Recent comments in /f/gifs
evilleppy87 t1_iwgrf7o wrote
Reply to comment by Drunken-samurai in How an engine works. by ooMEAToo
Like Honda VTEC, for example?
Brandon432 t1_iwgreof wrote
Reply to comment by therandomopera in How an engine works. by ooMEAToo
This animation/video is a bit simplified. In real life, a couple things are different. The part at the top of the valve (or linked via pushrods and rockers) that actually contacts the camshaft is called the tappet. Tappers can be “flat” (not literally, they still have a bit of crown) or roller style. In either case, the tappet is made of friction resistant alloy and does NOT break contact with the cam. It follows the entire lobe so there is no “striking” just rubbing. Roller tappers greatly reduce friction but increase mass. In either case, the cam and tappets are enclosed in the engine head and continually fed motor oil to reduce friction and dissipate heat.
Kurbalaganta t1_iwgr2fh wrote
Hey, thats really cool.
illBro t1_iwgqbup wrote
Reply to comment by Aggrador in How an engine works. by ooMEAToo
It would be easier to make it correct in a diagram vs real life.
Stagamemnon t1_iwgpnas wrote
Reply to How an engine works. by ooMEAToo
Yeah, but where’s the fleeb? Don’t you have to rub that cause the fleeb has all the fleeb juice?
bewyc t1_iwgpkef wrote
looks really cool!
Brandon432 t1_iwgpj1w wrote
Reply to comment by witzed1 in How an engine works. by ooMEAToo
They are turning in the same direction. Counterclockwise as viewed from the left.
Brandon432 t1_iwgpf51 wrote
Reply to comment by Strength-Speed in How an engine works. by ooMEAToo
Starter motor aka cranking motor. That’s the sound you here when you cold start a car. The pistons rotating without igniton.
Strength-Speed t1_iwgp260 wrote
Reply to How an engine works. by ooMEAToo
Just a question if anyone knows. The cycle is intake, compression, ignition, exhaust. That would seem to indicate the piston starts in the up position then draws in air-fuel as the first step. But what draws the initial piston down, before the engine starts, as no ignitions have happened yet?
shifty_coder t1_iwgob0g wrote
Reply to comment by evilleppy87 in How an engine works. by ooMEAToo
Isn’t the ignition order wrong, too? Would a three cylinder fire sequentially, or wouldn’t it fire 1-3-2 or something
witzed1 t1_iwgo1r0 wrote
Reply to comment by devnull1232 in How an engine works. by ooMEAToo
Camshaft and timing belt.
witzed1 t1_iwgnw59 wrote
Reply to comment by Flagil_Reinhumps in How an engine works. by ooMEAToo
There certainly will be less work for mechanics.
witzed1 t1_iwgnrd3 wrote
Reply to How an engine works. by ooMEAToo
Strange valve timing gear configuration. Usually cam and crank turn in same direction. Maybe a model artifact but definitely not representative of modern engines.
Iknowmorethanyou35 t1_iwgnetk wrote
Reply to How an engine works. by ooMEAToo
Timing seems a bit off there
OgnokTheRager t1_iwgn697 wrote
Reply to comment by robopies in I drew and animated this pixel art scene by hand and called it "Monolith" [OC] by v78
I thought the same thing but couldn't remember the name of the story!
witzed1 t1_iwgmy47 wrote
Reply to comment by DekaFate in How an engine works. by ooMEAToo
The part, the connecting rod, connecting the piston to the crankshaft breaks. Usually due to some catastrophic problem like overheating or oil starvation. Something has prevented normal piston travel.
myawesomeself t1_iwgmva8 wrote
Reply to comment by Waldron1943 in How an engine works. by ooMEAToo
I think this is what everyone expects, that the exhaust should be open near TDC so it might overlap with intake a little, however in the model it clearly closes completely somewhere around halfway up and there is a noticeable gap between the exhaust valve closing and intake opening which is the unusual timing people are talking about.
Wayed96 t1_iwgmkik wrote
Reply to comment by evilleppy87 in How an engine works. by ooMEAToo
And even a little longer to improve intake speed
Oaskary t1_iwgm3wt wrote
Reply to How an engine works. by ooMEAToo
I'm so glad I don't have to invent an engine.
classycatman t1_iwgl7ez wrote
Reminds me of scenes from Ultima. Used to love that series of games!
Everard5 t1_iwgl4mh wrote
Reply to comment by mkillham in How an engine works. by ooMEAToo
Pretty good explanation.
Grogosh t1_iwgkgph wrote
Its full of stars!
robopies t1_iwgk2rv wrote
Looks like illustration to Stephen King's "N.". Cool :)
Nemo_D2 t1_iwgjvft wrote
This is Harrowstorm in Western Skyrim
FallenFae t1_iwgrgpl wrote
Reply to I drew and animated this pixel art scene by hand and called it "Monolith" [OC] by v78
The only, and I mean ONLY thing I'd change here is to put a reflective edge around the obelisk, one that moves as the blue light from the rift edge and the pink light from the clouds overpower each other. I like the obelisk being vantablack™ but it was hard for my eyes to focus on it. Other than that, fucking incredible work. I love the perspective, it feels like all the air around me would be getting sucked past and into the rift. The atmosphere you've created is incredible!