An effective method based on multi-model fusion for research octane number prediction

2021 ◽  
Author(s):  
Ningchen Fu ◽  
Zicheng Lai ◽  
Yuping Zhang ◽  
Yan Ma
Keyword(s):  
Crude Oil ◽  
Octane Number ◽  
Research Octane Number ◽  
Model Fusion ◽  
Gasoline Engines ◽  
Oil Processing

The octane number is one of the important indicators in crude oil processing, and it is related to the anti-knock performance of gasoline engines. The loss of octane number in...

PENGARUH LAJU ALIRAN BAHAN BAKAR CNG PADA PERFORMA MESIN KENDARAAN BERMOTOR

2016 ◽  
Vol 6 (2) ◽  
pp. 65
Author(s):  
Ridwan Arief Subekti
Keyword(s):  
Natural Gas ◽  
Octane Number ◽  
Compressed Natural Gas ◽  
Research Octane Number

Makalah ini membahas tentang pengaruh laju aliran bahan bakar CNG (compressed natural gas) terhadap performa kendaraan roda empat jenis minibus. Pengaturan dan pengujian dilakukan untuk mencari setelan laju aliran CNG yang terbaik agar performa kendaraan optimal. Tahap pertama dari penelitian ini adalah pemasangan peralatan kit konverter tipe injeksi sequensial pada kendaraan. Selanjutnya dilakukan pengujian performa kendaraan menggunakan  dyno  test  atau  sasis  dyno.  Pada  awalnya,  bahan  bakar  yang  digunakan  adalah  Pertamax  RON (research  octane  number)  92  yang  kemudian  diganti  dengan  CNG.  Dari  pengujian  dua  bahan  bakar  tersebut diketahui bahwa terjadi penurunan daya dan torsi kendaraan bila menggunakan CNG. Tahap berikutnya adalah melakukan pengaturan laju aliran CNG dengan cara mengatur durasi penyemprotan injektor. Hasil uji yang ditampilkan dalam bentuk grafik putaran terhadap daya dan putaran terhadap torsi memperlihatkan bahwa performa kendaraan  berbahan  bakar  CNG  dengan  pengaturan  laju  aliran  gas  meningkat  sekitar  3%.  Sedangkan  bila penggunaan CNG dibandingkan dengan Pertamax RON 92, terjadi penurunan daya dan torsi pada kendaraan sebesar 12,4% dan 23,7%.Kata kunci : ratio laju udara, CNG, kit konverter, laju aliran gas, mesin bensin

The Effect of Adding Oxygenated Compounds to Gasoline on Automotive Exhaust Emissions

2002 ◽  
Vol 125 (1) ◽  
pp. 344-350 ◽  
Author(s):  
S. G. Poulopoulos ◽  
C. J. Philippopoulos
Keyword(s):  
Octane Number ◽  
Combustion Engine ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Research Octane Number ◽  
Oxygenated Compounds ◽  
Reid Vapor Pressure ◽  
Three Way Catalyst ◽  
Unregulated Emissions

In the present work, the effect of adding ethanol or methyl tertiary butyl ether (MTBE) to gasoline on the regulated and unregulated emissions from an internal combustion engine with a typical three-way catalyst was studied. The addition of ethanol to fuel (10% w/w) increased both the research octane number and the Reid vapor pressure of the fuel, whereas adding 11% w/w MTBE caused an increase only in the research octane number of the fuel. When the fuel contained MTBE, less hydrocarbons, carbon monoxide, and acetaldehyde were emitted in the tailpipe. The increased emissions of acetaldehyde and ethanol were the main disadvantages of using ethanol.

Run-on in Gasoline Engines

1968 ◽  
Vol 183 (1) ◽  
pp. 21-51 ◽  
Author(s):  
W. S. Affleck
Keyword(s):  
Combustion Chamber ◽  
Time History ◽  
Spontaneous Ignition ◽  
Research Octane Number ◽  
Gasoline Engines ◽  
Engine Cooling ◽  
History Of ◽  
Valve Overlap ◽  
Temperature Time ◽  
Small Valve

When the ignition of a car engine is switched off, the engine normally comes to rest within a few revolutions but, occasionally, it may continue to fire erratically for a few seconds or longer. This phenomenon is known as run-on and, for the majority of European engines, is the result of spontaneous ignition of the fuel-air mixture in the combustion chamber. Part 1 of this paper describes experiments in a single-cylinder research engine which have been made to establish the principles controlling run-on. In particular the effects of air/fuel ratio, the nature of the fuel and the pressure-temperature-time history of the fuel-air mixture in the combustion chamber have been studied, as it is known that these factors play an important part in spontaneous ignition in experiments in laboratory vessels. From these observations it has been possible to formulate a theoretical model of the run-on process which explains the salient features of the phenomenon. In particular, it shows how the gradual cooling of the engine limits the duration of run-on and also how the duration of run-on may be considered as a measure of the extent to which fuel or engine factors must be altered to eliminate run-on. Part 2 describes the application of these principles to car engines using normal commercial-type fuels. It is concluded that the following are important features in the control of run-on: the use of fuel of sufficiently high Research octane number, minimum opening of throttle at idle, sufficient time for cooling of the combustion chamber before the ignition is switched off, efficient engine cooling, and small valve overlap. Current devices for reducing exhaust emissions are likely, through their effects on these features, to increase the tendency of an engine run-on. Combustion chamber deposits, though, appear to have little influence.

Studying demulsifier reactants for crude oil processing facilities

2021 ◽  
pp. 90-104
Author(s):  
L. V. Taranova ◽  
A. G. Mozyrev ◽  
V. G. Gabdrakipova ◽  
A. M. Glazunov
Keyword(s):  
Crude Oil ◽  
Bottom Water ◽  
Oil Content ◽  
Optimal Consumption ◽  
Residual Oil ◽  
Well Production ◽  
Oil Processing ◽  
Water Cut ◽  
Required Quality

The article deals with the issues of improving the quality of highly watered well production fluid processing using chemical demulsifier reactants at crude oil processing facilities; the analysis of the use of the reactants at the Samotlor field has been made. The article presents the results of the study of the effectiveness of the "Hercules 2202 grade A" and "SNPH-4460-2" demulsifiers in comparison with the indicators of oil and bottom water processing achieved in the presence of the reactants used at existing facilities; their optimal consumption has been determined. The study has shown that the selected demulsifiers provide the required quality of the oil and water under processing at the considered oil processing facilities and can be used along with the basic reactants for these facilities. On the basis of total indicators, the best results have been achieved using "Hercules 2202 grade A" with the improved indicators of water cut and residual oil content in water by 33.9 % and 2.8 % while reducing the reactant consumption by 9.7 % compared to the basic demulsifier.

scholarly journals A Techno-economic Evaluation of Adding Silica Nanoparticles to Enhance the Demulsification Process in a Crude Oil Central Processing Facility

2021 ◽  
Author(s):  
Shireen Hassan ◽  
Babiker Abdalla ◽  
Mustafa Mustafa
Keyword(s):  
Economic Evaluation ◽  
Crude Oil ◽  
Silica Nanoparticles ◽  
Production Cost ◽  
Net Present Value ◽  
Central Processing ◽  
Oil Processing ◽  
Software Model ◽  
Processing Facility ◽  
Demulsification Process

In this study, a techno-economic evaluation of the use of silica nanoparticles to enhance the demulsification process, in crude oil, has been investigated. A software model has been developed in MS Excel of the central processing facility (CPF). A sensitivity analysis of key parameters on production cost and Net Present Value (NPV) has been carried out for different flowsheet selection options. Comparison of flowsheets on an equal plant capacity basis results in a 19% reduction in the production cost whereas comparison on a fixed annual crude oil processing basis results in a reduction in production cost of only 3.7%.

Prediction of crude oil blends compatibility and blend optimization for increasing heavy oil processing

2018 ◽  
Vol 177 ◽  
pp. 309-327 ◽  
Author(s):  
Rajeev Kumar ◽  
Ravi Kumar Voolapalli ◽  
Sreedevi Upadhyayula
Keyword(s):  
Crude Oil ◽  
Heavy Oil ◽  
Oil Blends ◽  
Oil Processing
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