New Rotory Engine?

[the evil twin]

The Doyle Rotary Engine

Looks pretty interesting. I'm not totally convinced on the durability or design though. What are ya'lls thoughts?

[ETC]

Not much there.

Don't see the mechanism used to cause the piston movement.

Isn't the whole point behind the "standard" [Wankel ?] rotary less moving parts ? looks like they made a hybrid of a Rotary and a standard multiple piston motor ... isn't that the worst of both worlds ?

Maybe if they actually built one and showed that it functions then, run the **** thing for a few thousand hours and show how it would actually mount to a vehicle and how you would arrange accessories and how the oiling and cooling system would function we could make some sort of uneducated decision about it ;]

[ron917]

Reminds me of rotary engines on aircraft, except the pistons are inverted. Those aircraft rotaries have been around a for a long, long time - they were common during World War I

Animated Engines, Gnome Rotary
Rotary engine - Wikipedia, the free encyclopedia

[DrCloud]

Originally Posted by ETC

Don't see the mechanism used to cause the piston movement.

It's as if that center business is not concentric with the outer shell that has the pistons -- as the outer shell rotates around the inner one, the pistons compress & fire without actually moving -- although I don't see what the articulation on the pistons is for. This is an odd arrangement, although I guess either part could actually be stationary and the other moving -- maybe that visualization is shown that way to make it easier to see or something. But I'm not sure I get it either. HPH

[Startiger]

Looks like there are three major parts of the engine.

1. The outer housing where the pitons are mounted. This part is basically stationary.
2. The center part includes the intake "manifold" and the exhaust "manifold." This is mounted eccentrically.
3. The Block is mounted in between the center part and the pistons so that the block will move with the center.

As stated, the inner head is mounted off center. As the center rotates, The block will rotate around the outer ring, and the centers eccentric mounting causes the pistons to compress the cylinder as it rotates. Because the block is moving in an eccentric pattern, you do need some movement in the pistons to float with the block.

There are several problems I can see.
1. Cooling. since the block is the part rotating, it is going to be much trickier to move coolant though the block because the block is moving, but not rotating.
2. Starting. You have a lot of mass to spin. You have the whole center mas plus the mass of the block to turnover. Same question with lube. How do you pump oil though a block that is moving?
3. Maintenance. That much mass spinning at a high rate of speed is likely to give you wear issues. While there are fewer moving parts, the parts that are moving are much bigger. Failure of a part is likely to cause more damage.

I'm not really seeing any advantages.

[ETC]

I'm not even seeing basic proof of concept in that video.

So, the center is fixed ? how ?

The "block" rides on a concentric ... what ?

How is the power transferred to Trans ? Flywheel gear ?

Wouldn't centrifugal force cause those pistons to drag heavily on whatever is actuating them ?

Pretty easy to come up with random ideas and make claims. If they showed some detail and how it would work in a real world scenario ...

Kind of reminds me the Diet pill commercials where the fat magically disappears in the animated faceless person.

[phatvw]

Though several years old now, I still like this one:

‪Libralato Engine‬‏ - YouTube

‪Libralato Engine‬‏ - YouTube

Many of the advantages of the Wankel rotary, but simpler design and more efficient due to using a cycle with similar principles to atkinson (unequal expansion ratio vs compression ratio) among other things.

Libralato Engines Technology Overview
http://white-smoke.wetpaint.com/page/Rotary+Engine

The only red flag in their demos is that they don't show any of the seals and don't explain how the seals can withstand the heat. If they can solve the seal issue, it looks quite promising.

[upflying]

Here's a running Gnome.

‪1918 Gnome rotary engine running‬‏ - YouTube

‪1918 Gnome rotary engine running‬‏ - YouTube

[the evil twin]

I would say that either the Wave Disk Generator:
Wave Disk Engine Sips Fuel

Or the OPOC engine
Watch "Opposed Piston Opposed Cylinder Engine" Video at Engineering TV

Will get production first. Unless, of course, they end up like the Tucker.

[ETC]

That Wave disc generator looks cool

Given the Corporopolitical system we have, I doubt It'll see the light of day. Some would say that's "conspiracy theory" but, when you consider oil companies are making the highest net profits ever on this Planet and, there is even a discussion on whether they should get tax payer subsidies ... well ... c'mon ...

I hear the talking heads now ... "That's Socialism" ... That's Un-American ... That Guy sounds like a Commie".

Hopefully if it works and someone shuts it down, some complete plans get Assanged ;]