Analysis of misfires in a direct injection engine using proper orthogonal decomposition

Chen, Hao; Reuss, David L.; Sick, Volker

doi:10.1007/s00348-011-1133-z

Cited by 70 publications

(24 citation statements)

References 16 publications

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“…Thus, once the method is applied, a complete connection between spatial, temporal and frequency domains can be revealed. Although some studies have specifically addressed ICE combustion issues through POD, they have been focused on cycle-to-cycle variation analysis [62,63], spark-ignition engine misfire [64] or the evolution of a particular species [65]. Only Torregrosa et al [66] have applied this method to acoustic issues of combustion chambers.…”

Section: Acoustic Analysismentioning

confidence: 99%

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

Broatch¹,

Novella²,

Gómez-Soriano³

et al. 2018

SAE Int. J. Engines

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Section: Acoustic Analysismentioning

confidence: 99%

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

Broatch¹,

Novella²,

Gómez-Soriano³

et al. 2018

SAE Int. J. Engines

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“…POD analysis can be carried out either on experimental or numerical simulation data sets. POD analytical technique has been extensively adopted by many researchers to study engine cycle-to-cycle variations Chen et al (2011), Liu et al (2013), Chen et al (2013), Tumble motion evolution at different valve lifts under steady-state conditions Mohammed El-Adawy et al (2017a), spray and combustion process Graftieaux et al (2001), Bizon et al (2009), Sick et al (2012.…”

Section: Introductionmentioning

confidence: 99%

Effect of Boost Pressure on the In-Cylinder Tumble-Motion of GDI Engine under Steady-State Conditions using Stereoscopic-PIV

El-Adawy

Heikal

Aziz

et al. 2018

JAFM

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This paper experimentally investigates the effect of boost pressure on the in-cylinder flow field under steadystate conditions using stereoscopic particle image velocimetry (Stereo-PIV) through increasing the pressure difference across the intake valves. The FEV steady-state flow bench was modified to provide an optical access into the cylinder region. The stereoscopic PIV measurements were carried out at various pressure differences viz., 300, 450, and 600 mmH2O across the intake valves of Gasoline Direct Injection (GDI) head for the mid cylinder vertical tumble-plane. Ensemble average velocity vectors were used to characterize the tumble flow structure and for the calculation of tumble ratio and average turbulent kinetic energy. Moreover, the Proper Orthogonal Decomposition (POD) technique was conducted on the PIV measured velocity vector maps to identify the most energetic structures generated at different valve lifts and pressure differences. The results of stereoscopic PIV measurements showed that the overall in-cylinder flow structures were mainly dependent on the valve lift irrespective of the applied pressure difference. However, the level of the turbulence kinetic energy increased as the boost pressure increased.

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“…Phase-dependent POD analysis was utilized to quantify the CCV of these two flow states in the direction of this flow structure in each cycle at 100 ATDCE. Using phase-dependent POD, the velocity fields from the combined four data sets were analyzed to obtain a common set of basis functions or modes 46,47 . These modes are ordered by energy fraction, which is the average mass-specific kinetic energy percentage contributed by a mode to the velocity fields analyzed.…”

Section: (A) (B)mentioning

confidence: 99%

Flow-pattern switching in a motored spark ignition engine

Abraham

Yang

Gupta

et al. 2015

International Journal of Engine Research

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Cycle-to-cycle variability of intake-jet flow in an optical engine was measured using particle image velocimetry, revealing the possibility of two different flow patterns. A phase-dependent proper orthogonal decomposition analysis showed that one or the other flow pattern would appear in the average flow, sampled from test to test or sub-sampled within a single test; each data set contained individual cycles showing one flow pattern or the other. Three-dimensional velocity data from a large-eddy simulation of the engine showed that the particle image velocimetry plane cuts through a region of high shear between the intake jet and another large flow structure. Rotating the measurement plane 610°revealed one or the other flow structure observed in the particle image velocimetry measurements. Thus, it was hypothesized that cycle-to-cycle variations in the swirl ratio result in the two different flow patterns in the particle image velocimetry plane. Having an unambiguous metric to reveal large-scale flow cycle-to-cycle variability, causes for this variability were examined within the possible sources present in the available testing. In particular, variations in intake-port and cylinder pressure, lateral valve oscillations, and engine RPM were examined as potential causes for the cycle-to-cycle flow variations using the phase-dependent proper orthogonal decomposition coefficients. No direct correlation was seen between the intake-port pressure, or the pressure drop across the intake valve, and the in-cylinder flow pattern. A correlation was observed between dominant flow pattern and cycle-to-cycle variations in intake-valve horizontal position. RPM values and in-cylinder flow patterns did not correlate directly. However, a shift in flow pattern was observed between early and late cycles in a 2900-cycle test after an approximately 5 r/min engine speed perturbation.

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Analysis of misfires in a direct injection engine using proper orthogonal decomposition

Cited by 70 publications

References 16 publications

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

Effect of Boost Pressure on the In-Cylinder Tumble-Motion of GDI Engine under Steady-State Conditions using Stereoscopic-PIV

Flow-pattern switching in a motored spark ignition engine

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