Energy and exergy analyses of a spark-ignition engine

Ameri, Mohammad; Kiaahmadi, F.; Khanaki, Mansour; Nazoktabar, Mohsen

doi:10.1504/ijex.2010.034928

Cited by 19 publications

(6 citation statements)

References 14 publications

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“…Reddy et al [20] performed an exergy analysis on internal combustion engines using either diesel or biogas-diesel mixture as fuel. Similar works on internal combustion engines have also been carried out by other researchers [21][22][23][24].…”

Section: Introductionmentioning

confidence: 64%

Exergy Analysis of the Revolving Vane Compressed Air Engine

Subiantoro

Wong

Ooi

2016

International Journal of Rotating Machinery

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Exergy analysis was applied to a revolving vane compressed air engine. The engine had a swept volume of 30 cm3. At the benchmark conditions, the suction pressure was 8 bar, the discharge pressure was 1 bar, and the operating speed was 3,000 rev·min−1. It was found that the engine had a second-law efficiency of 29.6% at the benchmark conditions. The contributors of exergy loss were friction (49%), throttling (38%), heat transfer (12%), and fluid mixing (1%). A parametric study was also conducted. The parameters to be examined were suction reservoir pressure (4 to 12 bar), operating speed (2,400 to 3,600 rev·min−1), and rotational cylinder inertia (0.94 to 2.81 g·mm2). The study found that a higher suction reservoir pressure initially increased the second-law efficiency but then plateaued at about 30%. With a higher operating speed and a higher cylinder inertia, second-law efficiency decreased. As compared to suction pressure and operating speed, cylinder inertia is the most practical and significant to be modified.

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Section: Introductionmentioning

confidence: 64%

Exergy Analysis of the Revolving Vane Compressed Air Engine

Subiantoro

Wong

Ooi

2016

International Journal of Rotating Machinery

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“…In recent years, it has been widely used for simulation, analysis and performance evaluation of various types of thermal systems [33]. In this regard, even though many studies on energy and exergy analysis have been published for several types of thermal systems [33][34][35][36][37][38][39][40][41], the number of studies related to internal combustion engines is somewhat insufficient.…”

Section: Introductionmentioning

confidence: 99%

Assessment of a direct injection diesel engine fumigated with ethanol/water mixtures

Morsy

2015

Energy Conversion and Management

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“…The components of exhaust gases can be found by using Equation 17 and 18 and the exergy rate of exhaust gases can be calculated by using Equation 14. The results obtained for exhaust exergy rate are illustrated in Figure 7.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it can be said that the irreversibilities occurred during compression, expansion and combustion processes on engine cycle are considerable affected with design and operation conditions of engine [13]. In the engine cycle processes, energy and exergy values of heat rejection increase with increasing engine speed [14]. In a single cylinder, water cooled SI engine fueled with LPG, the fuel consumption increases with decrease in the bore-to-stroke ratio increases, while the exergy destruction is minimized [15].…”

Section: Introductionmentioning

confidence: 99%

Exergy analysis of a spark ignition engine for different crankshaft speeds

Uysal¹

2019

Pamukkale J Eng Sci

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Öz In this study, a spark ignition (SI) engine performance is exergetically investigated for different crankshaft speeds. The test engine is VSG413 SI type engine fueled with 95 octane gasoline. The test engine has 1.3 l volume, four stroke, four cylinder, 45 kW maximum power capacity and 98 Nm maximum torque capacity. The experiments are realized under fully loaded test conditions. The crankshaft speed is changed between 1200 rpm and 5000 rpm. In the calculations, actual operating data obtained by experiments are used. It is found that maximum energy and exergy efficiencies are obtained at crankshaft speed of 2500 rpm, which are 29.78% and 27.77%, respectively. Entropy generation rate increases with increase in crankshaft speed and ranged from 0.059 kW/K to 0.253 kW/K for all study. Bu çalışmada, buji ateşlemeli bir motorun performansı farklı krank mili hızları için ekserjetik olarak incelenmektedir. Test motoru 95 oktan benzin yakıtlı VSG413 SI türü motordur. Test motoru 1.3 l hacim, dört strok, dört silindir, 45 kW'lık maksimum güç kapasitesi ve 98 Nm'lik maksimum tork kapasitesine sahiptir. Deneyler tam yük test koşulları altında gerçekleştirilmiştir. Krank mili hızı 1200 d/d ve 5000 d/d aralığında değiştirilmiştir. Hesaplamalarda, deneylerden elde edilen gerçek çalışma verileri kullanılmıştır. %29.78'lik maksimum enerji verimi ve %27.77'lik maksimum ekserji veriminin 2500 rpm'lik krank mili hızında elde edildiği tespit edilmiştir. Entropi üretimi krank mili hızının artmasıyla artmaktadır ve bütün çalışma boyunca 0.059 kW/K ile 0.253 kW/K aralığında değişmektedir.

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Energy and exergy analyses of a spark-ignition engine

Cited by 19 publications

References 14 publications

Exergy Analysis of the Revolving Vane Compressed Air Engine

Exergy Analysis of the Revolving Vane Compressed Air Engine

Assessment of a direct injection diesel engine fumigated with ethanol/water mixtures

Exergy analysis of a spark ignition engine for different crankshaft speeds

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