Comments by "Be Low Below" (@toyotaprius79) on "Engineering Explained" channel.

  1. Legendary would be creating climate collapse because it wasn't affordable not to
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  2. +Engineering Explained So we know now why most electric cars don't need gears in normal applications, however would multiple gears improve higher speed applications? Even if it were a 2-speed or CVT. Most EV owners are well aware of the heightened power consumption when sustaining high speeds. In your usual Leaf or Renault Zoe, the motor is spinning at 7500 or 8000 rpms. Cars such as those also start to experience a loss of available torque at speeds of +50 mph which makes overtaking awkward. Aside from the well known case of early Tesla Roadsters destroying their 2-speeds, should every OEM EV be limited to be a 1-speed.
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  3. dodiloi Globally, it was dominated by internal combustion for a century. If you want to get technical, different markets had diesels, petrols, some ethanol, but it's all still combustion.
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  4. It could. For a normal engine the best are in toyota hybrids, which have a thermal efficiency of 40%. This is mainly achieved through the Atkinson cycle and emissions gas re-circulation. But there are down sides to this. One of them is that the cabin does take a while to warm up from a cold starting engine, that and for some (technically 2010 - present) hybrids the aluminum cylinder head actually warps for hard use vehicles because of that high thermal efficiency and how the cars were intentionally built to retain heat for the sake of economy. 60% is amazing, current the best I could think of (excluding electric motors) are 55% for steam turbines.
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  5. @YamahaOutboards never too late to put some of your eggs into some decent battery electric propulsion before the Chinese outcompete you in no time
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  6. ... k It depends on everything. Where's the nearest local charger, does the track have chargers, or which car you use. There's plenty who drag Model Ses who find their way home. Laguna Seca has had a yearly electric race series for almost a decade now, the Refuel race series. They usually provide charging there.
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  7. All interesting, but wouldn't there be suction losses if the valve was closed early?
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  8.  @Contrailing  the Zoe is streets ahead of the LEAF. You yankeedoodles don't have it.
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  9. GoroPohy That's pretty much just out of ignorance of the subject at hand. Capacity has been doubling every 5 years, and priced halving in less time. They are improving as we speak. Its only now that more and more automakers are investing more into battery design. Over 3 years ago, there was little investment and little players in EVs. And that'd compared to over a venture of condition engine investment. Of course over three years ago, that was when everyone was conditioned into thinking diesel was the best buy out there. Don't you worry, batteries are improving, quickly. However, we should take a moment and witness how we're craving better and more as we do for smart phoned; and instead come to terms how electric cars today can cover our weekly needs with only 2 charges a week or so
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  10. *eats popcorn*
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  11. Can we talk about the Nissan Leaf's lack of cooling management?
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  12. I know it's not a real CVT (it's better), but something has to be said for the hybrid eCVTs. They pull like a train, particularly the 2.0 litres and above.
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  13. Balaji Chandrasekaran So far, for the last 8 years, everyone has been demanding for more capacity and power density, and faster charging. There hasn't been that much demand, although every car makers' investment in solid state electrolyte (Li-poly) is promising. In the automotive world, "lightweight" batteries aren't that common, especially when you consider most of the weight is in the metal packaging of the whole pack and surrounding individuals modules. But that doesn't mean the chassis of cars are getting lighter and smaller either. This is where the BMW i3 comes in, using CFRP in its body allowed weight reduction, and an efficiency gain. The engineers then further reduced the need for battery size, thus more weight reduction and efficiency gain and so on.
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  14.  @nickvledder  efficient on the highway, but not elsewhere let's be honest. That's what DPFs are for.
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  15. Look up the union of concerned scientists. They have been crunching those numbers for almost a decade.
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  16. Jesus wept Toyota executives getting ready for the axe
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  17. Sorry...
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  18. Seeethe
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  19. Electric motors and around 7 cogs prove hard to break, in usual hybrids. This is different, because of that OD clutch. However, if it has 3 plates it should be beefy enough. As Mitsubishi PHEVs go that are also like this, it shouldn't be a problem, worn wheel bearings would be bigger problem in the future.
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  20. +Joseph Calabria Perhaps, but the cooling the Veyron needs would be lost. But if we needed the slipperiest shape possible, it could be powered by a monster electric drivetrain like the one from the Rimac Concept hyper car. Considering that the Prius' side profile is literally inspired by an airfoil, it might take off before 180 mph.
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  21. Jehu Garcia, EVWest, look it up.
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  22. With over production of renewable energy? When do you think that'll happen, it's not soon enough, and such an idea now means cannabis renewable energy that should be offsetting fossil fuels.
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  23. How could a tire get minimum rolling resistance and maximum desirable lateral grip?
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  24. In case if any of you have seen the fluid-CVT bicycle hub from Nuvidia; this is it.
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  25. Keep telling yourself that pal. There are bigger, more important things though
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  26. Just like any series (and series parallel) hybrid built in the last 25 years...
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  27.  @RaaynML  it's the economy dictating society alright
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  28.  @nickvledder  there is when it's the only option available
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  29. Uh oh... What about Rapidgate, man??
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  30. What's stopping folks from buying brand-new gas cars every quarter? It's encouraged, for the economy...
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  31. Oil says no
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  32. Nice! A lovely, lively revving little thing. And completely unmolested too... unlike most Hondas.
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  33. Move to Florida, are you Crazy, man?!
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  34. +Joseph Calabria Cheers! Of all the 7 years I've been on youtube, what you said was definitely a first!
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  35. So hydrogen has been a waste of time for everyone, especially in a context of a climate crisis?
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  36. It's only viable to keep investors calm that Toyota ain't circling the toilet
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  37.  @liquidsweg4858  don't worry, grief is a process, the feeling is much more political now; but I can't wait to hear you cry about it in your car, surrounded by floods and fires, vlogging to nobody wishing you did things differently.
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  38.  @gbear34  you're misunderstanding what neocolonialism actually is.
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  39.  @GeorgeWashingtonLaserMusket  you definitely don't understand
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  40.  @jumboshrimps4498  that's the problem. You're advocating for genocide
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  41. NOx is crucial. But who cares, click bait.
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  42. What would be interesting man is to talk how regen or energy recuperation is in fact a negative output of energy.... As in, the motor can slow the car down by putting kWs back into the battery. On any torque app, this will be shown as negative wKs or bog equivalent. It's interesting, more so when we consider that our batteries are always getting a work out. Imagine driving on the freeway, the battery is putting out a constant 20-50kW, and when its parked and charging, it's taking in a constant 50kW or whatever equivalent of power. These things are always working with what we consider high outputs. No wonder why battery cooling is also so important.
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  43. Trains
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  44. amogus
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  45. I know it looks strange, but give up on blowing Toyota's horn. They squandered the last 15 years as top dog, now they're in a whirlpool that is the crossover-profit-paradox with an added complication of not investing in EVs & PHEVs hoping that there wouldn't be a market.
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  46. And yknow. After so many years of the Prius and other limited choice Toyota hybrids, and it has taken almost two decades for Ford to make a hybrid Maverick after their Escape hybrid ... Why hasn't Toyota made a hybrid duty vehicle? It proves to anyone paying attention that they're not interested in solutions.
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  47. lol, a dig at the CarThrottle?
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  48. This is my kind of jam! Cell voltage balancing is crucially overlooked and underutilized in EVs/Hybrids. It should be built in (as a parallel gate bleed) to balance at all % SOC
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  49. ​ @Marmocet you're describing very separate problems One of them ignores the variety of different battery chemistries (and manufacturers) And the other is an abject failure of dealerships who have no business in preparing for vaguely different cars (Citroen suspension) Thirdly, you ignore the giant problem that is the production of Oil and how they use (and waste) Cobalt to scrub sulphurs out of fuel.
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  50. Will it last after more than 70,000 miles?
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  51. okleydokley Around 5 years. And maybe not capacity exactly but definitely range. Practically each new generational model of an EV car seems to double its range. So stretch that to 7 years for some maybe maybe, and quite often, automakers are one-upping each other on effective range every 8 months or so. The Hyundai Ioniq was a class leader very briefly at 130 miles.
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  52. You somehow managed to beat yourself to being first...
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  53. That's beautiful.
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  54. I do remember hearing that a cyclist on a day's diet of mostly beef will effectively emit 1000g/km of CO2.
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  55. I want to see this rotary hybrid cheaper, lighter, cleaner and in every plugin hybrid possible
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  56. The gap tolerances must be extremely tight to keep the H2 where it's needed
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  57. Oil
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  58. In other news, Ongoing and "boiling" climate collapse
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  59. Oh absolutely, and it's not just because they deliberately didn't invest in PHEVs & EVs. But let's be honest, any automaker that makes most of its profits on Crossovers will not be spared. Profits begets inflation. Inflation reduces the value of profits, so profit margins must grow, quarterly profits must grow by the demand of investors. Therefore inflation. Eventually buyers will be alienated by the market defined by poor value for money and poor variety. I think this is what the kids nowadays call economic rent. Something that landlords and silicon valley companies are guilty of. And it will eventually implode the global-western economy😮
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  60. ​ @rjung_ch how?
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  61. Yikes If you mean "secondary emissions" like photo chemicals that form smog, then you'd be right. A 45 mpg diesel from the late 90s would emit far more damaging emissions than a 45 gas (or hybrid) car from 2010. Because emissions regulations also evolve
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  62.  @helojoeywala6622  hope we can dissect what causes those needs in this fast paced world we're trying to get back to.
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  63. Would this be anything like the Napier Diesel Deltics? They had power density? Sure. Awe and wonder? Definitely. Reliability , uhh... But in this world now it's quite near impossible to improve real world economy with an engine only, unless weight is shed, which every crossover is doing. I'd be interested to see the compression ratio (and emissions) that characterize these. And I'd love to see this arrive in the EU at the least. If opposing pistons have been used in locomotives for their high torque output, what would be better to see these in passenger vans and mini buses? Or as a perfectly capable generator engine for a phev commercial vehicle.
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  64. That's some hard core EV ownership there, do you live in Canada? Anyways, a rule of thumb for EVs is that whrn nights drop below freezing or even 10C, one should always leave it plugged in (and charged above 80% but not 100%) all night, even a 120v trickle charge is enough to keep the battery warm above ambient. This is mainly due the separator or gel electrolyte used in Li-ions. They're gell based and can deform at extreme sustained temperatires most car manuals would not advise at all to store the batteries at -25C for 24-48 hours (or+50C). In particular, electrified vehicles like the Volt or any plug in with heat managed batteries will actually use battery capacity to maintain optimal temperature or longevity sake - so keep it plugged in. Cars like the LEAF almost exclusively don't and plugging in is the only way to keep its battery warm in harsh winter nights. Evidently, if you ever see a new Prius (not a Prime) with Li-ion cells, be skeptical. Hybrid batteries themselves are miniscule, they can't retain heat. It's known for those cars to completely rely on the engine for up to 20 minutes to avoid stress damaging its frozen battery pack. NiMH is far better for durability.
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  65. 🏆
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  66.  @EngineeringExplained  Howya Jason 👋🏽
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  67. What a surprise?
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  68. To wash out the sulphur
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  69. Y'know the best way to eliminate turbo lag? Slap a big electro-motor or two to it and make it a proper hybrid. This is a mild hybrid to some degree.
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  70. Comparing the weight of a battery pack to the weight of an equivalent amount of fuel is a bit disingenuous. The battery is an integral part of an EV. An engine, its fuel talk, cooling system etc cannot work without 67lbs of fuel and visa versa. Internal combustion engine components are also heavy, especially when they're in an executive sedan.
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  71. Cool. But Mazda should really just be focussing on electric cars with fixed-rpm rotary range extenders
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