By: TechnicalDomain
Every occasion we go to a gas pump to fill our car’s tank, we mostly have the choice of what octane quality we want to pour in. We might also see a sticker on the pump with the different ratings available in that pump and if living on the USA, you might also see the rating calculation method used for knowing those numbers.
In USA, those numbers change among 87, 89, 91 or 93 octane. Fuel with better numbers than those, is called “Racing Fuel” and 1 it is not commonly seen on normal gas stations and 2 cost is considerably higher than normal octane rating fuel. But, what about it???
Octane rating is a number to define the capacity of fuel to withstand detonation by high pressure and high temperature conditions, in a defined range. It does NOT means that 93 octane gas is way much powerful than 87 octane, like TNT is way much strong than black powder. Resistance to detonation means; how hard can we push that fuel in our engines taking in account temperature before it detonates without the spark plug lighting. When that later unwanted condition occurs|happens, it is known as pre-ignition, knocking, pinging or simply detonation. Bear in mind that it is an internal combustion engine or “Explosion engine”. Detonations are way much powerful, quicker and destructive than explosions. Detonations provide no usable power to the motor.
The better the octane rating, the more it will withstand the explained situation from occurring. Racing and muscle autos, often produce a lot of compression and high temperatures inside their motors and that is why it is normal to use very high quality rating gas on such:those vehicles.
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Richard

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