Experimental evaluation of strategies to increase the operating range of a biogas-fueled HCCI engine for power generation

Bedoya, Iván D.; Saxena, Samveg; Cadavid, Francisco; Dibble, Robert W.; Wissink, Martin

doi:10.1016/j.apenergy.2012.01.008

Cited by 56 publications

(21 citation statements)

References 30 publications

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“…On brake specific basis, NO, smoke, HC, and CO in PPCCI mode were found to be comparable to those of dual fuel mode [30]. Low HC and CO emissions were reported for lean mixtures at increased inlet temperature and charge pressure [55]. Jun and Iida [88] observed that CO emissions can be reduced by increasing in-cylinder temperature in natural gas-based HCCI engines.…”

Section: Emission Indicesmentioning

confidence: 92%

“…They showed that biogas-DEE in HCCI mode offers wider operating load range and higher brake thermal efficiency at all loads compared to biogas-diesel dual fuel and biogas SI operation. Different strategies have been experimentally evaluated by Bedoya et al [55] in order to extend the operating range of a biogas fuelled HCCI engine and ensure safe operation and stable combustion. Oxygen enrichment at constant biogas flow rates and gasoline pilot injection were separately tested at the low load limit.…”

Section: Performance Indicesmentioning

confidence: 99%

“…This resulted in delayed combustion and lower energy release rates [30]. The effects of charge temperature, boost pressure, and equivalence ratio were investigated by Bedoya et al [55] using a biogas fuelled 4-cylinder engine in HCCI mode. It was reported that higher inlet pressures and temperatures reduce the selfignition temperature and provide higher burning rates [56].…”

Section: Combustion Indicesmentioning

confidence: 99%

“…The effects of injection timing, intake charge temperature, and biogas energy ratio were studied. The best injection timing, intake charge temperature, and biogas energy ratio were found to be [55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70] o BTDC, 50 -90 o C. and 80%, respectively. By advancing the diesel injection timing, the homogeneity of the lean mixtures was enhanced.…”

Section: Combustion Indicesmentioning

confidence: 99%

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A review on the purification and use of biogas in compression ignition engines

Feroskhan¹,

Ismail²

2022

Int. J. Automot. Mech. Eng.

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Biogas is commonly produced during the decay of organic matter. It is a mixture of methane and some non-combustible gases such as CO2 and H2S. Its viability as a renewable alternative fuel for internal combustion engines can be enhanced by methane enrichment, i.e. removal of the non-combustible constituents. One of the common techniques for using biogas in a compression ignition (CI) engine is to mix it with air in the intake manifold, induct, and compress this mixture and ignite it by injecting a small quantity of diesel or bio-diesel, which is termed as the pilot fuel. This is known as the dual fuel mode. The pilot fuel is injected close to the end of the compression stroke as in a conventional CI engine and the injected fuel quantity depends on the operating condition. An alternative approach is the Homogeneous Charged Compression Ignition (HCCI) mode. Here, a homogeneous mixture of biogas and air is inducted and compressed by the piston until it auto-ignites. While this concept combines the benefits of spark ignition (SI) and CI engines, the onset of combustion cannot be controlled directly. A detailed review of recent research pertaining to biogas purification techniques and operation of CI engines with biogas in dual fuel and HCCI modes is presented in this paper. The effects of various operating parameters on engine performance and emissions, and comparison with conventional diesel fuelled CI engines are discussed. Biogas improves combustion efficiency, NOx, and smoke emissions. However, it reduces brake thermal efficiency, volumetric efficiency, and increases HC and CO emissions. Biogas fuelling of CI engines is recommended for achieving high diesel substitution, especially under high torque operation.

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Section: Emission Indicesmentioning

confidence: 92%

Section: Performance Indicesmentioning

confidence: 99%

Section: Combustion Indicesmentioning

confidence: 99%

Section: Combustion Indicesmentioning

confidence: 99%

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A review on the purification and use of biogas in compression ignition engines

Feroskhan¹,

Ismail²

2022

Int. J. Automot. Mech. Eng.

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“…The experimental study was carried out in a constant volume combustion bomb, and compared with pure methane, the laminar burning characteristics of biogas were obtained. The combustion speed is the movement speed of the reaction zone corresponding to the non-combustible gas mixture [23,24]. The burning rate of pure CH4 and the mixed gas of 70% CH4 and 30% CO2 were measured respectively in the experiment, and the test results are shown in Figure 3.…”

Section: Biogas Combustion Velocity Testmentioning

confidence: 99%

Experimental Study of Gas Flow and Combustion in Biogas Generators

Yang¹,

Dong²,

Yang³

et al. 2016

IJHT

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Biogas is an environmentally friendly and clean, pollution-free fuel. In this paper, biogas generators have been researched in order to study the use of pig farm biogas in China. First, the pig farm biogas components are grouped, tested, and formulated. Since the biogas combustion process is not the same as for gasoline, biogas processing is carried out in a constant volume bomb combustion test, thus, the different components of biogas combustion speed, combustion pressure, and other information become available. The biogas combustion process in the combustion chamber and movement are simulated, and the cylinder pressure, speed, and temperature conditions are obtained. As can be seen from the experimental results, the biogas combustion speed is lower than that of gasoline, the ignition timing generator needs to be adjusted. In order to reduce the possibility of post-combustion occurring in the combustion chamber, certain combustion chamber swirl movements should be organized. The results show that by adjusting the ignition timing, air movement, and other factors, biogas can be used as fuel in generators.

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