Thursday 29 September 2022

Alajuelita Gas Station Shut Down For Selling Gasoline With High Octane

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29 September 2022 - At The Banks - BCCR

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The Regulatory Authority for Public Services (Aresep) has shut down an Alajuelita gas station after discovering it sold fuel with higher octane levels than permitted, which affects vehicles.

gasolina-652x300The closure was ordered of the gas station located 200 metres south and 100 metres east of the Alajuelita Catholic church.

The Aresep said it has not issued economic sanctions, just ordered a ban on the sale of gasoline until it meets requirements. The station can continue to pump diesel fuel.

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Understanding Octane
Octane rating or octane number is a standard measure of the performance of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating. In broad terms, fuels with a higher octane rating are used in high-compression engines that generally have higher performance.

To understand the role that octane ratings and ignition pressures play in a motor, it helps to be familiar with the term ‘knock.’ Essentially, when gasoline is sprayed into a cylinder by a fuel injector and mixed with oxygen, engine designers expect it to remain there in vapor form until it is time for the sparkplug to light it up, causing the explosion that drives the piston down to generate horsepower. The timing of this explosion is critical, as gasoline that ignites too early causes ‘knock,’ which reduces engine output and efficiency and which, in worst-case scenarios, can actually physically damage an engine.

In most engines, knock is rarely an issue because the compression ratio – that is, the pressure that the air/fuel mixture is put under in the cylinder – is low enough that Regular gasoline’s octane rating is sufficient. There is absolutely no benefit to running Premium fuel in a standard motor, since it will never be able to take advantage of that gasoline’s higher knock resistance. However, more aggressive engine management schemes, especially those found in turbocharged or supercharged vehicles, can turn up the compression to a high level, requiring much higher octane gasoline to avoid knock.

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