Octane rating in gasoline: what does it mean and what happens if you don't use the right one for ... скачать в хорошем качестве

Octane rating in gasoline: what does it mean and what happens if you don't use the right one for ...

Have you noticed that when you fill up with petrol you can choose between different qualities? Or rather, octane ratings, but what does this mean and what happens if you don't use the right one for your engine? Octane rating does not measure the "power" of petrol, but its stability under compression. Its name comes from an octane isomer: 2,2,4-trimethylpentane, a molecule that is very stable against auto-ignition, which was assigned the reference value 100. The higher the octane rating, the greater the resistance of the petrol to auto-ignition. This prevents irregular combustion in the cylinder and, with it, the famous "knocking" of the engine. A petrol with a higher octane rating tolerates more pressure and temperature before igniting on its own. That is why it is ideal for high-performance engines, which operate under more demanding conditions. Bottom line: 87 octane gasoline works fine in conventional engines, while 91 or 95 is essential for more advanced and sophisticated engines. But what happens if you use the wrong octane rating in your car? If you use a lower octane rating than recommended for your car, your engine may experience "knocking." This occurs when the air-gasoline mixture ignites prematurely due to compression, generating a characteristic noise and damaging the engine. Not only does this reduce the car's performance, but it can also shorten the engine's life due to additional mechanical stress, because although virtually all cars now have sensors that help mitigate engine knock by controlling combustion, we will always see efficiency sacrificed by using a lower octane rating than recommended. On the other hand, using a higher octane rating than necessary does not improve performance or protect the engine any more. You would simply be spending extra money without obtaining additional benefits. Knowing the right octane rating for your car not only improves its performance, but also protects the engine in the long run. Did you know this about gasoline? #Science #Chemistry Follow us on Twitter:   / soypulpoculto   Follow us on Instagram:   / pulpoculto   Follow us on TikTok:   / soypulpoculto