I always wonder about unconventional engine design.

"Nick Has an Exocet" (nickallain) 12/03/2015 at 00:18 • Filed to: None

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The weird thing is - there might be some good ideas in here but unless someone does some significant testing/cad, I’m not actually sure we’d know.

Seriously, some of these things are bizarre.

http://www.douglas-self.com/MUSEUM/POWER/u…

TheHondaBro > Nick Has an Exocet 12/03/2015 at 00:22

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Now THIS I can fap to.

gmporschenut also a fan of hondas > Nick Has an Exocet 12/03/2015 at 00:22

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How can we make a wankel more evil? 8 apex seals!!

TheHondaBro > Nick Has an Exocet 12/03/2015 at 00:23

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I wonder what this one would sound like. Probably a bunch of unfortunate scratching noises.

Urambo Tauro > Nick Has an Exocet 12/03/2015 at 00:59

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I worry about engines that don’t use cylinder-shaped pistons. I know piston rings wear out eventually, but it still seems to be the superior way to seal a combustion chamber.

It’s fun to make jokes about Wankels, but I’ve heard that apex seals are actually much better than they used to be. I wonder if they have been developed to a point where they can last as long as piston rings? Then again, maybe advances in materials and lubrication are allowing piston rings to get better at the same time, jumping even further ahead in the game...

Wankels are certainly impressive, and these alternative designs sure are interesting, but it’s hard to beat classic piston engines.

Berang > Urambo Tauro 12/03/2015 at 01:05

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The real problem with the wankel these days is emissions rather than reliability. It has some problems somewhat similar to those faced by 2-strokes when it comes to limiting emissions.

Urambo Tauro > Berang 12/03/2015 at 01:11

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I don’t know much about Wankels, but that kinda sounds like an oil consumption issue. Maybe they’re using an abundance of oil to keep the seals from wearing out prematurely.

tromoly > Nick Has an Exocet 12/03/2015 at 02:17

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Enjoy.

Amoore100 > TheHondaBro 12/03/2015 at 02:22

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Honestly laughed out loud at “unfortunate scratching noises”. That has made my evening...

Full of the sound of the Gran Fury, signifying nothing. > Urambo Tauro 12/03/2015 at 02:29

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True - try as you might, you can’t beat the classic piston, especially if it has eight valves per cylinder.

Shoop > Nick Has an Exocet 12/03/2015 at 02:50

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How bout the rolls royce double rotary diesel?

www.thedieselgarage.com/forums/119-parking-lot/95286-weird-rolls-royce-diesel-wankel.html

TA4K > Full of the sound of the Gran Fury, signifying nothing. 12/03/2015 at 05:08

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That was that mental “4cyl” bike motor wasn’t it? to get around the rules stating a specific amount of combustion chambers?

Cé hé sin > tromoly 12/03/2015 at 05:42

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There’s a quite spectacular amount of “what the...” going on here.

Cé hé sin > Nick Has an Exocet 12/03/2015 at 05:44

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I’m disappointed that nobody has posted the Deltic gif yet.

nerd_racing > Nick Has an Exocet 12/03/2015 at 07:50

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I just don’t see this making enough bang for the buck, the combustion isn’t tangential enough to the “piston” portion to really make much power. You would almost need another pivot near the main crankshaft area. Even radial piston engines had pivots except for the one master rod.

Jake - Has Bad Luck So You Don't Have To > Full of the sound of the Gran Fury, signifying nothing. 12/03/2015 at 08:09

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Mattbob > Nick Has an Exocet 12/03/2015 at 08:15

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I hope this company gets their weird engine into some things http://liquidpiston.com/technology/how…

You can tell a Finn but you can't tell him much > Nick Has an Exocet 12/03/2015 at 08:37

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Friction, friction everywhere. These are definitely some interesting engines, but there is so much friction when you get large faces sliding past each other that it creates a lot of problems for lubrication.

Jayhawk Jake > Urambo Tauro 12/03/2015 at 09:27

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It’s not that hard to beat piston engines, just get rid of the pistons. Turbines ftw.

Luc - The Acadian Oppo > tromoly 12/03/2015 at 09:55

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Would there be a benefit to this? it seems like just as many moving parts as a conventional engine.

Luc - The Acadian Oppo > Nick Has an Exocet 12/03/2015 at 10:09

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I love out of the box thinking. I’m surprised that there isn’t more out there use in cars other than conventional piston engines.

I honestly think that if the Wankel was given 100+ years of constant development and attention like the piston engine did. That it could power WAY more, if not all cars now. The Wankel is genius on paper, we just have to find a way to make it a viable option in real world applications.

It seems Mazda was the only manufacture really willing to experiment. The had the Miller cycle in the Mazda Millenia and the Wankel.

All the other folks just stuck with the tried and true piston engine.

Full of the sound of the Gran Fury, signifying nothing. > Jake - Has Bad Luck So You Don't Have To 12/03/2015 at 11:28

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https://en.m.wikipedia.org/wiki/Honda_NR

More valves per cylinder means more air/fuel in and out and thus more power. They were limited by the number, but not the shape, of the combustion chambers. Classic Honda out-of-the-box thinking that they used to be known for.

Full of the sound of the Gran Fury, signifying nothing. > TA4K 12/03/2015 at 11:43

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Correct. Honda NR.

https://en.m.wikipedia.org/wiki/Honda_NR

WiscoProud > TheHondaBro 12/03/2015 at 12:15

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I would be very curious about this as well.

tromoly > Luc - The Acadian Oppo 12/03/2015 at 12:54

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Dunno, it was a concept from a few years ago based on a Ducati motorcycle engine, I don’t think it ever got prototyped.