Effect of Octane Number and Volatility of Fuels on Horsepower and Fuel Economy of Tractor Engines

1946 ◽  
Author(s):  
W. G. Ainsley ◽  
W. F. Strehlow
Keyword(s):  
Fuel Economy ◽  
Octane Number

Application of nano-additive to gasoline to increase environmental safety and fuel economy of cars

2020 ◽  
pp. 51-56
Author(s):  
Elena Romenovna Magaril ◽  
◽  
Romen Zelikovich Magaril ◽  
Elena Nikolaevna Skvortsova ◽  
Ilya Alexandrovich Anisimov ◽  
...  
Keyword(s):  
Surface Tension ◽  
Air Pollution ◽  
Fuel Economy ◽  
Octane Number ◽  
Environmental Safety ◽  
Individual Characteristics ◽  
Light Hydrocarbons ◽  
Mixture Formation ◽  
Evaporation Losses ◽  
The Individual

The aim of the work is to study the possibilities of improving the environmental safety and fuel economy of cars using the developed nano-additive. The results of the influence of the additive application on the individual characteristics of gasoline and engines confirm an effective decrease in the surface tension of gasoline at the interface with air and in the pressure of saturated vapors. As a result, mixture formation in the engine is improved and evaporation losses, and hence air pollution by light hydrocarbons, are reduced. The use of gasoline with the nano-additive significantly reduces fuel consumption and requirements for the octane number, the noise level during the operation of cars and increases the environmental safety of the operation of vehicles.

scholarly journals Improving Fuel Economy and Engine Performance through Gasoline Fuel Octane Rating

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3499 ◽  
Author(s):  
José Rodríguez-Fernández ◽  
Ángel Ramos ◽  
Javier Barba ◽  
Dolores Cárdenas ◽  
Jesús Delgado
Keyword(s):  
Fuel Economy ◽  
Octane Number ◽  
High Performance ◽  
Engine Performance ◽  
Design Stage ◽  
Boost Pressure ◽  
Ambient Conditions ◽  
Auto Ignition ◽  
Spark Timing ◽  
Octane Rating

The octane number is a measure of the resistance of gasoline fuels to auto-ignition. Therefore, high octane numbers reduce the engine knocking risk, leading to higher compression threshold and, consequently, higher engine efficiencies. This allows higher compression ratios to be considered during the engine design stage. Current spark-ignited (SI) engines use knock sensors to protect the engine from knocking, usually adapting the operation parameters (boost pressure, spark timing, lambda). Moreover, some engines can move the settings towards optimized parameters if knock is not detected, leading to higher performance and fuel economy. In this work, three gasolines with different octane ratings (95, 98 and 100 RON (research octane number)) were fueled in a high-performance vehicle. Tests were performed in a chassis dyno at controlled ambient conditions, including a driving sequence composed of full-load accelerations and two steady-state modes. Vehicle power significantly increased with the octane rating of the fuel, thus decreasing the time needed for acceleration. Moreover, the specific fuel consumption decreased as the octane rating increased, proving that the fuel can take an active part in reducing greenhouse gas emissions. The boost pressure, which increased with the octane number, was identified as the main factor, whereas the ignition advance was the second relevant factor.

Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

1986 ◽  
Vol 44 ◽  
pp. 548-549
Author(s):  
W. T. Donlon ◽  
J. E. Allison ◽  
S. Shinozaki
Keyword(s):  
Electron Microscopy ◽  
Automotive Industry ◽  
Fuel Economy ◽  
High Strength ◽  
Al Alloys ◽  
Light Weight ◽  
Thin Sections ◽  
Strength And Durability ◽  
Rapidly Solidified ◽  
Whitney Aircraft

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

The Relation of Locomotive Maintenance to Fuel Economy

1918 ◽  
Vol 86 (2218supp) ◽  
pp. 11-11
Author(s):  
Frank McManamy
Keyword(s):  
Fuel Economy

Fuel Economy

1918 ◽  
Vol 86 (2225supp) ◽  
pp. 123-123
Keyword(s):  
Fuel Economy
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