Quantitative imaging of equivalence ratios in a natural gas SI engine flow bench using acetone fluorescence

Ben, L.; Charnay, G.; Bazile, R.; Ferret, Bernard

doi:10.1007/s00348-007-0325-z

Cited by 10 publications

(6 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has a very low boiling point (329 K), a high saturation pressure 24 kPa (at 293 K), a good fluorescence yield and low toxicity. There are several well-documented reports to confirm that the acetone fluorescence intensity is linearly related with to the incident laser intensity and acetone concentration under constant temperature and pressure conditions (Lozano et al, 1992;Yuen et al, 1997;Guibert et al, 2002;Ben et al, 2007;Kirchweger et al, 2007). Acetone is liquid phase under room conditions and should be vaporized and homogeneously mixed with gas flow for PLIF imaging experiments.…”

Section: Experimental Set-upmentioning

confidence: 86%

An experimental investigation on the flow structure and mixture formation of low pressure ratio wall-impinging jets by a natural gas injector

Vuorinen

Hillamo

et al. 2012

Journal of Natural Gas Science and Engineering

View full text Add to dashboard Cite

Section: Experimental Set-upmentioning

confidence: 86%

An experimental investigation on the flow structure and mixture formation of low pressure ratio wall-impinging jets by a natural gas injector

Vuorinen

Hillamo

et al. 2012

Journal of Natural Gas Science and Engineering

View full text Add to dashboard Cite

“…The octane number of CNG is higher than gasoline approximately 120 until 130 [8,9]. Due to this property, theless knocking phenomenon will be occurred in the gasoline enginewith higher compression ratio [10,11].The advantage of CNGin term of combustion process inside the chamber is that CNG has lower carbon and hydrogen ratio than gasoline therefore the complete combustion will be resulted.…”

Section: Introductionmentioning

confidence: 94%

Evaluation of Performance and Emission of SI Engine Fuelled with CNG at Low and High Load Condition

et al. 2015

View full text Add to dashboard Cite

An experimental study was conducted to evaluate the performance and emission of spark ignition (SI)engine fuelled with CNG at low and high load condition. This study is the series activity of research, design and development of conversion kit for gas fuelled vehicle in the author laboratory. The SI engine that used in this study is Honda L15A, four cylinders, 1,497 cm 3 using electronic control unit. Three different fuel system namely standard gasoline fuel system, commercially CNGconversionkit and proposed CNG conversion kit designed by Research Centre for Electrical Power and Mechatronics -Indonesian Institute of Sciences, all of them utilized with fuel injection system and electronic control unit were used in this study. The test was conducted on the 25% and 80% throttle opening position with engine speed over 4,800 rpm. The results show that the maximum brake power at 25% throttle opening position of SI engine using commercially CNG conversion kit (19.00 kW) is almost same with SI engine using proposed CNG conversion kit (19.68 kW), while for 80% throttle opening position the maximum brake power of SI engine using proposed CNG conversion kit (38.67 kW) is higher than commercially CNG conversion kit (34.29 kW). The emission of CO and HC at 80% throttle opening position is lower than at 25% throttle opening position for both of SI engine using commercially and proposed CNG conversion kit.

show abstract

“…In addition, the fuel concentration information is necessary for understanding fuel-air mixing mechanism and calibration of spray model. To achieve the quantitative concentration measurements, laser-based techniques are commonly used, such as the planar laser induced fluorescence (PLIF) [9,10], the laser absorption and scattering (LAS) [11,12], the laser induced breakdown spectroscopy (LIBS) [13,14] etc. The PLIF technique is a most popular technique for concentration measurements.…”

Section: Introductionmentioning

confidence: 99%

Quantitative measurements of fuel concentrations in direct-injection methanol-n-hexane sprays by laser induced breakdown spectroscopy

Zhang

Wang

Wei

2021

ICLASS

View full text Add to dashboard Cite

Methanol is considered to be one of promising alternative fuels, and direct-injection (DI) of methanol-gasoline blends is attracting more and more interest due to the thermal efficiency advantages. However, quantitative measurements of component concentrations in DI methanol-gasoline blend sprays are still difficult. In this study, a novel approach based on the laser induced breakdown spectroscopy (LIBS) is developed to quantitatively and simultaneously measure the gas concentrations of n-hexane and methanol in methanolgasoline blend sprays in a constant volume vessel. Firstly, the calibrations between peak intensity ratios (PIR) of H656/N745 and atomic number ratios (ANR) of H/N, and PIR of O777/N746 and ANR of O/N are established respectively for three kinds of fuels (M0, M50, M100). The results show a good consistency of calibration curves for different fuels and different ambient pressures, suggesting the potentials of LIBS to measure multi-component fuels even at varied-pressure conditions. Then, the high-speed shadowgraph and diffused back-illumination method are employed to simultaneously image the entire spray and the liquid phase, and therefore determine the LIBS measuring positions. Finally, the fuel concentration measurements in M0 and M15 sprays are conducted and the radial distribution and the effects of ambient pressure are investigated. It is found that the blending fraction in M15 spray is increased with the radial distance increasing due to the lower boiling temperature and higher vapor diffusivity of methanol. The equivalence ratios in both M0 and M15 sprays are reduced with the increased ambient pressure, which can be attributed to the larger air density while nearly constant entrainment speed at higher ambient pressure. These results are believed to be valuable for development of numerical models and design of DI combustion systems.

show abstract

Quantitative imaging of equivalence ratios in a natural gas SI engine flow bench using acetone fluorescence

Cited by 10 publications

References 19 publications

An experimental investigation on the flow structure and mixture formation of low pressure ratio wall-impinging jets by a natural gas injector

An experimental investigation on the flow structure and mixture formation of low pressure ratio wall-impinging jets by a natural gas injector

Evaluation of Performance and Emission of SI Engine Fuelled with CNG at Low and High Load Condition

Quantitative measurements of fuel concentrations in direct-injection methanol-n-hexane sprays by laser induced breakdown spectroscopy

Contact Info

Product

Resources

About