Why Gas Engines Are Far From Dead - Biggest EV Problems

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Engineering Explained

Engineering Explained

2 yıl önce

YORUMLAR: 27 355
ctopheroh
ctopheroh
Excellent video. One additional point on the cost difference. I bought a first generation Nissan Leaf in 2012. Great car. Saved me a fortune on gas, oil changes, etc. However, now, 10 years later, the battery has "worn" to the point that the range (which was only a fraction of a gasoline-powered vehicle to begin with) is now about 2/3 of what it was new. As the car has aged, I've found more and more places that I'm afraid to go. Range anxiety is not only a factor at initial purchase, it's a cancer that steadily gets worse as the car ages. So why not replace the batteries? The current estimate for new batteries for my Leaf is about $7500. Not only is this more than the value of the car, it more than offsets ALL of the savings during the last 10 years.
Science Over Feelings
Science Over Feelings
As someone with a chemistry degree, I find it very hard to get others to grasp the concept of energy density and all the problems with switching fuels. Your hands-on demo did a great job of that. One thing I like to do is take their car's MPG value and determine how much gasoline it takes to move it 1 mile. They are usually shocked when they find out how little it takes - usually a couple ounces (vol). Then compare that with a battery or other fuel and they start to understand how lucky we are to have such an energy-dense fuel like gasoline. As a cherry, you can calculate the mass moved per teaspoon of gasoline (by using the weight of the car). That's also a shocker value when they hear it. In any event, great video. I know it's a few years late, but wanted to say good job!
dberker
dberker 14 gün önce
Great video! I'd like to see a 10 year comparison between an EV and a gas car with all variables included that take a toll on the planet, such as mining, assembly, charging, driving, and eventually the impact of disposal. I believe, in the end, that the EV is not 2x more clean. It just appears that way to those in the middle of the entire process - the user. All the other variables are often ignored or not considered by the user. I'm not against EV, but I think it makes a better informed consumer to have all the info and that inherently will transmit back into the companies to improve an overall better process for whichever technology will have the best benefit in the end. To borrow a phrase for Thomas Sowell, we all should get better at looking past stage one.
Dean Douglas-Latka
Dean Douglas-Latka
It would be neat to see a yearly cost comparison for each an EV, Petrol & hybrid for local hometown work and school use with occasional at the weekend car journey within range. 3 average working family cars, nothing fancy.
Ryan A
Ryan A
Would love to see a video on the amount of mining that goes into making a single EV battery and charging energy VS the amount of oil a ICE car uses over its lifetime.
3800 Turbo Track Days.
3800 Turbo Track Days.
Be interesting to re-do this calc for 2022 to see how far they have come.
Derry Lappin
Derry Lappin 2 yıl önce
Energy density comparison was good, however I would like to see energy conversion efficiencies considered.
Jason Clark
Jason Clark 14 gün önce
It would be awesome to see a video comparing gas, diesel and hybrid.
N Virostk
N Virostk
Good video. Love the practical, common item examples. One point that should be made is the gasoline engines have around a maximum 33% efficiency converting the latent energy of gasoline into mechanical energy, while electric motor and their required variable frequency drive partners have efficiencies in the mid-90% range. ICE engine powertrains also have transmissions and axles/differentials that are mid-90% efficiency while the electric powertrain has a single speed gearbox/differential operating in the high-90% zone. Doing algebra with a lot of rounding, we end up with ICE powertrains at 30% and electric powertrains at 75%. This means you need to take more than half the LaCroix cans off the table because it is a 2.5:1 ratio for the energy that actually gets to the road.
matt81093
matt81093
Definitely think more development should happen regardless. Like "technology of old". Love steam engines and trains personally, but there are other great things out there that I just don't think about.
Daniel D
Daniel D
I think a good application for electric vehicle is farm tractors. Weight is not an issue actually its desired. Most everything is run by hydraulics so converting a tractor would be relatively easy. As far as space for the battery, I use a ballast box filled with sand as a counterweight for when I use the loader, that very well could be a battery pack that could easily be changed when needed.
Noah Maurano
Noah Maurano
Thank you so much for all your research and mathmatics! I love my electric skateboard(born from a love of gas skateboards), but I also love my $4k ford focus(42mpg and can carry 10ft lumber!) cant wait to see the future of petroleum vehicles!
Ross Riley
Ross Riley
A recent road test of a Ford F150 Lightening pulling a 6000-pound (the truck is rated for 10,000 pounds) boat had to be cut short because the truck had to turn around and limp home with only 19% battery life left. The truck had only gone 80 miles.
James Feezer
James Feezer
Nice vid 👍 I should see how much its changed over the last three years.. took a strong interest in hybrid cars years ago my buddy has one and it's pretty great.
MerLin613100
MerLin613100
I want to watch a video on the comparison of end of life of ev vs ice cars. For instance, what will the environmental impact be ten years hence, if all cars were ev's instead of ice's.
Chase Newberry
Chase Newberry 14 gün önce
Great points. An important one you didn't bring up is the experience of driving. ICEs will always (to me) be more engaging, exciting, communicative, etc than an ev. I don't think I'm the only person that feels that way
John B
John B
One other point: I recently watched a TRshow video (can't remember who) who did a comparison between a mid-range petrol vehicle, & a similarly-priced EV, including production costs. The break-even point was around 80 000 miles. And that was with a full-fuel/charge ration of ~400Miles (EV)/+600Miles(petrol).
Daniel Le Couilliard
Daniel Le Couilliard
Can you make a video to explain why 100% of the emissions can't be filtered from the exhaust pipe so that a ICE is 100% pollution free. With an effective filtration system that is swapped out per refuel won't this be a huge impact to carbon emissions?
85superHamster
85superHamster 2 yıl önce
For anyone wondering why fuel has so much more energy density than batteries: Fuel requires oxygen, which isnt stored in the car. By being able to take in oxygen along the way without storing it significantly reduces the mass that needs to be transported. In order to burn 1kg of octane it takes over 2kg of oxygen.
Spence Sanders
Spence Sanders
Another thing no one mentions very often is travel range to time to fuel. I drive a fusion and these days I watch my MPG very closely. The car fits 5 passengers and their suitcases. I get around 34mpg giving me approx 476 miles per tank. It takes me between 5 and 10 minutes to refuel depending on station and if there is a line. My friend has a fully electric vehicle that claims 5 passengers, but really only fits 4 adults and only has room for two suitcases of the same size I used in my Fusion. He gets about 150 real miles and it takes him a full night to recharge. He has a 45 mile round trip commute to work and that plus regular errands means he charges every other night and always recharges if he plans to go anywhere other than the daily norm since he cannot be sure he can find a charging station. I have a 103 mile round trip commute and refuel every five days, I never worry about going anywhere because there is a gas station literally every intersection outside of the suburbs. In fact when we run into the city for a game, I always drive because they don't want to repeat the "great stranding of 2019" when they ran out of charge and there wasn't anywhere they could plug in within sight or "push" distance. Another aspect is an EV's range is drastically reduced if it is fully loaded. Yes my gas passenger car does see a reduction in range if fully loaded, but I still have a range of over 420ish miles at worst. When an EV's average range is at least 350 miles and can be fully charged in under 15 minutes, it will finally be competitive.
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