High-speed PIV and LIF imaging of temperature stratification in an internal combustion engine

Peterson, Brian; Baum, Elias; Böhm, Benjamin; Sick, Volker; Dreizler, Andreas

doi:10.1016/j.proci.2012.05.051

Cited by 68 publications

(41 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There are many attempts made to overcome the problem of early ignition timing, which are making heterogeneous mixture or thermal stratification [2][3][4][5], adding cooled exhaust gas recirculation (EGR) [6], and mixing two different characteristics of fuels as high cetane and high octane number fuels [7], or vice versa. Among them, fuel selections for large reactivity difference fuels have been one of the important aspects of HCCI engine development.…”

Section: Introductionmentioning

confidence: 99%

“…However, several items have to solve before its widespread production. Controlling the rate of energy release and pressure-rise at high loads have been main problems [1].There are many attempts made to overcome the problem of early ignition timing, which are making heterogeneous mixture or thermal stratification [2][3][4][5], adding cooled exhaust gas recirculation (EGR) [6], and mixing two different …”

mentioning

confidence: 99%

See 1 more Smart Citation

A Study on the Autoignition Characteristics of DME–LPG Dual Fuel in the HCCI Engine

Jamsran

2016

Heat Transfer Engineering

View full text Add to dashboard Cite

This study was investigated to examine the potential increase of engine power through the mixture of di-methyl ether (DME) and liquefied petroleum gas (LPG) on homogeneous charge compression ignition (HCCI) combustion. The effects of mixing ratio of DME/LPG in constant intake temperature were confirmed experimentally in a single cylinder diesel engine. A numerical analysis were conducted through the mixing model of DME and n-Butane for the detailed chemical kinetics using CHEMKIN-PRO to clarify the autoignition mechanism of constant combustion phasing. The results show that the increased amount of LPG reduces the low temperature heat release (LTHR) and activates the high temperature heat release (HTHR) which increases the in-cylinder pressure. Therefore, it has potential to raise the indicated mean effective pressure (IMEP) by appropriately changing the mixing ratio. Also, thermal efficiency was increased to 51.2% at the mixing ratio of 0.6. Finally, engine out emissions including total hydrocarbon (THC) and carbon monoxide (CO) were decreased by the change of mixing ratio. Numerical results agreed with experiment that the weakened low temperature oxidation by the increase of n-Butane amount. INTRODUCTIONThe HCCI engine is named as the candidate of next generation internal combustion engine with the high efficiency of the compression ignition (CI) engine and the very low emissions of the spark ignition (SI) engine. The known benefits of a HCCI engine are near-zero nitrogen oxides (NOx) and PM emissions. However, several items have to solve before its widespread production. Controlling the rate of energy release and pressure-rise at high loads have been main problems [1].There are many attempts made to overcome the problem of early ignition timing, which are making heterogeneous mixture or thermal stratification [2][3][4][5], adding cooled exhaust gas recirculation (EGR) [6], and mixing two different

show abstract

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

A Study on the Autoignition Characteristics of DME–LPG Dual Fuel in the HCCI Engine

Jamsran

2016

Heat Transfer Engineering

View full text Add to dashboard Cite

show abstract

“…However, for temperature, a variable of critical interest in flows involving heat transfer or chemical reactions, to date there are only two demonstrations of planar measurements at sustained kHz repetition rates [7,8]. Both are based on laser-induced fluorescence (LIF) of toluene seeded into the flow and a two-color detection scheme which uses the red shift of the fluorescence spectrum with increasing temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Both are based on laser-induced fluorescence (LIF) of toluene seeded into the flow and a two-color detection scheme which uses the red shift of the fluorescence spectrum with increasing temperature. This technique was first applied in a heated nitrogen jet [7] and later, in combination with PIV, to investigate the evolution of temperature stratification in a motored internal combustion engine fed with nitrogen [8]. However, strong oxygen quenching prohibited measurements in air and the toluene emission around 300 nm required the use of high-speed intensifiers, which are associated with non-linearities and charge depletion effects [4,9].…”

Section: Introductionmentioning

confidence: 99%

High-speed planar thermometry and velocimetry using thermographic phosphor particles

et al. 2013

View full text Add to dashboard Cite

Simultaneous gas-phase temperature and velocity imaging using micrometer-size thermographic phosphor particles seeded into the flow is demonstrated at a 3 kHz repetition rate. The velocity field is measured using a standard particle image velocimetry approach, while the temperature is determined from the temperature sensitive phosphorescence emission of the particles following excitation at 355 nm. Since the particles are very small, they rapidly assume the temperature and velocity of the surrounding gas. A single shot temperature precision of better than 5 % was achieved at 500 K. Time-resolved measurements in the wake of a heated cylinder are presented, demonstrating the utility of these imaging diagnostics to observe transient, coupled heat and mass transfer phenomena.

show abstract

“…Several techniques for multi-dimensional, simultaneous velocity and temperature measurements have previously been demonstrated [2][3][4]. Each of these studies combined a velocity measurement technique, such as particle image velocimetry (PIV), with a thermometry technique, such as laser-induced fluorescence (LIF), filtered Rayleigh scattering (FRS), or thermographic phosphors (TP).…”

Section: Introductionmentioning

confidence: 99%

A compact single-camera system for high-speed, simultaneous 3-D velocity and temperature measurements.

Lu¹,

Sick²,

Frank³

2013

Self Cite

View full text Add to dashboard Cite

The University of Michigan and Sandia National Laboratories collaborated on the initial development of a compact single-camera approach for simultaneously measuring 3-D gasphase velocity and temperature fields at high frame rates. A compact diagnostic tool is desired to enable investigations of flows with limited optical access, such as near-wall flows in an internal combustion engine. These in-cylinder flows play a crucial role in improving engine performance. Thermographic phosphors were proposed as flow and temperature tracers to extend the capabilities of a novel, compact 3D velocimetry diagnostic to include high-speed thermometry. Ratiometric measurements were performed using two spectral bands of laser-induced phosphorescence emission from BaMg 2 Al 10 O 17 :Eu (BAM) phosphors in a heated air flow to determine the optimal optical configuration for accurate temperature measurements. The originally planned multi-year research project ended prematurely after the first year due to the Sandia-sponsored student leaving the research group at the University of Michigan. 4 ACKNOWLEDGMENTSThis project was in part funded by the College of Engineering, University of Michigan.5

show abstract

High-speed PIV and LIF imaging of temperature stratification in an internal combustion engine

Cited by 68 publications

References 14 publications

A Study on the Autoignition Characteristics of DME–LPG Dual Fuel in the HCCI Engine

A Study on the Autoignition Characteristics of DME–LPG Dual Fuel in the HCCI Engine

High-speed planar thermometry and velocimetry using thermographic phosphor particles

A compact single-camera system for high-speed, simultaneous 3-D velocity and temperature measurements.

Contact Info

Product

Resources

About