Experimental and regression analysis of noise and vibration of a compression ignition engine fuelled with various biodiesels

Uludamar, Erinç; Tosun, Erdi; Aydın, Kadir

doi:10.1016/j.fuel.2016.03.028

Cited by 85 publications

(44 citation statements)

References 24 publications

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“…It has been shown by many studies [1][2][3][4] and small-scale applications [5,6] that the use of biodiesel can be feasible as burning such fuels in a diesel engine can produce the desired power and an emission level similar to that of fossil diesel. It has also been observed that there are many significant differences in using biodiesel in terms of combustion behaviors, burning residuals, vibration and noise emissions, which might be attributed to their significant difference in physical and chemical properties [7,8]. However, the majority of studies on biodiesel have mainly focused on its power performance, efficiency and emission performance, without fully investigating the potential effects on the vibro-acoustic emissions of engines caused by its significant differences in physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

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Investigation into the Vibrational Responses of Cylinder Liners in an IC Engine Fueled with Biodiesel

Wang

et al. 2017

Applied Sciences

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Abstract:The paper presents a study of the relationship between the combustion behavior and vibration response of internal combustion (IC) engines fueled with biodiesel based on finite element modelling along with experimental evaluation. An improved finite element (FE) model is established and validated to predict the dynamic responses of cylinder liners with respect to two main sources: combustion shock and piston side thrust. Based on the validated FE model, the response characteristics of the cylinder liner in an IC engine fueled with biodiesel and its causal relationship with excitation sources have been predicted. Due to the lower calorific value of biodiesel, a greater amount of fuel is injected into the combustion chamber to maintain power outputs, which results in a prolonged combustion duration and subsequent higher overall vibration levels, compared with that of diesel. The advanced ignition of biodiesel is the main cause to the compound effect on the coupling of piston side-thrust force, thereby resulting in a nonlinear increase in the root mean square (RMS) of local vibration response close to the combustion top dead center (TDC). These key findings provides insight understandings for not only biodiesel combustion diagnostics but also more accurate diagnostics of fossil diesel based on nonintrusive vibrations.

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Section: Introductionmentioning

confidence: 99%

“…It has been found that there are many differences in the chemical components and combustion characteristics of biodiesels from various feed stocks [8]. To bring the service performance of biodiesel and its relationship with the combustion properties of biodiesel have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Investigation into the Vibrational Responses of Cylinder Liners in an IC Engine Fueled with Biodiesel

Wang

et al. 2017

Applied Sciences

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“…Basit matematiksel fonksiyonlar ile başarılı bir şekilde çıktı parametrelerini modelleyebilen doğrusal regresyon analizinin endüstride oldukça geniş bir kullanım alanı vardır. Örneğin, müşteri taleplerini [2], baca gazı CO2 emisyonunu [3], iyonik sıvıların termodinamik özeliklerini [4], çeşitli biyodizellerin kullanıldığı sıkıştırmalı ateşlemeli motorun gürültü ve ses özeliklerini [5], Alzheimer hastalığının ilerleme sürecini [6], binalarda elektrik tüketimini [7], nano-silika içeren yüksek dayanımlı betonun basınç dayanımını [8]tahmin etmede oldukça başarılıdır. Literatürdeki çalışmalar dikkate alındığında, doğrusal regresyonun, yeterince yüksek ilişkililik katsayına sahip olması bakımından, birçok sistem veya ürün özeliklerini tahmin etmede yeterli olduğu sonucuna varılabilir [9].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Polimerik Atıklar İçeren Betonun Ultrason Hızının ve Dinamik Elastisite Modülünün Çok Yanıtlı Eniyilenmesi

Şimşek¹,

Uygunoğlu²

2017

Journal of Polytechnic

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Polimerik atıklar içeren betonun ultrason hızının ve dinamik elastisite modülünün çok yanıtlı eniyilenmesi Politeknik Dergisi, 2017; 20 (4) : 1009-1017 Journal of Polytechnic, 2017; 20 (4) ÖZ Bu çalışmada polimerik atıklar içeren betonun ultrason hızı ve elastisite modülü özelikleri üzerindeki etken etkileri çok değişkenli regresyon çözümlemesi ile çözümlendi. Her biri üç seviyeye sahip yedi polimer; yüksek yoğunluklu polietilen, düşük yoğunluklu polietilen, polipropilen, termoplastik elastomer, dimetil teraftalat, polietilen teraftalat, polietilen naftalat ve deneylerin tasarımında (L27) ortogonal dizini seçildi. Ultrason hızı üzerinde azaltıcı etkiye sahip polimerler sırası ile 0.000, 0.009, 0.007, 0.008 ve 0.001 p-değerleri ile yüksek yoğunluklu polietilen, düşük yoğunluklu polietilen, termoplastik elastomer, polietilen teraftalat ve polietilen naftalat olarak belirlendi. Dinamik elastisite modülü üzerinde azaltıcı etkiye sahip polimerler ise, sırasıyla,0,001, 0.002 ve 0.001 p-değerleri ile yüksek yoğunluklu polietilen, polipropilen ve polietilen naftalat olarak belirlendi. Polimerik atıklar içeren betonun optimal karışım oranları doğrusal regresyon modelleri tabanlı çok yanıtlı doğrusal programlama yöntemiyle belirlendi. Optimal karışım oranları ile gerçekleştirilen doğrulama deneyi, çok yanıtlı doğrusal programlama yönteminin beton bileşimi eniyileme problemlerini çözmede etkili biçimde kullanılabileceğini göstermektedir.Anahtar Kelimeler: Beton, regresyon analizi, çok yanıtlı doğrusal programlama, taguchi tasarımı, polimerik atıklar. Multi-Response Optimization of Ultrasonic Pulse Velocity and the Modulus of Elasticity of ConcreteContaining Polymeric Wastes ABSTRACT In this study, the effect of the factors on ultrasonic velocity and elasticity modulus properties of concrete containing polymeric wastes was solved by multivariable regression analysis. Seven polymers, namely, low density polyethylene, high density polyethylene, polypropylene, thermoplastic elastomer, dimethyl terephthalate, polyethylene terephthalate, polyethylene naphthalate, each at three levels were selected, and an orthogonal array (L27) was used to carry out the experimental runs. Polymers with reducing effect on ultrasound pulse velocity were identified as high density polyethylene, low density polyethylene, thermoplastic elastomer, and polyethylene terephthalate and polyethylene naphthalate with p-values of 0.000, 0.009, 0.007, 0.008 and 0.001, respectively. Polymers having a reducing effect on the dynamic elasticity modulus were identified as high density polyethylene, polypropylene and polyethylene naphthalate with p-values of 0.001, 0.002 and 0.001, respectively. Optimal mixing ratios of concrete containing polymeric waste were determined by multi-response linear programming method based on linear regression models. Verification experiment with optimum mixture ratios shows that the multi-response linear programming method can be used effectively in solving the concrete compound optimization problems.

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“…Vibroacoustic signals were also used in [19,20], where excessive clearance between the piston and the cylinder sleeve of the engine was detected. Another interesting study was described in [21][22][23][24][25][26], where vibroacoustic signals were used for analyzing the influence of the type of fuel supplied to the engine on its work characteristics. Another issue analysed during this research was the impact of various types of mixtures, such as gasoline, LPG (Liquefied Petroleum Gas) and mixtures with the addition of hydrogen, on the generated vibroacoustic signals.…”

Section: Introductionmentioning

confidence: 99%

“…Another issue analysed during this research was the impact of various types of mixtures, such as gasoline, LPG (Liquefied Petroleum Gas) and mixtures with the addition of hydrogen, on the generated vibroacoustic signals. Works on the impact of fuel type on the change of vibroacoustic signals were also carried out in [23,24], which, among others, analysed the effects of the change of the fuel type in a (bi-fuel) engine on the temporary change of vibroacoustic signals.…”

Section: Introductionmentioning

confidence: 99%

The Use of Denoising and Analysis of the Acoustic Signal Entropy in Diagnosing Engine Valve Clearance

Figlus¹,

Gnap²,

Skrúcaný³

et al. 2016

Entropy

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Abstract:The paper presents a method for processing acoustic signals which allows the extraction, from a very noisy signal, of components which contain diagnostically useful information on the increased valve clearance of a combustion engine. This method used two-stage denoising of the acoustic signal performed by means of a discrete wavelet transform. Afterwards, based on the signal cleaned-up in this manner, its entropy was calculated as a quantitative measure of qualitative changes caused by the excessive clearance. The testing and processing of the actual acoustic signal of a combustion engine enabled clear extraction of components which contain information on the valve clearance being diagnosed.

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Experimental and regression analysis of noise and vibration of a compression ignition engine fuelled with various biodiesels

Cited by 85 publications

References 24 publications

Investigation into the Vibrational Responses of Cylinder Liners in an IC Engine Fueled with Biodiesel

Investigation into the Vibrational Responses of Cylinder Liners in an IC Engine Fueled with Biodiesel

Polimerik Atıklar İçeren Betonun Ultrason Hızının ve Dinamik Elastisite Modülünün Çok Yanıtlı Eniyilenmesi

The Use of Denoising and Analysis of the Acoustic Signal Entropy in Diagnosing Engine Valve Clearance

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