VehiclesFashionRecipesBlogsHuntTravelsSportFunHandmadeITEducation
Mini-Games
x

x
zakruti.com » Knowledge, science, education » TED-Ed
This is what happens when you hit the gas - Shannon Odell

This is what happens when you hit the gas - Shannon Odell

FBTwitterReddit

video description

Rating: 4.5; Vote: 2
Explore the differences between how a car s internal combustion engine and an electric vehicle s induction motor use fuel. In 2015, two men drove a Volkswagen across the US on just over 100 gallons of fuel. Their 81-mile-per-gallon performance doubled the car s estimated fuel rating, and set the record for the lowest fuel consumption ride of a diesel car. The duo were experts in techniques that maximize fuel efficiency. So, how did their strategy save fuel? Shannon Odell explores what s going on beneath a car s hood.
Date: 2023-09-05

Comments and reviews: 20


As mentioned in the video, a normal combustion engine has a lot of moving parts. Each interaction is a point of friction and therefore loss of energy. Another thing to keep in mind is that they require cooling, oiling, and quality of life accessories. That means pumps to move various liquids around. Coolant and oil to keep the engine from destroying itself. Hydraulic fluids for power steering and breaking. Even your AC requires a pump and fan to cool your cabin. These are all leeches on power that would otherwise go towards the wheels. If you ever wonder why we have turbochargers instead of superchargers, this is the main reason why. Supers are driven by a belt connected to the engine, another power leech. You still gain more power than is lost, but worse than a turbo. Turbos, on the other hand, are driven by the exhaust of the engine, energy that would've been gone out of the tailpipe. There is still a small loss in power from a turbo, but that's mostly because it requires the engine to do a little bit more work to push exhaust through the turbo. For both chargers, the reason why you gain more power than is lost is because they compress the incoming air for the engine. More air means more fuel and better combustion.
reply

Sure the EV has better energy delivery and preservation in its application but the process to produce the batteries alone have far reaching implications that we do not yet have a solution for. For one, the toxic byproducts in production are now simply stored in underground bunkers in third world countries. And these batteries have a lifespan and they are not recyclable. They again needs to be properly stored at end-of-life. Also, the charging mechanic means power grids need to be able to cope, which just shifts the power demand from one medium to another. I'm not knocking on this tech but this is far from sustainable when the developed countries simply ship the wastes, from production and end-of-life, to third world nations and label this as green in their own land.
reply

EVs are probably not the best solution for going eco friendly. I do not understand why no one highlights the high environmental impact of manufacturing EV batteries. We have a very limited amount of rare earth metals like Lithium needed for making batteries, the mining process causes a lot of pollution and we have no successful strategies for large scale battery recycling. We should really invest into cleaner fuels like Hydrogen as a means to reduce our carbon emissions. Or come up with far cleaner and safer and environmentally friendly alternatives to Lithium Ion based batteries, such as Sodium Ion batteries.
reply

Very good explaination of the driving strategy to exploit the engine efficiency. On the other hand this video contains some misleading information. You cannot compare electric energy of the battery and chemical energy of the fuel. A thermodynamic machine is needed to convert chemical energy to mechanical work, while electric energy is already mechanical energy stored as electric potential in the battery. Hence the comparison battery/fuel tank is not fair and misleading. I expected a better content form TED, especially on the scientific side. No one is going to get advantage from erroneous informations.
reply

A major problem with EV vehicles is the amount of time it takes to recharge it away from home. Additionally, the lack of EV charging stations. You simply can't just freely drive where ever you want. It has to be a planned destination to determine if you have enough juice to get there and back. It makes road trips difficult or nearly impossible. For this reason I will never adopt an EV vehicle until there's a real solution or drastic improvement on fast charging time
reply

4: 20 I can t disagree with this more. Most parts in a combustion car are replaced as an assembly nowadays so you really don t have that many parts. Also please pop the hood of an electric car, and take a look at the wires and cooling systems, I had to replace the rubber bushings of motor mounts of two experimental 2025 Audi SUVs because the engineers think the original ones are too soft, and I had to drop the whole subframe to replace 3 rubber bushings.
reply

1: 37 Minor correction: The fuel-air mixture is specific to gasoline engines only. In diesel engines, air is compressed first, and then diesel is sprayed onto it. This method allows for greater air compression without the risk of the mixture self-igniting, resulting in more thermal efficiency which can yield more power from the same amount of fuel. This is one of the reasons diesel engines are more efficient than gasoline ones.
reply

Love how this entire thing just turned into an advertisement for electric cars, when we still haven't got around the problem of they cost twice as much as gas powered cars and they can't even go 500 miles on a single charge, and takes all day for it to, we could ever get an electric car that gets 1000 miles on a single charge only takes 30 minutes to charge and cost the same as a gasoline car then we can finally talk
reply

another key point that i think was missed in this video
the EVs are usually powered by electricity thats said to be generated mostly by coal power plants. and people say thats equivalent to an internal combustion engine run car. what most people miss out is that the processes used to convert fuel in powerplants are much more efficient than an internal combustion engine

reply

What is this hit piece on ICEs. Electric cars aren't good enough yet, you still need to run one for years to break even with ICE emissions in a lifetime analysis since they take so much energy to produce in the first place. They aren't there to save the environment, they are there to save the car companies. A properly efficient vehicle is a train.
reply

Electric vehicles are part of the future, but they are manifestly not the future.
Electric-powered cars are not on the road to a renewable and clean future.
They are powered by lithium-ion batteries that will pose a real threat to the environment if continued to be manufactured at the rate of current gasoline-powered cars.

reply

Diesel exhaust contains particulate matter air pollution which causes hundreds of thousands of premature human deaths every year and multiple diseases. It also contributes to climate change and climate change impacts are harming billions of life forms on this planet and harming human economies every year.
reply

Finally I ve come across a topic that I know inside out(literally) and I ve learned one thing today, TED is not all that accurate with their information and it s so so basic it didn t even scratch off the oxide layer of the metal. I can t imagine how many mistakes it has in other topics.
reply

Wouldn't it be great if we built a very big vehicle, with enough space for let's say, 60 people and instead of everyone going everywhere in their own 2 ton bulk of steel, it drove to certain important places all around town where people could then get on and off said vehicle?
reply

OK so just don t say about how taxing the grid makes negligible when offsetting carbon emissions, or the fact that getting the lithium for these, Evies is just as bad, if not worse for the environment, or that it takes more resources to make an EV versus an ice vehicle.
reply

Huh. The method described at the beginning is what I try to do whenever it's possible. It just feels instinctively right. I know nothing about machinery.
Sadly, it's hard to do that when you live in a city where cars are constantly stuck in traffic jams.

reply

I am a Eeengineering student I have a idea to udr heat produce in electric or ice cars into Electricity and also to use heat produce in a system can be use to creat electricity but no one is taking ma serious and i think my ideas will b lost with me one day.
reply

Thank you for sharing your insights and recommendations. Its great to explore various investment options, especially well-known companies like Cannafarm Ltd that are gaining popularity. Adding different ventures to our portfolio can help reduce risks in
reply

The best way to cut emissions in transportation is to ride a bike or take public transit. It is not to buy a 2t pile of lithium, rubber and aluminium to replace your old 1t pile of just rubber and aluminium. This video is car industry propaganda.
reply

I dont know, all of this sounds questionable, with too many potential pitfalls. I believe there are more reliable options out there. I recently found a company called Cannafarm Ltd, and Ive been consistently earning with them. I think its better to foc
reply
Add a review, comment






Other channel videos