Availability analysis of n-heptane/iso-octane blends during low-temperature engine combustion using a single-zone combustion model

Han, Feng; Zhang, Chunhong; Wang, Meiying; Liu, Daojian; Yang, Xiaohu; Lee, Chia Fon

doi:10.1016/j.enconman.2014.04.061

Cited by 37 publications

(10 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Specific fuel consumption with RON95 is lower and in term of the fuel system, the PI system resulted in lower BSFC. 5. Combustion analysis showed a mixed response to different RON and fuel system.…”

Section: Resultsmentioning

confidence: 99%

“…Recent development of Homogeneous Charge Compression Ignition (HCCI) is gaining significant interest to improve thermal efficiency in IC engines due to low temperature combustion, but is challenged with difficulties to stabilize the operation due to uncontrolled combustion [5][6][7][8][9][10]. Direct injection gasoline engines offer better performance and fuel economy than Port injection gasoline engines at the optimal conditions [11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effects of research octane number and fuel systems on the performance and emissions of a spark ignition engine: A study on Saudi Arabian RON91 and RON95 with port injection and direct injection systems

Binjuwair

Mohamad

Almaleki

et al. 2015

Fuel

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effects of research octane number and fuel systems on the performance and emissions of a spark ignition engine: A study on Saudi Arabian RON91 and RON95 with port injection and direct injection systems

Binjuwair

Mohamad

Almaleki

et al. 2015

Fuel

View full text Add to dashboard Cite

“…Dessa forma esses modelos consideram que a composição e as propriedades termodinâmicas, como temperatura e pressão, são espacialmente uniforme, e variarão apenas pela influência do tempo [2]. Esses tipos de modelos geralmente utilizam uma relação empírica para determinar a taxa de consumo de combustível, ou funções analíticas, como, por exemplo, a curva de Wiebe [3].…”

Section: Modelos Multi-zoneunclassified

Análise Termodinâmica De Motores De Combustão Interna De Tipo Alternativo Usando Um Modelo Quasi-Dimensional

Tonon¹,

Garcia²

2017

Blucher Engineering Proceedings

View full text Add to dashboard Cite

RESUMOO uso de simulações para a predição do comportamento de determinados mecanismos está cada vez mais difundido na indústria automobilística, uma vez que ensaios experimentais possuem um custo muito mais elevado. Dentre todos os mecanismos que compõem um automóvel o motor merece um destaque especial, já que este é responsável pela geração de potência e é através dele que o veículo iniciará o seu movimento. Com o passar do tempo o projeto desse mecanismo precisou evoluir consideravelmente se comparado com os primeiros automóveis fabricados na história, devido as exigências de âmbito social e ecológico. Dessa forma, é de fundamental importância que as montadoras avaliem o comportamento do motor em toda a sua faixa de operação, e essa avaliação pode ser feita através de diferentes modelos numéricos. Atualmente os modelos mais difundidos para a simulação desses mecanismos são modelos Single-Zone, Multi-Zone e Multi-Dimensional. O presente trabalho faz uma análise comparativa entre dados experimentais e resultados obtidos através de simulações de motores de combustão interna, utilizando um modelo Multi-Zone de tipo Quasi-Dimensional. O modelo apresentado nesse trabalho ainda está em fase de desenvolvimento, porém já demonstra um grande potencial nas análises de desempenho. NOMENCLATURA T: temperatura

show abstract

“…Feng et al studied the fuel property and major species effects on HCCI availability parameters. 30 They concluded that by increasing isooctane fraction, irreversibility and reduction in heat transfer availability will increase.…”

Section: Introductionmentioning

confidence: 99%

Availability analysis on combustion of n-heptane and isooctane blends in a reactivity controlled compression ignition engine

Mohebbi

Reyhanian

Ghofrani

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

Unfortunately, energy demands and destruction of the environment from uncontrolled manipulation of fossil fuels have increased. Climate change concerns have resulted in the rapid use of new, alternative combustion technologies. In this study, reactivity controlled compression ignition (RCCI) combustion, which can simply be exploited in internal combustion (IC) engines, is investigated. To introduce and identify extra insightful information, an exergy-based study was conducted to classify various irreversibility and loss sources. Multidimensional models were combined with the primary kinetics mechanism to investigate RCCI combustion, incorporating the second law of thermodynamics. The n-heptane, a highly reactive fuel, was supplied by direct injection into the cylinder, whereas premixed fuel was supplied through the intake port in an isooctane/n-heptane RCCI engine. For five n-heptane increments (5%, 7.5%, 15%, 25%, and 40%) and six different exhaust gas recirculation (EGR) rates (0%, 10%, 20%, 30%, 40%, and 50%), accumulation of different exergy terms was calculated. The results show that as EGR introduction increases from 0% to 50%, the exergy destruction increases from 21.1% to 28.9%. Furthermore, the value of exhaust thermomechanical exergy decreases from 18.4% to 14.4% of the mixture fuel chemical exergy. Among the five different high reactive fuel mass regimes, the 40% n-heptane mass fraction has the major heat transfer exergy owing to its advanced CA50 that exerts a unique influence on cylinder charge temperature of heat transfer layer. The utilization efficiency of exhaust in RCCI is less affected by the variation of reactive fuel mass fraction by contrast; it will significantly influence heat transfer availability. This study revealed that with increasing reactive fuel (n-heptane) from 7.5% to 40% the irreversibility decreased from 28.6% to 25.8% and the second law efficiency first increased from 43.2% to 44.6% at 15% n-heptane then decreased to 42.9% at 40% n-heptane.

show abstract

Availability analysis of n-heptane/iso-octane blends during low-temperature engine combustion using a single-zone combustion model

Cited by 37 publications

References 29 publications

The effects of research octane number and fuel systems on the performance and emissions of a spark ignition engine: A study on Saudi Arabian RON91 and RON95 with port injection and direct injection systems

The effects of research octane number and fuel systems on the performance and emissions of a spark ignition engine: A study on Saudi Arabian RON91 and RON95 with port injection and direct injection systems

Análise Termodinâmica De Motores De Combustão Interna De Tipo Alternativo Usando Um Modelo Quasi-Dimensional

Availability analysis on combustion of n-heptane and isooctane blends in a reactivity controlled compression ignition engine

Contact Info

Product

Resources

About