Effects of biodiesel on a low heat loss diesel engine

Hazar, Hanbey

doi:10.1016/j.renene.2008.11.008

Cited by 151 publications

(64 citation statements)

References 21 publications

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“…Some researchers found an improvement in the thermal efficiency, NOX emission reduction, increase in exhaust energy availability, reduction in heat loss [19,27,[29][30][31][32][33] on the other hand some researchers contradict the fact that there was no improvement in thermal efficiency [34,35]. Plasma spray method is the widely used thermal spraying method to coat TBC in the engine.…”

Section: Transesterification Processmentioning

confidence: 99%

Study of Performance and Emission Analysis of Dual Biodiesel Fuelled on LHR Diesel Engine Supported by EGR System

al.¹

2017

IJMPERD

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Section: Transesterification Processmentioning

confidence: 99%

Study of Performance and Emission Analysis of Dual Biodiesel Fuelled on LHR Diesel Engine Supported by EGR System

al.¹

2017

IJMPERD

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“…Therefore, a demand to develop alternative fuels which are cheaper and environmentally acceptable has been considered to reduce the dependency on fossil fuel due to the limited resources (Aydin and Bayindir, 2010). It pointed out that biodiesel is one of the most promising renewable, alternative and environmentally fuels, and can be used in diesel engines directly (Aydin and Bayindir, 2010) (Hazar, 2009). However, the diesel engines are not specifically designed for biodiesel supplied.…”

Section: Introductionmentioning

confidence: 99%

“…The researchers are not only focus on the study of engine performance assessment, but also investigate the combustion process and emission characteristics of diesel engines fuelled with biodiesel (Enweremadu and Rutto, 2010) (Aydin and Bayindir, 2010) (Hazar, 2009) (Murillo et al, 2007) (Dorado et al, 2003). Dorado et al (Dorado et al, 2003) studied the effect of used olive oil methyl ester on combustion efficiency using a DI diesel Perkins engine, and concluded that biodiesel provided more oxygen for combustion as a result of its oxygen concentration increased.…”

Section: Introductionmentioning

confidence: 99%

Combustion Noise Analysis for Combustion and Fuels Diagnosis of a Compression Ignition Diesel Engine Operating with Biodiesels

Zhen

Song

Shi

et al. 2015

Combustion Science and Technology

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In this paper, the combustion noise of a compression ignition (CI) diesel engine operating with biodiesels has been investigated experimentally. It aims to explore an effective method for combustion process monitoring and fuel quality evaluation through analysing the characteristics of the engine combustion noise. The experiments were conducted on a four-cylinder, four-stroke, direct injection and turbocharged diesel engine fuelled with biodiesels (B50 and B100) and normal pure diesel, and operating under different loads and speeds. The signals of cylinder head vibration, engine noise and in-cylinder pressure were measured during the tests. A coherent power spectrum analysis method was used to investigate the vibration and noise signals that related to the combustion process. The results shown that the noise components at the frequency band of 2 -3 kHz are closely related to the combustion process. Subsequently, the Wigner-Ville distribution is employed to present the energy distribution of engine noise in the time-frequency domain. Then a band-pass filter based on fractional Fourier transform (FRFT) is developed to extract the main component of the combustion noise for feature extraction. The results show that the sound pressure levels (SPLs) of the extracted combustion noise of the test diesel engine fuelled with biodiesels are higher than that fuelled with diesel. This is also identical to the variation of in-cylinder pressure. The results demonstrate that the features of the extracted combustion noise can indicate the combustion characteristics and provide useful information for monitoring the combustion process and evaluating the fuel quality of diesel engines.

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“…Consequently, efforts to develop alternative fuels which are cheaper and environmentally acceptable have been considered to reduce the dependency on fossil fuels [1]. Previous research [2][3][4], has shown that biodiesel is one of the most promising renewable, alternatives and environmentally fuels. Biodiesel is composed of fatty acid methyl or ethyl esters from vegetable oils or animal fats and its properties are similar to petroleum-based fuel [5].…”

Section: Introductionmentioning

confidence: 99%

Acoustic measurements for the combustion diagnosis of diesel engines fuelled with biodiesels

Zhen

Wang

et al. 2013

Meas. Sci. Technol.

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In this paper, an experimental investigation was carried out on the combustion process of a compression ignition (CI) engine running with biodiesel blends under steady state operating conditions. The effects of biodiesel on the combustion process and engine dynamics were analysed for non-intrusive combustion diagnosis based on a four-cylinder, four-stroke, direct injection and turbocharged diesel engine. The signals of vibration, acoustic and in-cylinder pressure were measured simultaneously to find their inter-connection for diagnostic feature extraction. It was found that the sound energy level increases with the increase of engine load and speed, and the sound characteristics are closely correlated to the variation of in-cylinder pressure and combustion process. The continuous wavelet transform (CWT) was employed to analyse the non-stationary nature of engine noise in a higher frequency range. Before the wavelet analysis, time synchronous average (TSA) was used to enhance the signal-to-noise ratio (SNR) of acoustic signal by suppressing the components which are asynchronous. Based on the root mean square (RMS) values of CWT coefficients, the effects of biodiesel fractions and operating conditions (speed and load) on combustion process and engine dynamics were investigated. The result leads to the potential of airborne acoustic measurements and analysis for engine condition monitoring and fuel quality evaluation.

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Effects of biodiesel on a low heat loss diesel engine

Cited by 151 publications

References 21 publications

Study of Performance and Emission Analysis of Dual Biodiesel Fuelled on LHR Diesel Engine Supported by EGR System

Study of Performance and Emission Analysis of Dual Biodiesel Fuelled on LHR Diesel Engine Supported by EGR System

Combustion Noise Analysis for Combustion and Fuels Diagnosis of a Compression Ignition Diesel Engine Operating with Biodiesels

Acoustic measurements for the combustion diagnosis of diesel engines fuelled with biodiesels

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