 800 rpm at the idle condition and 1300 rpm at the low-load condition, and the gross indicated mean effective pressure was 5.5 bar. The injection mode of the fuel was direct injection with one injector. The results indicated that when the injection timing was −15°CA ATDC, and the intake temperature was increased from 50°C to 60°C under the idle condition; the gross indicated thermal efficiency (ITEg) was 39.7%, an increase of 8.5%. Under the low-load condition, increasing the coolant temperature can improve the combustion stability. Specifically, when the coolant temperature was increased from 70°C to 90°C and the injection timing was −27°CA ATDC, an ITEg of 52.1% can be realized.

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“…Homogeneous charge compression ignition (HCCI) has the characteristics of multipoint simultaneous ignition and rapid combustion [14], which could shorten the combustion duration and the after-combustion period [15], increase thermal efficiency, and improve fuel economy. However, the large pressure rise rate caused by fast heat transfer will cause the engine rough running and knocking [16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Negative Valve Overlap on Combustion and Emissions of CNG-Fueled HCCI Engine with Hydrogen Addition

Zhang

Liu

et al. 2021

International Journal of Aerospace Engineering

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In order to study the effect of negative valve overlap on combustion and emission characteristics of a homogeneous charge compression ignition engine fueled with natural gas and hydrogen, the test and the simulation were conducted using an engine cycle model coupling the chemical kinetic reaction mechanism under different valve timing conditions. Results show that the internal EGR formed by using negative valve overlap could heat the inlet mixtures and improve the spontaneous ignition characteristic of the engine. The residual exhaust gas could slow down the heat release rate, decrease the pressure rise rate and the maximum combustion temperature, and reduce the NOx emission simultaneously. Among the three NVO schemes, the strategy of changing the intake valve opening timing individually can create the least power loss, and the symmetric NVO strategy which changes both the exhaust valve closing timing and the intake valve opening timing simultaneously can achieve the best heating effect of inlet mixtures and the satisfactory decrease of combustion temperature, as well as the largest reduction of NOx emission.

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Parametric study on combustion characteristics of virtual HCCI engine fueled with methane–hydrogen blends under low load conditions

Cited by 22 publications

References 16 publications

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

A comprehensive review into the effects of different parameters on the hydrogen‐added HCCI diesel engine

Effect of intake temperature and coolant temperature with injection strategy on gasoline compression ignition combustion stability under the idle condition

Effect of Negative Valve Overlap on Combustion and Emissions of CNG-Fueled HCCI Engine with Hydrogen Addition

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