scholarly journals QSPR Studies on the Octane Number of Toluene Primary Reference Fuel Based on the Electrotopological State Index

ACS Omega ◽  
2020 ◽  
Vol 5 (8) ◽  
pp. 3878-3888
Author(s):  
Long Jiao ◽  
Huanhuan Liu ◽  
Le Qu ◽  
Zhiwei Xue ◽  
Yuan Wang ◽  
...  
Keyword(s):  
Octane Number ◽  
Primary Reference ◽  
State Index ◽  
Electrotopological State

scholarly journals Investigation of Biofuels from Microorganism Metabolism for Use as Anti-Knock Additives

2017 ◽  
Author(s):  
John Hunter Mack ◽  
Vi H. Rapp ◽  
Malte Broeckelmann ◽  
Taek Soon Lee ◽  
Robert W. Dibble
Keyword(s):  
Octane Number ◽  
Spark Ignition ◽  
Metabolic Processes ◽  
Research Octane Number ◽  
Single Cylinder ◽  
Primary Reference ◽  
Si Engines ◽  
And Performance ◽  
Primary Reference Fuels

This paper investigates the anti-knock properties of biofuels that can be produced from microorganism metabolic processes. The biofuels are rated using Research Octane Number (RON) and Blending Research Octane Number (BRON), which determine their potential as additives for fuel in spark ignition (SI) engines. Tests were conducted using a single-cylinder Cooperative Fuel Research (CFR) engine and performance of the biofuels was compared to primary reference fuels (PRFs). The investigated fuels include 3-methyl-2-buten-1-ol, 3-methyl-3-buten-1-ol, 2-methylpropan-1-ol (isobutanol), and limonene. Results show that 3-methyl-2-buten-1-ol, 3-methyl-3-buten-1-ol, and 2-methylpropan-1-ol (isobutanol) sufficiently improve the anti-knock properties of gasoline.

QSPR study on the flash point of organic binary mixtures by using electrotopological state index

2016 ◽  
Vol 156 ◽  
pp. 211-216 ◽  
Author(s):  
Long Jiao ◽  
Xiaofeng Zhang ◽  
Yucui Qin ◽  
Xiaofei Wang ◽  
Hua Li
Keyword(s):  
Binary Mixtures ◽  
Flash Point ◽  
State Index ◽  
Qspr Study ◽  
Electrotopological State

A QSAR Study of Quinolones Based on Electrotopological State Index for Atoms

1994 ◽  
Vol 13 (4) ◽  
pp. 419-425 ◽  
Author(s):  
B. Llorente ◽  
N. Rivero ◽  
R. Carrasco ◽  
R. S. Martinez ◽  
E. Estrada
Keyword(s):  
Qsar Study ◽  
State Index ◽  
Electrotopological State

scholarly journals ESTIMATION OF STANDARD ENTHALPY OF FORMATION OF ALKANES IN GASEOUS STATE BY CALCULATING SIZE, STRUCTURAL AND ELECTRONIC PARAMETERS IN THE MOLECULES

2018 ◽  
Vol 35 (3) ◽  
pp. 83
Author(s):  
P. S. Verma ◽  
B. L. Gorsi ◽  
G. S. and Lovel Kalwania
Keyword(s):  
Regression Analysis ◽  
Enthalpy Of Formation ◽  
Standard Enthalpy ◽  
Standard Enthalpy Of Formation ◽  
Molecular Connectivity Index ◽  
Gaseous State ◽  
Significant Linear Correlation ◽  
Electronic Parameters ◽  
State Index ◽  
Electrotopological State

A quantitative analysis is made on the correlation ship of thermodynamic property, i.e., standard enthalpy of formation (ΔH f0) with Kier’s molecular connectivity index(1Xv),vander waal’s volume (Vw) electrotopological state index (E) and refractotopological state index (R) in gaseous state of alkanes. The regression analysis reveals a significant linear correlation of standard enthalpy of formation (ΔH f0) with 1Xv, Vw, E and R. The equations obtained by regression analysis may be used to estimate standard enthalpy of formation (ΔH f0) of alkanes in gaseous state.

Correlating Thermal Characteristics From Flow-Reactor Experiments With Primary Reference Fuel

2018 ◽  
Author(s):  
Jun-Chun Wong ◽  
Lea-Der Chen
Keyword(s):  
Test Section ◽  
Octane Number ◽  
Equivalence Ratio ◽  
Flow Reactor ◽  
Thermal Characteristics ◽  
Temperature Oscillation ◽  
Isothermal Flow ◽  
Temperature Oscillations ◽  
Primary Reference ◽  
Pyrex Tube

An experimental investigation was conducted to correlate thermal characteristics with primary reference fuel (PRF) using an “isothermal” flow reactor. Objective of the investigation was to assess whether or not thermal characteristics measured in a radiant-heated flow reactor could serve as an indicator of fuel octane number. The experimental set-up consisted of a radiant furnace and a pyrex-tube test section inside. The pyrex tube was fitted with thermocouples alongside the tube wall. Four PRF compositions of iso-octane and n-heptane were considered: 0, 65, 85 and 100% of iso-octane by volume; noted as PRF0, 65, 85 and 100, respectively. The test conditions reported in the paper set the fuel-air mixture temperature to 180 °C at the inlet of the test section and the radian furnace temperature to 345 °C. The equivalence ratio was set in the range 0.93 to 2.0. For a pre-set PRF and equivalence-ratio condition, the experiments were run with fixed mixture velocities over the range 0.019 m/s to 0.400 m/s. Over the conditions tested, the thermocouples recorded two temperature oscillations along the flow reactor for each of PRF0, 65 and 85 mixtures. Both oscillation locations moved downstream when PRF number was increased and the two oscillation locations merged when PRF was set to 85. No temperature oscillations were recorded for experiments with PRF100 mixture. The results suggest that the temperature oscillation locations from the experiments using isothermal flow-reactors can be used to correlate fuel octane number.

scholarly journals Simulating HCCI Blending Octane Number of Primary Reference Fuel with Ethanol

2017 ◽  
Author(s):  
Eshan Singh ◽  
Muhammad Waqas ◽  
Bengt Johansson ◽  
Mani Sarathy
Keyword(s):  
Octane Number ◽  
Primary Reference
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