Analysis of cycle-to-cycle pressure oscillations in a diesel engine

Sen, Asok K.; Longwic, Rafał; Litak, Grzegorz; Górski, K.

doi:10.1016/j.ymssp.2007.07.015

Cited by 106 publications

(41 citation statements)

References 35 publications

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“…This phenomenon is inherent to this kind of engine [25] and has been widely studied. Many studies have been carried out in order to find out the main causes of this effect [30,31]. Cycle-to-cycle variations are considered to be caused by dispersions in the flame speed, combustion duration and turbulence [32].…”

Section: Introductionmentioning

confidence: 99%

Study of the cycle-to-cycle variations of an internal combustion engine fuelled with natural gas/hydrogen blends from the diagnosis of combustion pressure

Reyes¹,

Melgar²,

Pérez³

et al. 2013

International Journal of Hydrogen Energy

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Spark ignition engine Combustion diagnosisAlternative fuels Genetic algorithm a b s t r a c tA methodology is presented for studying the influence of using alternative fuels on the cycle-to-cycle variations of a spark ignition engine which has been fuelled with mixtures of natural gas and hydrogen in different proportions (0e100%). The experimental facility consists of a single-cylindrical spark ignition engine coupled to an asynchronous machine IntroductionBecause of the increasing concern about energy deficiency and environmental defence, much effort has been focused on the use of alternative fuels in internal combustion engines (ICE). Alternative fuels are clean, when compared to conventional ones derived from petroleum in ICE. Natural gas (NG) is considered to be a probable alternative fuel due to its properties and higher octane number. NG is a mixture of different gases where methane is its main constituent (75e98% of methane; 0.5e13% of ethane; and 0e2.6% of propane [1] Available online at www.sciencedirect.com journal h om epa ge: www.elsev ier.com/locate/he i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 3 8 ( 2 0 1 3 ) 1 5 4 7 7 e1 5 4 8 7

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Section: Introductionmentioning

confidence: 99%

Study of the cycle-to-cycle variations of an internal combustion engine fuelled with natural gas/hydrogen blends from the diagnosis of combustion pressure

Reyes¹,

Melgar²,

Pérez³

et al. 2013

International Journal of Hydrogen Energy

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“…The fresh fuel amount could be terminated at slightly different time. This paper is a continuation of our previous investigations devoted to the dynamics of stationary Diesel engine conditions [13,14], where the recurrence plots technique and QRA were successfully used in to distinguish various states of the engine work. Here, these techniques have been applied to identify various phases of the engine non-stationary work.…”

Section: Discussionmentioning

confidence: 90%

“…4) while ǫ is a small threshold value. This method has been also used to examine the dynamical states of engines [13][14][15][16].…”

Section: Phase Space Reconstructionmentioning

confidence: 99%

Analysis of repeatability of Diesel engine acceleration

Litak

Longwic

2009

Applied Thermal Engineering

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The analysis of combustion non-repeatability in the dynamical working conditions of a Diesel engine is presented. In the frame of statistical analysis, applied to a number of acceleration trails, basic determinants such as standard square deviation, skewness, and kurtosis have been calculated for the mean indicated pressure (MIP). The methods of return maps, delay phase portrait reconstruction, recurrence plots and quantification recurrence analysis have been also used to analyze a single chosen course of the measured pressure starting from the idle run of engine, through its acceleration process and ending on a stable engine run with a certain velocity. The results show that recurrence techniques are able to identify various phases of the engine non-stationary work.

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“…As a consequence, cylinder balancing using the assumption of an inflexible crankshaft can only be used for engines with few cylinders. Some methods have been suggested which take into account the dynamics of the crankshaft [7][8][9]. The usual approach is to increase the order of the lumped massspring model in order to capture the fundamental dynamics of the crankshaft.…”

Section: Introductionmentioning

confidence: 99%

Power Balancing of Inline Multicylinder Diesel Engine

Gawande

Navale

Nandgaonkar³

2012

Advances in Mechanical Engineering

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In this work, a simplified methodology is presented for power balancing by reducing the amplitude of engine speed variation, which result in excessive torsional vibrations of the crankshaft of inline six-cylinder diesel engine. In modern fuel injection systems for reciprocating engines, nonuniform cylinder-wise torque contribution is a common problem due to nonuniform fuel supply due to a defect in fuel injection system, causing increased torsional vibration levels of the crankshaft and stress of mechanical parts. In this paper, a mathematical model for the required fuel adjustment by using amplitude of engine speed variation applied on the flywheel based on engine dynamics is suggested. From the found empirical relations and FFT analysis, the amplitude of engine speed variation (i.e., torsional vibration levels) of the crankshaft of inline six-cylinder diesel engine genset can be reduced up to 55%. This proposed methodology is simulated by developing MATALB code for uniform and nonuniform working of direct injection diesel engine of SL90 type manufactured by Kirloskar

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Analysis of cycle-to-cycle pressure oscillations in a diesel engine

Cited by 106 publications

References 35 publications

Study of the cycle-to-cycle variations of an internal combustion engine fuelled with natural gas/hydrogen blends from the diagnosis of combustion pressure

Study of the cycle-to-cycle variations of an internal combustion engine fuelled with natural gas/hydrogen blends from the diagnosis of combustion pressure

Analysis of repeatability of Diesel engine acceleration

Power Balancing of Inline Multicylinder Diesel Engine

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