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ekuNNN has a new favorite as of 12:47 on Oct 1, 2016 |
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Oct 1, 2016 11:50
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Memento posted:It's just highly tuned cars. You might hear a bit of a popping noise on overrun on a regular car signifying small amounts of unburnt fuel being cooked off in the exhaust but to actually have flames spitting out the end you need quite a lot of fuel in there. When you press the accelerator down in a top end car like that, it takes a ton of air in and injects a ton of fuel so it doesn't run lean (insufficient fuel, can damage the engine), and taking your foot off the throttle quickly means you can get a lot of fuel injected in without any air to help it burn. There's only one place that fuel can go, which is into the exhaust, and if it's a really large amount, it might not have enough oxygen available to ignite until it's past the end of the exhaust, even though it's hot enough to spontaneously ignite. It seems like this is easy to determine after an incident. Would this mean that an insurance company may refuse to pay the expensive Italian car on fire claim?
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Oct 1, 2016 13:56
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Eponine posted:It seems like this is easy to determine after an incident. Would this mean that an insurance company may refuse to pay the expensive Italian car on fire claim? If the owner even had comprehensive coverage in the first place. Given that it's probably driven 5 times and then put in a collection garage, they might not. (AIUI insurance for car-as-art is different from general comprehensive coverage, and only covers inside storage or when being transported.) But if you own a car like that, you can afford to replace it.
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Oct 1, 2016 14:11
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Ordinary cars can do it too. You see it after snowfalls, when idiots spin their wheels in the icy roads, getting nowhere and eventually their engine overheats and happiness happens. Another way, is people stuck in traffic: I live in a goddamn desert but I still know not to do the poo poo these people do 
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Oct 1, 2016 14:38
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Both dogs were okay.
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Oct 1, 2016 16:40
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Chromatic posted:Back to his roots? Didn't even get to the lemons, malic acid and bottle of lemon concentrate. 
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Oct 1, 2016 16:43
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Gorilla Salad posted:Ordinary cars can do it too. You see it after snowfalls, when idiots spin their wheels in the icy roads, getting nowhere and eventually their engine overheats and happiness happens. Doesn't every car ever have a temp gauge?
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Oct 1, 2016 17:05
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Bum the Sad posted:Doesn't every car ever have a temp gauge? lol if you expect dumbfucks to actually pay attention to that
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Oct 1, 2016 17:08
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WRT to the flaming cars, it can happen totally unrelated to any fuel being dumped into/out of the exhaust (though obviously that doesn't help). The lambo video in particular is a good example. The video is from Dubai, so it's probably 110F/43C+, and he's revving the engine for a good bit while stationary. The engine in that makes 700hp (assuming he hasn't messed with it.) Considering that most cars don't break 40% thermal efficiency (less than 40% of the power generated is used to move the car, the rest is heat/noise/overcoming friction) you're talking A LOT of heat. Since he's stationary, he's getting practically zero cooling on his car which is generating insane amounts of heat in an already insanely hot environment. Combine that with the adhesives used to hold the car together (gotta love aerospace adhesives!) and something is going to get hot enough to reach it's autoignite point, either insulation or the glue itself. Then he keeps revving it because "I'm a rich oil shiek and I'm too important to sit in traffic and people need to know. People are honking at me? Better rev more! " and boom, a few hundred grand disappears in flames. The real schadenfreude is that the car probably costs pocket change to him and he most likely just lol'd and bought a new one. Eat the rich. fake edit: toyota is making GBS threads its pants in excitment over creating an engine with 38% efficiency, and claims most cars average 20%. That's a LOT of wasted heat energy being dumped into a car with no cooling, hence why even basic economy cars can go up in flames. This has been your daily science lesson 
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Oct 1, 2016 17:41
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Oct 1, 2016 17:53
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I'm not an engineer, but if they're producing so much heat couldn't you sick a heat exchange mechanism/thermoelectric generator on something and reclaim some of the energy? I guess it's just pumped out in such a diffuse pattern it's kinda pointless. e: ^^ TA-DA! Outrail has a new favorite as of 18:04 on Oct 1, 2016 |
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Oct 1, 2016 17:54
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Outrail posted:I'm not an engineer, but if they're producing so much heat couldn't you sick a heat exchange mechanism/thermoelectric generator on something and reclaim some of the energy? I guess it's just pumped out in such a diffuse pattern it's kinda pointless. That's what the car heater core does to warm up the air being blown into the cabin. Engine coolant is fed from the hot engine through the heater core which then heats air that is blown into the cabin. It's basically just a mini radiator in the dashboard. And I'm not sure if it has a huge effect or not but I've been told if a car engine is overheating for some reason you can turn on the heater full blast to help cool the engine as a last ditch effort.
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Oct 1, 2016 18:04
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Outrail posted:I'm not an engineer, but if they're producing so much heat couldn't you sick a heat exchange mechanism/thermoelectric generator on something and reclaim some of the energy? I guess it's just pumped out in such a diffuse pattern it's kinda pointless. Probably, but if its a car you want to be affordable and reliable, everything extra you add is just going to add more complexity and problems.
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Oct 1, 2016 18:04
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Panfilo posted:Probably, but if its a car you want to be affordable and reliable, everything extra you add is just going to add more complexity and problems. Lets put one in then, and mesh it in with a bunch of the other unreliable stuff that needs frequent fixing so you have to remove it to get at anything else. - Car manufacturers
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Oct 1, 2016 18:06
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Outrail posted:Lets put one in then, and mesh it in with a bunch of the other unreliable stuff that needs frequent fixing so you have to remove it to get at anything else. - Car manufacturers $2,000 mechanic bill and yet-to-be-diagnosed electrical problem later...
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Oct 1, 2016 18:16
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Vitamins posted:
From what I understand this was possible in older cars, but modern ones with aluminum engine bits heat too fast. I think the idea is that if the aluminum gets hot enough to spike the temp on the gauge then by the time you can get the heat blasting it'll have already gotten too hot and the small amount of heat you are able to dissipate with the heater won't save your engine.
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Oct 1, 2016 18:32
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Panfilo posted:$2,000 mechanic bill and yet-to-be-diagnosed electrical problem later... You just described my vehicle. Thanks.
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Oct 1, 2016 18:45
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Vitamins posted:And I'm not sure if it has a huge effect or not but I've been told if a car engine is overheating for some reason you can turn on the heater full blast to help cool the engine as a last ditch effort. I had to do this once when my mid 90s camry started overheating on a long drive. Heat on full blast for two hours in the middle of August. It worked and I got home, but it got a little steamy in there even with all the windows open. Fortunately there wasn't much traffic because if I stopped, it was over.
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Oct 1, 2016 18:56
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Here's a thing that's been bothering me a long while. Who was it that owned how many petabytes of horse's vaginas, and why?
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Oct 1, 2016 19:04
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Vitamins posted:
Interestingly or stupidly, my current car actually simulates the popping sound of unburnt fuel when I release the gas while accelerating hard in sport mode. I don't know exactly what it is doing, but it's purely for fun.
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Oct 1, 2016 19:13
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oh dope posted:I had to do this once when my mid 90s camry started overheating on a long drive. Heat on full blast for two hours in the middle of August. It worked and I got home, but it got a little steamy in there even with all the windows open. Fortunately there wasn't much traffic because if I stopped, it was over. I was driving across NoDak on a particularly hot summer in my old malfunctioning 4 beater and It was perfectly fine until I stopped at a rest-stop, at which point the temp gauge pegged with no air flow and I needed to pop the hood for an hour until it deigned to start again.
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Oct 1, 2016 19:28
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grumplestiltzkin posted:WRT to the flaming cars, it can happen totally unrelated to any fuel being dumped into/out of the exhaust (though obviously that doesn't help). The lambo video in particular is a good example. The video is from Dubai, so it's probably 110F/43C+, and he's revving the engine for a good bit while stationary. The engine in that makes 700hp (assuming he hasn't messed with it.) Considering that most cars don't break 40% thermal efficiency (less than 40% of the power generated is used to move the car, the rest is heat/noise/overcoming friction) you're talking A LOT of heat. Since he's stationary, he's getting practically zero cooling on his car which is generating insane amounts of heat in an already insanely hot environment. Combine that with the adhesives used to hold the car together (gotta love aerospace adhesives!) and something is going to get hot enough to reach it's autoignite point, either insulation or the glue itself. Then he keeps revving it because "I'm a rich oil shiek and I'm too important to sit in traffic and people need to know. People are honking at me? Better rev more! See also: Any extended "burnout" video. Like this one for example: https://www.youtube.com/watch?v=dI7h_LBifIM You don't even need fancy aerospace crap to autoignite, there's a fair amount of regular stuff in the engine bay that could fail under extreme operating temperatures and ruin your day.
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Oct 1, 2016 20:03
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Karate Bastard posted:Here's a thing that's been bothering me a long while. Who was it that owned how many petabytes of horse's vaginas, and why? IIRC that originally came from someone posting about a "realistic horse vaginas" mod for Skyrim.
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Oct 1, 2016 20:05
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Karate Bastard posted:Here's a thing that's been bothering me a long while. Who was it that owned how many petabytes of horse's vaginas, and why? There is some fine print in the EULA of Bethesda's games that states that mods created for their games are the property of Bethesda. This led to the natural conclusion that at some point an accounting would be done of the mods for the Elder Scrolls games and some accountant would say "Wait, we own how many petabytes of horse vaginas?!" Edit: I just remembered that this came up when Bethesda sent cease and desist notices to people trying to fund their mods on kickstarter. Turns out Bethesda doesn't want you to raise $44k to make mods off their IP. tasukiscool has a new favorite as of 20:19 on Oct 1, 2016 |
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Oct 1, 2016 20:06
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Hahaha serves them right! They loving deserve to own all of loving nexus for all their poo poo
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Oct 1, 2016 20:19
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tasukiscool posted:There is some fine print in the EULA of Bethesda's games that states that mods created for their games are the property of Bethesda. This led to the natural conclusion that at some point an accounting would be done of the mods for the Elder Scrolls games and some accountant would say "Wait, we own how many petabytes of horse vaginas?!" Wasn't that also the title of the PYF quotes thread at some point?
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Oct 1, 2016 21:15
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I assume the stuck people had nervous breakdowns about being late to be someplace which caused their impromptu Paul Walker tribute burnouts.
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Oct 1, 2016 21:25
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Chromatic posted:Back to his roots? I could feel my mouth sympathy-puckering.
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Oct 1, 2016 22:15
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Oct 2, 2016 00:02
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Bum the Sad posted:Doesn't every car ever have a temp gauge? Yea but it measures the coolant temp, which could be just fine depending on what's going on.
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Oct 2, 2016 00:41
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Outrail posted:I'm not an engineer, but if they're producing so much heat couldn't you sick a heat exchange mechanism/thermoelectric generator on something and reclaim some of the energy? I guess it's just pumped out in such a diffuse pattern it's kinda pointless. F1 cars (and I think Le Mans cars?) do this. They're placed inside the engine block and turbochargers. This power, and power from regenerative braking, is used to power an electric motor to give a boost of speed. They generate enough electricity to be worth ~30HP in ~850-900 HP engines, which probably wouldn't be worth the extra cost in a regular car, but it's something that car companies are exploring.
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Oct 2, 2016 01:40
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https://www.youtube.com/watch?v=3FmsDkNyxo0
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Oct 2, 2016 02:13
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`Nemesis posted:Yea but it measures the coolant temp, which could be just fine depending on what's going on. This makes me really wish cars offered more comprehensive readouts. Everything is so computerized you'd think you could sync your smartphone to your car and get more detailed information in real time rather than an idiot light and a $100 bill to just diagnose the E U.
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Oct 2, 2016 02:24
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Panfilo posted:This makes me really wish cars offered more comprehensive readouts. Everything is so computerized you'd think you could sync your smartphone to your car and get more detailed information in real time rather than an idiot light and a $100 bill to just diagnose the E U. You do realize a ton of auto parts stores will read the OBD-II code for free, right?
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Oct 2, 2016 02:27
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Bum the Sad posted:Doesn't every car ever have a temp gauge? Mine doesn’t. If there are no error lights and it’s not literally on fire, I can only assume assume it’s within safe operating temperature. Platystemon has a new favorite as of 02:38 on Oct 2, 2016 |
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Oct 2, 2016 02:35
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The other part is a lot of manufacturers fuzz the data on dash displays cause the layman isn't particularly good at interpreting what they mean.
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Oct 2, 2016 02:38
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One in a million shot doc, one in a million
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Oct 2, 2016 02:54
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Double Punctuation posted:You do realize a ton of auto parts stores will read the OBD-II code for free, right? Yeah but most people don't, otherwise there's no market for it at auto shops particularly dealerships. Also, that doesn't give me real time information. It would be nice to get in top of an imminent problem vs waiting for the idiot light to turn on and getting a diagnostic code.
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Oct 2, 2016 03:02
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Panfilo posted:Yeah but most people don't, otherwise there's no market for it at auto shops particularly dealerships. Add-ons that do this exist, if your vehicle is ODB-II compliant (which p much means MY1996 or newer), e.g. https://www.scangauge.com/
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Oct 2, 2016 03:08
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Panfilo posted:Yeah but most people don't, otherwise there's no market for it at auto shops particularly dealerships. Check out torque lite, its a reader that interfaces with a smart phone. I got one for Christmas from my brother, think he said it was about $15
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Oct 2, 2016 03:10
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