Gasoline - How it works | Science Garage | Donut Media

**The Miraculous Fuel: Unraveling the Mysteries of Gasoline**

WEBVTTKind: captionsLanguage: enGAS! It’s in car, and it’s in your butt. And it’s on my mind. Alright, let's light stuff on fire! This is cars down to the atom. Gasoline.

Turns out it’s not just for huffing and getting high. It’s also for your cars and lawnmowers and leaf-blowers! It’s so good at what it does that it powers almost anything with a motor. But what is it?

Gasoline comes from Petroleum Oil, which comes from organisms breaking down over millions of years. In the mid 1800s, people began trying to separate it out – to get rid of the crap – to REFINE it.

Now we have all kinds of liquids and oils that come from petroleum and they burn really really well. Starting with just the name – it sounds like a chemical… but Gasoline is actually a mix of a ton of different chemicals, all really good at burning.

Its name GAS-O-LINE is made up! To sell this new fuel, they combined the word GAS, which people knew could be fuel – as in a GAS LAMP, with the suffix OL, which sounded like it came from oil, and rounded it off with ENE – which... made it sound chemical-y.

In England they just call it petrol, because it comes from petroleum oil. We just arbitrarily named it Gasoline. Here’s basically how an engine works – air comes in this shaft, it gets mixed with gas as it’s compressed by the piston, and when it’s right at the top, a spark ignites the mixture, and kaboom! It drives the piston, and that drives the engine.

In the explosion, gas combines with oxygen to give off energy. One gallon of gas will combine with 20 lbs of oxygen. That’s a lot of air! But it creates a lot of power – it also makes 18 lbs of Carbon Dioxide, and Eight and a half pounds of water. You ever notice water coming out of your tailpipe when it’s running? That’s because it’s a by-product of the tiny explosions going on in your engine!

This is a Five gallon jug, there’s air in there, which means there’s oxygen, just like there’s oxygen out here. I did the math, and there should be enough oxygen to burn about two tablespoons of gasoline. What a coincidence, I happen to have two tablespoons of gasoline right here.

All we need to combine the oxygen in the jug with the gasoline is a spark. James is going to act as our fuel injector. I’m a fuel injector! This is going to be like the cylinder in your car, and I’ve rigged up this ignition coil to give us a spark. Don’t do this at home, because it’s stupid. Yeah, do it at work.

That was fun, huh? You guys see how scared James was? What happened in the Jug is a little different than what happens in your engine – because in your engine, the air is under compression. Compressing air makes for another challenge. Air is a bunch of molecules all rubbing against each other – when the air gets compressed, those molecules start moving really fast and they make it hard to breathe.

But let's get back to gasoline. It started as rotten ancient bug juice, we’ve refined petroleum into this miracle fuel that drives almost everything... So now you know a little bit more about Gasoline, what it is, how it works, and what all that stuff at the pump means.

Can we blow something else up? Yeah. Let’s use ethanol. The longer we wait, the bigger it will be. This is ethanol. They put it in Gas. You also put it in your belly. It gets you crunk.

Thanks for watching, guys! Don’t forget to like, subscribe, comment and share. I had a blast! I’m going to be doing this every week. We’re going to talk about the nitty gritty about cars. How they work, what’s in ‘em. I wanna know what you guys wanna know.

Tell me what you guys wanna see us blow up! What you guys would like to see cut in half? What do things look like on the inside? I need an excuse to do stupid stuff. Give me an excuse! Let’s get into it together. Let’s find out how cars work! Don’t tell my wife I did this!

WEBVTTKind: captionsLanguage: enGAS!It’s in car,and it’s in your butt.And it’s on my mind.Alright,Lets light stuff on fire!This is cars down to the atomGasoline.Turns out it’s not just for huffing andgetting high.It’s also for your cars and lawnmowers andleaf-blowers!It’s so good at what it does that it powersalmost anything with a motor.But what is it?Gasoline comes from Petroleum Oil,which comes from organisms breaking down over millions of years.In the mid 1800s, people began trying to separateit out- to get rid of the crap- to REFINE it.Now we have all kinds of liquids and oilsthat come from petroleumand they burn really really well.Starting with just the name--- it soundslike a chemical… but Gasoline is actuallya mix of a ton of different chemicals, allreally good at burning.Its name GAS-O-LINE is made up!To sell this new fuel, they combined the wordGAS, which people knew could be fuel- as ina GAS LAMP, with the suffix OL, which sounded that it came from oil, and rounded it offwith ENE- which… made it sound chemical-y.In England they just call it petrol, becauseit comes from petroleum oil.We just arbitrarily named it Gasoline.Here’s basically how an engine works- aircomes in this shaft, it gets mixed with gasas it’s compressed by the piston, and whenit’s right at the top, a spark ignites themixture, and kaboom!It drives the piston, and that drives theengine.In the explosion gas combines with oxygento give off energy.One gallon of gas will combine with 20 lbsof oxygen.That’s a lot of air!But it creates a lot of power- it also makes18 lbs of Carbon Dioxide, and Eight and ahalf pounds of water.You ever notice water coming out of your tailpipewhen it’s running?That’s because it’s a by-product of thetiny explosions going on in your engine!This is a Five gallon jug, there’s air inthere, which means there’s oxygen, justlike there’s oxygen out here.I did the math, and there should be enoughoxygen to burn about two tablespoons of gasoline.What a coincidence, I happen to have two tablespoonsof gasoline right here.All we need to combine the oxygen in the jugwith the gasoline is a spark.James is going to act as our fuel injector.I’m a fuel injector!This is going to be like the cylinder in yourcar, and I’ve rigged up this ignition coilto give us a spark.Don’t this at home, because it’s stupid.Yeah, do it at work.That was fun, huh?You guys see how scared James was?What happened in the Jug is a little differentthan what happens in your engine-because in your engine, the air is under compression.Compressing air makes for another challenge.Air is a bunch of molecules all rubbing againsteach other- when the air gets compressed,those molecules rub together more,and when they rub together they generate heat.More compression means More heat.In a hot engine, there is a chance, that fuelwill combust without a spark.That’s called engine pinging, or pre-ignition-and that’s bad.If the explosion happens at the wrong time,you’re not going to get the performanceyou should, the piston and combustion areworking AGAINST each other- and you risk damaging your engine.Originally, they fixed it by adding lead tothe fuel.Because lead made the gas more stable at hightemperatures.No More Pinging.But we stopped doing that because puttinglead in everything is dumb and hurts your brain.That’s why all the gas at the pumps saysUNLEADED.That’s also why paint chips don't taste asgood anymore.Guys. what are we doin?I gotta have my chips!What are those numbers on the pump?87?89?91?That’s the octane rating.The higher the octane rating, the more resistantthe gas is to pre-igniting--What the hell is an Octane rating?Octane is chemical like gas that’s superresistant to spontaneous ignition, so we useit as a standard by which we measure gasoline.The Octane Rating--that's the number you see at the pump--isn’t how much Octane is in the Gas,it’s just how well that gasoline mixture resists ignitionunder pressure COMPARED to Octane.For example, 87 is 87% as good as octane atreducing pre-ignition.So that’s why high performance cars withturbochargers, and high compression enginesgotta make sure they use high octane gas so it doesn’t combust early under all that pressure.Does higher octane gas better for my engine?Not necessarily.Will Higher Octane gas help clean my engine?No!Higher octane gas will not ignite until it’ssupposed to.That’s what it means.If you don’t drive a car that needs higheroctane gas,you’re better off using 87 like the rest of us peasants.So, it started as rotten ancient bug juice,we’ve refined petroleum into this miraclefuel that drives almost everything…So now you know a little bit more about Gasolene,what it is, how it works, and what all thatstuff at the pump means.Can we blow something else up?Yeah.Let’s use ethanol.The longer we weight, the bigger it will be.This is ethanol.They put it in Gas.You also put it in your belly.It gets you crunk.Thanks for watching, guys!Don’t forget to like, subscribe, commentand share!I had a blast!I’m going to be doing this every week.We’re going to talk about the nitty grittyabout cars.How they work, what’s in ‘em.I wanna know what you guys wanna know.Tell me what you guys wanna see us blow up!What you guys would like to see cut in half?What do things look like on the inside?I need an excuse to do stupid stuff.Give me an excuse!Let’s get into it together.Let’s find out how cars work!Don’t tell my wife I did this!I’ll see you guys next week!