The effect of piston scratching fault on the vibration behavior of an IC engine

Moosavian, Ashkan; Najafi, G.; Ghobadian, Barat; Mirsalim, Mojtaba

doi:10.1016/j.apacoust.2017.05.017

Cited by 47 publications

(30 citation statements)

References 21 publications

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“…Transformation of the time series data into the time-frequency domain will give simultaneous information about how the frequency and amplitude vary within certain time duration. The wavelet method has been widely applied in the internal combustion engine research [35,37,39,41,45,46]. The continuous wavelet transformation (CWT) used in this study is based on the findings by Torrence and Compo [47], but with some modifications according to the needs of this study.…”

Section: Cyclic Variation Equationsmentioning

confidence: 99%

Cyclic Variation Analysis of Palm Biodiesel Fuel in Low Compression Marine Diesel Engine

Noor¹,

Mamat²,

Ali³

et al. 2020

ARFMTS

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Environmental pollution due to fossil fuel combustion has made biodiesel a viable option. Biodiesel fuel has been widely used in land-based vehicle engines, but it is limited to marine sectors. This study investigated the cyclic variations effect of palm biodiesel to determine combustion stability in low compression marine diesel engine. The time series of peak pressure and indicated mean effective pressure is examined using statistical and continuous wavelet transformation methods. The results show that the cyclic variations on marine engine operated with palm biodiesel are better than diesel, as indicated by lower COVpmax and COVIMEP values, which are below 1.29% and 2.50% respectively. Increase the percentage of palm biodiesel in blends has gradually reduced the COVIMEP and the B30 palm biodiesel blend produces the minimum cyclic variations of IMEP with 1.91%. This finding was agreed with the wavelet spectrum results which revealed that the B30 palm biodiesel blend has the lowest IMEP frequency oscillation. The B30 palm biodiesel blend has produced the most stable combustion among the tested fuels.

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Section: Cyclic Variation Equationsmentioning

confidence: 99%

Cyclic Variation Analysis of Palm Biodiesel Fuel in Low Compression Marine Diesel Engine

Noor¹,

Mamat²,

Ali³

et al. 2020

ARFMTS

View full text Add to dashboard Cite

show abstract

“…The engine vibration signals were measured in vertical (z), lateral (y), and longitudinal (x) directions, using three accelometers. Short-time Fourier transform (STFT) and Morlet scalogram (MSC) distribution algorithms were exploited for knocking and fault detection [61][62][63][64][65][66][67]. By using these signal transform techniques, a vibration signal was calculated for different fuel blends, at one combustion cycle, under idle-and full-load conditions.…”

Section: Biodiesel Fuelsmentioning

confidence: 99%

“…The RMS and spectral kurtosis (SK) are two well-adopted statistical tools in fault diagnosis of rotating machines [63,[86][87][88][89][90][91], to assess energy, peakedness (sharpness), and impulsiveness of the vibration signals. While the RMS strongly depends on the acceleration amplitudes and engine speed of a system, the kurtosis is tremendously noise-sensitive and can be markedly affected by the fuel blend type and signal processing techniques (e.g., band pass filter, envelope detection).…”

Section: Biodiesel Fuelsmentioning

confidence: 99%

Performance Enhancement of Internal Combustion Engines through Vibration Control: State of the Art and Challenges

et al. 2019

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Internal combustion engines (ICEs) are the primary source of power generation in today’s driving vehicles. They convert the chemical energy of the fuel into the mechanical energy which is used to drive the vehicle. In this process of energy conversion, several parameters cause the engine to vibrate, which significantly deteriorate the efficiency and service life of the engine. The present study aims to gather all the recent works conducted to reduce and isolate engine vibration, before transmitting to other vehicle parts such as drive shafts and chassis. For this purpose, a background history of the ICEs, as well as the parameters associated with their vibration, will be introduced. The body of the paper is divided into three main parts: First, a brief summary of the vibration theory in fault detection of ICEs is provided. Then, vibration reduction using various mechanisms and engine modifications is reviewed. Next, the effect of using different biofuels and fuel additives, such as alcohols and hydrogen, is discussed. Finally, the paper ends with a conclusion, summarizing the most recent methods and approaches that studied the vibration and noise in the ICEs.

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“…Wang, et al [4,5] evaluated the tribological behaviors of composite polymer coatings and ceramic composite coatings for aluminum pistons, and ranked different materials in terms of wear and scuffing resistance. In recent years, graphite coatings [6][7][8] and diamond-like carbon coatings [9,10] have become increasingly popular. In addition, new surface treatment technologies have been developed.…”

Section: Introductionmentioning

confidence: 99%

Study of Break-In Process and its Effects on Piston Skirt Lubrication in Internal Combustion Engines

2019

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The piston skirt is one of the main contributors to the total mechanical loss in internal combustion engines. Usually, the skirt friction experiences a rapid change during the break-in period largely due to the wear of the machine marks or roughness against soft coatings. It is thus important to consider the effect of the change of the roughness for a realistic prediction of the piston skirt friction and system optimization. In this work, an existing model of piston skirt lubrication was improved with the consideration of a breaking in process for the most commonly used triangle machine marks. A new set of flow factors in the averaged Reynolds equation were analytically derived for the trapezoid shape formed after wear of the original triangle shape. A new asperity contact model was developed for the trapezoid shape. The calculation results reflect the trend of friction mean effective pressure (FMEP) during break-in in an engine test and showed quantitative agreement under the same amount of wear.

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The effect of piston scratching fault on the vibration behavior of an IC engine

Cited by 47 publications

References 21 publications

Cyclic Variation Analysis of Palm Biodiesel Fuel in Low Compression Marine Diesel Engine

Cyclic Variation Analysis of Palm Biodiesel Fuel in Low Compression Marine Diesel Engine

Performance Enhancement of Internal Combustion Engines through Vibration Control: State of the Art and Challenges

Study of Break-In Process and its Effects on Piston Skirt Lubrication in Internal Combustion Engines

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