An experimental investigation on combustion and performance characteristics of supercharged HCCI operation in low compression ratio engine setting

Polat, Seyfi; Yücesu, H. Serdar; Uyumaz, Ahmet; Kannan, Kaushik; Shahbakhti, Mahdi

doi:10.1016/j.applthermaleng.2020.115858

Cited by 33 publications

(11 citation statements)

References 66 publications

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“…As a result, maximum heat release and in‐cylinder pressure increase. Polat et al 87 also reported that CA50 was advanced up to 9°CA bTDC at 160 kPa of intake manifold absolute pressures and the combustion duration gets shortened. With 2‐bar boost pressure, NO x is one order of magnitude lesser than the naturally aspirated condition.…”

Section: Parameter Affecting the Hydrogen Addition In Hcci Diesel Enginementioning

confidence: 96%

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: Parameter Affecting the Hydrogen Addition In Hcci Diesel Enginementioning

confidence: 96%

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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“…For this reason, it increases the pressure rise rate, noise, and vibration. The limits of knocking zones at high loads must be determined to specify the appropriate operating range [10,11]. The low exhaust temperature and high AFR at the low load limit can cause a misfire and increase the ignition delay [12].…”

Section: Figure 1 Three Combustion Modes [7]mentioning

confidence: 99%

Investigation of conversion of a diesel engine to homogeneous charge compression ignition engine using n-heptane: A zero-dimensional modeling

Kethudaoglu,

Aktaş,

Karaaslan

et al. 2023

International Journal of Energy Studies

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Numerical methods are commonly used for analyzing combustion characteristics. Besides, they provide an opportunity to predict emissions of an engine. In this paper, the conversion of a single-cylinder diesel engine to HCCI combustion model is investigated with AVL Boost v2021R2. The model was used to simulate the power, emission, bsfc value. In-cylinder pressure results also are obtained from the model. Verification of the model is conducted with experimental data from the literature. The differentiation between the numerical and experimental results remained below 8.9% for the power, below 6.62% for bsfc. In addition to this, the model gave maximum pressure values with an accuracy of ± 1%, and maximum HRR values with an accuracy of ± 2%. Maximum HRR values and in-cylinder pressure curves for 1200-2400 rpm were obtained with acceptable accuracy. Besides, the operating range of an HCCI engine fueled with n-heptane was investigated using a zero-dimensional single-zone model with reduced fuel chemistry. The compression ratio and inlet air temperature effect on HCCI combustion were analyzed. The increasing the air inlet temperature to 40oC from 20oC , increases the lowest air-fuel ratio about 6.6% which the engine can operate without entering the knock zone, at 17.5 CR at 1200rpm.

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“…A high compression ratio (CR) can increase the temperature of the load during the compression phase, advancing the start of ignition, thus achieving high thermal efficiencies. However, detonation problems can occur with high CR, which are used particularly with low octane fuels and at high loads [19]. Ignition delay depends largely on the performance of the mixtures and is relatively independent of the engine's rotation speed, however, the speed has an impact on the HCCI operating range, because it reduces the time available for combustion, transfer of heat, gas exchange and other processes that affect operation: combustion will take place very quickly with increasing rotation, requiring an increase in cylinder temperature to ensure combustion at the desired point [20].…”

Section: Introductionmentioning

confidence: 99%

“…The composition of the fuel can vary according to the geographical region, the oil source and the refining process, therefore the characteristics of the combustion process and the oxidation reactions will be different for each type of fuel, as well [1]. From the perspective of HCCI combustion the differences that really matter are the characteristics of the overall combustion (combustion phase and duration) which control the main reaction time and reaction rate [19]. Fuel properties and engine operating conditions affect the limits of HCCI operation.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of homogeneous charge compression ignition in a light-duty diesel engine operated with commercial gasoline-ethanol

Guzmán,

Braga

2023

Preprint

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An experimental bench was designed and developed to carry out experimental tests of a Diesel cycle engine using gasoline as fuel. The engine (originally a diesel cycle) was fitted with different devices to run in HCCI mode. These modifications did not affect the engine's original condition, which can be returned to diesel mode at any time. Instrumentation was set up to measurement the temperature (exhaust gases, inlet charge inlet, lubricating oil), pressure (intake air, gasoline inlet, combustion chamber), torque, rpm, air flow and fuel flow. The engine was subjected to different operating conditions and control parameters to study and analyze the effects of engine speed, air-fuel ratio and mixture temperature (air-gasoline). The results indicate that higher temperatures or amounts of fuel cause an earlier ignition phase, which would have a direct influence on the beginning of combustion. The results also indicate that, by increasing the amount of fuel and varying the inlet temperature, more useful energy is generated until reaching the limit of the detonation zone. Small gains in combustion efficiency translate into significant energy savings, also reducing exhaust gas pollution levels.

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An experimental investigation on combustion and performance characteristics of supercharged HCCI operation in low compression ratio engine setting

Cited by 33 publications

References 66 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

Investigation of conversion of a diesel engine to homogeneous charge compression ignition engine using n-heptane: A zero-dimensional modeling

Experimental study of homogeneous charge compression ignition in a light-duty diesel engine operated with commercial gasoline-ethanol

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