By default, it was defined by the federal government that the regular (and the lowest) octane standard in Brazil is 92 RON, known in Portuguese as, Canada: in Canada octane rating is displayed in AKI. It was developed in the 1920s and is still reliable today. The net result is that to make a given amount of power, more high-octane fuel must be burned in the engine. Les stations Total et Shell ne vendent que de l'essence RON 92 et 95. Parce que l'octane est une évaluation mesurée et / ou calculée de la capacité du carburant à résister à l'auto-inflammation, plus l'indice d'octane du carburant est élevé, plus ce carburant est dur à enflammer et plus il faut de chaleur pour l'allumer. Licensed under CC BY-SA 2.5 via Wikimedia Commons -, http://commons.wikimedia.org/wiki/File:Gas_Station_Pump_Five_Octane_Ratings.jpg#mediaviewer/File:Gas_Station_Pump_Five_Octane_Ratings.jpg, http://retail.petro-canada.ca/en/independent/2069.aspx, http://alternativefuels.about.com/od/researchdevelopment/a/cetane.htm, http://www.bellperformance.com/blog/bid/101182/What-Does-Octane-Do-In-Gasoline-Octane-Ratings, http://auto.howstuffworks.com/engine-knock1.htm, https://energyeducation.ca/wiki/index.php?title=Octane_rating&oldid=9222.
Lorsque l'indice d'octane est augmenté par mélange dans de l'éthanol, la teneur en énergie par volume est réduite. SAE Int. 6(1):44-54, 2013, doi:10.4271/2013-01-0888.
Motor Gasoline Regular (commercialisé sous le nom «Essence») qui a une cote RON 80, et Motor Gasoline Premium (commercialisé sous le nom «Octane») qui a une cote RON 95. Avec leurs densités et poids réduits par volume de carburant, l'autre avantage évident est qu'un avion avec un volume donné de carburant dans les réservoirs est automatiquement plus léger. Les stations-service au Bangladesh sont privatisées, mais les prix sont réglementés par les autorités et ont un prix fixe de 86,00 BDT (1,04 USD) et 89,00 BDT (1,07 USD) (au 1er mars 2018) par litre respectivement. Pakistan: 3 types of fuel available. Mais après l'augmentation des prix à nouveau en 2018, le prix de 95 RON n'est devenu que 15% plus élevé que celui de 92 RON, il a donc commencé à gagner en popularité. It is possible for a fuel to have a Research Octane Number (RON) more than 100, because iso-octane is not the most knock-resistant substance available. Turkey: 95 RON and 95+ RON widely available in gas stations. Venezuela: 91 RON and 95 RON gasoline is available nationwide, in all PDV gas stations. Stein, R., D. Polovina, K. Roth, M. Foster, et al. Indonesia: Indonesia's "Premium" gasoline rated at 88 RON. Most refiners produce and market more than one grade of motor gasoline, differing principally in their anti-knock quality. Octane ratings are measures of fuel stability. Octane rating is a measure of a fuel's ability to resist ‘knock.’ The octane requirement of an engine varies with compression ratio, geometrical and mechanical considerations, and operating conditions. Airplanes are still allowed to use leaded gasoline (known as AvGas), and octane ratings of 100 or more are commonly used in super-high-performance piston airplane engines. Poland: Eurosuper 95 (RON 95) is sold in every gas station. Effect of Heat of Vaporization, Chemical Octane, and Sensitivity on Knock Limit for Ethanol - Gasoline Blends, Effects of Fuel Octane Rating and Ethanol Content on Knock, Fuel Economy, and CO2 for a Turbocharged DI Engine, Effects of High-Octane Ethanol Blends on Four Legacy Flex-Fuel Vehicles, and a Turbocharged GDI Vehicle, Octane Response of Premium-Recommended Vehicles, Understanding the Octane Appetite of Modern Vehicles, Effects of High-Octane E25 on Two Vehicles Equipped with Turbocharged, Direct-Injection Engines. Un indice d'octane , ou indice d'octane , est une mesure standard des performances d'un moteur ou d'une essence d'aviation. Selling your car? La plupart des raffineurs produisent et commercialisent plus d'une qualité d'essence à moteur, qui diffèrent principalement par leur qualité anti-cliquetis. Turquie: 95 RON et 95+ RON largement disponibles dans les stations-service. Les systèmes de gestion de moteur les plus couramment utilisés dans les automobiles d'aujourd'hui ont un capteur de cognement qui surveille si un cognement est produit par le carburant utilisé. Higher octane ratings correlate to higher activation energies: the amount of applied energy required to initiate combustion. The selection of octane ratings available at filling stations can vary greatly between countries. Mexique: l'indice d'octane standard est de 87 AKI pour le carburant «ordinaire» et de 92 AKI pour le carburant «à indice d'octane élevé». In a normal Otto cycle spark-ignition engine, the air-fuel mixture is heated as a result of being compressed and is then triggered by the spark plug to burn rapidly. Many newer vehicles can adjust the spark timing to reduce knock, but engine power and fuel economy will still suffer. The other rarely-discussed reality with high-octane fuels associated with "high performance" is that as octane increases, the specific gravity and energy content of the fuel per unit of weight are reduced. Gasoline engines rely on ignition of air and fuel compressed together as a mixture, which is ignited near the end of the compression stroke using electrically activated spark plugs.

We can help you calculate and track your fuel economy. Il s'agit généralement des acides chlorhydriques qui se forment en raison de cette eau et des composés du carburant qui ont les effets les plus néfastes sur les composants du système d'alimentation du moteur, car ces acides corrodent de nombreux métaux utilisés dans les systèmes d'alimentation à essence. The most common type of octane rating worldwide is the Research Octane Number (RON). © 2020 ExxonMobil. Octane rating is a measure of a fuel's ability to resist ‘knock.’ The octane requirement of an engine varies with compression ratio, geometrical and mechanical considerations, and operating conditions. Les octanes sont une famille d'hydrocarbures qui sont des composants typiques de l'essence. Les véhicules indiens de classe économique ont généralement des taux de compression inférieurs à 10: 1, ce qui leur permet d'utiliser de l'essence à faible indice d'octane sans cogner le moteur. During the compression stroke of an internal combustion engine, the temperature of the air-fuel mix rises as it is compressed, in accordance with the ideal gas law. Récemment, Hindustan Petroleum a lancé le power 99 avec une valeur RON de 99 qui est actuellement disponible uniquement à Bangalore, Pune et maintenant à Mumbai mais devrait bientôt être déployé dans d'autres grandes villes. Il a été développé dans les années 1920 et est toujours fiable aujourd'hui.

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