Comments by "Luredreier" (@Luredreier) on "Engineering Explained" channel.

+ @anchorbait6662 According to @Davud Scott it's apparently to help transport the fuel and air mixture into the combustion chamber from what I can understand of his explaination.
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What's the reason for that cavity then?
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Would hydrogen make sense in a rotary engine? And what about hydrogen fuel cells?
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+ @ebenwaterman5858 The engine oil might change the chemical reactions though...
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+ @anchorbait6662 If decreasing the compression is the goal, then yes, that might make sense. However is that the only reason that the design got a cavity there in the first place?
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+ @davidscott5903 Thank you, and yes, that makes more sense.
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Hum, this would be ideal for a hybrid car, no? It already got a lot of power for the electric engines, using a little extra for a electric supercharger when you're trying to accelerate fast could be usefull for those more sporty hybrids.
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Hum, would a 6 piston version work as well as a 3 piston one from a efficiency standpoint? Possibly with different turbos or some such?
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@wayward03 If that was the only length unit then maybe, but the imperial system uses multiple length units that doesn't scale linearily meaning that you'll get all the conversion costs of converting between imperial and metric built into the imperial system itself. With the loss of life and money etc that entails...
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0:58 On snow and ice you don't want a generalized all terrain tire, they need to be soft for extra grip.
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So, theoretically, how good an hybrid gasoline/hydrogen/electric engine would it be possible to make with this technology?
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Hum, what about a engine that generally use two or more fules but can use just one if it runs out of the other fuel types. Would that be possible?
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Any chance of you having a look at the LiquidPiston X engine?
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Thankfully liters are smaller units then gallons, so you don't need to go all the way to 100 km to make a sensible number. In my own country we just do 10 km, or a nordic "mile" or a myriametre. So basically liters pr myriameter is our fuel economy unit of choice here.
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Simultaneous multithreading you mean ;-) (Hyper threading is just a brand name from Intel for a previously existing technology damned SMT that existed on other CPUs before I tel used it, although theirs where the first x86 implementation and the first intended for home computers).
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@BeRAd427 That would be weird... I guess you could have six cylinders with a gap between them and have a continuous piston between the two. It might arguably be considered two pistons instead of one, but if it's a single piece of metal you could probably get away with calling it a single piston. Then it would have to have some way of transferring energy, sideways out to a shaft somewhere. You can't have a crack shaft between the two piston heads as you probably couldn't call it a single piston then... It would be a really really inefficient engine most likely, and no one would do this for any other reason then just showing that it can be done...
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@panda4247 That might be a better design then what I had in mind, I was thinking a lever instead...
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@jimbronson687 It's a bit more then that. The first threads where. But as computer technology developed and especially out of order execution became possible a CPU could execute instructions from a different thread entirely while running code from the first thread. You can actually do it with a in order CPU too keeping more of the CPUs execution resources occupied, but chances are far higher then that there's just no instruction in either thread able to utilize the available resources or that one thread has to wait for the other thread to no longer need a specific resource in a given clock cycle.
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@lelsewherelelsewhere9435 People calling SMT for hyperthrading is a bit of a pet peeve of mine. The technology is named simultaneous multithreading while "hyperthrading" is just Intels first implementation of it (others had done it before Intel).
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@sirprise9548 Thank you. :-D
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@dantemartinez5494 I think that it's possible, just really, really inefficient. If you have two opposing piston heads connected by a metal rod that's all a single piece of metal can't you argue that it's just a single piston facing two ways? Or even a piston that's just a single solid block of metal. You can divide the cylinders in two by having a opening in the middle between them and design the engine to have the piston move between them or increase and decrease the amount inside each end. It's obvious a bad idea, but it should be possible at least.
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@cerberus1166 Yeah, no... That last comment of yours is just wrong, and you know it given your earlier comments in this thread. The cylinders are the holes, not the pistons or ends of the holes, just the holes themselves.
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Ok, but what about that hybrid hydrogen rotary engine + a fuel cell + a hybrid approach like with hybrid gasoline cars with a electric engine and batteries etc? You could make it a plug-in hybrid with a hydrogen tank and simply connect a garden hose to the car as well as electricity to generate hydrogen through electrolysis. The issue there would probably to cool it down enough or create enough pressure to store it efficiently... But assuming that issue could be solved, would something like that make sense in your view? The hydrogen could then go to either the rotary engine or the fuel cells as desired. Allowing a pure gasoline drive, a hybrid-gasolin/hydrogen drive (using hydrogen mixed in with the gasolin for instance), a pure hydrogen drive (using just hydrogen in both the fuel cell and the rotary engine for maximum (more or less green) performance, a eco mode (just hydrogen fuel cell + plug in electricity) or pure electric (just plug-in electricity). That many options gotta be usefull. If the engine can also be made to work with other substances it might even be of use to the likes of a military, since hydrogen can be made on the spot without drilling for oil as long as you have power (from say a solar panel) and a river or some other source of water.
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The scratches are unfortunatly fairly normal for car transport. I'm assuming that your original car was bought at a dealer. Of course it's possible that their pain job is more susceptible to scratching then your average car though...
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