Use of Vibration Signal for Diagnosis and Control of a Four-Cylinder Diesel Engine

Taglialatela-Scafati, Ferdinando; Lavorgna, Mario; Mancaruso, Ezio

doi:10.4271/2011-24-0169

Cited by 14 publications

(5 citation statements)

References 15 publications

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“…The high amplitude frequencies below 200 Hz are probably due to spurious sources and cannot be related to any combustion phenomena [9]. It is proven that high values of coherence are exhibited between the vibration signals in vertical direction with the in-cylinder pressure in the frequency band of 500 Hz-1100 Hz [17].…”

Section: Engine Vibration In Vertical Directionmentioning

confidence: 92%

“…In the lateral direction, the highest peak acceleration amplitudes are located at the frequency of 25 Hz for both diesel and NME and they are 9.4 m/s 2 and 9.42 m/s 2 at maximum load as shown in Figure 10(a). These high amplitudes are probably due to spurious sources and cannot be associated to any combustion phenomena as the energy of combustion is prevailing in the high frequency band of 1500-3000 Hz [9]. After 100 Hz, the highest peak is observed between 2500 Hz to 2700 Hz for both diesel and NME and it is higher for diesel due to its lower cetane number compared to NME.…”

Section: Engine Vibration In Vertical Directionmentioning

confidence: 98%

“…The change in vibration is 64.94 %, 86.41%, and 17% along vertical, lateral, and longitudinal directions when fuel is changed from NME to diesel. It may be due to the presence of combustion induced vibration at high frequency zones [9]. (a) (b) Figure 16.…”

Section: Engine Vibration In Longitudinal Directionmentioning

confidence: 99%

“…The vibration signals from the cylinder head are normally non-stationary signals and they are generally analysed with time domain and frequency domain analysis [7]. The combustion process inside the engine cylinder can be studied by means of a direct measurement with a combustion pressure transducer which is expensive, unreliable, and difficult for installation in the hostile engine environment [8][9][10][11] Hence, non-intrusive measuring techniques are put into practice to study the combustion process inside the engine cylinder as they retain the advantage of being less expensive; durable and reliable; and easy to use [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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An experimental investigation of vibration characteristics of compression ignition engine running with neem methyl ester

Varma¹,

Kumar²,

Prasanthi³

2022

Int. J. Automot. Mech. Eng.

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Reduction of fossil fuel reserves, environmental deterioration, global warming, and rigorous emission norms have necessitated the need for alternate fuel such as biodiesels. Diesel engines produce a higher vibration which leads to a reduced engine life span. In the present study, the vibration of a compression ignition engine has been measured for both diesel and Neem methyl ester. The experiments were carried out at 0%, 25%, 50%, 75%, and 100% load when the engine runs at a constant speed of 1500 rpm and with a compression ratio of 16. Triaxial accelerometer is used for measuring engine vibration along vertical, lateral, and longitudinal directions. Data acquisition and analysis are obtained by NI LabVIEW. It has been observed that an engine running with NME produces lower combustion induced vibration acceleration compared to diesel fuel. It is also noticed that higher peak amplitudes are observed at the frequency of 25 Hz for both diesel and NME, within the range of 0-100 Hz and along three directions. Within the range of 100-3000 Hz, the highest peak amplitudes are observed for engine running with diesel compared to neem methyl ester. At a 100% load, the change in vibration amplitude is 64.94 %, 86.41%, and 17% along vertical, lateral, and longitudinal directions when fuel is changed from NME to diesel. Combustion characteristics such as maximum cylinder pressure, heat release rate, and rate of pressure rise are also measured for both diesel and NME in order to find the relationship between combustion and vibration. At full load conditions, the maximum combustion pressure and maximum rate of pressure rise are increased by 2.1% and 8.33% with pure diesel compared to neem methyl ester. The experimental work suggests that neem methyl ester can be directly used in diesel engines in view of a lesser engine vibration and higher engine life.

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Section: Engine Vibration In Vertical Directionmentioning

confidence: 92%

Section: Engine Vibration In Vertical Directionmentioning

confidence: 98%

Section: Engine Vibration In Longitudinal Directionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An experimental investigation of vibration characteristics of compression ignition engine running with neem methyl ester

Varma¹,

Kumar²,

Prasanthi³

2022

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

show abstract

“…The peaks (maximum amplitudes) of time domain signals indicate the peak pressures in the cylinder during the combustion process. High amplitude frequencies below 200 Hz are probably due to spurious sources and cannot be related to any combustion phenomena [30]. Higher coherence is observed between the cylinder pressure and vibration in the vertical direction in the frequency range 500-1100 Hz [31].…”

Section: Emission Characteristicsmentioning

confidence: 97%

Effect of oxygenated fuels on performance, combustion, emission and vibration characteristics of a compression ignition engine

2017

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Oxygenated fuels are set to replace fossil fuels, as they are biodegradable, renewable and have less impact on the environmental. Experiments have been carried out to find performance, combustion, emission and vibration characteristics of a single cylinder, four stroke, variable compression ratio, compression ignition engine. In this study, the fuels used are diesel, oxygenated fuels like neem methyl ester (NME), B1 (diesel 50%, neem methyl ester 45%, methanol 5%) and B2 (diesel 50%, neem methyl ester 40%, methanol 10%). Engine tests are conducted at the rated speed of 1500 rpm for different loading conditions at the fixed compression ratio of 17.5. At full load condition, brake thermal efficiency is higher by 24.74% for B2 over diesel. Maximum net heat release rate and maximum rate of pressure rise are higher for NME compared to blends B1 and B2. The smoke density of diesel-biodiesel-methanol blended fuel B1 is low compared to other fuels up to 50% load. At full load condition, vibration is reduced by 36.4, 50.7 and 40.4% for NME compared to diesel at first, second and third highest peak amplitude frequencies. Therefore, NME and diesel-biodiesel-methanol blended fuel B1 are recommended as alternate fuels for a compression ignition engine in view of reduced engine vibration and emissions.

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Combustion Based Noise

2017

Liquid Piston Engines

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Use of Vibration Signal for Diagnosis and Control of a Four-Cylinder Diesel Engine

Cited by 14 publications

References 15 publications

An experimental investigation of vibration characteristics of compression ignition engine running with neem methyl ester

An experimental investigation of vibration characteristics of compression ignition engine running with neem methyl ester

Effect of oxygenated fuels on performance, combustion, emission and vibration characteristics of a compression ignition engine

Combustion Based Noise

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