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Sam
Engineering Explained
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Comments by "Sam" (@sam512) on "The Unfortunate Truth About Toyota's Hydrogen V8 Engine" video.

@HFRG-zq1qm I would love to see your source for the mileage of a hydrogen powered RCF, because it doesn’t exist yet
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🤡
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This is the pressure required to keep hydrogen compressed yes
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@mfraze8753 well, I mean it is possible, look at the Toyota mirai, but yes, a lot of space will be allocated to fuel
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@fatheratum5033 Lexus rcf is not for sale hydrogen powered and the Mirai is not combustion
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He didn’t
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Hydrogen is not in the air as it floats up
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There is: it’s called fuel cell, not this ‘car has to make noise bull crap’
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A fully hydrogen powered car is already part hybrid because it still has a battery, and it’s already 4000+ pounds with 5 kg of hydrogen storage
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@factmanamerican882 if you think a single solar panel can generate enough hydrogen for driving your car needs to be waaayyy more efficient than possible
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Why does it have to be combustion?
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@marblox9300 that’s a little impractical for large distances
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50 miles with 60+ kWh?😂 no way in hell you use almost a kWh per mile
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You missed the entire point of the video
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Yes
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It is and will always be impossible
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That must be, why half of their lineup consists of V8 hydrogen engines. Oh wait, they don’t sell any of those
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@natesewell9402 I stand (partially) corrected: A theoretical maximum efficiency of combustion hydrogen engines can be as high as 60%, which is significantly higher than the maximum efficiency of gasoline or diesel engines, which is typically around 40%. However, in practice, the actual efficiency of hydrogen combustion engines is often lower due to factors such as heat losses, incomplete combustion, and engine friction. For fuel cells however: they are achieving up to 60% efficiency in converting the energy stored in hydrogen into electricity. The theoretical maximum efficiency is around 83% at standard temperature and pressure (STP), assuming no energy losses due to heat, pressure drops, or other inefficiencies. This is much higher with with fuel cells which have a higher efficiency after the electric engine energy loss, and as an added benefit doesn’t produce NOx.
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The mirai not combustion 😂
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Sure
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But do you really need 500 miles?
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@DinoAlberini he is probably stuck in high school
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Do you seriously think this was calculated with uncompressed hydrogen?😂
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Why combustion?
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Do you want to create energy out of nothing?
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Why use combustion?
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If the buckets were filled with gasoline, yes. Hydrogen? No
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Are you serious?😂
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You don’t refuel with oxygen
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@TonyQKing you make no sense
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Why ICE?
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@TheIceMan9304 yes, why does it have to be internal combustion?
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@TheIceMan9304 the only viable hydrogen car they build was not internal combustion
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Or maybe creating energy from the same energy is not possible
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Why do we need to burn H?
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They keep focusing on internal combustion hydrogen engines, because people want the engine to go vroom
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Do elaborate
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So what is powering the engine? Hydrogen? Because then the engine would need an efficiency of 200%
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The hydrogen 7? That joke of a car could only travel 125 miles with 8 KG of hydrogen, and if you parked it the fuel would empty in days
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Then where are all the hydrogen combustion cars?
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There is: fuel cell
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Your comment makes no sense
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Yes it can run, meaning it can very inefficiently burn hydrogen. That doesn’t mean it’s a future proof concept
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English not found
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Because people buy cars that go vroem
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So how many hydrogen cars are released each year?
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No😂
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Why would it matter if the petrol weighs more?
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So?
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No
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Does the truth hurt?
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You funny 😂
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Why do you want combustion?
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Did you not watch the video?
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It would cost a LOT of energy
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Not that scam artist again
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@stevegorr4262 there’s always someone who believes in perpetual energy
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@stevegorr4262 good luck with your search to break the laws of physics 😂
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Like?
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Why do you need combustion?
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@Antoshka91d hydrogen fuel cell is and will always be cleaner than hydrogen combustion
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@Antoshka91d kind of defeats the point of arguing for a smaller combustion engine when it’s bad either way
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So what level would be too high for you?
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If you say so
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And how are you going to turn the water into hydrogen?
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No
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‘Trying to do better’? By developing a hydrogen combustion V8? Nice try😂
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How will you survive if your car doesn’t go vroem vroem
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Imagine actually paying attention, you might understand the video😉
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@saved74 the entire video is about Toyota developing a combustion engine hydrogen car, and your counter argument is the Mirai?
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If you say so
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Every hydrogen powered fuel-cell car I know already uses hydrogen to charge a battery, because the conversion from hydrogen to electricity is not nearly as instant and direct as the driver needs
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Terribly inefficient
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They already do
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@djp1lly830 the Tobacco industry loves vapes 😂
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With what energy?
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No😂
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Not the V8
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This is why there are no serious hydrogen combustion cars
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Sure 😂
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Exhausts
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This car isn’t fuelled by water
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@Saveamerica20245 water does not produce hydrogen gas without electrolysis, which cannot be made easily
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He is talking about compressed volume 😂
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It’s already pressurised with 10.000 PSI
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With what car?
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No
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🤡
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Yes… unless you don’t produce hydrogen green…
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Except electric cars were very efficient from the start, hydrogen is not
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@jschwenz8153 with almost 100% efficiency you can only produce 60% of the used hydrogen back, and combustion engines can never be almost 100% efficient. The 60% also assumes you use all energy from the engine to generate hydrogen, so there would be none left to actually drive
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What a waste of energy
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@HFRG-zq1qm so?
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So did they post any details or is it all a fantasy?
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No
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Oh really? How come?
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🤣
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Maybe if you watched again you would actually understand
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Do you want to break the laws of nature?
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Very inefficient
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And the earth is flat
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With what energy?
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So would you need a combustion car?
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Sure😂
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Sure
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Sometimes I wonder if people like even watch the video
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Which car?
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Yes: it’s called not using combustion engines
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Whenever you have no more arguments it’s time to go for the personal attack
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How does it work?
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With which car?
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What in this video is misinformation?
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@dannyglesing what is different about the type of hydrogen?
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How do you think hydrogen is produced?😂
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We can technically make hydrogen out of green electricity. It would, however, result in at least a reduction of 50% efficiency.
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Because it’s super inefficient and polluting. What more do you want?
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It can only hold 5 kg of hydrogen
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Better than you
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@PsYc0X78 then point out where his math is wrong
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You can’t burn water
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With a combustion engine? Unlikely
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Why use combustion?
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There are, just not combustion
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Where do you think clean hydrogen comes from?
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How do you think we can make green hydrogen😂
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Like?
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Why combustion at all?
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Classic American reaction, just sticker commie on it
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If you intent to only charge it at home through a wall socket 😂
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Nothing is switched
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If you say so
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Just put the video on slower if you have trouble understanding
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@yeshuarangel9070 so what, you want to generate hydrogen on board with a battery?
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With what energy?
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Haha so funny
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The solution is pretty easy, don’t go for internal combustion
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That has to be the dumbest calculation
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Where does your hydrogen come from?
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I don’t see how that is relevant
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@JobiWanification yes it is, because a gallon of gasoline has the same amount of energy as a kg of hydrogen
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@JobiWanification with what energy do you want to produce hydrogen on board?
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How much electricity is one hour of electricity?
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The Mirai is not a hydrogen combustion car
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@philipberthiaume2314 This entire video is about Toyota developing a hydrogen combustion V8, saying the mirai exists is kind off useless
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@philipberthiaume2314 yes
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@samiurrahman2255 hydrogen will probably be the future, but not with combustion engines, and not while we don’t have a massive oversupply electricity
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And what is powering the water to hydrogen converter?
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If you say so 😂
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Few thousand 😂
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Why combustion?
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You missed the point of this video
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So is any of the information or calculations untrue?
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The Toyota Mirai has hydrogen at 700 bar, it’s not compressed? sure😂
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He doesn’t use mpg
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That is a lie
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With less than 30 cent the kWh, more than 5 km/kWh, your miles per dollar would be above 10
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It’s literally powered by electric motors😂
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@bobjames1521 but let me get this straight, you want to increase the battery size on an already heavy car?
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How would they know without trying?
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🤡
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Sooooo…. Where are the hydrogen combustion cars?
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Why use a combustion engine?
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@baddogdax69 yes, they are
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So you want to use hydrogen power to turn water into hydrogen? That sounds a lot like breaking the laws of physics
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Somebody didn’t pay attention
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The truth hurts
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What if the engine is not combustion
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Did the math hurt your feelings?
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Sure buddy
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I too would get anxiety if I travelled 500 miles a day
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Does Toyota have an combustion vehicle?
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@iONLYbetWHENiWIN yet it will perform much worse than their own fuel cell engine
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It’s probably been removed because it wasn’t real
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@factmanamerican882 so you honestly believe that a perpetual motion car existed?
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But you do 😉
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Yeah I’m sure😂
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Then just use fuel cells
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Like fuel cell?
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Sure😂
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It does not
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😂 It’s fully supported by the fossil fuel company to switch to hydrogen, they are pushing that
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Why do you need a combustion engine?
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That’s a lot of words for not a single formula he has done wrong
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Why not just make a bigger tank with less pressure then?
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@10feetup needing a second tank means less space for the main tank = less fuel
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@10feetup do you have any idea how big a pressurised hydrogen tank would have to be if you want to store 5.65 kg of hydrogen?
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@10feetup the Toyota mirai has a main tank of 142L, there is absolutely no space left in that car for any additional tanks
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@10feetup hydrogen tanks are not like batteries and cannot be ‘flat’. You cannot put them under the floor
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@10feetup one way or another, dealing with pressurised tanks severely limits the shape and placement of the hydrogen
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Why does that matter?
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Not Stan again😂
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Sure 😂
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If you say so
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What😂
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Oil is big time pro hydrogen😂
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Funny how Toyota has no real hydrogen combustion cars
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Oil companies love hydrogen combustion, having engines that require oil, hydrogen is also something they would be able to transport with their infrastructure, it’s electric they hate
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Hydrogen combustion is not pollution free
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66L of hydrogen is like 3 kg
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Not an internal combustion hydrogen car
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Does the truth hurt?
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@GardylooAlaska sure😉
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@GardylooAlaska hydrogen combustion engines will never be a viable option
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@GardylooAlaska hydrogen combustion uses 4x as much energy compared to fuel cell technology, and on top of that it also produces NOx gasses, so no, I don’t see a future in them. Maybe the future is hydrogen, but not combustion
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Something cannot weigh a litre
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@cycoholic you are correct, a gallon of liquid hydrogen weighs 0.27 kg
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Does the mirai have a v8?
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@what9418 ‘as combustion’? So all combustion? Regardless of its 2 cylinder or 8?
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Their customers: bla bla bla, car needs to go vroem
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Imagine being stuck thinking you need a combustion engine
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Your comment it worthless, claiming everything is wrong without a single proof
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Nah
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@divinehatred6021 troll
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You got so many things wrong
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That’s why he uses many buckets, because hydrogen needs way more space
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Just look at fuel cells
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Is it hard to understand the video for you?
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No, a 100hp still performs wayyyy worse than the mirai
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Thank you! Finally someone says it
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The grid cannot support hydrogen
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@Gozerthegozarian1984 and how are they going to generate the hydrogen?
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Truth hurts huh
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Or maybe that’s a conspiracy because it’s not real
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No
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And where exactly is the combustion engine in the N Vision?
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While still weighing more than 4000 pounds and requiring rare earth metals
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Someone is hurt
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90 seconds? Doubtful
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Which car?
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Not quite, the inefficiency of hydrogen cannot be overcome
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They don’t, they have big fuel tanks
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Free energy?😂
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The extraordinary Toyota technology only holds 5 kg of hydrogen, such amazing
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It was a scam
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@BreatheRC it didn’t
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Yes
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The oil industry is literally pushing hydrogen
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An unpressurised hydrogen tank of 400L contains 2 grams of hydrogen
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Why does everyone go to combustion engines???🤦‍♂️
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@ronholstein7910 and where do you plan on getting all this extra hydrogen required for the inefficient combustion engine?
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@ronholstein7910 or just use fuel cells🤦‍♂️
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Car go vroom
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@Jeremiah_Johnson139 I just answered your question
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And big companies actually working on hydrogen like Toyota obviously ignore it too right?
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Does the truth hurt?
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🤡
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There’s some words missing in that sentence, it doesn’t make sense
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If you say so
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I cool electric cars
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It’s funny that stopping for a few minutes every 100 miles is no issue but stopping for 15 minutes every 300 miles to charge a car is
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Just use a fuel cell
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Combustion is just wastefull
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@DinoAlberini no he’s just mad about it
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There’s a reason there’s no hydrogen combustion cars driving around
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@kevinmiracle8233 you’re the one being blinded, still rooting for a technology (hydrogen combustion) which uses a lot of energy and emits NOx. I hope to god it has not future
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Did you at any point in the video hear ‘fuel cell’?
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@kenlittle3384 but this entire video is about Toyota developing a hydrogen COMBUSTION engine, that NOT the mirai.
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If you say so
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No
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@FingerAngle on a battery
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Fuel cell
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Try listening again
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@Sabumnim666 1 kg of hydrogen has the same amount of energy as one gallon of fuel he rather clearly states
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@Sabumnim666 that’s why he compares 1 kg of hydrogen to a GALLON of gasoline😉 Because a gallon of gasoline has about 120 MJ of energy
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@Sabumnim666 if you say so
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@Sabumnim666 that’s new, you can no longer compare two quantities of materials? Wow
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Combustion is beyond antiquated and will never be the future
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@marker2468 combustion can never be as efficient as fuel cells, and on top of that combustion requires far more maintenance AND produces NOx
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Not in fuel economy
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And no car to show for it😂
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Listening is hard🤦‍♂️
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It’s not combustion
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Better than you
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Not if you burn it
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@divinehatred6021 money didn’t exist in the 18th century?😂
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Triggered much😂
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V8 is not the realistic option
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And then?
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@Delta1049 so which calculation is wrong?
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@Delta1049 ‘1 gallon of gas has the same amount of energy as 1 kg of hydrogen’ they are not the same size
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@Delta1049 1 kg or about 25 litres
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The difference is energy per litre
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1 gallon is not 5 liters 😂😂😂😂
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That seems like a colossal waste of energy
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@voichitakiss1552 no it would not, as you would need a battery bigger than in an electric car
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Another one that missed the point of the video
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You need waaay more electric power to split water into hydrogen than the engine can provide
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You funny😂
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No😂
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And why would you use a tiny combustion engine? Kinda defeats the point of a combustion engine, just use a fuel cell instead
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Let’s not use combustion
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Yeah right, that’s why there are so many hydrogen cars
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Comparable to gas? What mileage?
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@akfreed6949 same mileage, according to him, no further proof
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Oh I say, you can’t generate hydrogen with the energy you get from driving
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@jayclark2077 all those inventions have one thing in common: they don’t break the laws of thermodynamics. Generating the hydrogen with the energy from driving has an efficiency over 200%, it is physically impossible
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Might wanna recheck the video, he never compares kg to kg
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Days, at what power are you charging😂
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Why would you use a combustion engine?😂
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What is ‘it’?
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Paying attention is hard😂
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And guess what? It’s not combustion
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To get a range of 100 miles
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If you say so
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Why?
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Oh they already started
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Where to start? kWh is a unit of energy, not only electricity. 1 kWh is 3.6 Mj. Joule is also heat energy 14 L/ Kg for hydrogen is very contained, so I’m guessing you’re using liquid hydrogen and not compressed. Cooling hydrogen? That way your tank will be empty in a matter of days. (Even when you try to cool it with a hydrogen fuel cell). A more realistic example is the Toyota mirai, 140L tank for 5 kg hydrogen
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Not internal combustion
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Internal combustion engines
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@ffarooqi4297 you wanted to know
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The Toyota mirai is not a V8 combustion car, but a fuel cell car
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If you’re so smart and prove him wrong
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Somebody cannot listen
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Have you heard of the Toyota mirai?
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Hybrids will fail, too heavy and too costly
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No, just use a fuel cell
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That’s like powering a windmill with a fan, it doesn’t work😂
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@carlmurrygriffin1413 you use more energy to produce hydrogen than hydrogen can produce
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@carlmurrygriffin1413 they were liars and frauds just like everyone who claims to have perpetual motion machines
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Free energy? Nice try
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Still waiting😂
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It’s not real
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Are you saying that hydrogen v8 engines are more efficient than fuel cells?
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@natesewell9402 show me proof😂 A v8 with 90%+ efficiency 🫣
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@natesewell9402 that’s the efficiency of hydrogen fuel cells, so yeah, you did
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Your math is wrong
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He was a scammer
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@dt6313 he was just casually breaking the laws of nature but hey
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He never said otherwise
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Than electricity?
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Are you deaf? He didn’t say that
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Your point?
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@sandervanderkammen9230 h2 is Made with the grid😂
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